公开(公告)号：EP2969336A1

公开(公告)日：2016-01-20

申请号：EP14770998.4

申请日：2014-03-13

申请人： Robert Bosch GmbH ,  Robert Bosch Tool Corporation

发明人： RUBENS, Jeremy ,  DVORAK, Chris

IPC分类号： B23D45/16 ,  B24B23/02 ,  B26D7/26

CPC分类号： B23B31/26 ,  B23B31/1173 ,  B23B31/14 ,  B23B31/18 ,  B23B31/201 ,  B23B31/207 ,  B23B31/223 ,  B23B2231/06 ,  Y10T279/17 ,  Y10T279/17179 ,  Y10T279/17196

摘要： A tool holding system for a rotary power tool is configured to clamp around a working tool when the working tool is inserted in the tool holding system. The tool holding system includes a sleeve having a frustroconical inner surface portion, a collet having frustoconical outer surface portion complementary to the inner surface portion, a spring mount operably connected to a motor for rotation by the motor, and a spring. The spring includes a first end portion operably connected to the collet to bias the collet toward a first position whereat the outer surface portion engages the inner surface portion, and a second end portion rotationally fixed with respect to the spring mount.