Principle and application of mirror function in CNC system based on PMAC

As a high-precision multi-axis motion controller designed by Delta Tau, PMAC has been widely used in industrial fields. Mirror image is a function through which can machine the same trace in other place of the workpiece, not only saving the tool setting time but also simplifying the edit of program. By this way, product could have good accuracy and interchangeability. However, researches aimed at mirror function based on PMAC is rare. This paper analyzed the principle of mirror image, combined with coordinate transformation and G-code development way, a method to deliver the mirror function G-code has been put forward, which has already used in the independent R&D project single-point diamond ultra-precision CNC system. In addition, this article introduced an upper computer software of CNC system based on Qt and listed the program code of mirror function. The method is available to any CNC system based on PMAC, offering good versatility.