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What is a worm gear drive?
Jun 05, 2020

Worm gear drive is a drive that changes the direction of the drive. In the process of force transmission, the pressure generated is large, the friction is serious, and the heat generated is also large. In order to avoid gluing, in the selection of materials, softer alloy materials are often used because of the lower speed of the worm gear, while the worm is Use steel materials with greater strength.

The number of worm heads can be selected according to the transmission ratio and transmission efficiency requirements. The number of worm heads is small, the transmission ratio is large, but the efficiency is low. To increase efficiency, the number of worm heads should be increased. But the more worm heads, the more difficult the processing. In meeting the transmission requirements, the fewer the number of worm heads, the better.

There is usually a device for controlling the rotor behind the head of the electric fan. When pressed, the fan can be turned, and the direction of the fan can be fixed by pulling it out. The lower part that drives the rotating head of the electric fan can be regarded as a crank rocker mechanism. Driven by the worm gear drive, the lower gear rotates with it, and the rocker connected to it can swing within a certain angle under its drive, thereby achieving the purpose of allowing the fan to swing its head back and forth.

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