齿轮加工原理，常见的有两种，仿形加工和范成加工。

1、仿形加要领：齿轮加工刀具切出齿轮的齿槽，刀具的“截面形状”是齿轮齿槽的形状。大连数控加工齿轮时，没有齿轮啮合运动，加工出来的齿轮精度低，一般精度在11级以下；

2、范成加工要领：齿轮加工刀具自己就是“齿轮或齿条”，齿轮滚刀可以“认为”是齿条，属于齿条类型刀具。加工时，齿轮刀具与被加工齿轮之间有“齿轮啮合”运动。齿轮刀具齿廓刀刃，运动包络出被加工齿轮的齿廓、齿面，是理想的渐开线，加工精度较高，常见的有，滚齿、插齿、剃齿属于精加工。

There are two common principles of gear machining: profile machining and profile machining.

1. Imitation method: The gear machining tool cuts out the tooth groove of the gear, and the "cross-sectional shape" of the tool is the shape of the gear tooth groove. When CNC machining gears in Dalian, there is no gear meshing motion, resulting in low precision of the machined gears, generally below level 11;

2. Fan Cheng's machining method: The gear machining tool itself is a "gear or rack", and the gear rolling cutter can be "regarded" as a rack, belonging to the rack type tool. During processing, there is a "gear meshing" motion between the gear cutting tool and the processed gear. Gear cutting tools have tooth profiles and cutting edges that envelop the tooth profile and tooth surface of the processed gear. They are ideal involutes with high machining accuracy, commonly used in precision machining such as gear hobbing, gear hobbing, and gear shaving.