Non-uniform distribution preload controllable high-speed spindle based on piezoelectric actuator and its control method

A piezoelectric actuator, non-uniform distribution technology, applied in rolling contact bearings, shafts, bearings, etc. Uniform distribution and other issues

Inactive Publication Date: 2011-12-14
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simply applying a uniformly distributed axial preload to the bearing cannot effectively eliminate the non-uniform distribution of axial and radial clearances, nor can it meet the requirements of non-uniform distribution of working loads of high-speed sp

Method used

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  • Non-uniform distribution preload controllable high-speed spindle based on piezoelectric actuator and its control method
  • Non-uniform distribution preload controllable high-speed spindle based on piezoelectric actuator and its control method
  • Non-uniform distribution preload controllable high-speed spindle based on piezoelectric actuator and its control method

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Example Embodiment

[0016] The following is a detailed introduction to the non-uniformly distributed pre-tightening force controllable high-speed spindle of the present invention based on the piezoelectric actuator and its control method in conjunction with the accompanying drawings:

[0017] See figure 1 As shown, the present invention is based on a piezoelectric actuator-based non-uniformly distributed pre-tightening force controllable high-speed spindle including a spindle 1, a bearing 2, a bearing support 3, a round nut 4, a sleeve 5, a pre-tightening ring 6, a temperature Sensor 7, piezoelectric actuator control line 8, piezoelectric actuator 9, conditioning circuit 10, A / D converter 11, single-chip microcomputer 12, D / A converter 13, multiplexer 14, power amplifier circuit 15, Power 16. Wherein, the pre-tensioning ring 6, temperature sensor 7, piezoelectric actuator control line 8, piezoelectric actuator 9, conditioning circuit 10, A / D converter 11, single chip microcomputer 12, D / A converter ...

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Abstract

A non-uniform-distribution pretightening-force-controllable high-speed main shaft based on a piezoelectric actuator and a control method thereof. A bearing (2) is mounted on the periphery of a main shaft (1), the bearing (2) is fixed through a bearing support (3), and a temperature sensor (7) is mounted on the bearing support (3). A pretightening ferrule (6) is mounted on the outer ring of the main shaft (1), and a piezoelectric actuator (9) is mounted on the pretightening ferrule (6) through a mounting hole provided in the pretightening ferrule (6). A signal processing unit is connected between the piezoelectric actuator (9) and the temperature sensor (7), and the mounting position of the temperature sensor (7) is closed to the pretightening regulation and control point of the main shaft. After the temperature sensor (7) detects a temperature signal of the pretightening regulation and control point of the main shaft, the temperature signal is processed by the signal processing unit, and the pretightening force of the main shaft is adjusted by adjusting the pressure of the piezoelectric actuator (9). The high-performance high-speed main shaft under different working conditions is obtained by performing on-line regulation and control on the non-uniformly distributed pretightening force of the supporting bearing (2) of the main shaft.

Description

technical field [0001] The invention belongs to the application field of performance regulation and control of high-speed spindle rolling bearings, and relates to a high-speed spindle with non-uniformly distributed pretightening force controllable based on a piezoelectric actuator and a control method thereof. Background technique [0002] Rolling bearings are used as internal rotating support elements of high-speed spindles, and their service performance directly affects the dynamic performance of high-speed spindles, especially under the complex service conditions of the spindle system, such as the high-speed light-load and low-speed heavy-load replacement conditions of the spindle, requiring spindle bearings The service performance under different conditions can be controlled to meet the requirements of the dynamic performance of the spindle, so as to ensure the high precision and high reliability of high-speed machining. Therefore, how to adjust the service performance o...

Claims

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Application Information

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IPC IPC(8): F16C35/12
CPCF16C35/12F16C2233/00F16C25/08
Inventor 李小虎张晓毅朱祥张进华朱永生田久良李纯洁
Owner XI AN JIAOTONG UNIV
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