摘要
目的解决薄壁塑件在注塑成形过程中出现的翘曲问题。方法采用moldflow软件对产品注塑成形过程进行了数值模拟分析,确定了补偿量,运用补偿法对模具进行了修正,补偿变形量。结果经过对模具的适当修正,薄壁塑件的翘曲量由原先的0.89 mm减少到0.29 mm,装配精度得到了很大改善。结论运用补偿法对塑件进行模具设计,使薄壁塑件的翘曲变形量大幅减少,尺寸精度满足使用要求,为生产实践提供了可靠依据。
To solve the warpage of thin-wall plastic parts occurring in the injection molding process. Injection molding process was analyzed by numerical simulation using Moldflow software, from which the amount of compensation was deter- mined. The mould was corrected by compensation method to compensate the deflection. After appropriate amendments to the mould, the warpage amount of the thin-wall plastic parts was decreased to 0.29 mm from the original amount of 0.89 mm, which greatly improved the assembly accuracy. The warpage amount of the thin-wall plastic parts was greatly de- creased and the dimensional accuracy met the operating requirement when the compensation method was used in mould de- sign for plastic parts, which provides a reliable basis for the production practice.
出处
《精密成形工程》
2015年第1期51-55,共5页
Journal of Netshape Forming Engineering
基金
国家科技部科技型中小企业创新基金支持项目(07C26225111923)
关键词
薄壁塑件
翘曲
数值模拟
模具补偿
thin-wall plastic
warpage
numerical simulation
mould compensation
作者简介
沈国保（1987-），男，山东菏泽人，硕士生，主要从事精密塑性成形及模具研究。
