How does gear hob cutters work ?

How does gear hob cutters work ?

A gear hob cutter is a type of hobbing machine used in milling machines to cut helical gears. Gear hobbing is the process of cutting teeth on gears that mesh with other meshing gears, like in a gearbox. The process starts by drawing an index line on the workpiece, and then moving a cutter along the index line (in one direction). The teeth are then cut into the workpiece using a rotary table containing cutting cams. You must select

Process of hobbing 

Gear hobbing is a relatively simple process. The main challenge is getting all the cutter bits to stay in alignment during the cutting process. To ensure proper alignment, hobbing machines are typically equipped with “cutter guides” that help ensure proper cutter movement and keep the cutter bits aligned with themselves. The adjustment of these guide feet can be critical to good gear hobbing results, and they are often adjusted manually by the operator. In addition to having the ability to adjust these feet themselves, hobbing machines also often have a separate standoff mechanism that will allow the operator to adjust these guide feet up and down at will during cutting operations.

Characteristics of hobbing machines

Hobbing machines have a number of characteristics that make them quite different from typical milling machines. The main differences lie in the way they are designed to operate, and the types of accessories typically included with hobbing machines.

The cutting tool used in hobbing is called a hobbit, which is a variation on the standard milling cutter. The design of the cutter and its method of operation are what truly set a hobber apart from other types of machine tools. Most other types of machine tools, such as milling and turning machines, remove chips from the workpiece by moving relative to each other (the cutting tool moves into or out from the workpiece).

Gear hobbing is a common operation performed on gears and other precision mechanisms. Gear hobbing plays an important role in turntable mechanisms, drive trains for automotive transmissions, and even some electric motors.

A gear hobbing machine is a type of milling machine that uses the standard hobbing cutting tool to cut gears with neat teeth. Hobbing machines are typically used to cut the teeth on gears designed with the correct number of tooth pitches for any particular application, or as part of larger gear production processes – e.g., at a gear manufacturer. Gear hobbing machines are used for gear cutting in a variety of applications, including transmissions (e.g. automatic transmissions or manual transmissions), dental applications and even the making of computer parts.

The main function of a gear hobbing machine is to ensure that the workpiece is being cut in the correct way so that the correct number of teeth will result when it is done milling. To accomplish this task hobbing machines have a number of features that make them different from other machine tools, including: The design of these features allows hobbing machines to serve as precise production tools for cutting gears, while maintaining accuracy and precision in their cutting process.


Gears are cut on hobbing machines by using a special type of cutter that is called a hobbit. The hobbit is surrounded by a housing that keeps it in place while the workpiece is rotated. There are many different types of hobbits, each with their own unique form of cutting structure and method to be used for cutting teeth into gears. The specific type of hobbit used will depend on the type of gear being made.The machine spindle that holds the cutter and feeds it into the workpiece will typically have some type of rotary table attached to it, and this table can also be moved up and down for additional control when cutting gears. It is essential to find reputed gear hob cutters manufacturers in India for the task.


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