JP3782901B2 - Tooling method for lapping machine correction device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tool centering method for a lapping machine correcting device.
[0002]
[Prior art]
Conventionally, the rotary table of a lapping machine has a flat surface, a center concave surface, a center convex surface, etc., which are straight, and the surface shape is processed by inclining the turret guide surface having the straightness of the lap correction device. .
[0003]
[Problems to be solved by the invention]
However, recently, the table surface is required to be processed into a concave and convex surface with a large curvature, and the X-axis (horizontal direction) and Z-axis (vertical direction) are controlled simultaneously by two axes. The accuracy of sphericity is required, and in order to machine a sphere by controlling the X and Z axes, the coordinate position of the center of the rotary table and the cutting edge must be 10 μm or less.
[0004]
The cutting edge position of the cutting tool changes each time the cutting tool is replaced. As shown in FIG. 2, the rotary table 1 of the lapping machine is provided with a relief hole 2 in the central portion, and machining of this portion is unnecessary. X-axis stroke is shortened.
For this reason, the coordinate position of the center of the rotary table and the cutting edge of the cutting tool cannot be accurately known.
[0005]
An object of the present invention is to provide a method for centering a cutting tool of a lapping machine correcting device by eliminating the drawback that the center of the rotary table and the coordinate position of the cutting tool edge cannot be accurately known. . .
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a tool centering method of a lapping machine correcting device for correcting a rotary table of a lapping machine having a clearance hole in the center, and a step comprising a small diameter part and a large diameter part when centering. After fitting the small-diameter portion of the plate-like member into the central relief hole, rotating the lapping machine rotary table, and machining the diameter Aφ by cutting a small amount on the upper surface of the large-diameter portion with the tool of the lapping machine correction device The tool centering method of the lapping machine correction device that knows the table rotation center and the position of the tool was adopted.
[0007]
The diameter Aφ is preferably measured with a microscope.
[0008]
According to this method, it is possible to accurately know the coordinate position of the center of the rotary table and the cutting edge.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
Reference numeral 10 denotes a rotary table of a lapping machine, and a relief hole 11 is provided in the center. A small diameter portion 12 of a plate-like member 14 having a stepped portion made up of a small diameter portion 12 and a large diameter portion 13 is fitted in the escape hole 11. Therefore, at the time of centering, the rotary table 10 is rotated, and the diameter Aφ by a small amount of cut is processed into the upper surface B from the upper portion of the plate-like member 13 with the cutting tool 15 of the correcting device. Thereafter, the diameter Aφ can be measured with a microscope or the like with an accuracy of 10 μm or less.
[0010]
【The invention's effect】
Since it is configured as described above, the disadvantage that the center of the rotary table and the coordinate position of the cutting tool edge that were originally raised could not be accurately known has been removed, and the center of the rotary table can be determined with an accuracy of 10 μm or less. You can know the coordinate position of the cutting edge.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a tool centering method of a lapping machine correcting device according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a rotary table of a conventional lapping machine.
[Explanation of symbols]
10 rotary table 11 relief hole diameter part 12 small diameter part 1 large diameter part 2 plate-like member 3 bite

Claims (2)

In the centering method of the tool of the lapping machine correction device that processes the upper surface of the rotary table of the lapping machine with a clearance hole in the center and corrects it to a predetermined flat surface or curved surface, there is a step consisting of a small diameter part and a large diameter part when centering. While the small-diameter portion of the plate-like member was fitted in the central relief hole, the lapping machine rotary table was rotated, and the diameter Aφ by machining a small amount of cut was processed on the upper surface of the large-diameter portion by the tool of the lapping machine correcting device. Thereafter, a tool centering method of a lapping machine correcting device that measures the same diameter Aφ and knows the table rotation center and the position of the tool with respect to the table center based on the measured value. 2. The tool centering method for a lapping machine correcting device according to claim 1, wherein the diameter Aφ is measured with a microscope.

Images