文献类型：期刊文献

中文题名：曲轴车-车拉加工工艺切削模拟试验研究

英文题名：Experimental Cutting Simulation Research on Turn-turn-broaching

作者：何云[1];倪昊[1];陈龙[1];严莹[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2013

卷号：30

期号：2

起止页码：91

中文期刊名：硬质合金

外文期刊名：Cemented Carbides

收录：CSTPCD

基金：国家重大科技专项;编号:2012ZX04003041

语种：中文

中文关键词：车-车拉加工;涂层硬质合金刀片;切削模拟试验

外文关键词：turn-turn-broaching; coated carbide insert; cutting simulation experiment

摘要：车-车拉工艺是现今汽车发动机曲轴主轴颈粗、半精加工中广泛应用的切削工艺。本文对车-车拉加工工艺流程进行了阐述,选取该工艺中最为复杂的斜刃车拉加工工序为研究对象,对涂层硬质合金斜刃车拉刀片的几何结构及涂层特点进行了分析。并基于Schroeter R B等人的试验方法,通过对刀具安装方式和工件材料的设计,在CNC斜床身车床上建立了切削模拟试验平台。通过改变总切深ap与进给量f,对斜刃车拉加工工艺进行了切削模拟试验,研究了斜刃车拉刀片的受力变化特点,以及上述两参数对切削力、加工表面圆度与加工表面粗糙度的影响特征。研究结果表明:在切削速度170 m/min条件下,斜刃车拉切削参数在总切深ap=0.15～0.2 mm,f=0.1～0.15 mm/r范围内选取,能获得较好的切削效果。
Turn-turn-broaching is widely used in rough and semi-finish manufacturing of the crankshaft. In this paper, the process of turn-turn-broaching was described. The turn-broaching insert with an oblique edge was chosen as the object of research. The insert＇s coating structure and geometric constructions were analyzed. Based on the experiment of Sehroeter R B, the experimental cutting simulation platform was established on a CNC lathe through redesigning the fixing of tool bar and the workpiece. The cutting simulation experiments with different cutting depth ae and the feed f were carried out. The change of cutting forces was researched. The influence of % andf on cutting forces, circular degree and surface roughness were analyzed. The results show that when the cutting speed is 170 m/rain, the better performance can be got with the parameters of ap-=0. 15--0.2 mm and f=0. 1-0. 15 mm/r.