Gear Finishing Processes

Gear Finishing Processes

Gear Finishing Processes - In order to operate most efficiently and render satisfactory life, gears must have accurate tooth profiles and the faces of tbe teeth must be smooth and hard. These are particularly important when gears must operate quietly at high speeds.

When gears are produced rapidly and economically by most of the processes except cold roll forming, the tooth profiles may not be as accurate as desired and the surfaces are somewhat rough and subject to rapid wear. Also, to obtain greater hardness, the gears may be heat treated after cutting teeth.

This may introduce some slight distortion and surface roughness. Thus, after the gears have been produced they require a finishing operation to be carried out on the teeth if high class, quiet running gears are required.

Objective of

The aims, objectives or purposes of gear finishing are:

(i) To improve accuracy.
(ii) To have uniformity of gear tooth element. To control eccentricity, pitch, profile and helix angle.
(iii) To achieve quiet operation at high speeds.
(iv) To improve life of the gear.
(v) To remove heat treatment distortions.