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Leadscrew Actuators produce linear movement from the rotation of a rotary motor. They are used in a variety of applications, including position adjustment of hospital beds and furniture, machine tool actuation, valve actuation, and others.
Leadscrew actuators are based on a threaded rod and matching nut. One of these two elements is turned by a motor, either mounted directly to the motor shaft, or coupled by gears, belt, or other mechanism.
The other element is attached to the component to be moved, which in the case of the demonstration setup in this video, is a 110 pound load below the table. The relative rotation of the two elements causes a linear movement along the axis.
Different types of motors can be used. Stepper motors (www.geeplus.com/hybrid-steppe...) allow low-cost open-loop control, while brushless DC motors (www.geeplus.com/brushless-mot...) produce less audible noise, and have higher rotational speed capability.
Initially available in three sizes, the leadscrew actuators use standard M12 threaded rods for reduced cost and offer a pulley ratio of 4:1.
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15 авг 2019
