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Full-cooling type gas static pressure main shaft

A gas static pressure and cooling technology, applied in metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problems of limited heat dissipation, unstable performance, and decreased processing accuracy, so as to achieve good control and increase stability , the effect of improving the accuracy

Pending Publication Date: 2022-06-07
北京海普瑞森超精密技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited heat dissipation effect, the temperature of the gas static pressure spindle will be too high, which will cause its performance to be unstable and the processing accuracy to decrease.

Method used

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  • Full-cooling type gas static pressure main shaft
  • Full-cooling type gas static pressure main shaft
  • Full-cooling type gas static pressure main shaft

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] The following embodiments are intended to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] as Figure 1-Figure 4 As shown, the present invention fully cooled gas hydrostatic spindle comprises a spindle body 6, the external part of the spindle body 6 is provided with a spindle sleeve 8, the front surface of the spindle body 6 is equipped with a suction cup 1, the rear of the spindle body 6 is equipped with a spindle motor.

[0029] Between the spindle body 6 and the spindle sleeve 8 is provided graphite long bushing 7, the length of the graphite major bushing 7 is slightly shorter than the spindle sleeve 8. Graphite long shaft sleeve 7 is provided with a circular groove on the outer ring, and the annular groove is located at the front and rear of the graphite long shaft sleeve 7, respectively. The multi-channel annular groove forms a gas path channel, and the gap between the graphite long shaft sleeve 7 and the spind...

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Abstract

The invention discloses a full-cooling type gas static pressure main shaft and relates to a rotating main shaft used in the machining process of a machine tool. The invention aims to provide the full-cooling type gas static pressure main shaft which is high in rotating precision, high in rigidity, particularly good in stability performance and good in thermal expansion performance. The full-cooling type gas static pressure main shaft comprises a main shaft body, a main shaft sleeve and a motor, the main shaft sleeve is arranged outside the main shaft body and connected with the motor, the motor drives the main shaft body to rotate, a plurality of cooling holes are formed in the periphery of the interior of the main shaft sleeve, and a plurality of grooves are designed in the front end face and the rear end face of the main shaft sleeve respectively. The grooves of the front end face and the rear end face are arranged in a staggered mode, each groove is communicated with two adjacent cooling holes, a series cooling channel is formed in the main shaft sleeve, a water inlet and a water outlet are formed in the motor, and the water inlet and the water outlet are communicated with the cooling channel in the main shaft sleeve.

Description

Technical field [0001] The present invention relates to the technical field of the processing machine tool, in particular to a fully cooled gas hydrostatic spindle. Background [0002] Because of its advantages of high precision, high speed, near frictionlessness and pollution, the gas hydrostatic spindle is widely used in the precision and ultra-precision CNC machine tool industry. The precision of the machine tool spindle directly affects the machining accuracy of the workpiece, so the gas hydrostatic spindle is the core component of a variety of precision CNC machine tools to ensure machining accuracy. The processing of microstructure puts forward very high requirements for precision machine tools, especially spindle components, not only with high rotational accuracy, but also with high stiffness, good stability, good thermal expansion performance and so on. [0003] After the existing gas hydrostatic spindle is operated for a period of time, the temperature of the shaft body ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B19/02
CPCB23Q1/70Y02P70/10
Inventor 武艳霞荣德志赵建强李金明
Owner 北京海普瑞森超精密技术有限公司
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