Author name: zhygear

(1) Introduction to various tests It is difficult to distinguish the white spot defects of gears by naked eyes. It

Feature: flange crack usually occurs at the root between two adjacent teeth. Some of the web cracks are caused by

Impact defects are generally caused by heavy loads caused by rough handling. It usually occurs at or near the root

Main cause The maximum error of uneven rotation in each rotation of the gear hobbing machine table is too large:

Features: the stress is repeated alternation; the crack source is usually the stress concentration on the surface of gear, such

Fatigue is usually caused by repeated and excessive load, which is often broken at or near the root of gear.

Main cause The deviation between the vertical feed direction of hob and the axis direction of inner hole of gear

Main cause The center of the inner hole of the workpiece does not coincide with the turning center of the

The pitting point is a kind of fatigue defect, which occurs when small particles on the gear fall off from

Main cause 1) Incorrect adjustment of split exchange gear 2) Wrong selection of hob 3) Incorrect workpiece blank size 4)

1.Edge of tooth surface Main cause The profile error of hob is too large or the tooth splitting is powerless.