Our company offers services in both metal and plastic processing, and we specialise in undertaking complex technological operations with accurate modelling of designed elements and workpieces, as requested by the customer.
Hobbing is just one of the processes on the long list offered by Metal Technology. This method gives gearwheels of various types their required forms and properties. Such precise components are commonly used today to transmit power and motion for numerous mechanisms.
Hobbing consists in the milling, broaching, planing or grinding of:
- Gears with parallel axes (rack-and-pinion, cylindrical straight, cylindrical helical and epicyclic gears),
- Gears with axes intersecting at an angle (straight-tooth bevel, also called angular, and curved-tooth gears, including input shafts and crown wheels, as well as cylindrical helical ones),
- Gears with axes which do not intersect and are not parallel (worm and hypoid gears).
Hobbing is a combination of machining processes, including turning, and is also based on the synchronised movement of two elements: the worm cutter and the gear blank being processed.
The gear blank is processed a tooth at a time. During this procedure, the gear blank moves through a fixed angle in combination with a single stroke of the cutter. The working area may be utilised in many different ways, depending on the type of gear being cut and the cutting tool (horizontal/vertical axis movements, with or without a balanced gear, with or without a differential mechanism).
As a company with technologically advanced and modern production machinery, we can hob elements with the following parameters:
- cutting of gears from Module 0.4 to Module 36, within the diameter range: 30-1,000 mm, and h=500 mm,
- cutting of wormwheels with module blades, from Module 0.5 to Module 10, with external diameters from 40 mm to 1,000 mm.
Furthermore, we can manufacture gears by means of special slotting machines (pinion cutters) according to the Fellows method, which alongside Maag and Sunderland’s is one of the most commonly used hobbing methods. We use this to process both external and internal teeth characterised by the maximum parameters of:
- Module 6, for diameters of up to 400 mm for external teeth,
- Module 6, for diameters of up to 400 mm for internal teeth,
- Module 6, for diameters of up to 450 mm for rounding of the teeth.
If you are interested in placing orders for the gears and gearsets manufactured by the hobbing technique, consider the services offered by Metal Technology.