Research on NC error compensation strategy with PRS-XY hybrid machine tool based on virtual and actual axis

Abstract

In order to overcome the influence of the particularity of the hybrid machine tool on the error compensation, this paper presents an error compensation strategy based on the NC error compensation model. The X-Y table and the spindle deflection accuracy of the machine are tested by the ballbar in this paper. Based on the real -virtual axis compensation structure,the detection and compensation is implemented.The accuracy data before and after compensation are analyzed and compared. It is confirmed that the error compensation strategy of the hybrid machine tool has a significant effect on the improvement of the motion precision of the hybrid machine tool.

Keywords

• hybrid machine tool
• ballbar
• error compensation
• virtual and actual axis