How Are Gears Processed?

In the constantly changing field of gear machining, it is crucial to choose the most efficient and accurate machining methods and gear machining tools. The selection of cutting tools and gear machining methods is determined by the parts, production processes, and batch size.

In the soft machining stage of gears, the challenge is usually to obtain tight dimensional tolerances. Careful preparation during the quenching stage can make the turning process of hard parts relatively direct, followed by hard machining of the gears. In the turning of hard parts, predictable machining and good surface quality are crucial. All of this should be combined with high economic efficiency.

The gear machining process will undergo significant changes due to electric transportation, new gearbox designs, and ensuring flexibility and high productivity simultaneously. The focus will no longer be on traditional gear machining machines, and composite machining of gear/spline parts will become the norm. Strong tooth scraping will become a key focus as it will replace hobbing, pulling teeth, and spline rolling, and to some extent replace rolling teeth. Gear accuracy

Gears are usually classified according to the standard of tolerance requirements for processed gears. The most common precision classification standard for cylindrical gears is DIN 3962, which measures different gear parameters and classifies them according to grades 1-12. Other customer specific standards are also common, but their evaluation parameters are roughly the same as the DIN 3962 standard.

The accuracy level of gears is usually determined by the requirements of the parts and also depends on the application range of the gears.

Other requirements for ensuring ideal gear quality include:

High quality cutting tools

Clean contact surface

The amount of tool and workpiece runout should be minimized as much as possible

Stable clamping

Accurate and stable machine tools