CAJ | 학술논문

椭球形、球形表面在现代机械生产中比较常见,这类特征需要数控加工.使用计算机自动编程时,程序修改不方便,加工程序编制时间长.通过分析椭球形电极表面加工工艺,分别给出球刀、立铣刀、牛鼻刀加工椭球表面的刀路算法、参数方程及适用范围.并以球刀层切椭球面为例,采用两个嵌套的循环语句编制宏程序,可使用G65指令调用,相当于给数控系统增加了一个固定循环功能,实现了该类零件加工程序的参数化,提高了加工程序的编制速度,可用于椭球、球类零件表面的铣削加工.通过一个具体实例对宏程序进行了验证.
타구형、구형표면재현대궤계생산중비교상견,저류특정수요수공가공.사용계산궤자동편정시,정서수개불방편,가공정서편제시간장.통과분석타구형전겁표면가공공예,분별급출구도、립선도、우비도가공타구표면적도로산법、삼수방정급괄용범위.병이구도층절타구면위례,채용량개감투적순배어구편제굉정서,가사용G65지령조용,상당우급수공계통증가료일개고정순배공능,실현료해류령건가공정서적삼수화,제고료가공정서적편제속도,가용우타구、구류령건표면적선삭가공.통과일개구체실례대굉정서진행료험증.
Oval sphere and spherical surface are often seen in modern machinery manufacturing,and numerical control (NC) machining is required for this kind of characteristics. When computer used for automatic programming,modification of a program is not easy,and a long period of time is taken for writing the cutting program. By analyzing the cutting technology for oval sphere surface of an electrode,the algorithm of tooltrajectory,parameter equation and applicable scope were given separately for the ball tool,vertical milling tool and cownose tool for cutting oval sphere surface. Moreover by taking an example of layer cutting of oval sphere surface with ball tool,a macroprogram was wrote with two embedded circulate sentences. It could be invoked by G65 code,which was equivalent to add a fixed circular function to the NC system. The parameterization of cutting program for this kind of parts is realized,and writing speed for the cutting program is improved. It can be used for milling and cutting parts with oval sphere and spherical surface. The macroprogram is verified by a detailed practical example.