公开(公告)号：EP0497312B1

公开(公告)日：1994-07-06

申请号：EP92101467.6

申请日：1992-01-29

申请人： HOWA MACHINERY, LTD.

发明人： Oketani, Tetsuya ,  Nishikawa, Hirotaka ,  Mase, Yoshiaki ,  Sakakibara, Yukihiro

IPC分类号： B23Q11/04

CPC分类号： B23Q17/09 ,  B23Q11/04 ,  G01L5/12 ,  Y10T408/14

公开(公告)号：EP0497312A3

公开(公告)日：1992-12-02

申请号：EP92101467.6

申请日：1992-01-29

申请人： HOWA MACHINERY, LTD.

发明人： Oketani, Tetsuya ,  Nishikawa, Hirotaka ,  Mase, Yoshiaki ,  Sakakibara, Yukihiro

IPC分类号： B23Q11/04

CPC分类号： B23Q17/09 ,  B23Q11/04 ,  G01L5/12 ,  Y10T408/14

摘要： A toolholder device (7) for a machine tool comprises a holder body (2) driven by a machine tool drive spindle (1), and a toolholder (6) supported on the holder body (2) so as to be circumferentially and axially displaceable. The holder body (2) and the toolholder (6) are provided with displacement detection elements (24 and 21) which are arranged circumferentially in interdigitating relation. A support shaft (3) extends from either member of the holder body (2) and the toolholder (6) toward the other member. The outer surface of the support shaft (3) and the inner surface of a support hole (11a) of the other member to be fitted over the support shaft (3) are formed with helical guide grooves (12) which are opposite to each other and slopingly extends with respect to the rotational axis of the toolholder device (7). Balls (13) are interposed between the opposite guide grooves (12) to form a displacement translation mechanism (14) which converts a rearward axial displacement of a tool (4) and the toolholder (6) due to overload axial thrust into a circumferential relative displacement between the adjacent detection elements (24 and 21). The relative displacement of the detection elements is detected by a detection unit (40) which issues a warning signal. A compression spring (20) in the device resists the axial displacement of the toolholder (6) unless the axial thrust exceeds a predetermined value.

公开(公告)号：EP0497312A2

公开(公告)日：1992-08-05

申请号：EP92101467.6

申请日：1992-01-29

申请人： HOWA MACHINERY, LTD.

发明人： Oketani, Tetsuya ,  Nishikawa, Hirotaka ,  Mase, Yoshiaki ,  Sakakibara, Yukihiro

IPC分类号： B23Q11/04

CPC分类号： B23Q17/09 ,  B23Q11/04 ,  G01L5/12 ,  Y10T408/14

摘要： A toolholder device (7) for a machine tool comprises a holder body (2) driven by a machine tool drive spindle (1), and a toolholder (6) supported on the holder body (2) so as to be circumferentially and axially displaceable. The holder body (2) and the toolholder (6) are provided with displacement detection elements (24 and 21) which are arranged circumferentially in interdigitating relation. A support shaft (3) extends from either member of the holder body (2) and the toolholder (6) toward the other member. The outer surface of the support shaft (3) and the inner surface of a support hole (11a) of the other member to be fitted over the support shaft (3) are formed with helical guide grooves (12) which are opposite to each other and slopingly extends with respect to the rotational axis of the toolholder device (7). Balls (13) are interposed between the opposite guide grooves (12) to form a displacement translation mechanism (14) which converts a rearward axial displacement of a tool (4) and the toolholder (6) due to overload axial thrust into a circumferential relative displacement between the adjacent detection elements (24 and 21). The relative displacement of the detection elements is detected by a detection unit (40) which issues a warning signal. A compression spring (20) in the device resists the axial displacement of the toolholder (6) unless the axial thrust exceeds a predetermined value.

摘要翻译： 一种用于机床的刀夹装置（7）包括由机床驱动轴（1）驱动的保持器主体（2）和支撑在保持器主体（2）上的刀架（6），以便沿周向和轴向移位 。 保持器主体（2）和刀架（6）上设置有位移检测元件（24,21），该位移检测元件（24,21）以交错关系周向配置。 支撑轴（3）从保持器主体（2）的任何一个和刀架（6）的构件朝向另一个构件延伸。 支撑轴（3）的外表面和待安装在支撑轴（3）上的另一个构件的支撑孔（11a）的内表面形成有彼此相对的螺旋形导槽（12） 并且相对于刀夹装置（7）的旋转轴线倾斜地延伸。 球（13）插入在相对的引导槽（12）之间以形成位移平移机构（14），该位移平移机构（14）由于过载的轴向推力转换成周向相对位置而转换工具（4）和工具夹具（6）的向后轴向位移 相邻检测元件（24和21）之间的位移。 检测元件的相对位移由发出警告信号的检测单元（40）检测。 装置中的压缩弹簧（20）抵抗刀架（6）的轴向位移，除非轴向推力超过预定值。