Requirements for grinding parts in gear grinding

1. Only involute tooth-shaped parts are allowed to be ground in the grinding gear

In modern hard-tooth surface heavy-duty gear grinding, only the involute tooth profile parts above the involute starting circle and below the involute ending circle are allowed to be ground.

2. It is not allowed to grind the round tooth groove of the tooth root in the grinding tooth

Regarding the tooth part of the inner gear ring, whether it is medium frequency quenching or carburizing quenching, whether it is internal or external teeth, the remarkable feature that it is not allowed to grind the tooth root groove part in the grinding of teeth has become the contemporary hard tooth surfaceHeavy duty gearThe most important signs and highlights in tooth grinding.

3. It is not allowed to produce bosses, steps and sharp points at the root of the tooth when grinding teeth

A step is ground at the tooth root (see the figure below). Due to the concentration of stress at the step, the high temperature generated by the grinding wheel during tooth grinding reduces the hardness and strength of the step, so the steppedgearWhen working under load, fatigue cracks will be generated at the steps and will gradually expand, which will eventually lead to tooth root fracture and failure.

4. At the tooth root and both sides of the tooth surface, after grinding, no grinding cracks and grinding burns are allowed.In a batch of gears, 100% of the gears are required to undergo flaw detection.

5. Color inspection must be carried out before strengthening shot peening.