Elektrohydraulische Spannvorrichtung

摘要

This clamping device (S) has a control unit (not shown), guided by electrical signals and the machine tool is supplied by a pressure (P) from a motor (M) providing hydraulic fluid into the pump line (1), with a feed-back line (2). The clamping device possesses for its operation an hydraulic cylinder (W) which is connected through lines (16,17) and the path control valve (J) with a pressure line (19) and a return line (20). The pressure line goes to the regulating output of a setting valve (D), a part of the regulating circuit (H) of the device. Other features are also explained.