我们在加工图1所示零件时,需铣出一个半径为784的圆弧,如果按有关铣工书籍介绍,如《机械工人》73年第8期“用小直径铣刀加工大直径圆弧的近似铣切法”,或者是湖南科技出版社出版的《铣工》第206页;在立铣床上加工,铣头倾斜一个角度a,工作台做横向进给,利用铣刀在垂直于工作台平面的投影为一个椭圆,近似地铣出圆弧(图2),其计算铣头倾斜角a的公式如 When machining the parts shown in Fig. 1, we need to mill an arc with a radius of 784. If we refer to the books about milling, such as “Machinist” No. 73 of 73, “Machining a Large Diameter Arc with a Small Diameter Cutter Approximate milling method, ”or Hunan Science and Technology Press,“ Milling ”page 206; in the vertical milling machine milling, milling head tilted at an angle a, table horizontal infeed, the use of milling cutter in the plane perpendicular to the table Of the projection as an ellipse, arc milling approximately (Figure 2), which calculates the milling head tilt angle a formula