汽车胀断连杆用挤压丝锥的优化设计与应用  

Optimization Design and Application of Forming Taps for Automobile Fracture Splitting Connecting Rod

作　　者：刘海涛 符国建 祝新发 Liu Haitao;Fu Guojian;Zhu Xinfa

机构地区：[1]上海工具厂有限公司

出　　处：《工具技术》2019年第8期83-87,共5页Tool Engineering

基　　金：复杂刀具用高性能高速钢的稳定化生产与应用研究(2016YFB0300403)

摘　　要：为有效解决挤压丝锥在加工高强度非调质钢C70S6连杆挤压螺纹时易出现粘屑、攻丝扭矩大、螺纹孔粗糙度差和丝锥寿命短等问题,对挤压丝锥的关键结构参数和加工工艺进行优化,并用优化后的挤压丝锥进行切削寿命对比试验。结果表明,该优化设计可提高挤压丝锥加工C70S6材料连杆螺纹的使用寿命和提升产品质量。In order to solve the problems of chip sticking,large tapping torque,poor threaded hole finish and short tap life in machining the formed thread of connecting rods of high strength air-cooled forging steel C70S6,the key structural parameters and the processing technology of the forming tap are optimized,and the cutting experiments for tool life comparison are conducted.It is found that the optimization can increase the service life of the tap in cutting the formed thread of steel C70S6 and enhance the product quality.

关 键 词：连杆 挤压丝锥 结构参数 工艺优化 切削试验 

分 类 号：TG722[金属学及工艺—刀具与模具] TH122[机械工程—机械设计及理论]