汽车发动机缸体垂直度误差分析与控制  

Analysis and Control on Perpendicularity Error of Automobile Engine Block

作　　者：雷锋杰[1] 姚振强[1] 王大明 林观生 徐正松[1] 

机构地区：[1]上海交通大学机械动力与工程学院,上海200240 [2]上汽通用五菱股份有限公司发动机制造部,广西柳州545007

出　　处：《机械设计与研究》2012年第3期77-81,共5页Machine Design And Research

摘　　要：以上汽通用五菱汽车B11/B12型发动机缸体为研究对象,分析了缸体数控加工过程中影响垂直度误差的主要因素。通过试验研究,分析了由刀具磨损引起的铣削变形对缸体垂直度的影响规律;通过缸体粗加工与半精加工过程的工序规划调整试验,揭示了前道粗加工工序对后道半精加工工序的变形累积效应。提出了利用工序分离实现铣削应变释放以控制垂直度误差的新方法,在降低缸体垂直度误差的同时,提高了刀具的使用寿命。The SGMW automobile Bll/B12-type engine block is studied. The main factors of the perpendicularity error during NC machining are analyzed. The influence of the milling deformation on the Perpendicularity error of engine block is analyzed through experimental research. The experiment of process adjustments during rough milling and semi milling reveals the deformation cumulative effect of rough milling process on semi milling process. The new method of process separation is proposed to control the perpendicularity error by milling strain release. This method not only decreases perpendicularity error of engine block, but also improves the using life of cutting tools.

关 键 词：发动机缸体 垂直度误差 铣削变形 工序分离 应变释放 

分 类 号：TH16[机械工程—机械制造及自动化]