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    SPANNEINRICHTUNG
    3.
    发明公开
    SPANNEINRICHTUNG 审中-公开
    芯片器件

    公开(公告)号：EP3268158A1

    公开(公告)日：2018-01-17

    申请号：EP16714756.0

    申请日：2016-03-11

    申请人： Schunk GmbH & Co. KG Spann- und Greiftechnik

    发明人： WIEDMANN, Moritz ,  FEIN, Klaus ,  GROSS, Johann ,  TROßBACH, Robert

    IPC分类号： B23B31/30 ,  B23Q1/00

    CPC分类号： B23B31/302 ,  B23B31/305

    摘要： The invention relates to a clamping device, comprising a main body (1), in which a hydraulic-medium channel (2) is formed, which passes through the main body (1) axially between a front end face (1a) and a rear end face (1b), a switching piston (3), which is inserted into the hydraulic-medium channel (2) in such a way that the switching piston can be axially displaced, and securing means for securing the switching piston (3) in a front actuation position, wherein the securing means comprise a securing sleeve (4), which is retained in a rear segment of the hydraulic-medium channel (2) in such a way that the securing sleeve is axially fixed but can be rotated about the longitudinal axis (X) of the hydraulic-medium channel (2), wherein the securing sleeve (4) bears two guide webs (4a, 4b) at the front end of the securing sleeve, which guide webs are positioned on opposite sides of the longitudinal axis (X) and extend in the axial direction, the switching piston (3) axially extends through the securing sleeve (4) and has a radially protruding guide projection (3b), which is guided between the guide webs (4a, 4b) of the securing sleeve in an axially displaceable manner in a guiding position of the securing sleeve (4), wherein the axial length of the guide webs (4a, 4b) is dimensioned in such a way that the guide projection (3b) protrudes from the front end of the securing sleeve (4) in the actuation position of the switching piston such that the securing sleeve (4) can be rotated, and switching means are associated with the securing sleeve (4) for rotating the securing sleeve (4) in the actuation position of the switching piston (3) about the longitudinal axis (X) into a securing position, in which the guide webs (4a, 4b) reach behind the guide projection (3b) of the switching piston (3) and thus secure the switching piston (3) in the actuation position of the switching piston.