A unified framework of error evaluation and adjustment in machining

作者：Wan, Xiao-Jin; Xiong, Cai-Hua; Zhao, Can; Wang, Xu-Feng^*

来源：International Journal of Machine Tools and Manufacture, 2008, 48(11): 1198-1210.

DOI：10.1016/j.ijmachtools.2008.03.014

• machine tool
• fixture
• resultant errors
• error transformation
• error evaluation
• error adjustment

Errors of machine tool, fixture, and datum on workpiece to be machined influence the machining accuracy of the workpiece. The objective of this paper is to provide a framework for abstracting an error model that integrates three types of errors, i.e., machine tool, fixture, and datum errors, into a unified one, Differential motion theory is used to build the evaluation model of three types of errors. The resultant deviation model of the tool with respect to the workpiece is derived by using the model. For the purpose of eliminating the deviation, the resultant geometric variation is mapped into the locator errors on the fixture. Then the position and orientation errors of the tool with respect to the workpiece may be reduced by adjusting the length of locators. Finally, the effectiveness of the resultant deviation model is verified by examples.

• 出版日期2008-9
• 单位华中科技大学; 黑龙江科技大学; 数字制造装备与技术国家重点实验室