T-slot hydraulic clamp system

Details T-slot hydraulic clamp system T-slot hydraulic clamp system

1986-10-14

1987-09-22

Watson, Robert C.

Work holders

Work-underlying support

Support mounting means

B23Q 302

Patent

active

046950478

ABSTRACT:
A hydraulic clamp embedded in a T-slot of a machine tool bolster plate, has a T-slotted piston rod end which fits continuously within the T-slot of the bolster plate. Using a T-configured member secured to the underside of a die shoe, and slid into the T-slot, actuating the hydraulic clamp draws the shoe downward, firmly clamping it against the bolster surface. If, instead of a T-configured member, and I-beam member (in effect, a double T) is used in a die shoe having a T-slotted undersurface, the clamping force is extended over the entire length of the I-beam. The effect is to avoid distortion of the die shoe. In addition to the surface friction attendant to the present distortion-free clamping, positive resistance of sideward displacement of the shoe is provided by the T-slot edges. When the present invention is not employed for clamping, the T-slotted surfaces of the bolster plates are unencumbered and may therefore be used and cleaned in an ordinary manner.

REFERENCES:
patent: 2281482 (1942-04-01), Crayton
patent: 3788632 (1974-01-01), Lukas
patent: 3998444 (1976-12-01), Stockwell
patent: 4058885 (1977-11-01), Bergman
patent: 4174828 (1979-11-01), Bergman
patent: 4356904 (1982-11-01), Siarto
patent: 4445675 (1984-05-01), Kitaura
patent: 4562919 (1986-01-01), Cattani
patent: 4577847 (1986-03-01), Schedwin
patent: 4583631 (1986-04-01), Yonezawa et al.
patent: 4611484 (1986-09-01), Kissinger et al.

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