Can shaving guarantee grade 7 accuracy?

The shaving accuracy can reach 7 grades, and the surface roughness of tooth surface is generally 0.8~ 1. 6 or so, because shaving is a finishing method for gears that are not hardened after hobbing, but now with the development of tool technology, shaving can also process gears with hard tooth surface, because there is hard skin on the hardened surface. Therefore, the machining process before shaving should improve the first-order accuracy, leaving a margin of 0.0 1~0.03.

Gear shaving is a finishing method of tooth profile, so the gear before gear shaving should have higher accuracy requirements, and the accuracy can only be improved by one level after gear shaving in the same city. When shaving, when the gear hardness is in the range of 22-32HRC, the gear shaving cutter has the best error correction ability. If the gear material is uneven, too many impurities or too high toughness will cause the shaving cutter to slip or bite. Finally, the machining accuracy is affected.

Gear shaving is a machining method based on the relative sliding along the tooth direction when a pair of helical gears with intersecting axes are engaged. The shaving productivity is high, the machine tool used is simple, the adjustment is convenient, and the shaving cutter has high durability. Usually, this method is used for gears in automobiles, tractors and machine tools.