Invention Grant
- Patent Title: Hydraulic drive, in particular for machine tools, and method for controlling the hydraulic drive
- Patent Title (中): 液压驱动,特别是机床,以及液压驱动控制方法
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Application No.: US12450545Application Date: 2008-05-31
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Publication No.: US08549983B2Publication Date: 2013-10-08
- Inventor: Bert Brahmer
- Applicant: Bert Brahmer
- Applicant Address: DE Heidenheim
- Assignee: Voith Patent GmbH
- Current Assignee: Voith Patent GmbH
- Current Assignee Address: DE Heidenheim
- Agency: Farjami & Farjami LLP
- Priority: DE102007027603 20070612
- International Application: PCT/EP2008/004349 WO 20080531
- International Announcement: WO2008/151732 WO 20081218
- Main IPC: F15B11/044
- IPC: F15B11/044 ; B30B15/16

Abstract:
Provided is a hydraulic drive including a double-acting work cylinder with a piston having a first working surface effective in a retracting direction and a second working surface effective in an extending direction, wherein the first working surface delimits a first pressure chamber and the second working surface delimits a second pressure chamber, at least two different pressures being applicable to at least one of the first working surface and the second working surface for retracting or extending the piston into and out of the work cylinder, an actuator unit which optionally enables a throttled return flow of a hydraulic medium from the first pressure chamber delimited by the first working surface, and control means for triggering the actuator unit in such a way prior to a sudden acceleration of the piston due to a sudden force release.
Public/Granted literature
- US20100132349A1 HYDRAULIC DRIVE, IN PARTICULAR FOR MACHINE TOOLS, AND METHOD FOR CONTROLLING THE HYDRAULIC DRIVE Public/Granted day:2010-06-03
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