Actuator

Details Actuator Actuator

1996-09-11

1998-06-09

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74 8922, 7449009, 108 20, 108143, 384 50, 403170, 403217, 439 32, 901 16, F16H 2522, H01R 4100, B25J 502

Patent

active

057619603

ABSTRACT:
A motor, a ball screw shaft, etc. are accommodated within a frame that forms an outer frame. Direct-acting guides are provided on both sides of a groove-shaped opening defined in the frame. The ball screw shaft is centrally disposed within the frame. A table slides along the direct-acting guides under the action of rotation of the ball screw shaft. The ball screw shaft has ball-screw splines formed over its entire length and both ends thereof supported by the motor and a bearing. The center of rotation of the ball screw shaft is brought into alignment with the centers of rotation of the motor and the bearing by balls inserted into the ball-screw splines.

REFERENCES:
patent: 3991522 (1976-11-01), Hedlund et al.
patent: 4553798 (1985-11-01), Murphy
patent: 4564098 (1986-01-01), Hormann
patent: 4567347 (1986-01-01), Ito et al.
patent: 4662637 (1987-05-01), Pfeiffer
patent: 4678359 (1987-07-01), Keen
patent: 5445045 (1995-08-01), Nagai et al.
patent: 5499547 (1996-03-01), Nagai et al.

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