The principle of forming hobbing of small module gears and the description of several motion conditions

The principle of forming hobbing of small-module gears and the description of several motion conditions are as follows, for reference and understanding.

Principles of forming hobbing:

The forming hobbing method is used withgearThe cutters with the same tooth shape or part of the same tooth shape are forced to mesh with the workpiece on the hobbing machine to cut out all the tooth shapes of the workpiece.

The hob 1 is installed on the cutter shaft of the hobbing machine, and the work piece 2 is installed on the work shaft. The transmission of the work shaft and the movement of the cutter shaft are driven by the same motor.The rotation of the cutter shaft 1 and the rotation of the workpiece move according to a certain rule through the machine tool transmission chain to complete the hob cutting motion.

During the forming hobbing process, there are the following movements:

1. Rotation of the knife axis;

2. Workpiece indexing movement;

3. The feed movement of the tool and the workpiece.

In order to ensure the normal operation of forming hobbing, the rotational speed of the tool and the workpiece axis must meet the following formula conditions: