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Volume 9, issue 2 | Copyright
Mech. Sci., 9, 267-276, 2018
https://doi.org/10.5194/ms-9-267-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 20 Aug 2018

Research article | 20 Aug 2018

Posture adjustment of workpiece based on stepwise matching by self-adaptive differential evolution algorithm

Lei Jiang, Yong Li, Yisheng Zou, Kun Tang, Yulong Fu, and Shuwen Ma Lei Jiang et al.
  • Institute of Advanced Design and Manufacturing, Southwest Jiaotong University, Chengdu, 610031, China

Abstract. The workpiece contour errors from previous process affect current and subsequent process. In order to improve the uniformity of workpiece allowance distribution, a stepwise workpiece matching adjustment method with contact inspection is developed. This method includes two stepwise registration processes. At first, some pairs of measured points on the theoretical and actual surfaces are selected to build the corresponding local coordinate systems, and then the rough matching matrixes are obtained by the coordinate systems alignment. During the fine matching process, the objective function based on the least square method is established by the measured point sets adjusted through the rough matching. The fine matching matrixes can be obtained by self-adaptive differential evolution algorithm. The posture adjustment can be realized by transforming coordinate systems of 5 axis machine tool, of which adjusted values can be calculated by the matching matrixes and the machine tool topology. At last, some experiments were presented to demonstrate the performance of the method.

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In order to improve the uniformity of workpiece allowance distribution, a stepwise workpiece matching adjustment method with contact inspection is developed.The stepwise matching includes the rough and fine matching processes. After matching, the spatial transformation matrixes R, T and the adjustment values of machine tool can be obtained accurately. At last, some experiments were presented to demonstrate the performance of the method.
In order to improve the uniformity of workpiece allowance distribution, a stepwise workpiece...
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