Machining Methods and Guidelines for Gears
Time: 2023-10-07
1. Grinding teeth: IT6~IT4 → IT3, Ra: 0.8~0.2 μ M principle: forming method and unfolding method.
⑴ Forming method for grinding teeth IT6~IT5, Ra: 0.8~0.4 μ m. Grinding with formed grinding wheels results in a higher production rate, lower machining accuracy, and less application of raw gear transmission.
2. Grinding teeth:
IT7 to IT6, Ra: 1.6 to 0.2 μ Equipment: Gear grinding machine. Grinding agent: abrasive particles: 220 #~240 #, active lubricating oil characteristics: same as honing teeth, can only reduce surface roughness, cannot improve tooth shape accuracy.
Parallel axis grinding method:
1. Process: The grinding wheel is parallel to the axis of the gear being ground. During grinding, the gear being ground drives the grinding wheel to engage in a free meshing motion without side clearance. The gear being ground also undergoes axial reciprocating motion, and the grinding wheel is slightly braked. After a period of time, the grinding wheel and the grinding wheel rotate in reverse to evenly grind the two sides of the teeth.
2. Features: Due to the uneven sliding speed and grinding amount on the tooth surface, the sliding speed and grinding amount on the tooth top and root are high.
Gear transmission with dynamic axis
There are many types of planetary gear transmission, and the performance of different types varies greatly. It is very important to choose the type reasonably based on working conditions. Commonly used are ordinary planetary transmissions composed of sun gears, planetary gears, internal gears, and planetary carriers, planetary gear transmissions with small tooth differences, cycloidal pinwheel transmissions, and harmonic transmissions. Planetary gear transmission is generally composed of parallel shaft gears, which have the characteristics of small size and light weight. The input and output shafts can be in the same straight line. Its application is becoming increasingly widespread.
⑴ Forming method for grinding teeth IT6~IT5, Ra: 0.8~0.4 μ m. Grinding with formed grinding wheels results in a higher production rate, lower machining accuracy, and less application of raw gear transmission.
⑵ Gear grinding using the generative method
2. Grinding teeth:
IT7 to IT6, Ra: 1.6 to 0.2 μ Equipment: Gear grinding machine. Grinding agent: abrasive particles: 220 #~240 #, active lubricating oil characteristics: same as honing teeth, can only reduce surface roughness, cannot improve tooth shape accuracy.
Parallel axis grinding method:
1. Process: The grinding wheel is parallel to the axis of the gear being ground. During grinding, the gear being ground drives the grinding wheel to engage in a free meshing motion without side clearance. The gear being ground also undergoes axial reciprocating motion, and the grinding wheel is slightly braked. After a period of time, the grinding wheel and the grinding wheel rotate in reverse to evenly grind the two sides of the teeth.
2. Features: Due to the uneven sliding speed and grinding amount on the tooth surface, the sliding speed and grinding amount on the tooth top and root are high.
Gear transmission with dynamic axis
There are many types of planetary gear transmission, and the performance of different types varies greatly. It is very important to choose the type reasonably based on working conditions. Commonly used are ordinary planetary transmissions composed of sun gears, planetary gears, internal gears, and planetary carriers, planetary gear transmissions with small tooth differences, cycloidal pinwheel transmissions, and harmonic transmissions. Planetary gear transmission is generally composed of parallel shaft gears, which have the characteristics of small size and light weight. The input and output shafts can be in the same straight line. Its application is becoming increasingly widespread.
