U.S. patent application number 12/738472 was filed with the patent office on 2010-10-21 for system for connecting a disc to a disc holder, as well as a disc for such system.
This patent application is currently assigned to KGS DIAMOND HOLDING B.V.. Invention is credited to Bob Burgess, Sandro Giovanni Giuseppe Ferronato, Erik Mulder.
Application Number | 20100267319 12/738472 |
Document ID | / |
Family ID | 38695491 |
Filed Date | 2010-10-21 |
United States Patent
Application |
20100267319 |
Kind Code |
A1 |
Ferronato; Sandro Giovanni Giuseppe
; et al. |
October 21, 2010 |
SYSTEM FOR CONNECTING A DISC TO A DISC HOLDER, AS WELL AS A DISC
FOR SUCH SYSTEM
Abstract
A system for connecting a disc to a disc holder, e.g. for
grinding or polishing purposes, has a disc with an operating
surface, an opposite connection surface and a protrusion which is
mounted to the connection surface. The disc holder has a supporting
surface for supporting the connection surface of the disc and a
socket in the supporting surface of the disc holder for receiving
the protrusion. The connection surface of the disc and the
supporting surface of the disc holder are provided with a fixation
element distributed over the surfaces outside the protrusion and
the socket respectively.
Inventors: |
Ferronato; Sandro Giovanni
Giuseppe; (Elburg, NL) ; Burgess; Bob;
(Elburg, NL) ; Mulder; Erik; (Elburg, NL) |
Correspondence
Address: |
YOUNG & THOMPSON
209 Madison Street, Suite 500
Alexandria
VA
22314
US
|
Assignee: |
KGS DIAMOND HOLDING B.V.
Elburg
NL
|
Family ID: |
38695491 |
Appl. No.: |
12/738472 |
Filed: |
October 16, 2007 |
PCT Filed: |
October 16, 2007 |
PCT NO: |
PCT/NL2007/050499 |
371 Date: |
June 25, 2010 |
Current U.S.
Class: |
451/548 ;
451/360 |
Current CPC
Class: |
B24D 9/085 20130101;
B24D 13/18 20130101 |
Class at
Publication: |
451/548 ;
451/360 |
International
Class: |
B24D 7/16 20060101
B24D007/16 |
Claims
1. System for connecting a disc (1) to a disc holder (2), e.g. for
grinding or polishing purposes, said disc (1) having an operating
surface (3), an opposite connection surface (4) and a protrusion
(6) which is mounted to said connection surface (4), said disc
holder (2) having a supporting surface (5) for supporting the
connection surface (4) of the disc (1) and a socket (7) in the
supporting surface (5) of the disc holder (2) for receiving said
protrusion (6), characterised in that the connection surface (4) of
the disc (1) and the supporting surface (5) of the disc holder (2)
are provided with fixation means (8, 9) which are distributed over
the said surfaces (4, 5) outside the protrusion (6) and the socket
(7) respectively.
2. System according to claim 1, wherein the protrusion (6) has a
solid external shape, and the socket (7) has a free internal space
the shape of which corresponds to the shape of the protrusion
(6).
3. System according to claim 2, wherein the external shape of the
protrusion (6) and the internal shape of the socket (7) are
symmetrically in circumferential direction.
4. System according to claim 1, wherein the fixation means (8, 9)
on the connection surface (4) of the disc (1) and on the supporting
surface (5) of the disc holder (2) comprise Velcro-Type.RTM. or
other hook & loop connection means (17, 10), adhesive
connection means and/or magnetic connection means.
5. System according to claim 1, wherein the disc (1) comprises a
laminated structure.
6. System according to claim 5, wherein the disc (1) comprises a
metallic layer (14), one side of which metallic layer (14) being
provided with a grinding layer (15) or polishing layer and the
other side being provided with the protrusion (6).
7. System according to claim 1, wherein a throughgoing hole has
been provided extending through the disc, the disc holder being
provided with a corresponding and coaxial feed channel for feeding
a liquid to the operating surface of the disc.
8. System according to claim 1, wherein the protrusion and the
socket have corresponding cylindrical shapes.
9. System according to claim 1, wherein the protrusion (6) and the
socket (7) have corresponding conical shapes.
10. Disc (1) for use in the system according to claim 1, said disc
(1) having an operating surface (3), an opposite connection surface
(4), a protrusion (6) which is mounted to the connection surface
(4) of the disc (1) as well as fixation means (8) distributed over
said connection surface (4) outside said protrusion (6).
11. System according to claim 2, wherein the fixation means (8, 9)
on the connection surface (4) of the disc (1) and on the supporting
surface (5) of the disc holder (2) comprise Velcro-Type.RTM. or
other hook & loop connection means (17, 10), adhesive
connection means and/or magnetic connection means.
12. System according to claim 3, wherein the fixation means (8, 9)
on the connection surface (4) of the disc (1) and on the supporting
surface (5) of the disc holder (2) comprise Velcro-Type.RTM. or
other hook & loop connection means (17, 10), adhesive
connection means and/or magnetic connection means.
13. System according to claim 2, wherein the disc (1) comprises a
laminated structure.
14. System according to claim 3, wherein the disc (1) comprises a
laminated structure.
15. System according to claim 4, wherein the disc (1) comprises a
laminated structure.
16. System according to claim 2, wherein a throughgoing hole has
been provided extending through the disc, the disc holder being
provided with a corresponding and coaxial feed channel for feeding
a liquid to the operating surface of the disc.
17. System according to claim 3, wherein a throughgoing hole has
been provided extending through the disc, the disc holder being
provided with a corresponding and coaxial feed channel for feeding
a liquid to the operating surface of the disc.
18. System according to claim 4, wherein a throughgoing hole has
been provided extending through the disc, the disc holder being
provided with a corresponding and coaxial feed channel for feeding
a liquid to the operating surface of the disc.
19. System according to claim 5, wherein a throughgoing hole has
been provided extending through the disc, the disc holder being
provided with a corresponding and coaxial feed channel for feeding
a liquid to the operating surface of the disc.
20. System according to claim 6, wherein a throughgoing hole has
been provided extending through the disc, the disc holder being
provided with a corresponding and coaxial feed channel for feeding
a liquid to the operating surface of the disc.
Description
[0001] The invention is related to a system for connecting a disc
to a disc holder, e.g. for grinding or polishing purposes, said
disc having an operating surface, an opposite connection surface
and a protrusion which is mounted to said connection surface, said
disc holder having a supporting surface for supporting the
connection surface of the disc and a socket in the supporting
surface of the disc holder for receiving said protrusion.
[0002] Such a connection system is disclosed in the British patent
1185370. According to said patent, the disc is provided with a
hollow stud. The disc holder comprises a socket having an internal
space into which a shaft extends. The hollow stud has been provided
with internal fixation means, which are to be brought to in
cooperation with external fixation means on the shaft. The
connection surface and the supporting surface are freely positioned
next to each other.
[0003] Although by means of this prior art connection system, a
connection can be obtained between the disc and the disc holder,
nevertheless problems may arise which are related to the
replacement procedure. It should be borne in mind that the only
reliable connection between the disc and the disc holder with
respect to forces which try to remove the disc, is constituted by
the stud/socket and the associated internal/external fixation
means. Thus, although the prior art system aims at an easy
replacement, still care should be taken that said fixation means
are brought together in a reliable fashion. Thus, inevitably time
is lost each time the disc has to be replaced, as a consequence of
the careful handling which should be applied.
[0004] The aim of the invention is therefore to provide a system of
the type described before which allows for a more rapid and easy
replacement of the disc. This object is achieved in that the
connection surface of the disc and the supporting surface of the
disc holder are provided with fixation means which are distributed
over the said surfaces outside the protrusion and the socket
respectively.
[0005] The fixation means of which and distributed over the
surfaces, can be carried out in several ways. According to a first
possibility, the fixation means on the connection surface of the
disc and on the supporting surface of the disc holder are
Velcro-Type.RTM., or hook & loop connection means. However,
also fixation means of other types such adhesives or magnetic
fixation means are possible.
[0006] As addressed before, the stud which is present on the prior
art disc is hollow and comprises internal fixation means which are
located in the hollow part of the stud. Conversely, the socket is
occupied by a shaft, provided with external fixation means. This
leads to a somewhat cumbersome process of assembling the disc and
the disc holder, having regard to the fact that not only the stud
has to be accommodated in the socket, but additionally also the
shaft into the hollow part of the socket. Finally, the internal and
external fixation means of the studs and the shaft have to be
brought in the right orientation so as to enable the process of
assembling these components.
[0007] The invention now enables a more simple and rapid process of
assembling the disc and the disc holder in an embodiment wherein
the protrusion has a solid or closed external shape, and the socket
has a free internal space the shape of which corresponds to the
solid shape of the protrusion. According to the invention
therefore, the stud and the socket can be assembled by simply
moving these components towards and into each other, and to align
them. No other precaution, such as a proper orientation in the
circumferential direction is necessary in case furthermore the
external shape of the protrusion and the internal shape of the
socket are symmetrically in circumferential direction. After the
stud and socket have been accommodated within each other, the
fixation means are directly activated.
[0008] The disc may furthermore be carried out in several ways;
preferably, the disc comprises a laminated structure. In
particular, the disc may comprise a metallic layer, one side of
which metallic layer being provided with a grinding layer or
polishing layer and the other side being provided with the
protrusion. Furthermore, a throughgoing hole may be provided
extending through the disc, the disc holder being provided with a
corresponding and coaxial feed channel for feeding a liquid to the
operating surface of the disc.
[0009] The invention is furthermore related to a disc for use in
the system as described before, said disc having an operating
surface, an opposite connection surface, a protrusion which is
mounted to the connection surface of the disc as well as fixation
means distributed over said connection surface outside said
protrusion.
[0010] The attention is furthermore drawn to a further prior art
system which comprises a disc having a central hole, as well have
has a disc holder which has a correspondingly shaped protrusion.
Upon assembling the disc and the disc holder, care should be taken
to make the protrusion of the disc holder engage the hole in the
disc. At their facing surfaces, the disc and the disc holder had
been provided with the Velcro-Type.RTM. connection means. However,
the disadvantage of such a system is related to the fact that the
protrusion of the disc holder may disturb the grinding or polishing
process. In particular in case the disc wears down, this protrusion
may project with respect to the grinding or polishing surface of
the disc, which leads to smearing of the treated object. In order
to circumvent this problem, it is attempted to make the protrusion
project in a very limited way with respect to the disc holder
supporting surface. This in turn however leads to the problem that
the stabilising effect of such protrusion becomes very limited,
which may lead to a dislocation of the disc with respect to the
disc holder.
[0011] The invention will now be described with reference to an
embodiment of the system according to the invention as shown in the
drawings.
[0012] FIG. 1 shows the disc and disc holder in perspective and in
disassembled state.
[0013] FIG. 2 shows the disc and disc holder in cross-section, in
disassembled state.
[0014] FIG. 3 shows the disc and is calling cross-section, in
assembled state.
[0015] In the FIGS. 1 and 2, a disc 1 and the disc holder 2 have
been shown in disassembled state. The disc has an operating surface
3 which in the usual way is provided with an abrasive material such
as diamond-like particles et cetera. As these materials are known
per se, they are not described in more detail. It is to be noted
that the materials in question can be suitable for many different
purposes, such as a grinding, polishing etc.
[0016] Opposite the operating surface 3, the disc 1 has a
connection surface 4 which is to abut against the disc holder 2, in
particular the supporting surface 5 thereof. The operating surface
3 of the disc 1 has been provided with a truncated stud 6.
Similarly, the supporting surface 5 of the disc holder 2 has been
provided with a correspondingly shaped socket 7. Furthermore, both
the connection surface 4 of the disc 1 and the supporting surface 5
of the disc holder 2 have been provided with Velcro-Type.RTM.
connection means 8, 9. As is well-known in the art, these are
Velcro-Type.RTM., or other hook & loop connection means are
hook sided respectively loop sided so as to obtain a firm
connection upon pressing the connecting surface 4 and the
supporting surface 5 onto each other.
[0017] The disc holder 2 thus comprises a Velcro.RTM. layer 10
firmly connected to a base member 11. Said base member 11 has been
provided with the socket 7, whereas the Velcro/Loop.RTM. layer 10
has been provided with an aperture 12 which is in alignment with
said socket 7. Furthermore, the base member in 11 has been provided
with the shaft 13 for connection to a rotating tool.
[0018] The disc 1 has a laminated structure as well, which i.a.
encompasses a metallic layer 14. The operating surface 3 is formed
by an operating layer 15, which e.g. comprises diamond-like
particles. The opposite side of the disc 1, that is the connection
surface 4, is formed by a Velcro.RTM. layer 17 as well. It will be
clear that one of these is Velcro.RTM. layers 10, 17 is hook sided,
whereas the other is loop sided.
[0019] Upon assembling the disc 1 and the disc holder 2, the stud 6
and the socket 7 are simply aligned and engaged into each other. At
the final stages of this engagement, the Velcro.RTM. layers 10, 17
are contacting each other so as to establish a firm connection
between the disc 1 and the disc holder 2, as shown in FIG. 3.
* * * * *