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Gear Processing Methods And Guidelines

Dec 05, 2018

1. Grinding: IT6~IT4→IT3, Ra: 0.8~0.2μm Principle: Forming method and forming method.

(1) Forming method grinding teeth IT6~IT5, Ra: 0.8~0.4μm, grinding with forming grinding wheel, high yield of raw gear transmission, low processing precision and less application.

(2) Spreading method

Conical grinding wheel grinding: the tooth profile of the grinding wheel is the tooth shape of the imaginary rack, the workpiece is rolled to the right, the right side of the first tooth groove is ground by the right side of the grinding wheel, and the root is ground to the top; then the workpiece is rolled to the left Grinding the left side of the lth groove to the left side of the grinding wheel, and grinding it from the root to the top. When both sides of the lth groove are completely ground, the grinding wheel automatically retreats from the workpiece, and the workpiece is indexed and rotated. Roll it further to the right to grind the 2nd tooth groove, and repeat the cycle until the full tooth is ground.

2. Grinding teeth:

IT7~IT6, Ra: 1.6~0.2μm Equipment: Rining machine. Abrasive: Abrasive grain: 220#~240#, active lubricating oil Features: Same as dental caries, can only reduce surface roughness, can not improve tooth shape accuracy.

Parallel axis grinding method:

1. Process: The grinding wheel is parallel to the axis of the grinding gear. When grinding, the grinding wheel drives the grinding wheel to perform free meshing movement without backlash. The grinding gear is also axially reciprocated, and the grinding wheel is slightly braked. After a period of time, the grinding wheel and the wheel being rotated are rotated in opposite directions so that both sides of the tooth are uniformly ground.

2. Features: Since the sliding speed of the tooth surface is not uniform, the grinding amount is not uniform, and the sliding speed at the top of the tooth and the root portion is large, and the amount of grinding is also large.

There are many types of planetary gears, and the performance of different types varies greatly. It is very important to choose the type according to the working conditions. Commonly used are ordinary planetary transmissions consisting of sun gears, planetary gears, internal gears and planet carriers, planetary gears with small tooth differences, cycloidal pin drives and harmonic drives. Planetary gears are generally assembled from parallel shaft gears. They are small in size and light in weight. The input shaft and output shaft can be on the same line. Its application is becoming more and more extensive.