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Novel device for detecting inner rolling path profile of ball screw nut, and method of device

A ball screw nut and inner raceway technology, applied in the field of measurement, can solve the problems of large human factors, low efficiency, large errors, etc., and achieve the effects of good stability, high efficiency and high degree of automation

Active Publication Date: 2017-08-04
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the surface of the inner raceway of the ball screw nut is generally measured by the indirect method or contact sensor. Grind the sample, cut the obtained sample along the axis, and then project it on the large screen to observe the profile of the raceway section. If the requirements are met, use the grinding wheel as the standard processing tool for this type of raceway. This method requires cutting The nut causes damage to the test piece, and the human factor is very large, and the repeatability of the measurement result is poor; the contact measurement uses a profiler to measure, the probe penetrates into the nut and crawls along the raceway, and the profiler can obtain the raceway profile with amplified signal, This method has high requirements on the installation standard, and does not take into account the influence of the helix angle, resulting in large errors and low efficiency
To sum up, there is no special equipment to detect the inner raceway profile of the nut at this stage, and the existing detection methods cannot obtain specific relevant parameters of the left and right arcs of the raceway

Method used

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  • Novel device for detecting inner rolling path profile of ball screw nut, and method of device
  • Novel device for detecting inner rolling path profile of ball screw nut, and method of device
  • Novel device for detecting inner rolling path profile of ball screw nut, and method of device

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Embodiment 1

[0046] combine figure 1 , figure 2 , image 3 , a new ball screw nut inner raceway profile detection device of the present invention, including a marble platform and a nut clamping device arranged on the marble platform, an X-axis linear motion platform, a dual-frequency laser generator, a first laser interference instrument, the first collimating mirror and the first photodetector, the second laser interferometer supporting the first laser interferometer, the second collimating mirror and the second photodetector supporting the second laser interferometer, the third Laser interferometer, the third collimating mirror and the third photodetector matched with the third laser interferometer, the first light beam splitter, the second light beam splitter, the first light right-angle reflector, the second light right-angle reflector mirror, the third ray right-angle reflector and the fourth ray right-angle reflector;

[0047] The X-axis linear motion platform is located between ...

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Abstract

The invention discloses a device for detecting the inner rolling path profile of a ball screw nut, and the device comprises a marble platform, a nut clamping device and an X-axis linear movement platform, wherein the nut clamping device and the X-axis linear movement platform are disposed on the marble platform. The nut clamping device is provided with a to-be-detected part, and the laser light emitted by a double-frequency laser generator passes through a light splitter and a light right-angle reflector to reach a laser interferometer. The first laser interferometer is used for measuring the lateral displacement of a workbench. A second interferometer and a third interferometer play the same role, and the light passing through the second and third interferometers will generate diffuse reflection on a rolling path of the to-be-detected part. The returned light will be received by a photoelectric detector, and the contours of left and right arcs of the inner rolling path of the to-be-detected part are obtained with the movement of a measuring rod fixed on the X-axis linear movement platform. The device is high in precision, is high in measurement speed, does not damage the detected part, is high in automation degree, and meets the demands of automatic detection.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a novel ball screw nut inner raceway profile detection device and method thereof. Background technique [0002] At present, the surface of the inner raceway of the ball screw nut is generally measured by the indirect method or contact sensor. Grind the sample, cut the obtained sample along the axis, and then project it on the large screen to observe the profile of the raceway section. If the requirements are met, use the grinding wheel as the standard processing tool for this type of raceway. This method requires cutting The nut causes damage to the test piece, and the human factor is very large, and the repeatability of the measurement result is poor; the contact measurement uses a profiler to measure, the probe penetrates into the nut and crawls along the raceway, and the profiler can obtain the raceway profile with amplified signal, This method has high requirements on th...

Claims

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Application Information

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IPC IPC(8): G01B11/24
CPCG01B11/2441
Inventor 欧屹王瑞冯虎田徐小韵裴君婷
Owner NANJING UNIV OF SCI & TECH
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