压力角是指不计算摩擦力的情况下，受力方向和运动方向所夹的锐角。如图中所示，α是作用于C点的力F与点C速度方向之间所夹的锐角，则角α为该平面机构传动时的压力角，即F和Ft所夹的角。压力角是判断机构动力学性能的一个重要指标。
许用压力角 allowable pressure angle ; allowablepre ureangle
渐开线压力角 pressure angle of involute ; pre ureangleofinvolute ; of ateeth ; prescertain angle of involute
基圆压力角 pressure angle of base circle ; pre ureangleofbasecircle ; prescertain angle of base round
极限压力角 Limit pressure angle
工作压力角 Operating pressure angle
产形轮压力角 Generating pressure angle
横压力角 [机] transverse pressure angle
任意点压力角 Pressure angle at a point
刀具压力角 cutter pressure angle
The pressure angle formulas of inside and outside profiles of the cycloid grooves are respectively deduced.
推出内、外摆线槽实际齿廓的压力角计算公式。
参考来源 - 端面啮合摆线钢球行星传动的动力性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
它不仅影响机构的压力角，而且还影响其轮廓曲线的曲率半径。
It influences not only the pressure Angle of mechanism, but also the curvature of earn contoUrs.
分析了摆动从动件盘形凸轮机构的压力角与基本尺寸之间的关系。
The relationship of cam with oscillating followers pressure angle and radius of basic circle were analyzed.
在一般条件下，标准齿轮滚刀只能加工与其模数、压力角相同的同制齿轮。
Generally, standard gear hobs are only used to machine gears with the same modul, pressure Angle as hobs themselves.
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