Integrated processing technology for air-out line and figure on surface of capsule mould cavity

A technique for machining the gas exhausting line and patterns on the surface of die cavity used to produce capsules includes such steps as forging the die, rough machining, programming, numerally controlled turning, numerally controlled milling to generate the gas exhausting lines and pattern on the working interface of electrode, andelectrospark etching by use of said electrode. 本发明涉及一种胶囊模腔表面排气线花纹一体加工技术。包括模具锻造、粗加工、编程、数控车、数控铣、电火花刻蚀，其特征是：在数控铣的过程中，对电极料工作界面上通过前续编程一次加工有排气线和花纹，在电火花过程中利用带有排气线和花纹的电极料一次完成模具腔排气线和花纹的刻蚀。在数控车过程中模具腔的加工尺寸和同心度误差控制在±0.05mm，在电火花过程中上、下模外圆跳动量≯0.05mm，与工作台平行度≯0.04mm，电极夹具与工作台同心度≯0.02mm，粗加工电流70-90A，精加工电流2-5A。本发明加工技术的加工效率、加工精度都有大幅度提高，整个加工过程自动化程度高，一次性完成，模具本身和由此模具加工的后续产品的质量和寿命都有提高。该加工技术可以满足各种不同规格、型号胶囊模具使用。