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Grinding method

A grinding and creep-feed grinding technology, applied in the direction of grinding workpiece supports, grinding drives, grinding machine parts, etc., can solve problems such as thickness and thickness

Pending Publication Date: 2022-02-18
DISCO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the thickness of the portion with a large contact area is thicker than that of a portion with a small contact area with respect to the plate-shaped workpiece in contact with the grinding wheel.
[0005] Therefore, there is a problem of making the plate-shaped workpiece after grinding uniform in thickness with respect to a grinding device that holds a rectangular plate-shaped workpiece on a holding surface and grinds it with a grinding wheel.

Method used

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Embodiment Construction

[0024] 1 grinding device

[0025] figure 1 The shown grinding device 1 is a grinding device that grinds a workpiece 14 using a grinding unit 3 . The workpiece 14 is, for example, a rectangular parallelepiped thin plate. The grinding machine 1 has a base 10 extending in the Y-axis direction, and a column 11 standing on the +Y direction side on the base 10 .

[0026] A vertical movement unit 4 that supports the grinding unit 3 in a vertically movable manner is disposed on the side surface of the column 11 on the −Y direction side. The vertical movement unit 4 has: a ball screw 40 having a rotation axis 45 in the Z-axis direction; a pair of guide rails 41 arranged in parallel with the ball screw 40; a Z-axis motor 42 which rotates the ball screw 40 The axis 45 rotates as an axis; the lifting plate 43, the nut inside it is screwed with the ball screw 40, and the side of the lifting plate 43 is in sliding contact with the guide rail 41; and the holding seat 44 is connected with ...

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Abstract

Provided is a grinding method for grinding a workpiece to a uniform thickness. The following steps are performed: a cut-in grinding step for performing cut-in grinding on a workpiece (14) held by a holding surface by bringing a first grinding tool (310) close to the holding surface according to the horizontal positional relationship between the holding surface (211) and the first grinding tool such that the lower surface (312) of the first grinding tool (310) passes through the center (2000) of the upper surface (210) of a stage (21); and a slow feed grinding step in which a second grinding tool (320) is positioned further to the outside in the horizontal direction than above the holding surface and a lower surface (322) of the second grindstone is positioned at a position lower than an upper surface (140) of the workpiece by a predetermined distance, and the second grinding tool and the holding unit (2) are moved in a slow feed direction in which the second grinding tool and the holding unit (2) approach each other. The lower surface (322) and the side surface (323) of the second grinding tool are used for carrying out slow feed grinding on the processed object.

Description

technical field [0001] The present invention relates to grinding methods. Background technique [0002] As disclosed in Patent Document 1, the grinding device uses a grinding tool to grind a quadrangular plate-shaped workpiece held by a holding surface, and the grinding tool is ground in such a way that the ring-shaped grinding tool passes through the center of the plate-shaped workpiece. Position the grinding tool and rotate the grinding tool with the center of the grinding tool as the axis, and move the grinding tool to the direction close to the plate-shaped workpiece. Grinding workpieces. [0003] In the grinding process of a plate-shaped workpiece, the contact area of ​​the lower surface of the grinding wheel and the plate-shaped workpiece repeatedly increases and decreases repeatedly. In addition, a portion having a large contact area with the plate-shaped workpiece places a larger load on the plate-shaped workpiece and the grinding wheel than a portion having a smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B7/22B24B7/04B24B41/06B24B27/00B24B47/20B24B47/12
CPCB24B7/228B24B7/04B24B41/068B24B27/0076B24B47/20B24B47/12B24B47/10B24B41/06
Inventor 宫本弘树中野恵助
Owner DISCO CORP