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1 概述 曲轴在工作中承受着复杂的周期性变化的气体压力、往复惯性力和力矩的作用 ,产生弯曲和扭曲变形 ;主轴颈和曲柄销与轴瓦构成摩擦副 ,运动中产生的摩擦磨损 ,使轴颈的不圆度和不圆柱度增大 ,当这些变形超过一定的限度 ,就会损伤轴颈 ,甚至造成曲轴疲劳断裂。因此 ,必
1 Overview Crankshaft in the work subject to a complex cyclical changes in gas pressure, reciprocating inertia and torque, resulting in bending and twisting deformation; main journal and crank pin and bearing constitute a friction pair, the movement of friction and wear, so that The out-of-roundness and non-roundness of the journal increases. When these deformations exceed a certain limit, the journal will be damaged and the crankshaft may even be fatiguely fractured. Therefore, must