Geometric error measurement and accuracy verification of the swing head of a five-axis CNC machine tool with a single swing angle

doi:10.16511/j.cnki.qhdxxb.2020.25.006

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Abstract The swing angle accuracy is a key factor which strongly affects the machining performance of five-axis CNC machine tools and accurate measurements of the geometric error. This study measured the geometric swing head error of a five-axis CNC machine tool designed for machining aero-engine casings to verify the accuracy. This paper described a machine tool structure with a single direct-drive swing head and measurements of the main geometric errors of the swing head, including the deviation from the spindle end-face to the rotational center of the A-axis, the deviation between the swing sector and the YZ plane, and the height difference between the spindle axis and the A-axis. Then, the swing angle positioning accuracy was measured with the related position error. A cutting test on a simulated aero-engine casing showed that the machine tool swing angle accuracy was sufficiently accurate to properly machine the casing. The methods presented in this paper provide a foundation for improving the machining accuracy of five-axis machine tools in industry.

Keywords geometric error of the swing head five-axis CNC machine tool error measurement accuracy verification

Issue Date: 03 April 2020

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	WANG Liping
	ZHANG Shizhen
	WANG Dong

Cite this article:

WANG Liping,ZHANG Shizhen,WANG Dong. Geometric error measurement and accuracy verification of the swing head of a five-axis CNC machine tool with a single swing angle[J]. Journal of Tsinghua University(Science and Technology), 2020, 60(4): 292-298.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2020.25.006 OR http://jst.tsinghuajournals.com/EN/Y2020/V60/I4/292

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