复杂截面螺杆数控铣床包络法加工研究  

A Study of the Enveloping Machining of CNC Milling Machines for Screws of Complex Section

作　　者：谭伟强[1] 杨铁牛[1] 

机构地区：[1]五邑大学机电工程学院,广东江门529020

出　　处：《五邑大学学报（自然科学版）》2016年第2期55-60,78,共7页Journal of Wuyi University(Natural Science Edition)

摘　　要：针对成形法在加工一些变螺距、变深度、变螺棱等复杂的螺杆时存在加工精度低、加工效率不高的缺陷,提出了用包络法加工复杂截面螺杆.文章从数控包络原理出发推导出了变深变螺距螺旋面方程,并将此方程编入数控程序当中,通过加工实例论证其可行性.结果表明:在加工参数相同的条件下,原来的铣床加工600 mm的螺旋槽至少需要50 min,运用包络法原理加工需要45 min,且加工精度明显高于前者.Because the traditional forming method has the defects of low machining accuracy and low machining efficiency in the processing of complex screws with variable pitches, variable bottom diameters, variable spiral angles, the enveloping machining technology is put forward. Based on the principle of numerical control enveloping, this paper derives the equation of variable pitches and variable bottom diameters, and the equation is used in numerical control programs and the feasibility of the method is demonstrated through machining examples. The results show that： under the same conditions, when the 600mm spiral groove is processed by the conventional milling machine, it takes at least 50 min, when enveloping method is adopted, it takes 45 min, and the machining accuracy is obviously higher than that of the former.

关 键 词：包络法 螺杆加工 数控铣床 空间螺旋面 

分 类 号：TG547[金属学及工艺—金属切削加工及机床]