JPH02131864A - Fitting jig for polishing work - Google Patents

Abstract

PURPOSE:To use the same dummy piece without changing it on each working until it is gone by wearing down by providing a thread feeding mechanism vertically moving this dummy piece fitting face in order to adjust the height according to the thickness of the body to be worked. CONSTITUTION:The body 6 to be worked of a glass, etc., is affixed to the lower face center part of a work affixing pan 5 in a fitting jig. Moreover, several dummy pieces 6a are affixed to the lower face part of a dummy piece fitting body 8. Then after facing the dummy piece 6a by polishing by a rotating polishing surface plate 2, this dummy piece 6a is lifted to the upper part of the body 6 to be worked by a thread feeding mechanism 9. The body 6 to be worked is abutted to the polishing surface plate 2 in this state, the dummy fitting body 8 is descended by the thread feeding mechanism 9 and the dummy piece 6a is abutted to the surface plate 6 face in the state of the body 6 to be worked slightly floating from the surface plate 2 face. Thereafter, polishing of the body 2 to be worked is started.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention relates to a polishing workpiece mounting jig used for polishing (lapping or polishing) a workpiece such as glass. It is.

(Conventional technology) Conventionally, a workpiece such as glass is pasted to the center of the lower surface of the workpiece attachment plate of the jig body, and a workpiece of the same type as the workpiece but slightly thicker than the workpiece is pasted to the periphery of the workpiece. A workpiece mounting jig for polishing is known in which a plurality of dummy pieces are attached to perform polishing, and the dummy pieces suppress rattling or deformation during the machining.

(Problems to be Solved by the Invention) In the conventional polishing workpiece mounting jig, a plurality of dummy pieces are attached to the attachment plate together with the workpiece, so once the polishing process is performed, the The dummy piece will wear down to the same thickness as the workpiece, so when a thicker workpiece is to be machined by replacing it with the polished workpiece, the dummy piece must be replaced. Since it was thinner than the thickness of the workpiece, it could not be used and had to be replaced with a new one that was slightly thicker than the workpiece.

An object of the present invention is to provide a polishing workpiece mounting jig that allows the height to be freely adjusted according to the thickness of the workpiece without replacing the dummy piece.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the polishing workpiece attachment jig of the present invention includes a workpiece attachment plate for attaching a workpiece such as glass. A dummy piece mounting body that can move up and down to which the dummy piece is attached to the main body, and a dummy piece that is attached to the mounting body can be freely adjusted in height according to the thickness of the workpiece. It is characterized by being provided with a screw feeding mechanism that moves up and down for adjustment.

(Function) The mounting jig attaches a workpiece such as glass to the center of the lower surface of the workpiece attachment plate, and attaches a plurality of dummy pieces to the lower surface of the dummy piece attachment body to perform polishing. The processing procedure is as follows: First, a dummy piece is polished on a rotating polishing plate to level it, and then raised to the upper part of the workpiece using a screw feed mechanism. Next, the workpiece is brought into contact with the polishing surface plate, and the dummy piece attachment body is lowered by a screw feed mechanism, and the workpiece is set in a state slightly floating above the surface of the surface plate, and the polishing process is performed.

(Embodiment) The structure of a polishing workpiece mounting jig according to an embodiment of the present invention will be explained below with reference to FIGS. This jig body 1 includes a circular base 4 made of stainless steel having a recess 3 with an opening on the bottom surface, and a disk-shaped workpiece fixed with adhesive to the bottom of the circular base 4. It consists of a plate 5. This workpiece attachment plate 5 is formed so that a plurality of workpieces 6 such as glass can be attached to the center part of the lower surface, and an opening is provided in the base recess 3 around the workpiece attachment part. A plurality of through holes 7, for example eight, are arranged concentrically and drilled at equal intervals.

Reference numeral 8 denotes a dummy piece attachment body fitted inside the jig main body 1 (inside the base recess 3) so as to be able to move up and down. It has a plurality of leg rods 8a projecting downward, and a dummy piece 6a of the same type as the workpiece 6 is attached to the lower end surface of each leg rod 8a. 9
is a screw feeding mechanism that moves the dummy piece mounting body 8 up and down so that the height of the dummy piece 6a can be freely adjusted according to the thickness of the workpiece 6, and this screw feeding mechanism 9 is connected to the center screw of the base 4. The male screw portion lO screwed into the hole 4a, the rotation operation portion 11 of the screw head, and the central rotation shaft bearing portion 8b of the dummy piece attachment body 8.
It is composed of a threaded member having a rotary engaging portion l2 that engages with the grinder, and a hook receiving portion l3 that can rotatably support the tip end ball portion of a polishing machine hook rod (not shown). Therefore, if this screw member is rotated by fitting a rotation jig such as a wrench into the rotation operation part 11, the dummy piece mounting body 8 is rotated by the screw feeding action.
moves up and down without rotating, and moves the dummy piece 6a to the workpiece 6.
The height can be adjusted freely according to the thickness.

The polishing workpiece mounting jig having the above structure has a workpiece 6 such as glass attached to the center of the lower surface of the workpiece attachment plate 5, and a plurality of dummy pieces 8a attached to the dummy piece attachment body. The dummy piece 6a is polished in the state shown in FIG. It is raised to the upper part of the workpiece 6 using the screw feed mechanism 9. Next, the workpiece 6 is brought into contact with the polishing surface plate 2, and the dummy piece attachment body 8 is lowered by the screw feed mechanism 9, so that the workpiece 6 is slightly lifted from the surface of the surface plate as shown in FIG. setting and polishing.

By processing in this way, there will be no wobbling or deformation during processing. Moreover, when processing a new workpiece again, it is now possible to simply adjust the height using the screw feed mechanism 9 without replacing the dummy piece 6a. Furthermore, a hook receiving portion l3 is provided on the screw head of the screw feeding mechanism 9.
Since this mounting jig is provided, pitch polishing can be performed with this mounting jig. Note that when the workpiece 6 is glass, if a glass with good flatness is used for the workpiece attachment plate 5, the glasses can be brought together by optical contact (water is poured between the glasses and the water is dried). Since it can be pasted using the technique of pasting glass together,
It is also possible to perform polishing with excellent parallelism (parallelism between the upper and lower surfaces of the workpiece).

〔Effect of the invention〕

According to the polishing workpiece mounting jig of this invention, the height of the dummy piece can be adjusted freely according to the thickness of the workpiece, so as long as the surface of the dummy piece is leveled for each process, the same dummy piece can be rubbed. It can be used as many times as it needs until it runs out, eliminating the conventional problem of replacing the dummy piece every time.

[Brief explanation of the drawing]

FIG. 1 is a central longitudinal cross-sectional view showing one embodiment of the polishing workpiece mounting jig of the present invention in a used state, and FIG. 2 is a bottom view of the same mounting jig as seen from below. DESCRIPTION OF SYMBOLS 1... Jig body, 2... Polishing surface plate, 4... Circular base, 4a... Screw hole, 5... Workpiece pasting plate, 6...
...Workpiece, 8a...Dummy piece, 7...Dish through hole, 8...Dummy piece attachment body, 8a...Leg rod, 9...
Screw feed mechanism, lO...male screw part, 11...rotation operation part, l2...rotation engagement part. Applicant's agent Patent attorney Takehiko Suzue Figure 2

Claims (1)

[Claims] A polishing process in which a workpiece is attached to the center of the lower surface of the workpiece attachment plate of the jig body, and multiple dummy pieces of the same type as the workpiece are placed around it to perform polishing. In the object mounting jig, there is a dummy piece mounting body that can move up and down to which the dummy piece is attached to the jig main body, and a dummy piece attached to the mounting body that is attached to the dummy piece to which the dummy piece is attached. A polishing workpiece mounting jig characterized by being equipped with a screw feed mechanism that moves up and down so that the height can be freely adjusted according to the height.