This paper introduces the manufacturing of no circle curve pa rts, use manufacturing the ellipse of second curve near way, user great progra mming way to ellipse curve and throw object line go on Numberical control progr amming.

• 文章介绍了非圆曲线零件的加工方法,用二次曲线逼近法加工椭圆曲线,以及用户宏程序法对椭圆曲线和抛物线进行数控加工编程。