Edge working machine with hold down for sheet metal to be worked

Details Edge working machine with hold down for sheet metal to be worked Edge working machine with hold down for sheet metal to be worked

1976-11-19

1977-07-05

Whitehead, Harold D.

Work holders

With fluid means

Cylinder-piston means directly moves jaw

269258, B23Q 308

Patent

active

040335682

ABSTRACT:
A hold down device is disclosed suitable for an edge planing machine for working sheet metal. The hold down device has a plurality of hold down elements arranged in the direction of movement of the sheet metal and in a laterally overlapping relation. A plurality of piston cylinder units are provided and a single hydraulic cylinder is associated with and connected to each element for pressing it down against the sheet metal to be worked. The lateral surfaces of the elements facing the plate edge are in alignment with each other. The piston rod of the hydraulic drives are connected to the middle of each element for swivel action. The individual elements may either have an essentially rhomboidal or Z-shaped plan view. A further improvement adds spring forces and guidance to the hold down action.

REFERENCES:
patent: 3054316 (1962-09-01), Pearson

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