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%25时，生产率为每小时1000件。