Vacuum clamping system

Details Vacuum clamping system Vacuum clamping system

1991-04-26

1992-05-05

Bray, W. Donald

Gear cutting, milling, or planing

Milling

Templet, tracer, or cutter

144 2R, 144144R, 144372, 269 21, 294 641, 409130, B23D 130, B27C 500, B25B 1100

Patent

active

051102390

ABSTRACT:
A vacuum clamping system for trimming a flat or gently curved part from a sheet of material includes a template and a plurality of hold-down members, or pods, that sandwich the template between the pods and the workpiece. The template has a plurality of circular openings through its thickness. Each pod has an expandable bellows with an open suction end that extends downwardly through one of such openings, and comes into contact with and is closed by the workpiece. Subsequent evacuation of the bellows causes it to contract, thus pulling the workpiece tightly against one side of the template, and further pulling a clamping portion of the pod tightly down against the template's other side. This fixes the template in position between the pod and workpiece. Preferably, a number of pods are used in combinatiton with any given template to improve the clamping action.

REFERENCES:
patent: 4026591 (1977-05-01), Cleaveland
patent: 4351518 (1982-09-01), Stievenart
patent: 4557514 (1985-12-01), Cushman et al.
patent: 4558755 (1985-12-01), Lundin
patent: 4564188 (1986-01-01), McNair
patent: 5035409 (1991-07-01), Mullinere

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