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二、圆拉法加工直齿锥齿轮刀具侧刃齿形曲率半径的计算公式 1.基本概念圆拉法加工直齿锥齿轮时,被切轮坯不动,而圆盘拉刀具有两个运动:绕本身轴线的等速回转运动和沿垂直于拉刀轴线的进刀方向作往复运动。这两个运动的速度要严格协调。圆盘拉刀上有粗切刀和精切刀。拉刀沿被切齿槽由轮齿小端向大端进刀时进行粗切,而以相反方向进刀时进行精切。精切进刀是等速的,且从A点开始(见图3a)。拉刀转一转切出全
Second, the circular Rafah processing straight bevel gear cutter side edge radius of curvature of the formula 1. Basic concept Circular Rafah processing straight bevel gear, the cut blank does not move, while the broach has two movements : Around its own axis of constant speed rotary motion and along the broach axis feed direction for reciprocating motion. The speed of these two movements must be strictly coordinated. Disc broach rough cutter and fine knife. Cutting along the broach along the tooth from the small tooth end to the big end of the rough cut, while cutting in the opposite direction for cutting. Fine cutting is constant speed, and starting from point A (see Figure 3a). Broach turn a full cut