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我们在使用XK—5040数控铣床加工某零件时,曾发生这样一种不正常的现象:刀具半径虽在允许的范围内变化,但当超过某一值时,会产生很大的误差,而当小于此值时,计算机工作才正常。为什么会产生这种情况呢?我们分析认为是由于BK—211控制机线路设计得不够合理,引起了插补小角度直线的错误。数控铣床加工的零件的型面大多是由直线或圆弧组成的。当这些直线或圆弧的起点半径与坐标轴之间夹角很小时,我们称这些直线或
When we use the XK-5040 CNC milling machine to process a part, we have had such an abnormal phenomenon: although the tool radius changes within the allowable range, but when more than a certain value, there will be a lot of errors, and when Less than this value, the computer is working properly. Why does this happen? We think it is due to the BK-211 control circuit design is not reasonable enough, causing interpolation of a small angle straight line error. CNC milling machine parts processing the shape of the surface mostly by a straight line or arc. When the starting point of these lines or arcs and the angle between the axes is small, we call these straight lines or