转换开关大、小件超级精密注塑模克隆设计和制造  

Cloning design and manufacture of super precision injection mold for large and small parts of transfer switch

作　　者：文根保[1] 文莉[1] 史文[2] Wen Genbao;Wen Li;Shi Wen(AVIC Aerospace Life-Support Industries Co.LTD.,Xiangyang 441002,Hubei,China;University of Sydney,Sydney 2194,Australia)

机构地区：[1]中国航空工业集团公司航宇救生装备有限公司,湖北襄阳441002 [2]澳大利亚悉尼大学,澳大利亚悉尼2194

出　　处：《橡塑技术与装备》2021年第16期29-34,共6页China Rubber/Plastics Technology and Equipment

摘　　要：转换开关大、小两件孔的精度超级高,根据供给商提供的图纸,从样件成型痕迹入手克隆设计了注塑模。由于提供图纸和塑料品种出现的差错及模具野蛮装配,使得注塑件经历了塑料和填充料及黏接剂品种的反复选用;黏接和胶带制作工艺作了上千次的试验;超级精度孔和孔位及其几何精度的几百次试制;模具的修复和利用注塑件二次限制性收缩特性,最终使得转换开关组件孔的精度均达到了IT6和IT7级,黏接平面度为0.02 mm,孔圆柱度小于0.005 mm,孔位不仅大、小两件一致,与德国样件也保持了一致。并突破了注塑件加工精度低的世界性难题,同时组件气密性和剪切强度达到了使用的要求,寿命还优于进口件。The precision of the large and small holes of the transfer switch is super high.According to the drawings provided by the supplier,the injection mold is cloning designed from the molding trace of the sample.Due to the errors in providing drawings and plastic varieties and rough assembly of molds,injection molded parts have experienced repeated selection of plastic,filler and adhesive varieties;The bonding and tape making process has been tested thousands of times;The super precision hole,hole location and its geometric accuracy have been trial produced for hundreds of times;The repair of the mold and the use of the secondary restrictive shrinkage characteristics of the injection molded parts finally make the hole accuracy of the transfer switch assembly reach IT6 and IT7,the bonding flatness is 0.02 mm,the hole cylindricity is less than 0.005 mm,and the hole position is not only the same as that of the large and small parts,but also consistent with that of the German sample.It breaks through the worldwide problem of low processing accuracy of injection molded parts.At the same time,the air tightness and shear strength of components meet the requirements of use,and the service life is better than that of imported parts.

关 键 词：转换开关 图纸 注塑模 设计 克隆 

分 类 号：TQ320.63[化学工程—合成树脂塑料工业]