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各种柴油机用曲轴上的曲柄圆截面形状各有不同,有整圆形状;有多段圆弧组合(且每段圆弧的轨迹都包容曲柄圆)形状;有椭圆形状;还有多段圆弧和多段直线组合(且每段圆弧的轨迹不能包容曲柄圆)形状等等。每段圆弧的轨迹不能包容曲柄圆的我们称之为特殊形状曲柄圆。各种形状曲柄圆的加工方法各有不同,整圆形和多段圆弧组合形状的曲柄圆加工比较容易。椭圆形、多段圆弧和多段直线组合形状的曲柄圆加工比较难,它们对加工方法、加工设备、刀具选择要求都比较高。
Various types of crankshafts on the crankshafts of various diesel engines have different shapes of the crankshafts and have the shape of a full circle. The shape of the crankshafts is a combination of multiple arcs (each arc of a circle contains a crank circle), an oval shape, Multi-segment straight line combination (and the trajectory of each arc can not accommodate the crank circle) shape and so on. The trajectory of each arc can not contain the crank circle we call the special shape crank circle. Various shapes Crank round processing methods are different, round and multi-arc combination of shapes of the crank circle processing easier. Oval, multi-segment arc and multi-segment combination of straight line shape of the more difficult round of processing, they are processing methods, processing equipment, tool selection are relatively high.