浅析降低曲轴后端定位销孔孔径超差的技巧  

A Technology of Improving Bore Diameter of Dowel Hole at Back-end of Bent Axle

作　　者：王志龙[1] 高泽 WANG Zhi-long;GAO Ze(Beijing Research Institute of Automation for Machinery Industry,Beijing 100120 China)

机构地区：[1]北京机械工业自动化研究所,北京100120

出　　处：《科技创新与生产力》2018年第3期68-70,共3页Sci-tech Innovation and Productivity

摘　　要：为了解决曲轴机械加工中存在的定位销孔径偏大问题,笔者研究了一种降低曲轴后端定位销孔孔径超差的工艺技巧,根据曲轴定位销孔径加工的尺寸要求,对比了不合格工件与合格工件的定位销孔底孔刀痕与T12铰刀的磨损情况,提出通过调整曲轴后端定位销孔加工程序和优化T12铰刀修磨角度,防止加工时铰刀发生干涉问题而造成孔径加工异常,彻底消除了刀具异常振动造成的销孔孔径超差问题,降低了工件加工废品率和生产成本,对机械加工产品质量控制工作开展具有重要的指导意义。In this paper,in order to solve the existing problems of bore diameter of dowel hole is bigger in machining,the authors researched a technology of improving bore diameter of dowel hole at back-end of bent axle,and introduced dimensional requirement of bore diameter processing.Then,the authors compared cutting marks of hole bottom of dowel between unqualified workpiece and qualified workpiece as well as abrasion of T12 reamer,and put forward relevant solutions and specific measures of improving machining quality.On the basis of above-mentioned,starting with primary causes,adjusting workpiece programme of dowel hole at back-end of bent axle and optimizing sharpening angle of T12 reamer may prevent abnormal phenomenon of bore diameter caused by interference of reamer,thoroughly eliminate ultra-poor of dowel hole caused by abnormal vibration of cutter and lower rejection rate of workpiece processing and production cost.In the end,the authors put forward that this research has important guiding significance on carrying out quality control work of machining.

关 键 词：机械加工 曲轴 定位销孔 加工废品 修磨角度 刀具异常振动 

分 类 号：TH161.1[机械工程—机械制造及自动化] TH133.2