Hydraulic shock absorption in punch or cutting presses

Details Hydraulic shock absorption in punch or cutting presses Hydraulic shock absorption in punch or cutting presses

1978-10-23

1980-11-18

Meister, J. M.

Cutting

Means to drive or to guide tool

With simple rectilinear reciprocating motion only

267119, B30B 1500

Patent

active

042338727

ABSTRACT:
There is provided a hydraulic shock absorption cutting and/or punching system which may be applied to a pre-existing press with said system having at least one damping cylinder that is under preset pressure supplied by a pump with the pressure chamber of the cylinder being connected with a damping valve. The damping valve has a piston-type displacing element including a throttle member, the construction and design of which provides for pressure-dependent adjustment of said throttle member in a housing on axial movement of said throttle member so that the cross section of a throttle gap is finely controlled and pressure-dependent adjustment of said gap is attained while also providing for practically constant flow through said throttle gap.

REFERENCES:
patent: 1849691 (1932-03-01), Rode
patent: 3124343 (1964-03-01), Williamson
patent: 3487736 (1970-01-01), Kaiser et al.

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