摘要
阐述了汽车变速箱同步器关键零部件的双锥汽车同步器外锥环和内锥环精密锻造的工艺要点和特殊点,对锻件所产生的缺陷的原因进行了分析,并突出体现工艺改进措施。通过改进模具结构,增加退料槽,改变以往坯料的截面形状和定位位置,改进坯料的加热设备,引进国内外先进设备,建设自动化齿环锻造生产线,使产品质量达到技术要求,延长模具使用寿命,产品合格率提高72%以上,达到批量生产标准(50000件)。同步器齿毂是汽车变速箱内的重要零件,如何生产出高精度、高质量的粉末冶金同步器齿毂是一个非常重要的课题。本文通过对异形键槽的粉末冶金齿毂生产工艺过程的分析,从模具的选材、模具结构、模具间隙、模具尺寸等方面,对同步器齿毂压制模具进行优化设计,使模具具有高使用寿命;同时,生产出来的同步器齿毂具有高精度、高质量。
This paper expounded the key points and special points of precision forging for doublecone motor synchronizer outer cone ring and inner cone ring of automobile gearbox synchronizerkey parts,analyzed the reasons for defects produced by forgings and put forward the processimprovement measures,by improving the die structure, added the retreating tank,change theshape and location of the cross section,import the heating equipment for billet and introduceadvanced equipment at home and abroad to built a automation gear ring forging production line,then make the quality of the product meet the technical requirements,prolong the service life ofthe mold,the qualified rate of the product is increased by more than 72%,to meet the massproduction standard（50,000）.The synchronizer hub is an important part in the automobilegearbox,how to produce high accuracy and high quality powder metallurgy synchronizer gear hubis a very important topic.This paper analyzed the production process of powder metallurgy hub ofspecial keyway,carried out the design of the pressing die for the synchronizer hub from theaspects of material selection, die structure, mold clearance, die size and so on,make the die ahigh service life,and the synchronizer hub has high accuracy and high quality.
出处
《模具制造》
2018年第5期77-80,共4页
Die & Mould Manufacture
关键词
汽车变速箱
同步器齿毂
模具结构
同步器齿套
automobile gearbox
synchronizer tooth hub
die structure
synchronizer gear sleeve
