线切割加工质量的分析及改善措施

Analysis and improvement for wire-cutting electrical discharge machining

线切割加工在模具制造业中常用于加工精密、微细的模具零件。通过介绍线切割的加工原理,研究了线切割加工过程容易产生的加工质量缺陷,分析了加工面变形与开裂、变质层及表面粗糙度产生的原因,提出了进一步提高工件表面质量的改善措施和方法。实践中可以通过合理选材、优化电参数、选择正确的加工路线等方面综合分析和控制线切割加工,在保证生产率的前提下,改善和提高线切割加工质量。

Wire‐cutting electrical discharge machining is commonly used in the precision and micro‐parts machining process for the mould .Through the introduction of wire‐cutting ma‐chining principle ,the processing defects during wire‐cutting machining are analyzed ,such as the deformation and cracking on the machined surface ,the generation of metamorphic layer and rough surface .Some measures are also proposed to improve the surface quality . Practice proves that appropriate materials , optimal discharge parameters and reasonable cutting paths can improve the machining quality .