后盖壳体压铸件起定模困难的分析与解决方案  

Analysis and Solution for Demolding Difficultly of Rear Cover Shell Castings

作　　者：刘德旺 郭兆坤 LIU De-wang;GUO Zhao-kun(Shaanxi Fast Automobile Transmission Group Co.,Ltd.,Baoji 722409,Shaanxi,China)

机构地区：[1]陕西法士特汽车传动集团有限责任公司,陕西宝鸡722409

出　　处：《铸造》2020年第9期968-971,共4页Foundry

摘　　要：JSD180重卡变速器副箱后盖壳体实际压铸生产过程中经常会因为起定模困难而影响生产。分析此铸件起模困难的各种影响因素,并制订了改进方案。通过在动模上设置倒扣、在定模上设置碟簧顶出机构等工艺措施,彻底解决了压铸件在开模瞬间起模困难、扭曲变形的问题。In the actual die-casting production process of heavy truck gearbox rear cover shell,the production is often affected because of the difficulty of demoulding.The factors influencing the difficulty of demoulding were analyzed and the improvement scheme was worked out.Through setting up the reverse buckle on the movable die and setting the disc spring ejection mechanism on the fixed die,the problems of demolding difficultly and casting deformation when opening die were solved.

关 键 词：变速器壳体 包紧力 倒扣 碟簧顶出机构 

分 类 号：TG245[金属学及工艺—铸造]