JPH07237117A - Inclination lapping processing method - Google Patents

Abstract

PURPOSE:To provide stable finish and high precision and at the same time realize mass production by conducting the processing of a work with the vertical posture of a spindle that clamps the work, kept intact by inclining the lapping surface of a surface plate and conducting the processing of the work on this inclined surface. CONSTITUTION:In the case of a lapping device, formation is carried out by inclining the lapping surface 2 of its surface plate 1. As a result, the processing of a work 3, for example, a pressor ring or the like for pressing-out processing in the case of a super precision canning tool is conducted on an inclined surface 4. In this instance, the angle of the inclined surface 4 of the work 3 is formed within the range of 8/40000-0/20000. As a result, processing can be conducted with the vertical posture of the spindle 3a of the work 3 kept intact without inclining it, so high precision processing is possible without requiring skill. Also, works 3 enough for several can be processed at the same time only by fitting works 3 to respective spindles 3a, so mass production can be realized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slant lapping process for machining a minute slanted surface which is slanted at a gradient of about several micrometers per several centimeters of a work such as a pressing ring for drawing in an ultra-precision can manufacturing tool. Regarding the method.

[0002]

2. Description of the Related Art In a pressing ring used for drawing an ultra-precision can, it is necessary to incline the pressing surface with a gradient of several micrometers per centimeter. However, hitherto, a pressing ring having a minutely inclined surface, that is, a work has been processed by inclining the spindle of the work in a lapping machine and abutting it on a flat polishing surface of a surface plate as shown in JP-A-61-274873. .

[0003]

However, the inclination of the spindle in the lapping machine is troublesome and mass production is not possible. In the present invention, the work spindle is kept vertical and the polishing surface of the surface plate is inclined for processing.

[0004]

In order to solve the above problems, the present invention is characterized in that a polishing surface 2 of a surface plate 1 is inclined to machine a work 3 into an inclined surface 4, and the work 3 is The angle of the inclined surface 4 is 1.8 / 40000 to 2.0 / 200.
00.

[0005]

[Operation] Spindle 3 of work 3 in lapping machine
A is not tilted and is machined vertically.

[0006]

EXAMPLE As shown in FIG. 1, a lapping device (lap machine,
A flat surface, a spherical rotary grinding machine, a filing writing machine, a bolishing machine, etc.) is used to incline the polishing surface 2 of the surface plate 1 to process the work 3 into the inclined surface 4. As shown in FIG. 2, the angle of the inclined surface 4 of the work 3 is 1.8 /
It is 40,000-2.0 / 20,000. 3 and 4 are a cross-sectional view of the surface plate 1 used in the present invention before correction and a cross-sectional view of the surface plate 1 after correction, respectively.
The polishing surface 2 is ground by the rotating normal correction ring 5 with the powder of the grindstone 6 interposed therebetween, but the polishing surface 2 is usually ground flat. However, in the case of the present invention, the polishing surface 2 of the surface plate 1 is machined to a low level as shown in FIG. The polishing surface 4 of the work 3 is processed as shown in FIG. 1 using the surface plate 1 processed in this way. This medium and low amount d has a diameter of 6
0.05 to 0.06 mm at the center on a 00 mm surface plate
Is.

In this way, the inclination of the polishing surface 2 of the work 3 of several microns per several centimeters can be freely set by the medium-low amount d of the surface plate 1, and the surface roughness is 0.4S or less, and the mirror surface is obtained. Since there are no scratches on the product and the processing is stable, it is possible to prepare the required number of products with the same size and accuracy. Further, in the lapping machine, since the spindle 3a of the work 3 can be machined vertically without being tilted, anyone can machine it without the help of a skilled worker, and in a lapping machine having a plurality of spindles, the work 3 can be machined. It is possible to machine several work pieces 3 at a time by simply attaching them to each spindle 3a. That is, the spindle 3a of the work 3 is vertical and a plurality of work pieces 3 can be formed to mass-produce the work.

[0008]

As described above, according to the present invention, the surface plate 1 of the lapping device is tilted into a medium-low shape by using the correction ring 5, and the work surface is formed by the inclined polishing surface 2 of the surface plate 1. As for processing, stable finish and accuracy can be obtained, and mass production is possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a work and a surface plate to be processed by the method of the present invention.

FIG. 2 is a cross-sectional view of the work after the processing.

FIG. 3 is a cross-sectional view of a surface plate used in the present invention before correction.

FIG. 4 is a sectional view of a state after the figure is corrected.

[Explanation of symbols]

 1 surface plate 2 polishing surface 3 work 3a spindle 4 inclined surface 5 correction ring 6 grindstone

Claims (2)

[Claims] 1. An inclined lapping method, wherein a polishing surface of a surface plate is inclined to process a work into an inclined surface. 2. The angle of the inclined surface of the work is 1.8 / 4.
The inclined lapping method according to claim 1, which is 0000 to 2.0 / 20000.