内燃机铝活塞精镗销孔加工方式改进及应用

Improvement and Application of Fine Boring Machining of Aluminum Piston Pin Hole of Internal Combustion Engine

精镗销孔工序是活塞加工过程中的重要质量控制点,加工质量对活塞的性能有很大影响,压缩高和销孔直径是本工序的关键特性尺寸,本文主要介绍对精镗销孔工序夹具的改进和采用销孔温度控制方法,使精镗销孔的工序能力显著提高。

The process of fine boring machining of piston pin bore is concemed as an important point for quality control. Machining quality has a big effect on the pistons performance and compression height and Diameter Of pin bore are the key dimensions. This paper mainly introduces the improvement of fixture used for fine boring of piston pin and the method of temperature control, which updates the ability of fine boring greatly.