Definition and Classification of Gears
2025-01-13
Definition: Gears are toothed mechanical parts that can mesh with each other, transmitting power or speed through the meshing of gears.
Classification:
Spur gears: The plane where the tooth surface is located is parallel to the gear axis, with advantages such as smooth operation and high transmission efficiency.
Bevel gears: The plane where the tooth surface is located is not parallel to the gear axis, with advantages such as large torque transmission and the ability to transmit high power. They are widely used in heavy machinery.
Worm gears: Composed of a worm and a worm wheel, they have advantages such as a large transmission ratio and high precision, and are often used in gearboxes and reducers.
Straight gears: The tooth shape of the tooth surface is a straight line, with simple manufacturing processes, but with greater noise during meshing. Suitable for occasions where noise requirements are not high.
Involute gears: The tooth shape of the tooth surface is an involute shape, with a more complex manufacturing process, but with low noise and high transmission efficiency during meshing. Widely used in high-precision transmission fields.
Circular arc gears: The tooth shape of the tooth surface is circular, and the manufacturing process is also relatively complex, but it also has the advantages of low noise and high transmission efficiency. It is often used in automotive gearboxes and high-speed rail transmission systems.
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