发明名称 Hydraulic shock absorption in punch or cutting presses
摘要 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.
申请公布号 US4233872(A) 申请公布日期 1980.11.18
申请号 US19780953384 申请日期 1978.10.23
申请人 HARTMANN & LAEMMLE GMBH & CO KG 发明人 SCHULZE, ECKEHART
分类号 B23D15/14;B21D28/20;B30B1/32;B30B15/22;B30B15/28;F16F9/44;(IPC1-7):B30B15/00 主分类号 B23D15/14
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