滚刀铲磨用砂轮零编程数控修整方法

he process of hob relieving grinding is the finishing process of hob, the prevision of hob depends on the prevision of wheel mostly. In this paper, according to the problems in the course of the hob relieving grinding wheel dressing, the influence of different ways of wheel dressing on the hob relieving grinding are analyzed. The mathematic model on wheel dressing is deduced. On this basis, NC automatic programming for hob relieving grinding wheel dressing is introduced; the system and its control of the overall flow are obtained. CAD / CAM / CNC related knowledge expert’s knowledge is integrated. The system can identify AUTOCAD and other two-dimensional graphics file, and analyze the graphics intelligently. The profile of the relief grinding wheel and related key parameters are obtained. NC program for grinding wheel dressing is automatically generated. In this way, the system can automatically update the numeric programs for dressing process and compensate the decreasing of grinding-wheel’s diameter. This method has practical application on the hob relieving grinding machine.