Methods for reduction backlash of grinding CNC-machine tool

Abstract

In the article issues of improving the positioning accuracy and interpolation of circular traffic for a VZ700F4 grinding CNCmachine tool with a Siemens 802D are discusses. A method for determining inaccuracies in real time in various modes using a laser interferometer and ballbar is considered. Reduction of the measuring time is approximately 40–50 %. The indicators of positioning accuracy, the main reasons of the difference between real and program movements are investigated. The effect of ball screw repair with replacement of the X-axis sliding nut on the accuracy of the machine tool movements is described.