航天用SiCp/Al复合材料卫星输出轴精密磨削工艺研究  

Research on Precision Grinding Technology of Aerospace SiCp/Al Composites in Satellite Output Shaft

作　　者：关佳亮[1] 赵显辉[1] 任勇[1] 孙晓楠[1] 陈玲 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100124 [2]北京卫星制造厂,北京100094

出　　处：《组合机床与自动化加工技术》2017年第2期146-149,共4页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：针对48%体积比SiCp/Al复合材料卫星专用输出轴的超精密加工难题,采用ELID精密磨削技术对其进行了工艺实验研究。首先,通过建立切入磨粒磨削模型,得到了48%体积比SiCp/Al复合材料的磨削机理及影响因素。然后探究了不同电火花参数对砂轮修整形貌的影响,并采用极差分析探究了各因素对工件磨削质量影响程度的大小。研究表明,当砂轮转速为1500r/min,进给量0.25μm,进给速度0.9m/min,电解电流10A,占空比60%时,磨削质量最好,得到了表面粗糙度Ra0.096μm,圆柱度0.85μm的48%体积比SiCp/Al复合材料输出轴精密磨削表面。In view of 48% by volume of SiCp / Al composites satellite dedicated output shaft ultra-precision processing problem,ELID precision grinding processing technology is used to carry on precision grinding experimental study for it. First,by establishing cutting-abrasive grinding model,the grinding mechanism and influencing factors of 48% by volume SiCp / Al composites was obtained. Then explored the different EDM parameters affect the morphology of Dresser and used range analysis to study the impact of various factors on the size of the prototype grinding quality. Studies show that when the wheel speed is 1500 r / min,feed rate is 0. 25μm,feed speed is 0. 9m / min,the electrolytic current is10 A,60% duty cycle,the grinding quality is best and obtained surface roughness Ra0. 096μm,CYL 0. 85μm of 48% by volume of SiCp / Al composite output shaft precision grinding surface.

关 键 词：SICP/AL复合材料 ELID精密磨削技术 工艺参数 正交试验 

分 类 号：TH161[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]