Motion Control Book Store

Gear Motors, Mechanical Drives

Gears

"Gears, toothed wheels or cogs are positive type drives which are used to transmit motion between two shafts or a shaft and a component having linear motion, by the meshing of two or more gears. Their definite velocity ratio is an advantage over other drives (such as traction drives and V-belts) in precision machines such as watches that depend upon an exact velocity ratio." Click here to learn more.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia Article: "Electric Motor".

Mechanical Drives

"There are two types of mechanical drives, variable pitch drives and traction drives.

Variable pitch drives are pulley and belt drives in which the pitch diameter of one or both pulleys can be adjusted.

Traction drives transmit power through metal rollers running against mating metal rollers. The input/output speed ratio is adjusted by moving the rollers to change the diameters of the contact path. Many different roller shapes and mechanical designs have been used." Click here to learn more.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia Article: "Electric Motor".

Eddy Current

"An eddy current drive consists of a fixed speed motor and an eddy current clutch. The clutch contains a fixed speed rotor and an adjustable speed rotor separated by a small air gap. A direct current in a field coil produces a magnetic field that determines the torque transmitted from the input rotor to the output rotor. The controller provides closed loop speed regulation by varying clutch current, only allowing the clutch to transmit enough torque to operate at the desired speed. Speed feedback is typically provided via an integral AC tachometer." Click here to learn more.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia Article: "Electric Motor".

Image:Gears animation.gif

source: Wikipedia 5/1/7

Recently Published:

The 2007-2012 World Outlook for Right-Angle Worm Gear motors with Enclosed Right-Angle Worm Gear Drive in Common Support with an Electric Motor and Having ... and Dependent or Interrelated Design (Paperback)