U.S. patent application number 15/742638 was filed with the patent office on 2018-09-27 for v-drive and slide element for the same.
The applicant listed for this patent is VOESTALPINE GIESSEREI LINZ GMBH. Invention is credited to Markus Meyer.
Application Number | 20180272409 15/742638 |
Document ID | / |
Family ID | 53539560 |
Filed Date | 2018-09-27 |
United States Patent
Application |
20180272409 |
Kind Code |
A1 |
Meyer; Markus |
September 27, 2018 |
V-DRIVE AND SLIDE ELEMENT FOR THE SAME
Abstract
A slide element for a wedge drive, with a slide element
receptacle and a drive element between which the slide element is
to be placed. In order to achieve a high wear resistance and a
simple design, it is proposed for the slide element to have a head
rail, which is detachably fastened to the slide element and, as
part of the dovetail-shaped side of the slide element, forms the
second sliding surfaces on the dovetail-shaped section, by means of
which forces are transmitted during the return stroke during which
the slide element receptacle is moved away from the drive
element.
Inventors: |
Meyer; Markus; (Wangen im
Allgau, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
VOESTALPINE GIESSEREI LINZ GMBH |
Linz |
|
AT |
|
|
Family ID: |
53539560 |
Appl. No.: |
15/742638 |
Filed: |
July 7, 2016 |
PCT Filed: |
July 7, 2016 |
PCT NO: |
PCT/EP2016/066193 |
371 Date: |
April 21, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B21D 19/084 20130101;
Y10T 74/18936 20150115; B21D 28/325 20130101; B23Q 1/42 20130101;
B21D 37/12 20130101 |
International
Class: |
B21D 37/12 20060101
B21D037/12 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 7, 2015 |
EP |
15175775.4 |
Claims
1. A slide element for a wedge drive with a slide element
receptacle and a drive element between which the slide element is
to be placed; the slide element comprising: a dovetail-shaped side,
which has a dovetail-shaped section with a plurality of sliding
surfaces and is embodied to engage in a correspondingly
dovetail-shaped receptacle of the slide element receptacle; a first
plurality of the sliding surfaces on the slide element, by means of
which forces are transmitted during a working stroke during which
the slide element is moved outward between the drive element and
the slide element receptacle, are arranged at an angle to each
other, in a roof shape relative to each other, and have sliding
plates; and the first plurality of sliding surfaces on the slide
element, by means of which forces are transmitted during the
working stroke, are larger than a second plurality of the sliding
surfaces on the slide element, by means of which forces are
transmitted during the return stroke during which the slide element
receptacles is moved away from the drive element, wherein the slide
element has a head rail, which is detachably fastened to the slide
element and, as part of the dovetail-shaped side of the slide
element, forms the second plurality of sliding surfaces on the
dovetail-shaped section, by means of which forces are transmitted
during the return stroke during which the slide element receptacle
is moved away from the drive element.
2. The slide element according to claim 1, wherein the head rail is
fastened with a rail foot in an at least form-fitting fashion in a
T-shaped groove in the slide element.
3. The slide element according to claim 1, wherein the sliding
plates are detachably fastened to the slide element.
4. A wedge drive with a slide element receptacle, a movable slide
element according to claim 1, and a drive element; wherein sliding
surfaces are provided between the slide element and the drive
element; between the slide element and the slide element
receptacle, a dovetail-shape guide device is provided with sliding
surfaces on the slide element and sliding surfaces on the slide
element receptacle; the dovetail-shaped section of the slide
element engages in a correspondingly dovetail-shaped receptacle of
the slide element receptacle; and on the sliding surfaces of the
guide device on the slide element receptacle, respective sliding
plates are arranged symmetrically and embodied in an L shape with
the narrow side facing inward, forming the dovetail shape.
Description
FIELD OF THE INVENTION
[0001] The invention relates to a slide element for a wedge drive
with a slide element receptacle and a drive element between which
the slide element is to be placed; the slide element has a
dovetail-shaped side with a dovetail-shaped section with sliding
surfaces and is embodied to engage in a correspondingly
dovetail-shaped receptacle of the slide element receptacle; the
first sliding surfaces on the slide element, by means of which
forces are transmitted during the working stroke during which the
slide element is moved outward between the drive element and the
slide element receptacle, are arranged at an angle to each other,
in a roof shape relative to each other, and have sliding plates;
and these first sliding surfaces on the slide element, by means of
which forces are transmitted during the working stroke, are larger
than the second sliding surfaces on the slide element, by means of
which forces are transmitted during the return stroke during which
the slide element receptacle is moved away from the drive
element
BACKGROUND OF THE INVENTION
[0002] In order to be able to form a dovetail shape on a slide
element, it is known from the prior art (WO2009/039895A1) to
provide sliding plates, which are arranged symmetrically and in an
L shape whose narrow side faces inward, on the sliding surfaces of
the dovetail-shaped section of the slide element. This symmetrical
and L-shaped arrangement is comparatively complex in design and
also requires a comparatively high assembly complexity on the slide
element, in order, in cooperation with the receptacle on the slide
element receptacle, to permit the presence of a small amount of
guidance play for high wear resistance and jam-free linear
movements.
[0003] The object of the invention, therefore, based on the prior
art described at the beginning, is to simplify the design of the
slide element in order to facilitate the assembly thereof. In
addition, the slide element should be able to ensure a high wear
resistance and a jam-free linear movement.
SUMMARY OF THE INVENTION
[0004] The invention attains the stated object in that the slide
element has a head rail, which is detachably fastened to the slide
element and, as part of the dovetail-shaped side of the slide
element, forms the second sliding surfaces on the dovetail-shaped
section, by means of which forces are transmitted during the return
stroke during which the slide element receptacle is moved away from
the drive element.
[0005] If the slide element has a head rail, which is detachably
fastened to the slide element, and, as part of the dovetail-shaped
side of the slide element, forms the second sliding surfaces on the
dovetail-shaped section, by means of which forces are transmitted
during the return stroke during which the slide element receptacle
is moved away from the drive element, then it is possible to
dispense with the symmetrical, L-shape arrangement of sliding
plates forming the dovetail shape. Specifically, the head rail
according to the invention can simultaneously provide the second
sliding surfaces, which are required to form the dovetail shape on
the slide element. It is thus possible not only to reduce the
assembly complexity of the slide element because instead of two
sliding plates having to be symmetrically aligned with a guide
element, a sufficient alternative can be found, but also, it is
thus possible to achieve a simply designed embodiment in order to
permit there to be a small amount of guidance play on the
dovetail-shaped guide device so as to achieve high wear resistance
and enable jam-free linear movements. According to the invention,
it is therefore possible, through the use of a head rail, to
achieve a slide element with a high degree of stability and good
guidance properties. If the head rail is detachably fastened to the
slide element, then the slide element can be made accessible for
maintenance in a comparatively easy-to-accomplish way.
[0006] The design in the region of the fastening of the head rail
to the slide element can be further simplified if the head rail is
fastened with its rail foot in an at least form-fitting fashion in
an in particular T-shaped groove in the slide element.
[0007] Maintenance on the wedge drive can be made even easier if
the sliding plates are detachably fastened to the slide
element.
[0008] Preferably, the slide element according to the invention can
be used in a wedge drive with a slide element receptacle and a
drive element. For this purpose, sliding surfaces can be
advantageously provided between the slide element and the drive
element; between the slide element and the slide element
receptacle, a dovetail-shape guide device is provided with sliding
surfaces on the slide element and sliding surfaces on the slide
element receptacle; the dovetail-shaped section of the slide
element engages in a correspondingly dovetail-shaped receptacle of
the slide element receptacle; and on the sliding surfaces of the
guide device on the slide element receptacle, respective sliding
plates are arranged symmetrically and embodied in an L shape with
the narrow side facing inward, forming the dovetail shape.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The subject of the invention is depicted in greater detail
by way of example in a cut-away side view of an embodiment variant.
In the drawings:
[0010] FIG. 1 shows a sectional view of a wedge drive 1 in the
transverse direction and
[0011] FIG. 2 is a three-dimensional view of the wedge drive
according to FIG. 1 in a partially cut-away depiction.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0012] FIGS. 1 and 2 show a wedge drive 1 with a slide element
receptacle 2, a slide element 3, and a drive element 5 that is
connected to the slide element 3.
[0013] The slide element 3 and the slide element receptacle 2 are
connected to each other in moving fashion by means of a
dovetail-shape guide device 6. For this purpose, the slide element
3 has a dovetail-shaped section 30, which is provided with a
plurality of sliding surfaces 31, 32, 33, 34 oriented at angles to
one another and forming the dovetail shape. Of these sliding
surfaces, the first sliding surfaces 32, 34, by means of which
forces are transmitted during the working stroke during which the
slide element 3 is moved outward between the drive element 5 and
the slide element receptacle 2, are arranged at an angle to each
other and in a roof shape relative to each other. On these first
sliding surfaces 32, 34 of the slide element 3, sliding plates 37,
39 are also provided and are detachably fastened or connected to
the slide element 3 by means of a screw connection that is not
shown. It is also conceivable to use other detachable fastening
means.
[0014] The other second sliding surfaces 31, 33 are embodied to be
smaller in area than the two first sliding surfaces 32 and 34. The
reason for this is that the forces on the first sliding surfaces
31, 33 during the working stroke during which the slide element 3
between the drive element 5 and the slide element receptacle 2 is
moved outward are greater than the forces on the second sliding
surfaces 32, 34, which are transmitted during the return stroke
during which the slide element receptacle 2 is moved away from the
drive element 5.
[0015] By contrast with the prior art, according to the invention,
no sliding plates are provided on the second sliding surfaces 31,
33; instead, these sliding surfaces are formed by a head rail 100,
which therefore simultaneously forms part of the dovetail-shaped
side 30 of the slide element 3. This not only reduces the design
complexity of the slide element 3, it also eliminates a significant
assembly complexity of the slide element 3 because it is not
necessary to symmetrically align any sliding plates or to arrange
them in an L shape whose narrow side faces inward, forming a
dovetail shape. In addition, by contrast with a plurality of
discontinuous sliding plates, a head rail 100 provides for a high
mechanical load-bearing capacity and thus increases the stability
of the slide element 3. Since in addition, the head rail 100 is
detachably fastened to the slide element 3, during maintenance
work, a possibly present guidance play can be compensated for in an
easy-to-accomplish way by replacing the head rail 100. This
detachable fastening or connection of the head rail 100 can be seen
in the figures in that the head rail 100 engages with its rail foot
101 in form-fitting fashion in a T-shaped groove 103 in the slide
element 3 and in that it has also been depicted pulled partway out
in FIG. 2. Specifically, this groove 103 is embodied in such a way
that the head rail 100 can be slid into this groove 103 and pulled
out from it again. Locking elements that are not shown in detail,
for example locking screws or other detachable fastening means, fix
the head rail 100 in position in the groove 103 in the slide
element 3, but have been omitted in FIG. 2 for the sake of
clarity.
[0016] In order to form the dovetail-shaped guide device 6, the
slide element receptacle 2 has a section 20 that is correspondingly
shaped in a diametrically opposite fashion, with detachably
fastened sliding plates 26, 27, which form sliding surfaces 21, 22,
23, 24 on the slide element receptacle 2. The sliding plates 26, 27
are arranged symmetrically and in an L shape with the narrow side
facing inward, forming the dovetail shape.
[0017] In addition, sliding surfaces 301, 302 are provided between
the slide element 3 and the drive element 5.
* * * * *