基于CAE技术的复杂形面特征塑件的翘曲变形诊断与优化

针对具有复杂形面特征的塑件在成型过程中容易出现翘曲变形的缺陷，以某实际注塑产品翘曲变形量超差为案例，采用计算机辅助工程（CAE）分析平台，对其进行成型过程的数值计算与模拟。以模拟结果为依据，进行合理分析，提出符合实际生产过程的模具结构优化方案。实践表明，利用优化方案进行成型生产，产品翘曲变形超差发生处的x、z方向上最大翘曲变形量由优化前的0.1726、0.1622 mm分别降低为0.0488、0.1156 mm，达到了翘曲变形量应控制在±0.15 mm的要求，得到了符合品质要求的塑件，从而进一步说明CAE技术在工艺优化与模具设计等方面的可靠性与实用性。

Analysis and Optimization of Warpage Defect in Injection-molded Parts with Complicated Shapes Based on CAE Technology

To reduce the warpage defects of thermoplastic parts with complicated shapes during the injection molding, a case study was conducted for an actually molded part with out of tolerance warpage defects, and a computer numerical simulation was also performed by use of a CAE analysis platform. Based on the simulation results, the optimized mold scheme was proposed through the reasonable technical analysis. The results indicated that the maximum warpage degrees of the part in X and the Z directions were reduced from 0.1726 and 0.1622 mm to 0.0488 and 0.1156 mm, respectively. These data met the requirement for the quality specifications of this part, and the qualified parts were achieved eventually. This further confirms the reliability and practicability of CAE technology when used for mold design and technological optimization.