摘要
针对长条状注塑制品比常规尺寸制品更易变形、变形量更大,且传统控制变形方法对其作用有限的问题,以典型长条状制品汽车门板防擦条为例,采用预变形反补偿法控制制品翘曲变形,并利用计算机辅助工程(CAE)技术进行多次预变形设计来确定制品最终的预变形量和预变形曲线,基于预变形后的制品设计完成了模具设计和制造,生产出了满足精度要求的制品。实践表明,预变形设计拓展了注射成型工艺窗口,能有效提高一次试模成功率和生产效率,是控制长条状制品翘曲变形的有效方法,而CAE技术是确定该类制品预变形方向和预变形曲线的重要手段。
For the injection-molded strip-like plastic parts,they are more easily deformed and have the larger deflection thanthe products with conventional size,the traditional method to control part warpage is not very effective for them. To solve the problemsmentioned above,taking a typical strip-like plastic part,chafing strip on the automobile door as example,the pre-deformedreverse compensating method was adopted to control the plastic part warpage,and CAE technology was repeatedly employed to predictthe warpage of the various pre-deformed parts for obtaining the final pre-deformation value and curve of the plastic part. Basedon the final pre-deformed design,the mould was designed and made and the real product meeting the accuracy requirements wasproduced. The practice shows that the pre-deformed design expands the injection molding process window,effectively improves thesuccess rate of once mould tryout and production efficiency and is the powerful technique for controlling strip-like plastic part warpage,moreover,CAE technology is an important tool for determining the pre-deformation direction and curve of strip-like plastic part.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2016年第8期46-49,64,共5页
Engineering Plastics Application
基金
国家自然科学基金重点项目(11432003)
河南省高等学校重点科研项目(15A430009)
关键词
长条状制品
预变形设计
翘曲
注射成型
计算机辅助工程
strip-like part
pre-deformed design
warpage
injection molding
computer aided engineering
