Braking device of a linear motor table

Details Braking device of a linear motor table Braking device of a linear motor table

1998-06-09

1999-11-23

Bonck, Rodney H.

192 clutches and power-stop control

Stop mechanism

Drive release and brake

188 67, F16D 6300

Patent

active

059883421

ABSTRACT:
The present invention provides a braking device of a linear motor table which can stop in a fixed state of the table when the electrical feed is cut off. A braking device 11 is installed, which comprises: a shaft 12 extending in the direction of movement and attached to the table 42; a retainer 14 movably inserted onto the shaft 12; balls 15 inserted into the pocket of the retainer 14 and rolling along the shaft 12; an outer cylinder 16 located including the retainer 14 and having a tapered surface 16a on the inside of the outer cylinder; a coil spring 18 for urging retainer 14 to be jammed onto the tapered surface 16a; and a linear electromagnetic solenoid 17 which urge the retainer 14 for making the balls 15 release the tapered surface 16a. When the electrical feed is cut off, the balls 15 are jammed on the tapered surface 16a by the action of a wedge, and the table is stopped.

REFERENCES:
patent: 4030579 (1977-06-01), Sell
patent: 4382395 (1983-05-01), Haar
patent: 4515251 (1985-05-01), Wruk
patent: 4681506 (1987-07-01), Teramachi
patent: 5040431 (1991-08-01), Sakino t al.
patent: 5069326 (1991-12-01), Sakamoto et al.
patent: 5351789 (1994-10-01), Tochihara et al.
patent: 5829811 (1998-11-01), Skinner

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