Micro ball roundness non-contact measurement clamping method

Abstract

A clamping method for non-contact measurement of the roundness of tiny spheres. The workpiece clamping device for realizing the method includes a fixture column head. The lower part of the fixture column head is installed on a rotating three-jaw chuck. The station groove of the sphere, the side of the station groove is equipped with a laser probe, the fixture column head is provided with a central through hole, the upper part of the central through hole communicates with the bottom of the station groove, the outlet of the lower part of the central through hole is connected to the air pump through the air guide tube, and the air pump There is an air pump pressure switch; the clamping process is as follows: put the microsphere to be tested into the station slot, start the air pump, pump air from the central through hole, and the microsphere to be tested placed in the station slot forms a cavity with the central through hole Negative pressure state, until the air pressure in the central through hole reaches the set value, the air pump stops working, at this time the microsphere to be tested is pressed tightly in the station groove; rotate the three-jaw chuck, and start the laser probe to collect data for roundness Measurement. The invention effectively reduces vibration and rotation interference and has high precision.

Description

technical field [0001] The invention relates to the field of non-contact measurement of the roundness of microspheres, in particular to a clamping method for non-contact measurement of the roundness of microspheres. Background technique [0002] With the development of electromechanical products in various fields towards miniaturization and precision, such as high-precision micro-milling machines, anti-lock braking systems (ABS) for automobiles, computer hard disks, digital cameras, micro-motors, etc., their rotating parts need to be used High-performance miniature bearings to control the volume of equipment and ensure its accuracy, performance, life and reliability. [0003] Micro balls are the most critical components of miniature rolling bearings, and their precision (mainly including surface quality and roundness) has a crucial impact on the motion accuracy and service life of miniature bearings, and are the most important basic components of equipment. [0004] At pres...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the existing non-contact measurement of the roundness of micro-spheres, which are easily disturbed by vibration and rotation and have low precision, the present invention provides a non-contact measurement of roundness of micro-spheres that effectively reduces the interference by vibration and rotation and has high precision. clamping method

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