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我厂为“二汽”某分厂制造泡沫塑料切片机,该机的主要部件是双拐连杆曲轴(下称曲拐轴),其主轴颈为φ25K6,双拐连杆轴颈为φ20f9,偏心距为10±0.10mm,该轴系特殊细长型曲拐轴,见图1。由于工件形状复杂,精度要求较高,刚性差,该工件的机械加工甚为困难。一、加工曲拐轴的主要技术关键 1.由于曲拐轴过于细长,在夹持、车削、磨削过程中极易产生扭曲变形。 2.曲拐轴的毛坯制造困难。由于其过于细长,模
I plant for the “two steam” a factory manufacturing foam slicer, the main part of the aircraft is a double crank connecting rod (hereinafter referred to as crank shaft), the main journal φ25K6, double crank shaft φ20f9, Eccentricity is 10 ± 0.10mm, the shaft is a special elongated crank shaft, shown in Figure 1. Due to the complexity of the workpiece shape, high precision, poor rigidity, the workpiece machining is very difficult. First, the processing of crankshaft shaft key technical key 1. As the crank shaft is too slender, in the clamping, turning, grinding process can easily produce distortion. 2 crankshaft axis rough manufacturing difficult. Because of its too slender, mold