Actuator

Details Actuator Actuator

1995-11-13

1998-02-24

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

744248R, 384 53, F16H 2520

Patent

active

057202028

ABSTRACT:
An actuator designed in such a way that a feed screw having both ends respectively supported in a rotatable manner by a pair of bearing members arranged on a base is moved in the proper direction by a rotary driver, and as a feed nut engaged with the feed screw with its rotation being restricted by the feed screw is moved in accordance with the rotation of the feed screw, a slider attached to the feed nut is moved. A pair of support members are provided midway between the slider and the bearing members located on both sides of the slider and are movable in a feeding direction. The support members support the feed screw while their postures are restricted in a direction perpendicular to the feeding direction. The support members are coupled by first coupling means. Rotary bodies are respectively attached to the support members in a rotatable manner, with a thread member put around those rotary bodies. The thread member has both ends coupled to the slider and has its center portion secured to the base. The actuator is further provided with second coupling means for setting the moving speed of the support members to a half of that of the slider.

REFERENCES:
patent: 3728903 (1973-04-01), Haller
patent: 4878390 (1989-11-01), Hauser
patent: 5251501 (1993-10-01), Katahira
patent: 5531557 (1996-07-01), Springer

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