Precision testing method of five-axis NC machine tool based on ‘S’ specimen cutting

Abstract

‘S’ specimen through its unique profile features makes it possible to fully mobilise the five-axis linkage function in the five-axis finishing stage. The continuous rotation direction of the rotating axis not only reflects the static error of the machine tool but also the servo system follow error, tool positioning error, profile error etc. The authors studied its influence on the accuracy of each axis of five-axis CNC machine tool by analysing the geometrical characteristics of a S specimen and using UG's CAM environment to process ‘S’ specimen. Finally, the corresponding program forming system for S specimen machining experiments is designed by LabVIEW, and the authors used macro instruction to do NC program trigger system to collect vibration signals segmentally, so that the processing and acquisition system can be synchronised. This provides a more complete basis for the test piece cutting method to evaluate performance of machine tools.

Keywords

• production engineering computing
• vibrations
• machining
• servomechanisms
• machine tools
• position control
• computerised numerical control
• numerical control
• test piece cutting method
• macro instruction
• labview
• ug cam environment
• five-axis finishing stage
• five-axis linkage function
• unique profile features
• five-axis nc machine tool
• precision testing method
• test piece
• acquisition system
• nc program trigger system
• corresponding program forming system
• s specimen
• five-axis cnc machine tool
• profile error
• tool positioning error
• servo system
• static error
• rotating axis
• continuous rotation direction