Work holders – Relatively movable jaws – With means for 'hold-down' component of force
Patent
1998-09-08
2000-10-31
Scherbel, David A.
Work holders
Relatively movable jaws
With means for 'hold-down' component of force
267 43, B23Q 302
Patent
active
061390011
ABSTRACT:
A workholding apparatus includes a top jaw member and a bottom master jaw element. The master jaw element is movably supported on a base member and has a keypart fixed thereto and projecting upwardly. The keypart receives the top jaw member. An aperture of the top jaw member having closed ends, and an open mouth surrounded by vertical walls, fits over the keypart of the top jaw member. The keypart can have a cross-section having portions resembling a double dovetail configuration. The aperture of the top jaw member has similar dovetail-shaped sections to receive the keypart. The keypart includes a takeup member having an arcuate keeper element secured and projecting from a surface of the keypart opposite the dovetail-shaped portions. The keeper element projects outwardly a small distance to seat on an inclined surface of the aperture very close to the vertical walls thereof. Thus the top member preferably is contacted by the keeper element at a location on the inclined surface within about 0.100 inch, and more preferably 0.060 inch from the mouth of the aperture.
REFERENCES:
patent: 5649694 (1997-07-01), Buck
patent: 5720476 (1998-02-01), Swann et al.
Brochure/Flyer of Dapra Corporation entitled "Introducing Dapra's Cost-Effective NC Vise."
Scherbel David A.
Shanley Daniel G.
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