一、概况上海微型轴承厂的SM6004磨床,主要用于轴承外圈内沟磨削加工,其工艺流程基本上是利用开关量的输入、输出控制一连串有序动作。要求处理的动态信息量较少。用到的输入输出信息达50个左右,其中包括磨床工作的输入、输出信号,预置砂轮修正值的拔盘输入信号,修正范围内加工只数的显 I. Overview Shanghai Micro-Bearing Factory SM6004 grinder, mainly used for bearing outer ring inner groove grinding, the process is basically the use of digital switch input and output control a series of orderly movements. The amount of dynamic information required to process is small. Input and output information used up to 50 or so, including the work of the grinder input and output signals, the preset grinding wheel correction pull-disk input signal correction within the scope of processing only a few significant