某型柴油机曲轴孔加工精度提升研究  

Research of machining precision of crankshaft bore based on a certain type of diesel engine

作　　者：李世永 丁泽 张春明 郭鹏飞 LI Shiyong;DING Ze;ZHANG Chunming;GUO Pengfei(①Pre-production Manufacturing Center,Weichai Power Co.,Ltd.,Weifang 261061,CHN;School of Mechanical&Automotive Engineering,Qingdao University of Technology,Qingdao 266520,CHN)

机构地区：[1]潍柴动力股份有限公司新产品制造中心,山东潍坊261061 [2]青岛理工大学机械与汽车工程学院,山东青岛266520

出　　处：《制造技术与机床》2022年第4期149-153,共5页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金青年科学基金项目(52005280)。

摘　　要：针对某型柴油机曲轴孔圆柱度加工质量问题,尝试应用5M1E分析,锁定“机”、“料”是主要因素,并进一步分析得知夹具压紧工件变形是问题根源。基于夹具现状,考虑尽量减少改造,分析与优化了夹具压头数量与位置,通过线下测量与试切验证相结合方式,得出夹具压头油路压力3 MPa时既能可靠压紧工件,又能避免压紧工件变形,大幅提升了曲轴孔加工精度,研究方法对各类曲轴孔加工质量提升提供了参考。In order to resolve the cylindricity quality problem of crankshaft bore based on a certain type of diesel engine,processing 5M1E was researched,as a result,"machine"and"material"are the main factors,and deformation of workpiece is the root cause by further analysis.Based on the current situation of fixture,and to modify as little as possible,the number and position of fixture pressing bar were researched and optimized,and through the offline measurement and test cutting verification method,it is concluded that when the pressure of fixture pressing bar is 3 MPa,it can reliably press the workpiece and avoid the deformation of workpiece by pressing,thus solving the out-of-tolerance problem of crankshaft bore’s cylindricity machining.What’s more,the research method provides a reference for improving the machining quality of various crankshaft bores.

关 键 词：柴油机 曲轴孔 圆柱度 加工精度 5M1E 夹具 

分 类 号：TH162[机械工程—机械制造及自动化]