基于接触特性优化的模具曲面气囊抛光实验研究  

Experiment research of mould curved surface of gasbag polishing based on optimizing the contact characteristics

作　　者：计时鸣[1] 敖海平[1] 金明生[1] 张利[1] 曾晰[1] 丁洁瑾[1] 

机构地区：[1]浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室,浙江杭州310014

出　　处：《机电工程》2012年第12期1367-1370,1375,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(50575285)

摘　　要：为提高模具自由曲面上的气囊抛光加工效果,在六自由度气囊抛光实验平台上对不同曲率半径的二维曲面模具进行了气囊抛光实验研究。首先,研究了模具自由曲面上不同曲率表面对于气囊抛光过程中接触区域的接触面积、接触宽度,接触力和抛光效果的影响规律;在此基础上,提出了在气囊抛光过程中通过调节气囊抛光头的下压量和内部充气压力来改变接触面积、接触宽度和接触力值的方法,使抛光时不同曲率表面接触区域内的平均接触压力相同,且沿运动方向的接触宽度也相同,从而使不同曲率表面在抛光后的抛光质量接近,使整个模具自由曲面的抛光效果达到最佳;最后,运用上述方法对二维曲面模具进行了抛光实验。实验研究结果表明,经过接触特性优化,不同模具曲率表面气囊抛光后接触区域内的抛光质量接近,抛光效果得到提高。In order to optimize the gasbag polishing effect on mould curved surfaces, polishing experiments on mould curved surfaces with different radius of curvature were made on the 6-DOF gasbag polishing experiment platform. The contact size, the contact force and polishing quality of the contact area and the polishing effect were studied. On this basis, a method was presented that through the adjustment of pressure amount and inflation pressure of the gasbag, the contact size and contact force can be adjusted and the polishing effect on the mould curved surface can be optimized. The two-dimensional surface of mould polishing was tested using the above method. The experimental results show that after optimizing the contact characteristics, polishing quality on different radius of curvature is on the same level and the polishing effects can be optimized.

关 键 词：模具自由曲面 气囊抛光 接触区域 接触特性优化 

分 类 号：TG580.6[金属学及工艺—金属切削加工及机床] TH162[机械工程—机械制造及自动化]