JPS61209842A - Machining jig - Google Patents

Abstract

PURPOSE:To improve the quality of a workpiece in carrying out the abrasive cut-off of a tall ferrite or the like by forming an inclined plane on the one side of the inserting hole of a machining jig and bringing a wedge spacer with an inclined plane having the same inclination as that of the machining jig into contact with the side of the workpiece. CONSTITUTION:The inserting hole 6 provided in a abrasive jig 7 has a dimension 1, slighty larger than the dimension 1 of a workpiece 8, and an inclined plane 9 is formed on its one side. A wedge spacer 10 with an inclined plane having the same inclination as that of the grinding jig 7 is put between the inclined plane 9 and the workpiece 8. The jig 7 being a magnetic substance and the spacer 10 are attracted toward a surface plate 11 by its electromagnetically inductive action to fix the workpiece 8. Consequently, the abrasive cut-off of a tall workpiece such as the ceramics of ferrite or the like can be performed without adhesive bonding, and the occurrence of the dimensional dispersion of the workpiece can be prevented in case of superprecision machining.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is suitable for application to a grinding jig for grinding a tall workpiece without bonding, and prevents the workpiece from moving during machining, thereby improving the surface of the machined surface. This relates to a processing jig that does not cause surface wobbling, uneven contact, etc.

Conventionally, when polishing and cutting tall workpieces such as ceramics such as ferrite, the workpiece is bonded to a substrate (surface plate) with a thermosetting resin or the like to prevent it from tipping over. However, when ultra-precision processing is performed, the thickness of the resin layer is not uniform, so variations in the dimensional accuracy of the finished product cannot be denied.

Furthermore, when the workpiece 3 is inserted into the insertion hole 2 of the polishing jig 1 as shown in FIG. 1 as shown in FIG.
Since there is a gap 4 between the hole 2 and the workpiece 3, if the polishing is performed as is, the workpiece 3 will move within the hole 2 during machining, resulting in so-called surface sag, uneven contact, etc. This is a drawback that causes a large number of defective products to be produced.

In order to solve these problems, the main purpose of the present invention is to propose a processing jig that can support the workpiece so that it does not move during processing, eliminate the above causes, and improve quality. shall be.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 3 is a sectional view showing an example of the present invention. Reference numeral 6 indicates an insertion hole drilled in the polishing jig 7, and the insertion hole 6 has a dimension Q slightly larger than the dimension Q of the workpiece 8.

Moreover, an inclined surface 9 is formed on one side of the hole 6. The inclined surface 9 is formed to be wide on the upper side and narrow on the lower side. A wedge-shaped spacer 10 having the same slope as the slope 9 is configured to contact the slope 9 and the side surface of the workpiece 8 .

Therefore, due to the electromagnetic induction effect of the surface plate 11, the jig 7 and the spacer 10, which are magnetic materials, are attracted to the surface plate 11 side.
is fixed by the jig 7 and the spacer 10. Incidentally, the distance between the dimensions Q and -Q is provided so that the workpiece 8 can be easily removed after processing.

FIG. 4 is a perspective view showing an example of a pond according to the present invention.

In this example, a convex dovetail groove 13 is formed on the slope 9 on one side of the hole 6, and a concave dovetail groove 15 is formed on the slope 14 of the spacer 12, which has the same slope as the slope 9. , the workpiece 8 is held down by the engagement of both dovetail grooves 13 and 15.

Furthermore, by setting the inclination angle α with the plane to be larger than 45°, the jig 7 and the spacer 10 can be pressed toward the surface plate 11 without using the electromagnetic induction of the surface plate 11. At this time, the component force applied to the workpiece 8 becomes smaller, but there is an effect that the workpiece 8 does not easily move even if lateral grinding pressure is generated.

As described above, according to the present invention, an inclined surface is formed on one side of the insertion hole drilled in the processing jig, and a wedge-shaped spacer having the same inclined surface as the inclined surface is in contact with the inclined surface to be processed. Since it is configured so that it comes into contact with the side of the object, it is possible to prevent it from falling over when polishing or cutting tall workpieces, such as ceramics such as ferrite. There is no need to bond with resin or the like. Therefore, even when performing precision machining, there is an effect that variations in dimensional accuracy will not occur.

Furthermore, according to conventional polishing processing, the workpiece moves within the support hole during processing, resulting in many defective products due to so-called surface wobbling and uneven contact, etc., but according to the present invention, , such causes can be eliminated.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of a jig, Fig. 2 is a sectional view showing an example of a conventional processing method, Fig. 3 is a sectional view showing an example of the present invention, and Fig. 4 is a plan view showing an example of a jig. It is a perspective view showing an example. 6... Insertion hole, 7... Polishing jig, 8... Workpiece, 9... Inclined surface, 10... Spacer. Applicant's agent Patent attorney Akiyama Senior 12
Figure 2

Claims (1)

[Claims] An inclined surface is formed on one side of the insertion hole drilled in the processing jig, and a wedge-shaped spacer having the same inclined surface as the inclined surface is in contact with the inclined surface and the side surface of the workpiece. A processing jig featuring: