High accuracy detection algorithm for eccentric signal of grinding wheel

WANG Zhen-zhong; CHEN Shi-ping; WANG Quan-jin; YU Hui

doi:10.3788/OPE.20162413.0020

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High accuracy detection algorithm for eccentric signal of grinding wheel

更新时间：2020-08-13

- High accuracy detection algorithm for eccentric signal of grinding wheel
- Optics and Precision Engineering Vol. 24, Issue 10s, Pages: 20-27(2016)
- 作者机构：
  
  厦门大学航空航天学院,福建厦门,361005
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162413.0020
  CLC： {TG580.21+3}
- Received：17 May 2016，
  
  Revised：08 June 2016，
  
  Published：14 November 2016
- 稿件说明：
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王振忠, 陈世平, 王泉金等. 砂轮偏心信号的高精度检测方法[J]. 光学精密工程, 2016,24(10s): 20-27

WANG Zhen-zhong, CHEN Shi-ping, WANG Quan-jin etc. High accuracy detection algorithm for eccentric signal of grinding wheel[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 20-27
王振忠, 陈世平, 王泉金等. 砂轮偏心信号的高精度检测方法[J]. 光学精密工程, 2016,24(10s): 20-27 DOI： 10.3788/OPE.20162413.0020.

WANG Zhen-zhong, CHEN Shi-ping, WANG Quan-jin etc. High accuracy detection algorithm for eccentric signal of grinding wheel[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 20-27 DOI： 10.3788/OPE.20162413.0020.

摘要

为了提高精密加工中金刚石砂轮安装的偏心信号测量精度，首先采用非接触式测量法建立了一种基于激光位移传感器单点测量砂轮偏心信号的模型，然后提出一种基于砂轮回转轮廓圆度误差最小化的砂轮偏心量高精度逼近算法。该算法通过坐标转换、归一化处理、权值修正能快速还原出砂轮的偏心距和偏心方向。最后根据信号采集过程中传感器与磨床主轴的相互位置关系，得到了理想砂轮偏心信号的解析式，并进行了砂轮偏心检测的仿真实验。结果表明，本方法可以实现对砂轮偏心量的高精度检测，其检测相对误差总体保持在6%以内且收敛速度快。分析实际测量数据发现，采用本算法还原出砂轮偏心距和偏心角的最大测量误差分别保持在0.005 mm和0.02 rad以内，能够满足精密磨削加工中砂轮偏心量的检测精度要求。

Abstract

To improve the measurement precision of eccentricity signal during installation of diamond grinding wheel under high-precision machining

a kind of model based on single-point measurement of grinding wheel eccentricity signal by laser displacement sensor was set up based on the non-contact measurement. Then a high-precision approach algorithm for grinding wheel eccentricity put forward based on minimization of the rotary contour roundness error. The algorithm can fast restore eccentric distance and direction of the grinding wheel through coordinate transformation

normalization processing and weight correction. Finally

based on position relationship between the sensor and principal axis of the grinder during signal acquisition

an analytic formula for ideal grinding wheel eccentricity signal is given

and a simulation experiment for eccentricity detection of grinding wheel was also carried out. The simulation results indicate that this method can achieve high-precision detection of grinding wheel eccentricity

with high convergence rate and a relative detection error within 6%. The analysis on the experimental measurement data shows that stabilization precision of measurement repeatability by using the algorithm to restore eccentricity and eccentric angle of the grinding wheel remains within 0.005 mm and 0.02 rad respectively

which meets the detection precision requirement for grinding wheel eccentricity during its high-precision grinding operation.

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Keywords

references

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乔晓利,祝长生. 基于内置力执行器的砂轮不平衡振动主动控制[J]. 振动与冲击,2012,24:125-130. QIAO X L, ZHU CH SH.Grinding wheel unbalance vibration active control based on the internal force actuator[J]. Journal of Vibration and Shock,2012,24:125-130.(in Chinese)

崔长彩,余卿,张遨,等. 金刚石砂轮表面形貌测量系统[J]. 光学精密工程,2014,22(12):3167-3174. CUI CH C, YU Q,ZHANG Y, et al.. Measurement system of surface topography for diamond grinding wheel[J].Opt. Precision Eng.,2014,22(12):3167-3174.(in Chinese)

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GUO W, CHEN R, JIN J. Online eccentricity monitoring of seamless tubes in cross-roll piercing mill[J]. ASME. J. Manuf. Sci. Eng., 2015,137(2):021007-021007-10.

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