Hobbing is a machining procedure for cutting tools, teeth, and gears on a gear milling machine, a particular type of milling device. The teeth or splines of the gear will gradually cut into the material, a flat cylindrical piece of metal. This is done by making a series of cuts using a burner cutting tool. Grinding is relatively fast and inexpensive compared to most other gear machining processes and is used for a wide range of parts and quantities.] Grinding is prevalent for machining spur and helical gears. A type of stripping similar to gear fastening of external gears can be applied to machining internal gears, which is used to face a rotary cutter.
What is Gear Hobbing?
For the production of high or low-volume external cylindrical gears. The gear hob cutters manufacturers in india often use a continuous gear construction technique called gear clamping. One of the leading manufacturing techniques used in this sector is gear fastening. Modern engineering practice constantly increases requirements for old and new types of additional gearing with better and higher accuracy. Gear Hobbing creates gear teeth using a rotating cutter called a ‘hob.’ A hob resembles a worm gear.
Types of Hobby Processes:
Hobbing with Axial Feed
In the hobbing process with axial feed. The gear head is fed to the neutral work piece along the leading edge of the neutral and parallel to the rotating axis. This method is generally used to produce spur gears and helical gears.
Hobbing with Radial Feed:
In this hobbing method with radial feed. The burner head or cutting tool and the gear blank are set with axes at perpendicular angles. The rotating burner head or cutting tool is fed slowly with the gear blank in the radial direction or the direction normal to the axis of the gear blank. This method is suitable for producing worm wheels.
Hobbing with Tangential Feed:
This hobbing process is generally used for cutting teeth on a worm wheel. In this case, the hob is mounted with the axis horizontal but at a perpendicular angle to the axis of the gear blank. The burner head or cutting tool is fixed to the full depth of the cutting teeth. It is then continuously fed forward in the axial direction. The burner head is fed into contact with the neutral gear face in this operation.
Advantages of the Gear-Making Process:
- Gear fastening is a quick and continuous process. Therefore, gear hob cutter suppliers consider this an economical process compared to other gear-making processes.
- Production cycle times are reduced, such as faster production.
- This process has more significant variability in the following respects compared with other gear machining processes.
(i) Various gears can be made, such as spur gears, helical gears, worm gears, gear splines, gears, etc.
(ii) The required indexing process is quite simple, and any number of teeth can be created with the module’s consistent precision.
(iii) A particular type of gear named herringbone cam gear is made by fixing the gear specially.
- Multiple gear slots mounted on the same arch can be processed simultaneously.
- A hob is a multi-point cutting tool with many cutting teeth or edges at a time with a small number of cutting edges. Therefore, there is plenty of time to dissipate the heat generated.Â
