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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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