Internal or external cylindrical ultra-precision grinding machine for air static pressure metal parts

Abstract

The invention provides an internal or external cylindrical ultra-precision grinding machine for air static pressure metal parts, and relates to a precise machine tool. In the internal or external cylindrical ultra-precision grinding machine, a magnetic pole (1) is arranged at one end of a working spindle (33); the lower part of a spindle seat (29) and a turnplate seat (25) are movably connected and in rotary fit; an air static pressure spindle (6) of an air static pressure spindle mechanism is arranged between a grinding head gland (2) and a grinding head seat (9); the lower part of the grinding head seat (9) and the upper surface of a transverse mobile platform (3) are in sliding fit; the upper part of a grinding wheel truing and dressing mechanism is provided with a grinding wheel dresser (26); a workpiece shaft mechanism is arranged on the surface at one side of a bottom plate (18); the air static pressure spindle mechanism is arranged on the surface at the other side of the bottomplate (18); and the magnetic pole (1) of the workpiece shaft mechanism corresponds to an air floatation grinding head (38) of the air static pressure spindle mechanism. By utilizing reasonable arrangement of the workpiece shaft mechanism, the air static pressure spindle mechanism and the grinding wheel, the processing accuracy is effectively increased, and the high precision processing of the air static pressure spindle machine tool is realized.

Description

【Technical field】 [0001] The invention relates to a precision machine tool, in particular to an air static pressure grinder for ultra-precision grinding and grinding of the inner and outer circles and end faces of metal parts, especially to a precision bearing inner and outer groove and precision shaft sleeve Internal or external cylindrical ultra-precision grinding machine for pneumatic metal parts of internal and external circles and end faces. 【Background technique】 [0002] At present, ball bearing spindle machine tools are generally used for grinding and grinding of the inner and outer circles and end faces of precision metal parts in China. The bearings in the ball bearing spindle are high-precision P4-level angular contact bearings. Due to the high The accuracy of P4-level angular contact bearings is extremely high, so the precision standard of P4-level bearings is limited to 1 μm, and the comprehensive accuracy of the main shaft after manufacturing, processing and as...

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Problems solved by technology

[0005] At present, domestically produced processing equipment cannot reach the aforementioned precision, so bearings that meet the requirements of P4 can only be produced by importing high-precision processing equipment, which not only costs a lot of foreign exchange; Cutting-edge technology, such products are also classified as foreign products restricted from export to my country

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