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1·Noncircular gear Pitch curve Non-sinusoidal oscillation Serial gears;

非圆齿轮； 节曲线； 非正弦振动； 串联齿轮；

2·Smoothing algorithm is exploited to remove the errors of multiple frequency point, half frequency point and random point, and realize pitch curve smoothing.

使用平滑算法消除倍频点、半频点和随机点产生的误差，实现基音曲线平滑。

3·The proposed graphical method may directly plot the CAM profile without plotting its pitch curve, therefore its construction is more simplified and more accurate.

这种作图法可以直接求出凸轮的实际轮廓曲线而毋须绘制其理论轮廓线，因而使作图简化精确。

4·The polar equation of non-circular gear pitch curve, calculation method of center distance, formula of pitch curve length, primary circle radius and pressure Angle is given.

给出了非圆齿轮的节曲线极坐标方程，两齿轮中心距的计算方法，节曲线长度、基础圆半径和压力角的计算公式。

5·The key problem for drum-type flying shears is taking what specifications in designing a uniform speed non-knuckle gear and using what calculating method of its pitch curve.

设计什么性能的匀速非圆齿轮及其节曲线的计算方法是滚筒式飞剪的关键问题。

6·Appropriate pitch curve designing is a key of regularly working for non-circular planetary gear mechanism with variable center distance which can be used in low speed high torque hydraulic motor.

合理的节曲线设计是可用于低速大扭矩液压马达的变中心距非圆行星齿轮机构正常工作的关键。

7·According to the fundamentals that pure-rolling must take place between the pitch line of hob and the pitch curve of gear workpiece, the 4 axis complicated simultaneous-control relation was obtained.

从滚刀节曲线与齿轮工件节曲线之间必须进行纯滚动出发，推导出联动关系为4个坐标的复杂联动。

8·Using the curve fitted pitch, the universal calculation module of manufacture data of non-circle gear for all kind of non-circle gear can be got more easily.

利用拟合后的非圆齿轮节曲线，就可以使得所有非圆齿轮加工数据的计算有了通用的计算模块。

9·Programming by the plane curve unwrapped from the helix curve and cutting layer by layer, we created the variable pitch screw on the 3.5 axis NC milling.

文章基于3.5轴数控铣床，利用螺旋线展开的平面曲线编程，分层切削，加工出变螺距螺纹；

10·Curve ball: a pitch thrown with a rotation that makes the ball curve.

曲线球：投出旋转球，使球的飞行线路呈曲线。