Measurement of ball nut profile using laser sensors

Kai WANG; Yi OU; Shi-qiang ZENG; Hu-tian FENG; Jian WU

doi:10.3788/OPE.20202801.0039

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Measurement of ball nut profile using laser sensors

Modern Applied Optics | 更新时间：2020-08-13

- Measurement of ball nut profile using laser sensors
- Optics and Precision Engineering Vol. 28, Issue 1, Pages: 39-49(2020)
- 作者机构：
  
  1.南京理工大学机械工程学院，江苏南京 210094；
  2.数控机床功能部件共性技术工业和信息化部重点实验室，江苏张家港 215600
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20202801.0039
  CLC： TP29; TH124; TH161.12
- Received：27 May 2019，
  
  Accepted：19 September 2019，
  
  Published：25 January 2020
- 稿件说明：
移动端阅览
Kai WANG, Yi OU, Shi-qiang ZENG, et al. Measurement of ball nut profile using laser sensors[J]. Optics and precision engineering, 2020, 28(1): 39-49.
DOI：

Kai WANG, Yi OU, Shi-qiang ZENG, et al. Measurement of ball nut profile using laser sensors[J]. Optics and precision engineering, 2020, 28(1): 39-49. DOI： 10.3788/OPE.20202801.0039.

摘要

为了实现滚珠螺母型面的快速精确测量，提出了激光测量方法并设计测量装置。首先，基于经直角棱镜反射的点激光轴向扫描的测量原理设计了螺母滚道型面检测装置，并根据滚道的数学模型提出轴法向转换的数据处理方法。然后，对直角棱镜的平移和转角误差、激光偏移误差、激光倾斜误差建立模型进行分析。最后，设计工装对标准钢球和圆槽进行扫描，并对螺母滚道开展实际测量。结果显示，完成误差标定后，经棱镜反射的点激光扫描圆弧轮廓的测量误差在3.1 33333m以内，标准差在2.2 33333m以内。对螺母滚道的扫描图像完整有效，总体精度满足螺母滚道型面的测量要求。

Abstract

To realize the rapid and accurate measurement of a ball nut profile

a laser measurement method is proposed

and a measuring device is designed.First

a device to measure the nut profile is constructed based on the principle of a point laser reflected by a right-angle prism scanning along the axial direction. According to the mathematical model of raceway

a new data processing method of axial normal transformation is proposed. Furthermore

the translation and rotation errors of the right-angle prism

laser offset errors

and inclined laser errors are analyzed and calibrated. Finally

the outline of a standard steel ball and circular groove are measured by the designed frock

and the nut profile ismeasured.After error calibration

the measurement error of the point-laser scanning arc contour is less than 3.1 μm

and the standard deviation is less than 2.2 μm. The scanning image of the nut raceway is complete and useful

which meets the measurement requirements of the nut raceway profile.

关键词

Keywords

references

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