1. Gear accuracy
The gear application determines the gear accuracy class; frequently, the component specifications help to define this class. Usually, gears are categorised based on their needed value of the gear tolerance after machining.
Measuring several gear characteristics and categorising them on a 1–12 scale, DIN 3962 is the most often used standard for determining the accuracy of cylindrical gears.
Though their assessment criteria are generally the same as DIN 3962, other user-specific criteria are also somewhat prevalent.
2. Gear processing
In the always shifting world of gear machining, selecting the most precise and effective machining techniques and equipment is very essential.
The component, the manufacturing process, and the batch size all affect the tool and gear machining technique used. In the soft machining process of gears, reaching strict dimensional tolerances is a significant difficulty.
Careful preparation during the quenching step follows by rigorous machining of the gears to enable the turning process of hard components to be somewhat simple. Good surface quality and predictable machining are very crucial in turning hard parts. The gear machining process will change significantly due to e-mobility, new gearbox designs, and the simultaneous assuring flexibility and high productivity. The standard will be composite machining of gear/spline components, so the emphasis will shift from the typical conventional gear machining tools. Where power skiving will be the main emphasis, replacing shaping, broaching and spline rolling, and to some degree hobbing.