main crank bore 主曲轴孔
The checkout error of distortion and flexure caused by tapers of crank bore and piston pin eye is analysed. The solution for this problem is put forward.
针对一般采用的几种连杆弯曲和扭曲测量方法，就连杆大小端孔锥度造成的测量误差进行了分析，并提出了解决途径。
The procedures are chamfering both sides of the gudgeon pin and crank pin core and semi-finishing the crank pin bore at a rate of 1000 pieces per hour at 100% efficiency.
加工工序是对活塞销孔和曲轴销孔的两侧端面倒角，并半精镗曲轴销孔，在负荷率100%时，生产率为每小时1000件。
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