Machining tests for identification of location errors on five-axis machine tools with a tilting head

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• 作者：Zhouxiang Jiang ; Xiaoqi Tang ; Xiangdong Zhou…
• 关键词：Five ; axis machine tools ; Location errors ; Machining test ; Measurement
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：79
• 期：1-4
• 页码：245-254
• 全文大小：1,819 KB
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• 作者单位：Zhouxiang Jiang (1)
  Xiaoqi Tang (1)
  Xiangdong Zhou (1)
  Shiqi Zheng (1)
  
  1. National NC System Engineering Research Center, Huazhong University of Science & Technology, 1037 Luoyu Road, Wuhan, 430074, China
  
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015

文摘

Location errors are considered as one of the fundamental errors of five-axis machine tools. For the improvement of machine accuracy, it is important to propose an efficient and accurate identification method of location errors. This paper proposes an identification method of location errors on a five-axis machine tool with a tilting head by a set of machining patterns. The machining patterns are proposed under the assumption that the influence of motion errors of each axis on the measuring results is sufficiently small. Location errors of both linear and rotary axes can be decoupled and identified. During the measuring of linear axes squareness errors, a new machining method that significantly increases the moving distances of linear axes without additional removal of material or enlarged volume of the workpiece is proposed. Also, a decoupling method of linear and rotary axes squareness errors relevant to this new machining method is introduced. The measuring accuracy of linear axes squareness errors is greatly improved based on these measuring schemes. The machining tests are performed on a commercial five-axis machine tool with a tilting head. The measurement results are acquired on a coordinate measuring machine, and the identification results are validated by comparing the geometric characteristics of workpieces before and after compensation.