U.S. patent application number 16/964671 was filed with the patent office on 2021-02-25 for quick clamping device.
The applicant listed for this patent is Robert Bosch GmbH. Invention is credited to Stefano Delfini, Aldo Di Nicolantonio, Florian Esenwein, Bruno Sinzig, Massimo Tolazzi.
Application Number | 20210053176 16/964671 |
Document ID | / |
Family ID | 1000005236740 |
Filed Date | 2021-02-25 |
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United States Patent
Application |
20210053176 |
Kind Code |
A1 |
Di Nicolantonio; Aldo ; et
al. |
February 25, 2021 |
Quick Clamping Device
Abstract
A quick clamping device for a machine tool, in particular for a
hand-held machine tool, includes at least one clamping device that
is moveably mounted in particular on an output spindle of the
machine tool that can be rotationally driven about an output shaft
of the machine tool, at least for axially securing a tool device,
in particular an insert tool, on the output spindle of the machine
tool. The quick clamping device includes at least one movement
securing unit having at least one movement securing element
arranged in particular on the clamping device, which is provided
for a movement of the tool device, in particular in a rotary drive
position, and/or for securing the tool device.
Inventors: |
Di Nicolantonio; Aldo;
(Zuchwil, CH) ; Delfini; Stefano; (Bettlach,
CH) ; Sinzig; Bruno; (Oberbipp, CH) ; Tolazzi;
Massimo; (Tavagnacco, IT) ; Esenwein; Florian;
(Leinfelden-Echterdingen, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Robert Bosch GmbH |
Stuttgart |
|
DE |
|
|
Family ID: |
1000005236740 |
Appl. No.: |
16/964671 |
Filed: |
February 18, 2019 |
PCT Filed: |
February 18, 2019 |
PCT NO: |
PCT/EP2019/053940 |
371 Date: |
July 24, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B24B 23/022
20130101 |
International
Class: |
B24B 23/02 20060101
B24B023/02 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 20, 2018 |
DE |
10 2018 202 520.7 |
Claims
1. A quick-clamping system for a power tool comprising: at least
one clamping device which is mounted in a movable manner on an
output spindle of the power tool, said output spindle configured to
be driven in rotation about an output axis of the power tool, the
at least one clamping device configured to axially securing a tool
device on the output spindle of the power tool; and at least one
movement-securing unit, which has at least one movement-securing
element arrange on the clamping device, the at least one
movement-securing element configured to move and/or secure the tool
device.
2. The quick-clamping system as claimed in claim 1, wherein the at
least one movement-securing element includes a holder and is
configured such that, in at least one state, the at least one
movement-securing element at least partially accommodates a further
movement-securing element of the movement-securing unit, said
further movement-securing element engaging through the tool device
and including an extension.
3. The quick-clamping system at least as claimed in claim 1,
wherein the at least one movement-securing unit is configured to
convert a relative movement of the clamping device into a relative
movement of the tool device.
4. The quick-clamping system as claimed in claim 3, wherein the at
least one movement-securing element includes an oblique surface,
which is configured, based on a movement of the at least one
clamping device, to generate a force component which acts on the
tool device along a circumferential direction.
5. The quick-clamping system as claimed in claim 3, wherein the at
least one movement-securing unit includes at least one further
movement-securing element arranged on the output spindle, the at
least one further movement-securing element including a conical
extension configured to interact with a fixing aperture of the tool
device.
6. The quick-clamping system as claimed in claim 1, wherein the at
least one movement-securing unit includes at least one
pre-positioning element configured to pre-position the tool device
prior to the tool device being secured by the at least one clamping
device.
7. The quick-clamping system as claimed in claim 6, wherein the at
least one pre-positioning element includes a magnet.
8. The quick-clamping system as claimed in claim 1, wherein the at
least one movement-securing unit has at least one linear abutment
element onto which the tool device is pushed by the at least one
clamping device.
9. The quick-clamping system as claimed in claim 8, wherein the
linear abutment element includes a circular ring.
10. A power tool comprising: an output spindle configured to be
driven in rotation about an output axis of the power tool; and at
least one quick-clamping system comprising: at least one clamping
device which is mounted in a movable manner on the output spindle,
the at least one clamping device configured to axially securing a
tool device on the output spindle of the power tool; and at least
one movement-securing unit, which has at least one
movement-securing element arranged on the clamping device, the at
least one movement-securing element configured to move and/or
secure the tool device.
11. The quick-clamping system as claimed in claim 1, wherein the
quick-clamping system is arranged on a hand-held power tool.
12. The quick-clamping system as claimed in claim 1, wherein the at
least one clamping device is configured to axially secure an
insertion tool on the output spindle.
13. The quick-clamping system as claimed in claim 1, wherein the at
least one movement-securing element is configured to move the tool
device into a rotary carry-along position.
14. The quick-clamping system as claimed in claim 2, wherein the
extension of the further movement-securing element is configured as
an axially-extending extension.
15. The power tool as claimed in claim 10, wherein the power tool
is a hand-held power tool.
Description
PRIOR ART
[0001] A quick-clamping system for a power tool, in particular for
a hand-held power tool, having at least one clamping device which
is mounted in a movable manner in particular on an output spindle
of the power tool, it being possible for said output spindle to be
driven in rotation about an output axis of the power tool, and is
intended at least for axially securing a tool device, in particular
an insertion tool, on the output spindle of the power tool has
already been proposed.
DISCLOSURE OF THE INVENTION
[0002] The invention proceeds from a quick-clamping system for a
power tool, in particular for a hand-held power tool, having at
least one clamping device which is mounted in a movable manner in
particular on an output spindle of the power tool, it being
possible for said output spindle to be driven in rotation about an
output axis of the power tool, and is intended at least for axially
securing a tool device, in particular an insertion tool, on the
output spindle of the power tool.
[0003] It is proposed that the quick-clamping system should
comprise at least one movement-securing unit, which has at least
one movement-securing element which is arranged in particular on
the clamping device and is provided for moving the tool device, in
particular into a rotary carry-along position, and/or for securing
the tool device. The quick-clamping system is preferably designed
to be fixed to the power tool, in particular to a main body of the
power tool. As an alternative, it is conceivable for the
quick-clamping system to be designed such that it can be arranged
in a releasable manner on the power tool, in particular on the main
body and/or on the output spindle. The quick-clamping system is
provided preferably for fastening the tool device of the power
tool, in particular without tools being required. The tool device
is designed preferably in the form of an insertion tool, for
example a saw blade, an abrasive pad or the like. In particular in
a state in which the tool device is secured on the power tool by
means of the quick-clamping system, the tool device can be driven,
preferably in rotation, by the output spindle of the power tool.
Axial securing of the tool device constitutes, in particular,
securing of the tool device along an axial direction of the output
axis of the power tool. "Provided" should be understood to mean, in
particular, specifically designed and/or equipped. The fact that an
object is provided for a specific function should be understood to
mean, in particular, that the object performs and/or executes this
specific function in at least one use state and/or operating
state.
[0004] For axially securing the tool device on the output spindle,
the clamping device preferably comprises at least one hook device,
preferably two hook devices. A hook device should be understood to
mean, in particular, a rotatable, pivotable and/or displaceable
device which has at least one active surface for transmitting a
clamping-force action to the tool device. It is preferably the case
that the hook devices are designed to be capable of relative
movement, in particular pivoting movement about a pivot axis. The
hook devices preferably have a common movement axis, in particular
a common pivot axis. However, it is also conceivable for the hook
devices to have different movement axes, in particular at least
essentially parallel pivot axes. "Essentially parallel" should be
understood to mean, in particular, an orientation of a direction
relative to a reference direction, in particular in a plane, in
which the direction deviates in relation to the reference direction
by, in particular, less than 8.degree., advantageously less than
5.degree. and particularly advantageously less than 2.degree.. The
movement axis, in particular the pivot axis, of the clamping
device, in particular of the hook devices, runs preferably in a
plane which runs transversely, in particular at least essentially
perpendicularly, to the output axis. The movement axis, in
particular the pivot axis, of the clamping device preferably forms
a clamping-device axis of rotation. As seen along the axial
direction of the output axis, the hook devices can be preferably
essentially of C-shaped design. In particular, as seen along the
axial direction of the output axis, two mutually opposite hook
devices can be at least essentially in the form of a sideways eight
or an infinity symbol. The expression "essentially perpendicularly"
is intended to define, in particular, an orientation of a direction
relative to a reference direction in which, as seen in particular
in a plane, the direction and the reference direction enclose an
angle of 90.degree. and the angle has a maximum deviation of, in
particular, less than 8.degree., advantageously less than 5.degree.
and particularly advantageously less than 2.degree..
[0005] The hook devices can be designed to be capable of movement
relative to one another, in particular pivoting movement about the
pivot axis, in an angle range of up to 50.degree., preferably of up
to 40.degree., preferably of up to 30.degree., particularly
preferably of up to 20.degree.. The clamping device or the hook
devices can have, in particular, at least two states, in particular
a fastening state or a release state. In a fastening state, the
hook devices have been extended in a radial direction away from the
output axis, in particular such that, in an extended state, the
hook devices assume a maximum radial extent in relation to one
another. In a fastening state, the hook devices have been connected
to the tool device, in particular engaged therewith, in particular
as a result of the hook devices moving in the radial direction of
the output axis, wherein the tool device can be retained on the
power tool in a form-fitting and/or force-fitting manner by means
of the hook devices. In a fastening state, the tool device has been
connected to the quick-clamping system in a form-fitting manner in
the axial direction of the output axis. In a release state, the
clamping device has, in particular the hook devices have, been
retracted in the radial direction toward the output axis, in
particular such that the clamping device has, in particular the
hook devices have, a maximum radial extent along a direction
running at least essentially perpendicularly to the output axis,
said maximum radial extent being smaller than a minimum radial
extent of the aperture of the tool device. The clamping device, in
particular the hook devices, can preferably be transferred from a
release state into a fastening state by virtue of the tool device
being introduced into the quick-clamping system in the axial
direction of the output axis. The clamping device, in particular
the hook devices, can be understood to be "projecting" if the
clamping device projects or overhangs in relation to a positioning
region which is intended for the axial positioning of the tool
device and limits movement of the tool device, in a fastening state
or a release state, in the axial direction of the output axis. The
term "output axis" preferably denotes an imaginary geometrical axis
of rotation of the quick-clamping system and/or of the output
spindle of the power tool or an imaginary axis of rotation of the
tool device in a state in which the latter is arranged, in
particular fixed, on the quick-clamping system.
[0006] The movement-securing unit, in particular the
movement-securing element, is preferably provided in addition to
the clamping device, for additional securing of the tool device.
However, it is also conceivable for the movement-securing unit to
be provided as an alternative to the clamping device, for securing
the tool device. The movement-securing unit, in particular the
movement-securing element, is provided in particular for radial or
axial securing of the tool device, preferably for radial and axial
securing of the tool device, in particular in a state in which the
tool device is arranged in the quick-clamping system. The
movement-securing element is preferably provided for tool-free, in
particular automatic, securing of the tool device. The
movement-securing element, provided in particular for securing the
tool device, can be designed, in particular, in the form of a
plug-in element, for example in the form of a bolt, a connecting
pin or the like, in the form of a latching element or in the form
of some other movement-securing element which appears to be
expedient to a person skilled in the art.
[0007] As an alternative or in addition to securing the tool
device, the movement-securing element is provided preferably for
realizing a movement of the tool device, in particular into a
rotary carry-along position. A tool device located in a rotary
carry-along position can preferably be driven in particular by the
output spindle and in particular in rotation. The movement-securing
element is preferably provided for moving, in particular for
rotating, the tool device about the output axis. The
movement-securing element provided in particular for moving the
tool device can be designed, in particular in the form of a shaping
of the hook devices which causes the tool device to move as a
result of a contact pressure of the tool device, in particular
while the tool device is being fastened in the quick-clamping
system. As an alternative, it is conceivable for the
movement-securing element provided in particular for moving the
tool device to be designed in the form of a bearing element, for
example in the form of a ball bearing or the like, in the form of a
drive element, in particular a motor-driven one, or in the form of
some other movement-securing element which appears to be expedient
to a person skilled in the art. It is preferably the case that a
movement-securing element is arranged on the hook devices, in
particular on all the hook devices, of the clamping device. The
movement-securing unit preferably comprises a plurality of
movement-securing elements, in particular different ones, which
interact preferably for moving and/or securing the tool device.
[0008] The configuration of the quick-clamping system according to
the invention can advantageously allow convenient installation of a
tool device on a power tool. User-safe fastening of the tool device
on the power tool and advantageously precise orientation of the
tool device on the quick-clamping system can advantageously be
achieved. It is possible to provide a quick-clamping system which
allows advantageously convenient, reliable and precise operation of
a tool device on a power tool.
[0009] It is also proposed that the at least one movement-securing
element arranged in particular on the clamping device should be
designed as a holder and should be provided so that, in at least
one state, it at least partially accommodates a further
movement-securing element of the movement-securing unit, said
further movement-securing element engaging through the tool device
and being designed in the form of an extension, in particular an
axially extending one. In a state in which the tool device is
arranged on the quick-clamping system, in particular in an
actuating state of the clamping device, the further
movement-securing element preferably engages through the tool
device, in particular through a securing aperture of the tool
device. The movement-securing element designed in the form of a
holder preferably has an accommodating region for accommodating the
further movement-securing element, which is designed in the form of
an extension. The accommodating region can be designed preferably
in the form of an aperture, in the form of a depression, in the
form of a convexity in the movement-securing element designed in
the form of a holder, or in the form of some other accommodating
region which appears to be expedient to a person skilled in the
art. The extension can be designed, in particular, in the form of a
bolt, in the form of a connecting pin, in the form of a connecting
stub, in the form of a latching nose or in the form of some other
extension which appears to be expedient to a person skilled in the
art. It is preferably the case that the movement-securing element
designed in the form of a holder is provided for accommodating the
further movement-securing element, which is designed in the form of
an extension, for movement, in particular at least essentially
axial movement, in the direction of the further movement-securing
element, which is designed in the form of an extension. As an
alternative, it is conceivable for the further movement-securing
element, which is designed in the form of an extension, to be
provided for accommodation by the movement-securing element
designed in the form of a holder, for movement, in particular at
least essentially axial movement, in the direction of the
movement-securing element designed in the form of a holder, or for
the two movement-securing elements to be moved toward one another.
It is preferably the case that the movement-securing element
designed in the form of a holder and/or the further
movement-securing element, which is designed in the form of an
extension, to move in particular automatically and/or without tools
being required, as a result of the tool device being fastened on
the quick-clamping system. As an alternative, it is conceivable for
the movement-securing element designed in the form of a holder
and/or the further movement-securing element, which is designed in
the form of an extension, to move as a result of automatic
actuation at least of one of the movement-securing elements. It is
preferably the case that in each case at least one
movement-securing element designed in the form of a holder and at
least one further movement-securing element, which is designed in
the form of an extension, are arranged on each hook device of the
clamping device. Reliable and precise fastening of the tool device
on the quick-clamping system can advantageously be achieved.
[0010] It is further proposed that the movement-securing unit
should be provided to convert a relative movement of the clamping
device into a relative movement of the tool device. The
movement-securing unit is provided, in particular, to convert a
relative movement, in particular a pivoting movement, of the
clamping device, in particular of the hook devices, relative to the
power tool, in particular relative to the output spindle, into a
relative movement of the tool device. The movement-securing unit is
provided preferably to convert a relative movement of the clamping
device into a relative movement, in particular a rotating movement,
of the tool device relative to the clamping device, in particular
relative to the hook devices. In particular, the movement-securing
unit is provided so that a force which acts on the tool device at
least essentially in the axial direction as a result of the
relative movement of the clamping device is converted by said unit
into a force which acts on the tool device at least essentially in
a circumferential direction. The force which acts on the tool
device in the circumferential direction preferably causes a
relative movement of the tool device. The circumferential direction
is, in particular, in the form of a direction which runs at least
essentially in the form of a circular ring, and in particular at
least in a radial plane, about the output axis. The
movement-securing unit is preferably provided by a shaping of the
clamping device, in particular of the hook devices, and/or of the
tool device for converting a relative movement of the clamping
device into a relative movement of the tool device. Essentially
automatic and precise orientation of the tool device on the
quick-clamping system can advantageously be achieved.
[0011] It is also proposed that the at least one movement-securing
element arranged in particular on the clamping device should be
designed in the form of an oblique surface, which is provided to
generate, in dependence on a movement of the clamping device, a
force component which acts on the tool device along a
circumferential direction. The movement-securing element designed
in the form of an oblique surface is preferably formed in one piece
with the clamping device, in particular with the hook device. As an
alternative, it is conceivable for the movement-securing element
designed in the form of an oblique surface to be arranged in a
releasable manner on the clamping device, in particular on the hook
device. The oblique surface is preferably arranged at an acute
angle on the clamping device, in particular on the hook device.
Each of the hook devices of the clamping device preferably has in
each case at least one movement-securing element designed in the
form of an oblique surface. The tool device preferably has at least
one oblique surface designed in particular to complement the
movement-securing element designed in the form of an oblique
surface. The force component which acts on the tool device along
the circumferential direction is preferably generated by a sliding
movement of the tool device on the movement-securing element
designed in the form of an oblique surface, in particular as a
result of the relevant movement of the clamping device, in
particular of the hook devices. A force component which acts on the
tool device in the circumferential direction can advantageously be
generated by adaptation of the geometry of the clamping device, in
particular of the hook device. It is advantageously possible to
provide a cost-effective movement-securing unit which allows
essentially automatic and precise orientation of the tool device on
the quick-clamping system.
[0012] In addition, it is proposed that the movement-securing unit
should have at least one further movement-securing element, which
is arranged in particular on the output spindle and is designed in
the form of a conical extension, which is provided to interact with
a fixing aperture of the tool device. The movement-securing unit
preferably comprises a plurality of further movement-securing
elements, which are designed in the form of conical extensions and
are arranged on the output spindle, in particular, at a radial
spacing apart from the clamping device and, in particular, along a
circular ring around the clamping device. The tool device
preferably comprises a number of fixing apertures corresponding to
a number of further movement-securing elements, which are designed
in the form of conical extensions. The further movement-securing
element, which is designed in the form of a conical extension, is
preferably of conical design as seen along the pivot axis. As an
alternative or in addition, it is conceivable for the further
movement-securing element, which is designed in the form of a
conical extension, to be of conical design as seen along the axial
direction of the output axis. In particular, the further
movement-securing element, which is designed in the form of a
conical extension, is provided so that the tool device, which is
moved by the oblique surface, is clamped firmly by said further
movement-securing element as the latter interacts with the fixing
aperture of the tool device. It is preferably the case that the
fixing aperture of the tool device is of conical design to
complement the further movement-securing element, which is designed
in the form of a conical extension, and/or has a conical cross
section designed in particular to complement the conical extension.
In a state in which the tool device is fastened on the
quick-clamping system, in particular in a fastening state of the
clamping device, the conical extension and the fixing aperture
preferably interact. The conical extension preferably engages in
the fixing aperture, in particular in a flush manner. It is
preferably the case that the conical extension can be brought into
engagement with the fixing aperture as a result of the tool device
being moved by the oblique surface. While the tool device is being
fastened on the quick-clamping system, the tool device moves,
preferably on account of the oblique surface, relative to the
further movement-securing element, which is designed in the form of
a conical extension, such that the further movement-securing
element, which is designed in the form of a conical extension and
is previously arranged in a wide sub-portion of the fixing
aperture, clamps the tool device firmly in a rotary carry-along
position, with arrangement in a narrow sub-portion of the fixing
aperture. Reliable fastening of the tool device and precise
orientation of the tool device on the quick-clamping system can
advantageously be achieved.
[0013] It is also proposed that the movement-securing unit should
have at least one pre-positioning element, which is provided to
pre-position the tool device prior to the latter being secured by
means of the clamping device. In particular, the pre-positioning
element is provided to retain the tool device on the quick-clamping
system counter to a gravitational force which acts on the tool
device, prior to the latter being secured by means of the clamping
device. The pre-positioning element is arranged, in particular on
the output spindle, at a radial spacing apart from the clamping
device preferably along a circumferential direction, or extends at
least in part along the circumferential direction. The
pre-positioning element can be provided preferably for
pre-positioning the tool device by means of a magnetic, of an
electrostatic, of a mechanical, of a pneumatic force and/or of some
other force which appears to be expedient to a person skilled in
the art. The pre-positioning element can be designed, in
particular, in the form of a magnet, of an electrostatically
charged plate, of a radially acting latching-action spring bolt, of
an adhesive pad, of a suction cup or of some other pre-positioning
element which appears to be expedient to a person skilled in the
art. The movement-securing unit can preferably have a plurality of
pre-positioning elements, in particular arranged along the
circumferential direction. Precise pre-positioning of the tool
device can advantageously allow convenient installation of the tool
device.
[0014] It is further proposed that the pre-positioning element
should be designed in the form of a magnet. The pre-positioning
element is preferably designed in the form of a permanent magnet.
As an alternative, it is conceivable for the pre-positioning
element to be designed in the form of an electromagnet. The
pre-positioning element designed in the form of a magnet preferably
has a retaining force which is greater than a weight-induced force
of the tool device. The movement-securing unit preferably comprises
a plurality of pre-positioning elements designed in the form of
magnets. In particular, the pre-positioning element can be designed
in the form of an annular magnet, which extends in particular at
least in part along the circumferential direction. Precise and at
least essentially wear-free pre-positioning of the tool device can
advantageously be achieved.
[0015] It is also proposed that the movement-securing unit should
have at least one linear abutment element, onto which the tool
device can be pushed by means of the clamping device. The linear
abutment element is preferably arranged at least partially along
the circumferential direction. In particular, the linear abutment
element is designed at least essentially symmetrically, in
particular about the output axis forming the axis of symmetry. The
linear abutment element is preferably designed in the form of a
closed line. As seen in particular in the radial direction of the
output axis, the linear abutment element has, in particular, a
width of at most 10 mm, preferably a width of at most 5 mm and
particularly preferably a width of at most 2 mm. In a fastening
state of the clamping device, it is preferably the case that the
clamping device pushes, in particular the hook devices push, the
tool device onto the linear abutment element. In a state in which
the tool device is fastened on the quick-clamping system, in
particular in a fastening state of the clamping device, the linear
abutment element is preferably oriented at least essentially
parallel to a main-extent plane, in particular to a tool-abutment
surface, of the tool device. A "main-extent plane" of a unit should
be understood to mean, in particular, a plane which is parallel to
the largest side surface of the smallest imaginary cuboid which
only just encloses the unit in full, said plane running in
particular through the center point of the cuboid. The
tool-abutment surface is, in particular, a surface of the tool
device which, in a state in which the tool device is arranged on
the quick-clamping system, in particular in a fastening state of
the clamping device, butts against the linear abutment element. As
an alternative or in addition to the linear abutment element, it is
conceivable for the movement-securing unit to have at least one
engagement element, in particular a conically shaped engagement
element. In particular, the engagement element is provided so that,
in particular in a state in which the tool device is fastened on
the quick-clamping system, it engages in a depression element of
the tool device, in particular a conically shaped depression
element. In particular in a fastening state of the clamping device,
the engagement element can preferably be pushed into the depression
element of the tool device by means of the clamping device, in
particular by means of the hook devices. In particular, the
depression element can be designed in the form of a depression in
the tool device, in the form of an aperture in the tool device or
in the form of some other depression element which appears to be
expedient to a person skilled in the art. Precise orientation of
the tool device on the quick-clamping system can advantageously be
achieved. Advantageous concentricity of the tool device with a low
risk of imbalance can be made possible.
[0016] In addition, it is proposed that the linear abutment element
should be designed, at least in part, in the form of a circular
ring. It is preferably the case that the entire abutment element is
designed in the form of a circular ring. In particular, the linear
abutment element is designed, at least in part, in the form of a
circular ring which is symmetrical about the output axis. The
movement-securing unit can preferably have a plurality of linear
abutment elements which, in particular forming portions of a
circular ring, are arranged at least in the form of a circular
ring. It is advantageously possible to achieve at least essentially
uniform contact pressure at least essentially along a complete
circumference of the tool device. Precise orientation of the tool
device on the quick-clamping system can advantageously be
achieved.
[0017] The invention also proceeds from a power tool, in particular
from a hand-held power tool, having at least one quick-clamping
system according to the invention. In particular, the power tool
can be designed in the form of a grinder, in particular in the form
of an angle grinder, in the form of a saw, in the form of a
multifunctional tool or in the form of some other power tool which
appears to be expedient to a person skilled in the art. The power
tool can preferably have further components, in particular
components which are necessary for operation of the power tool. In
particular, the power tool can have a housing, a handle, a
power-supply unit, for example a (rechargeable) battery, a battery,
a mains supply or the like, a drive unit, an output unit and/or
other components which appear to be expedient to a person skilled
in the art. It is advantageously possible to provide a power tool
on which a tool device can be fastened conveniently and
reliably.
[0018] The quick-clamping system according to the invention and/or
the power tool according to the invention should not be limited
here to the embodiment and use described above. In particular, in
order to perform a function described herein, the quick-clamping
system according to the invention and/or the power tool according
to the invention can have a number of individual elements,
components and units which differs from the number mentioned
herein. In addition, in the case of the ranges of values specified
in this disclosure, values lying within the stated limits are also
to be considered as disclosed and usable in any way desired.
DRAWINGS
[0019] Further advantages can be gathered from the following
description of the drawings. The drawings illustrate four exemplary
embodiments of the invention. The drawings, the description and the
claims contain numerous features in combination. A person skilled
in the art will expediently also consider the features individually
and combine them to give further advantageous combinations. In the
drawings:
[0020] FIG. 1 shows a schematic illustration of a power tool
according to the invention,
[0021] FIG. 2 shows a schematic sectional illustration of a first
quick-clamping system according to the invention,
[0022] FIG. 3 shows a schematic illustration of a tool device,
[0023] FIG. 4 shows a schematic sectional illustration of a second,
alternative quick-clamping system,
[0024] FIG. 5 shows a schematic sectional illustration of a third,
alternative quick-clamping system,
[0025] FIG. 6 shows a detail of the third, alternative
quick-clamping system, and
[0026] FIG. 7 shows a schematic sectional illustration of a fourth,
alternative quick-clamping system.
DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
[0027] FIG. 1 shows a perspective illustration of a power tool 12a.
The power tool 12a is designed in the form of a hand-held power
tool. The power tool 12a is designed in the form of a grinder. The
power tool 12a is designed in the form of an angle grinder. As an
alternative, it is conceivable for the power tool 12a to be
designed in the form of a saw, of a multifunctional tool or the
like. The power tool 12a comprises a quick-clamping system 10a (not
illustrated any more specifically). A tool device 20a is arranged
on the power tool 12a by means of the quick-clamping system 10a.
The tool device 20a is designed in the form of an insertion tool.
The tool device 20a is designed in the form of an abrasive pad. As
an alternative, it is conceivable for the tool device 20a to be
designed in the form of a saw blade or the like. The power tool 12a
has a housing unit 46a. Within the housing unit 46a, the power tool
12a comprises a drive unit 48a and an output unit 50a. The drive
unit 40a is provided for driving the output unit 50a. The output
unit 50a is provided to drive the tool device 20a in rotation about
an output axis 14a by means of an output spindle 16a of the power
tool 12a. The power tool 12a can comprise further components which
are necessary for operating the power tool 12a.
[0028] FIG. 2 shows a schematic sectional illustration of the
quick-clamping system 10a. The quick-clamping system 10a is fixed
to the power tool 12a. As an alternative, it is conceivable for the
quick-clamping system 10a to be designed such that it can be
arranged in a releasable manner on the power tool 12a, in
particular on a main body and/or on an output spindle 16a of the
power tool 12a. The quick-clamping system 10a comprises a clamping
device 18a. The clamping device 18a is mounted in a movable manner
on the output spindle 16a of the power tool 12a, it being possible
for said output spindle to be driven in rotation about the output
axis 14a of the power tool 12a. The clamping device 18a is provided
for axially securing the tool device 20a on the output spindle 16a
of the power tool 12a, said tool device being designed in the form
of an insertion tool.
[0029] The quick-clamping system 10a comprises a movement-securing
unit 22a. The movement-securing unit 22a has at least one
movement-securing element 24a, 26a which is arranged in particular
on the clamping device 18a. The at least one movement-securing
element 24a, 26a is provided for moving the tool device 20a, in
particular into a rotary carry-along position, and/or for securing
the tool device 20a. The quick-clamping system 10a is provided for
fastening the tool device 20a on the power tool 12a, in particular
without tools being required. In a state in which the tool device
20a is secured on the power tool 12a by means of the quick-clamping
system 10a, the tool device 20a can be driven in rotation by the
output spindle 16a of the power tool 12a. Axial securing of the
tool device 20a constitutes securing of the tool device 20a along
an axial direction of the output axis 14a.
[0030] For axial securing of the tool device 20a on the output
spindle 16a, the clamping device 18a comprises a first hook device
52a and a second hook device 54a. The hook devices 52a, 54a are
designed in the form of hook jaws. The second hook device 54a is
designed essentially analogously to the first hook device 52a. The
hook devices 52a, 54a are designed to be capable of relative
movement, in particular pivoting movement about a pivot axis 56a.
The hook devices 52a, 54a have a common pivot axis 56a. However, it
is also conceivable for the hook devices 52a, 54a to have different
pivot axes. The pivot axis 56a of the clamping device 18a, in
particular of the hook devices 52a, 54a, runs in a plane running
transversely, in particular essentially perpendicularly, to the
output axis 14a. The pivot axis 56a of the clamping device 18a
forms a clamping-device axis of rotation. As seen along the output
axis 14a, the hook devices 52a, 54a are essentially of C-shaped
design. As seen along the output axis 14a, the two mutually
opposite hook devices 52a, 54a are essentially in the form of a
sideways eight or an infinity symbol.
[0031] The hook devices 52a, 54a are designed to be capable of
movement relative to one another, in particular pivoting movement
about the pivot axis 56a, in an angle range of up to 50.degree.,
preferably of up to 40.degree., preferably of up to 30.degree.,
particularly preferably of up to 20.degree..The clamping device 18a
or the hook devices 52a, 54a can have two states. The clamping
device 18a or the hook devices 52a, 54a can have a fastening state
or a release state. In a fastening state, the hook devices 52a, 54a
have been extended in a radial direction away from the output axis
14a, in particular such that, in an extended state, the hook
devices 52a, 54a assume a maximum radial extent in relation to one
another. In a fastening state, the hook devices 52a, 54a have been
connected to the tool device 20a. In a fastening state, the hook
devices 52a, 54a have been engaged with the tool device 20a as a
result of the hook devices 52a, 54a moving in the radial direction
of the output axis 14a. The tool device 20a can be retained on the
power tool 12a in a form-fitting and/or force-fitting manner by
means of the hook devices 52a, 54a. In a fastening state, the tool
device 20a has been connected to the quick-clamping system 10a in a
form-fitting manner in the axial direction of the output axis 14a.
In a release state, the clamping device 18a has, in particular the
hook devices 52a, 54a have, been retracted in the radial direction
toward the output axis 14a such that the clamping device 18a has,
in particular the hook devices 52a, 54a have, a maximum radial
extent along a direction running essentially perpendicularly to the
output axis 14a, said maximum radial extent being smaller than a
minimum radial extent of an aperture of the tool device 20a. The
clamping device 18a, in particular the hook devices 52a, 54a, can
be transferred from a release state to a fastening state by virtue
of the tool device 20a being introduced into the quick-clamping
system 10a in the axial direction of the output axis 14a. FIG. 2
illustrates the hook devices 52a, 54a in a release state.
[0032] The movement-securing unit 22a has a first movement-securing
element 24a and a second movement-securing element 26a. The first
movement-securing element 24a is arranged on the first hook device
52a. The first movement-securing element 24a is arranged on a first
inner side 58 of the first hook device 52a. The second
movement-securing element 26a is arranged on the second hook device
54a. The second movement-securing element 26a is arranged on a
second inner side 60 of the second hook device 54a. As an
alternative, it is conceivable for the movement-securing elements
24a, 26a to be arranged on other inner sides and/or outer sides of
the hook devices 52a, 54a. The movement-securing elements 24a, 26a
are provided for realizing movement of the tool device 20a, in
particular into a rotary carry-along position. A tool device 20a
which is located in a rotary carry-along position can be driven in
rotation by the output spindle 16a. The movement-securing elements
24a, 26a are provided for moving, in particular for rotating, the
tool device 20a about the output axis 14a. The movement-securing
elements 24a, 26a provided for moving the tool device 20a are
designed in the form of shapings of the hook devices 52a, 54a which
cause the tool device 20a to move as a result of a contact pressure
of the tool device 20a, in particular while the tool device 20a is
being fastened in the quick-clamping system 10a. The
movement-securing elements 24a, 26a are designed in the form of
oblique surfaces. As an alternative, it is conceivable for the
movement-securing elements 24a, 26a provided for moving the tool
device 20a to be designed in the form of bearing elements, for
example in the form of ball bearings or the like, or in the form of
motor-driven drive elements or the like. The movement-securing
elements 24a, 26a interact in order to move the tool device 20a.
The movement-securing unit 22a is provided to convert a relative
movement of the clamping device 18a into a relative movement of the
tool device 20a. The movement-securing unit 22a is provided to
convert a pivoting movement of the clamping device 18a, in
particular of the hook devices 52a, 54a, relative to the power tool
12a, in particular relative to the output spindle 16a, into a
relative movement of the tool device 20a. The movement-securing
unit 22a is provided to convert a relative movement of the clamping
device 18a into a rotating relative movement of the tool device 20a
relative to the clamping device 18a, in particular relative to the
hook devices 52a, 54a. The movement-securing unit 22a is provided
so that a force component which acts on the tool device 20a
essentially in the axial direction as a result of the relative
movement of the clamping device 18a is converted by said unit into
a force component which acts on the tool device 20a essentially in
a circumferential direction. The force which acts on the tool
device 20a in the circumferential direction causes a relative
movement of the tool device 20a. The circumferential direction is
in the form of a direction which runs essentially in the form of a
circular ring, and in a radial plane, about the output axis 14a.
The movement-securing unit 22a is provided by a shaping of the
clamping device 18a, in particular of the hook devices 52a, 54a,
and/or of the tool device 20a for converting a relative movement of
the clamping device 18a into a relative movement of the tool device
20a.
[0033] The at least one movement-securing element 24a, 26a arranged
in particular on the clamping device 18a is designed in the form of
an oblique surface. The oblique surface is provided to generate, in
dependence on a movement of the clamping device 18a along a
circumferential direction, a force component which acts on the tool
device 20a. The movement-securing elements 24a, 26a designed in the
form of oblique surfaces are formed in one piece with the clamping
device 18a, in particular with the hook devices 52a, 54a. As an
alternative, it is conceivable for the movement-securing elements
24a, 26a designed in the form of oblique surfaces to be arranged in
a releasable manner on the clamping device 18a, in particular on
the hook devices 52a, 54a. The oblique surfaces are arranged at an
acute angle on the clamping device 18a, in particular on the hook
devices 52a, 54a. Each of the hook devices 52a, 54a of the clamping
device 18a has in each case at least one movement-securing element
24a, 26a designed in the form of an oblique surface. The tool
device 20a can have at least one oblique surfaces designed to
complement the movement-securing elements 24a, 26a designed in form
of oblique surfaces. The force component which acts on the tool
device 20a along the circumferential direction is generated by a
sliding movement of the tool device 20a along the movement-securing
elements 24a, 26a designed in the form of oblique surfaces, as a
result of the relative movement of the clamping device 18a, in
particular of the hook devices 52a, 54a.
[0034] The movement-securing unit 22a has at least one further
movement-securing element 32a, 34a, which is arranged in particular
on the output spindle 16a and is designed in the form of a conical
extension, which is provided to interact with a fixing aperture
36a, 38a of the tool device 20a (cf. FIG. 3). The movement-securing
unit 22a has a first further movement-securing element 32a, which
is designed in the form of a conical extension, and a second
further movement-securing element 34a, which is designed in the
form of a conical extension. The movement-securing unit 22c can
have a number other than two of further movement-securing elements
32a, 34a, which are designed in the form of conical extensions and
are arranged on the output spindle 16a at a radial spacing apart
from a clamping device 18a and in the form of a circle around the
clamping device 18a. The tool device 20a comprises a number of
fixing apertures 36a, 38a corresponding to a number of further
movement-securing elements 32a, 34a, which are designed in the form
of conical extensions. The further movement-securing elements 32a,
34a, which are designed in the form of conical extensions, are
arranged on an abutment surface 62a of the output spindle 16a. In a
state in which the tool device 20a is arranged on the
quick-clamping system, the tool device 20a has been pushed onto the
abutment surface 62a. The further movement-securing elements 32a,
34a, which are designed in the form of conical extensions, are of
conical design as seen in the direction of the pivot axis 56a. The
further movement-securing elements 32a, 34a, which are designed in
the form of conical extensions, are arranged outside an internal
diameter 64a of the clamping device 18a. The further
movement-securing elements 32a, 34a, which are designed in the form
of conical extensions, are provided so that the tool device 20a,
which is moved by the oblique surfaces, is clamped firmly by said
further movement-securing elements as the latter interact with the
fixing apertures 36a, 38a of the tool device 20a.
[0035] FIG. 3 shows a schematic illustration of the tool device
20a. It illustrates a hub of the tool device 20a. The tool device
20a has a first fixing aperture 36a and a second fixing aperture
38a. The fixing apertures 36a, 38a are of conical design along the
circumferential direction. The fixing apertures 36a, 38a of the
tool device 20a are of conical design to complement the further
movement-securing elements 32a, 34a, which are designed in the form
of conical extensions. In a state in which the tool device 20a is
fastened on a quick-clamping system 10a, in particular in a
fastening state of the clamping device 18a, the conical extensions
and the fixing apertures 36a, 38a interact. While the tool device
20a is being fastened on the quick-clamping system 10a, the tool
device moves, on account of the oblique surfaces, relative to the
further movement-securing elements 32a, 34a, which are designed in
the form of conical extensions, such that the further
movement-securing elements 32a, 34a, which are designed in the form
of conical extensions and are previously arranged in wide
sub-portions 66a of the fixing apertures 36a, 38a, clamp the tool
device 20a firmly in narrow sub-portions 68a of the fixing
apertures 36a, 38a, with arrangement in a rotary carry-along
position.
[0036] FIGS. 4 to 7 show three further exemplary embodiments of the
invention. The descriptions below and the drawings are limited
essentially to the differences between the exemplary embodiments,
wherein, as far as components with like references are concerned,
in particular as far as components with like reference signs are
concerned, reference can basically also be made to the drawings
and/or the description relating to the other exemplary embodiments,
in particular those of FIGS. 1 to 3. In order to distinguish
between the exemplary embodiments, the letter a has been placed
after the reference sign of the exemplary embodiment in FIGS. 1 to
3. The letter a has been replaced by the letters b to d in the
exemplary embodiments of FIGS. 4 to 7.
[0037] FIG. 4 shows a schematic sectional illustration of a second,
alternative quick-clamping system 10b. The quick-clamping system
10b is illustrated along the same sectional plane as the
quick-clamping system 10a of the first exemplary embodiment in FIG.
1. A movement-securing unit 22b of the quick-clamping system 10b
has at least one further movement-securing element 32b, 34b, which
is arranged in particular on the output spindle 16b and is designed
in the form of a conical extension, which is provided to interact
with a fixing aperture 36b, 38b of a tool device 20b. The
movement-securing unit 22b has a first further movement-securing
element 32b, which is designed in the form of a conical extension,
and a second further movement-securing element 34b, which is
designed in the form of a conical extension. The movement-securing
unit 22b can have a number other than two of further
movement-securing elements 32b, 34b, which are designed in the form
of conical extensions and are arranged on the output spindle 16b at
a radial spacing apart from a clamping device 18b and in the form
of a circular ring around the clamping device 18b. The tool device
20b comprises a number of fixing apertures 36b, 38b corresponding
to a number of further movement-securing elements 32b, 34b, which
are designed in the form of conical extensions. The further
movement-securing elements 32b, 34b, which are designed in the form
of conical extensions, are of conical design as seen along the
output axis 14b. The further movement-securing elements 32b, 34b,
which are designed in the form of conical extensions, are provided
for fixing the tool device in the axial direction of the output
axis 14b.The fixing apertures 36b, 38b of the tool device 20b have
conical cross sections designed to complement the conical
extensions. In a state in which the tool device 20b is fastened on
a quick-clamping system 10b, in particular in a fastening state of
the clamping device 18b, the conical extensions and the fixing
apertures 36b, 38b interact. The conical extensions each engage in
the fixing apertures 36b, 38b in a flush manner.
[0038] FIG. 5 shows a schematic sectional illustration of a third,
alternative quick-clamping system 10c. The quick-clamping system
10c is illustrated along the same sectional plane as the
quick-clamping system 10a of the first exemplary embodiment in FIG.
1. A movement-securing unit 22c of the quick-clamping system 10c
comprises movement-securing elements 24c, 26c designed in the form
of carry-along jaws for rotary carry-along of a tool device 20c.
the movement-securing unit 22c has a linear abutment element 44c.
The linear abutment element 44c is provided instead of the abutment
surface 62a of the first exemplary embodiment. The tool device 20c
can be pushed onto the linear abutment element 44c by means of a
clamping device 18c. The linear abutment element 44c is arranged
along a circumferential direction. The linear abutment element 44c
is designed essentially symmetrically about an output axis 14c
forming the axis of symmetry. The linear abutment element 44c is of
crosspiece-like design, in the form of a closed line. In particular
as seen in the radial direction of the output axis 14c, the linear
abutment element 44c has, in particular, a width of at most 10 mm,
preferably a width of at most 5 mm and particularly preferably a
width of at most 2 mm. In a fastening state of the clamping device
18c, the clamping device 18c pushes, in particular hook devices
52c, 54c push, the tool device 20c onto the linear abutment element
44c. In a state in which the tool device 20c is fastened on the
quick-clamping system 10c, in particular in a fastening state of
the clamping device 18c, the linear abutment element 44c is
oriented essentially parallel to a main-extent plane, in particular
to a tool-abutment surface, of the tool device 20c. The
tool-abutment surface is a surface of the tool device 20c which, in
a state in which the tool device 20c is arranged on the
quick-clamping device 10c, in particular in a fastening state of
the clamping device 18c, butts against the linear abutment element
44c. As an alternative or in addition to the linear abutment
element 44c, it is conceivable for the movement-securing unit 22c
to have at least one conically shaped engagement element. The
engagement element is provided so that, in a state in which the
tool device 20c is fastened on the quick-clamping system 10c, it
engages in a conically shaped depression element of the tool device
20c. In a fastening state of the clamping device 18c, the
engagement element can be pushed into the depression element of the
tool device 20c by means of the clamping device 18c, in particular
by means of the hook devices 52c, 54c. The depression element can
be designed in the form of a depression in the tool device 20c, or
in the form of an aperture in the tool device 20c or the like.
[0039] The linear abutment element 44c is designed, at least in
part, in the form of a circular ring. The entire linear abutment
element 44c is designed in the form of a circular ring. The linear
abutment element 44c is designed in the form of a circular ring
which is symmetrical about the output axis 14c. The linear abutment
element 44c has a larger diameter than an internal diameter 64c.
The movement-securing unit 22c can have more than one linear
abutment element 44c, and said linear abutment elements, forming
portions of a circular ring, can be arranged in the form of a
circular ring.
[0040] FIG. 6 shows a detail of the third, alternative
quick-clamping system 10c. The movement-securing unit 22c has at
least one pre-positioning element 40c, 42c. The pre-positioning
element 40c, 42c is provided to pre-position the tool device 20c
prior to the latter being secured by means of the clamping device
18c. The movement-securing unit 22c has a first pre-positioning
element 40c and a second pre-positioning element 42c. The
pre-positioning elements 40c, 42c are provided to retain the tool
device 20c on the quick-clamping system 10c counter to a
gravitational force which acts on the tool device 20c, prior to the
latter being secured by means of the clamping device 18c. The
pre-positioning elements 40c, 42c are arranged on the output
spindle 16c at a radial spacing apart from the clamping device 18c
along a circumferential direction. As an alternative, it is
conceivable for the pre-positioning elements 40c, 42c to extend at
least in part along the circumferential direction. The
pre-positioning elements 40c, 42c are provided for pre-positioning
the tool device 20c by means of a magnetic force. As an
alternative, it is conceivable for the pre-positioning elements
40c, 42c to be provided for pre-positioning the tool device 20c by
means of an electrostatic, of a mechanical or of a pneumatic force
or the like. The pre-positioning elements 40c, 42c are designed in
the form of magnets. As an alternative, it is conceivable for the
pre-positioning elements 40c, 42c to be designed in the form of
electrostatically charged plates, in the form of radially acting
latching-action spring bolts, in the form of adhesive pads, in the
form of suction cups or the like. The movement-securing unit 22c
can have a number other than two of pre-positioning elements 40c,
42c. The pre-positioning elements 40c, 42c are designed in the form
of permanent magnets. As an alternative, it is conceivable for the
pre-positioning elements 40c, 42c to be designed in the form of
electromagnets. The pre-positioning elements 40c, 42c designed in
the form of magnets have a retaining force which is greater than a
weight-induced force of the tool device 20c.
[0041] FIG. 7 shows a schematic sectional illustration of a fourth,
alternative quick-clamping system 10d. The quick-clamping system
10d is illustrated along the same sectional plane as the
quick-clamping system 10a of the first exemplary embodiment in FIG.
1. A movement-securing unit 22d of the quick-clamping system 10d
has a first movement-securing element 24d and a second
movement-securing element 26d. The first movement-securing element
24d is arranged on a first hook device 52d of a clamping device 18d
and the second movement-securing element 26d is arranged on a
second hook device 54d of the clamping device 18d. The first
movement-securing element 24d is designed essentially analogously
to the second movement-securing element 26d. The at least one
movement-securing element 24d, 26d arranged in particular on the
clamping device 18d is designed in the form of a holder. The at
least one movement-securing element 24d, 26d is provided so that,
in at least one state, it at least partially accommodates a further
movement-securing element 28d, 30d of the movement-securing unit
22d, said further movement-securing element engaging through the
tool device 20d and being designed in the form of an extension, in
particular an axially extending one. The first movement-securing
element 24d is provided so that, in a fastening state of the
clamping device 18d, it accommodates the first further
movement-securing element 28d, which engages through the tool
device 20d and is designed in the form of an axially extending
extension. The second movement-securing element 26d is provided so
that, in a fastening state of the clamping device 18d, it
accommodates the second further movement-securing element 30d,
which engages through the tool device 20d and is designed in the
form of an axially extending extension. The further
movement-securing elements 28d, 30d, which are designed in the form
of extensions, are arranged on an abutment surface 62d at a radial
spacing apart from an output axis 14d. The further
movement-securing elements 28d, 30d, which are designed in the form
of extensions, are arranged within an internal diameter 64d. The
first further movement-securing element 28d, which is designed in
the form of an extension, is designed essentially analogously to
the second further movement-securing element 30d, which is designed
in the form of an extension. In a state in which the tool device
20d is arranged on a quick-clamping system 10d, in particular in a
actuating state of the clamping device 18d, the first further
movement-securing element 28d, which is designed in the form of an
extension, engages through the tool device 20d, in particular
through a first securing aperture 70d of the tool device 20d. In a
state in which the tool device 20d is arranged on a quick-clamping
system 10d, in particular in an actuating state of the clamping
device 18d, the second further movement-securing element 30d, which
is designed in the form of an extension, engages through the tool
device 20d, in particular through a second securing aperture 72d of
the tool device 20d.
[0042] The first movement-securing element 24d designed in the form
of a holder has a first accommodating region 74d for accommodating
the second further movement-securing element 30d, which is designed
in the form of an extension. The first accommodating region 74d is
designed in the form of a depression in the first movement-securing
element 24d, designed in the form of a holder.
[0043] The second movement-securing element 26d designed in the
form of a holder has a second accommodating region 76d for
accommodating the second further movement-securing element 30d,
which is designed in the form of an extension. The accommodating
region 76d is designed in the form of a depression in the second
movement-securing element 26d designed in the form of a holder. As
an alternative, it is conceivable for the accommodating regions
74d, 76d to be designed in the form of apertures, or in the form of
convexities or the like in the movement-securing elements 24d, 26d
designed in the form of holders. The extensions are designed in the
form of bolts. As an alternative, it is conceivable for the
extensions to be designed in the form of connecting pins, in the
form of connecting stubs, or in the form of latching noses or the
like. The movement-securing elements 24d, 26d designed in the form
of holders are provided for accommodating the further
movement-securing elements 28d, 30d, which are designed in the form
of extensions, for essentially axial movement in the direction of
the further movement-securing elements 28d, 30d, which are designed
in the form of extensions. As an alternative, it is conceivable for
the further movement-securing elements 28d, 30d, which are designed
in the form of extensions, to be provided for accommodation by the
movement-securing elements 24d, 26d designed in the form of
holders, for essentially axial movement in the direction of the
movement-securing elements 24d, 26d designed in the form of
holders, or for the movement-securing elements 24d, 26d, 28d, 30d
to move toward one another in each case. The movement-securing
elements 24d, 26d designed in the form of holders and/or the
further movement-securing elements 28d, 30d, which are designed in
the form of extensions, move in particular automatically and/or
without tools being required, as a result of the tool device 20d
being fastened on the quick-clamping system 10d. As an alternative,
it is conceivable for the movement-securing elements 24d, 26d
designed in the form of holders and/or the further
movement-securing elements 28d, 30d, which are designed in the form
of extensions, to move as a result of automatic actuation of at
least one of the movement-securing elements 24d, 26d, 28d, 30d. A
respective movement-securing element 24d, 26d designed in the form
of a holder and a further movement-securing element 28d, 30d, which
is designed in the form of an extension, are arranged on each hook
device 52d, 54d of the clamping device 18d. The movement-securing
unit 22d is provided in addition to the clamping device 18d, for
additionally securing the tool device 20d. However, it is also
conceivable for the movement-securing unit 22d to be provided as an
alternative to the clamping device 18d, for securing the tool
device 20d. The movement-securing unit 22d is provided for radial
and axial securing of the tool device 20d, in a state in which the
tool device 20d is arranged in the quick-clamping system 10d. The
movement-securing unit 22d is provided for tool-free, in particular
automatic, securing of the tool device 20d.
* * * * *