Gears are commonly used for transmitting power in machines. Metal, plastic and wood can be used for developing for creating gears .There are tiny gears for small devices like wrist watches and large gears used for big machines. For creating gears we use a method of Gear cutting . Gear cutters are basically used for creating tooth of gears. It include processes like hobbing, broaching, and machining; we can also follow the methods like shaping , forging, casting etc.
Shaping is very older process in which a gear is mounted blank in a shaper for creating tooth. Gear cutters are used for for proper shaping or making of gears. We have different methods which are used for cutting gears. Broaching can be used to create very large Splines or gears. In this process a vertical broach is used which consists of a vertical rail, carries a single tooth cutter formed to create the tooth shape. Hobbing is another process in which we use a tools called gear hobs. Different hobs used are spline hobs, chamfer hobs..etc. For information related to gear cutters you can refer to the site http://www.steelmansgears.com/
