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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".
See also:
Service/Repair Shops;
Surplus Dealers;
Systems Integrators;
Tutorials and Discussion Groups
Gear Motors
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Mechanical
Drives
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Eddy Current
Drives
Obsolete/Unused Brands
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