Super detailed gear type classification
Gear is a mechanical element with gears on the rim to continuously mesh and transmit motion and power.Gears of different sizes produce a change in torque, creating a mechanical advantage, through their gear ratio, and thus may be considered a simple machine. The following is the moste detailed classification of gears,according to different classification standards,gears can be divided into the following categories.
1. Cylindrical gear
a. According to the part structure, it can be divided into disc teeth and shaft teeth, and according to the tooth shape, it can be divided into straight teeth and helical gears;
b. It is used for the transmission of parallel shaft power and motion, such as engine ignition timing, transmission speed conversion, etc.
2. Bevel gear
a. According to the tooth profile, it can be divided into straight bevel gear and spiral bevel gear;
b. It is used for power and motion transmission of cross axle or cross axle, such as reducer and differential of rear axle.
3. Gear ring
The synchronizer gear ring used for variable speed synchronous control belongs to the outer gear ring, the sliding gear sleeve used for variable speed connection and the gear ring used for planetary variable speed transmission belong to the inner gear ring, etc.
4. Special purpose gear
Such as oil pump gear, speedometer worm, steering rack, etc.
5.Process
According to the process, it is divided into blank semi-finished gears, bevel gears, internal gears, spur gears, helical gears, worm gears and worms.
6. By transmission score
a. Constant transmission ratio - circular gear mechanism (cylindrical and conical);
b. Variable transmission ratio - good structure of non-circular gear machine (elliptical gear).
7. Relative position of the axle
According to the relative position of the axle, it is divided into plane gear mechanism, helical cylindrical gear transmission, spur cylindrical gear transmission, gear rack transmission, external meshing gear transmission, internal meshing gear transmission, herringbone gear transmission, space gear mechanism, bevel gear transmission, staggered shaft helical gear transmission and worm gear transmission.
8.Manufacturing method
According to the manufacturing method, it can be divided into rolling gear, sintering gear, casting gear, cutting gear, etc.
9.Shape
According to its shape: it is divided into cylindrical gear, non-circular gear, bevel gear, rack, worm and worm gear.
10.Gear teeth surface
According to the surface of the gear teeth: divided into external gear and internal gear.
11.Tooth line shape
According to the shape of tooth line, it can be divided into spur gear, helical gear, herringbone gear, curve gear, etc.
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