通常,齿轮的齿是采用范成法(如插齿)或仿形法(如铣齿)来进行加工的。如果齿轮的几何形状很复杂一例如非圆齿轮一齿的加工就非常困难。插齿法可能是制造非圆齿轮最普通和最精确的方法,但是插齿法通常需要备有专用附件和工具,当小批量生产时,其成本就很高。轮齿亦可用铣齿法单个地进行加工。对于非圆齿轮,建立铣齿法在数学上很复 In general, gear teeth are machined using a fan-in method (such as a serrated tooth) or a profiling method (such as milling). If the gear geometry is complicated, for example, non-circular gear one tooth processing is very difficult. The pinch method may be the most common and accurate method of making non-circular gears, but the pinch method usually requires special attachments and tools, which are expensive at low volume. Gear teeth can also be used for single tooth milling process. For non-circular gears, the establishment of milling method is mathematically complex