Miniature ceramic bearing hole abrading machine

A technology of ceramic bearings and grinding machines, which is applied in the direction of machine tools, grinding machines, grinding/polishing equipment designed for grinding the rotating surface of workpieces, etc. It can solve the problems that the accuracy cannot meet the requirements, so as to improve the grinding efficiency, improve the working environment, The effect of improving the grinding efficiency

Inactive Publication Date: 2008-08-27
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For many high-end digital products and optoelectronic microelectronic products, such accuracy cannot meet the requirements

Method used

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  • Miniature ceramic bearing hole abrading machine
  • Miniature ceramic bearing hole abrading machine
  • Miniature ceramic bearing hole abrading machine

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Embodiment Construction

[0027] The present invention is further described through the following drawings, so that the purpose, features and advantages of the present invention can be further understood.

[0028] The accompanying drawings are explained as follows:

[0029] figure 1 It characterizes the relative positional relationship and relative motion relationship between the workpiece 2 (ceramic bearing), the fixture (centering clamping mechanism) and the processing tool (grinding wire rope 22): the centering axis of the workpiece 2, the centering clamping mechanism The axis of the grinding wire coincides with the axis of the grinding wire rope; the grinding wire rope 22 runs through the inner hole of the workpiece 2 to be ground, and the two ends are tensioned and fixed. Rotating and reciprocating, the elasticity of the grinding wire rope 22 in the circumferential direction keeps it in contact with and rubbing against the inner hole wall of the workpiece 2, and the grinding paste applied on the ...

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Abstract

The invention discloses an inner-hole grinding machine with micro-ceramic bearing. A centering sleeve (3), which has an external surface with a taper and a shrinkable inner-hole diameter, is arranged in a rotary shaft(4) with an internal cone. A workpiece (2) can be mounted in the inner hole of the centering sleeve. A clamping device which clamps the centering sleeve (3) and the workpiece in the rotary shaft (4) is arranged on the two ends of the rotary shaft. An grinding steel wire rope (22) axially passes through the centering sleeve (3) and the inner hole of the workpiece (2), and the two ends of the grinding steel wire rope are fixed on a tension and clamping mechanism (29). The rotary shaft (4) is arranged on a rotary support which allows the rotary shaft to rotate around the axis line of the rotary shaft under high speed. The rotary support is arranged on a linear supporting seat which allows the rotary support to move back and forth along the axial line of the rotary shaft. The relative friction motion combined by reciprocating and rotating is produced between the wall of the inner hole of the workpiece and the convex site of the grinding steel wire rope, so the grinding of the inner hole of the ceramic bearing is achieved. Through controlling the parameters such as grinding time, tension force of grinding steel wire rope, the grinding machine can ensure that the grinding precision of the inner hole of the ceramics bearing is increased by one order of magnitude as compared with traditional grinding, and the efficiency is increased by 10 times.

Description

technical field [0001] The invention relates to a grinding device for miniature parts, in particular to a grinding device for the inner hole of a miniature ceramic bearing. Background technique [0002] Miniature ceramic bearings are widely used in the IT industry, optoelectronics, and microelectronics industries. For example, the cooling fan bearings in computers are ceramic bearings. In order to improve product performance, the grinding accuracy of ceramic bearings must be improved. At present, the traditional grinding method for grinding the ring hole of the miniature ceramic bearing with a diameter of φ0.1-5mm is to use a motor to drive a grinding needle to rotate, manually press the ceramic bearing ring and push it back and forth, so as to realize the grinding process of the inner hole; The disadvantage of this method is the lack of centering reference and uneven manual force, which cannot guarantee the dimensional accuracy, shape accuracy (including roundness and cylin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B5/48B24B5/06
Inventor 李新和徐觉斌
Owner CENT SOUTH UNIV
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