HANDWERKZEUGMASCHINE
    1.
    发明授权

    公开(公告)号:EP1663574B1

    公开(公告)日:2007-04-11

    申请号:EP04738803.8

    申请日:2004-06-26

    申请人: ROBERT BOSCH GMBH

    IPC分类号: B24B23/02 B24B45/00

    摘要: The invention relates to a motor-driven portable power tool, particularly an angle grinder (10), comprising a housing (15) that houses a working spindle (17) having a spindle brake (21), on which a disc-shaped tool (43) having a central borehole (49) that overlaps the working spindle (17) with play can be tightened between an inner flange (39) and an outer flange (41). As the rotating working spindle (17) is braked, the tightening pressure exerted onto the tool (43) can be automatically increased so that, in the event of inertia-related residual rotation of the tool (43), wedge means (53, 55) can rotate therewith and can slide against one another, and it is attempted to reduce the axial distance of the inner flange (39) from the tool (43) or from the outer flange (41). The aim of the invention is to provide a portable power tool of the aforementioned type that can be manufactured in a functionally reliable and cost-effective manner. To this end, the working spindle (17), itself, supports, at least in part, first wedge means (53), and the inner flange (39) can, with corresponding second wedge means (55), be supported on the first wedge means (53) of the working spindle (17), and can be captively fixed thereto with axial play and torsional backlash.

    HANDWERKZEUGMASCHINE
    2.
    发明公开

    公开(公告)号:EP1663574A1

    公开(公告)日:2006-06-07

    申请号:EP04738803.8

    申请日:2004-06-26

    申请人: ROBERT BOSCH GMBH

    IPC分类号: B24B23/02 B24B45/00

    摘要: The invention relates to a motor-driven portable power tool, particularly an angle grinder (10), comprising a housing (15) that houses a working spindle (17) having a spindle brake (21), on which a disc-shaped tool (43) having a central borehole (49) that overlaps the working spindle (17) with play can be tightened between an inner flange (39) and an outer flange (41). As the rotating working spindle (17) is braked, the tightening pressure exerted onto the tool (43) can be automatically increased so that, in the event of inertia-related residual rotation of the tool (43), wedge means (53, 55) can rotate therewith and can slide against one another, and it is attempted to reduce the axial distance of the inner flange (39) from the tool (43) or from the outer flange (41). The aim of the invention is to provide a portable power tool of the aforementioned type that can be manufactured in a functionally reliable and cost-effective manner. To this end, the working spindle (17), itself, supports, at least in part, first wedge means (53), and the inner flange (39) can, with corresponding second wedge means (55), be supported on the first wedge means (53) of the working spindle (17), and can be captively fixed thereto with axial play and torsional backlash.

    摘要翻译: 本发明涉及一种电动便携式电动工具,尤其是角磨机(10),其包括容纳具有主轴制动器(21)的工作主轴(17)的壳体(15),盘形工具 (39)和外凸缘(41)之间的中间钻孔(49),该中心钻孔(49)可以通过间隙与工作主轴(17)重叠。 当旋转的工作主轴(17)被制动时,施加到工具(43)上的紧固压力可以自动增加,使得在工具(43)的惯性相关的剩余旋转的情况下,楔形装置(53,55 )可以与其一起旋转并且可以相互滑动,并且试图减小内部凸缘(39)与工具(43)或外部凸缘(41)的轴向距离。 本发明的目的是提供一种上述类型的便携式电动工具,其可以以功能可靠和成本有效的方式制造。 为此,工作主轴17自身至少部分地支撑第一楔形装置53,并且内部凸缘39可以与相应的第二楔形装置55一起支撑在第一楔形装置 工作主轴(17)的楔形装置(53),并且可以通过轴向间隙和扭转间隙被捕获地固定在其上。