Vibration damper

Work holders – Relatively movable jaws – Means to actuate jaw

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Details

269228, 269310, B23Q 302

Patent

active

054942691

ABSTRACT:
A workpiece is clamped to a machine table while being machined, but a cantilevered portion of the workpiece is subject to vibrations. The cap of a vibration damping unit is supported on the machine base and spring-loaded upwardly against the workpiece. A support spring acting on a seat forces a damping element against the cap which, in turn, is impressed against the cantilevered workpiece. Vibrations are suppressed by horizontal shearing motion of the ring damping element. The entire damping assembly comprising the cap, ring damping element, seat and spring are retracted from the workpiece by means of a central rod connected to a manually actuated toggle clamp.

REFERENCES:
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patent: 3522864 (1970-08-01), Richter
patent: 3692370 (1972-09-01), Hasz
patent: 3998444 (1976-12-01), Stockwell
patent: 4054280 (1977-10-01), Alberts
patent: 4438599 (1984-03-01), Kamman et al.
patent: 4635911 (1987-01-01), Lovrenich
patent: 4821393 (1989-04-01), Spigarelli
patent: 4960269 (1990-10-01), Fong
patent: 5033340 (1991-07-01), Siefring
patent: 5040764 (1991-08-01), DuBois
Reid Tool Supply Company, Muskegon, MI, Catalog--Spring/Summer 1994 Edition pp. 166-171, (DE-STA-CO Toggle Clamps), and pp. 290-291 (chuck jaw grippers).
Barrymount Machinery Mounts, Vlier Engineering Company, Burbank, CA catalog No. MM-10, copr. 1986, pp. 2-5, 15, 18.
Shock and Vibration Handbook, 2d Ed. bu C. M. Harris and C. E. Crede, McGraw-Hill Book Company, New York, NY, copr. 1976, pp. 35-15, 35-16, 35-17, 40-2, 40-9, 40-10.

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