精镗销孔是活塞加工中保证精度的关键工序之一。
Precise boring of the pinhole is one of the key processes guaranteeing precision in piston machining.
介绍了一种具有自主知识产权的自动补偿精镗装置，主要介绍了加工原理及控制系统。
This paper introduces a kind of fine boring equipment, which can automatically compensate the process error.
在引进汽车发动机生产线上对高速半精镗、精镗缸孔的CBN刀具进行了切削对比试验。
The comparison tests of CBN cutters for high speed boring cylinder blocks are carried out on the introduced car engine production lines.
本文从机床布置、镗削工艺、镗模、镗杆、镗刀、精镗头的设计等诸方面进行了分析、探讨，对以上五个难点问题给以解决。
The designs of boring process, boring mould, boring bar, boring tool and precision boring head are analyzed and researched, and the five problems above are solved.
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。
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。
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.
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