公开(公告)号：EP2548679A4

公开(公告)日：2014-04-23

申请号：EP11756058

申请日：2011-02-28

申请人： CITIZEN HOLDINGS CO LTD ,  CITIZEN MACHINERY MIYANO CO

发明人： NAKAYA TAKAICHI

IPC分类号： B23B3/30 ,  B23B13/12

CPC分类号： B23B3/30 ,  B23B9/02 ,  B23Q39/027 ,  B23Q2039/008 ,  B23Q2230/006 ,  Y10T82/2524 ,  Y10T82/2579 ,  Y10T82/2593

摘要： There is provided a machine tool capable of working a workpiece regardless whether it is gripped by a front spindle or a back spindle while guiding a free end side thereof by one guide bushing (160), is simplify and compacted and suppresses an increase of a number of axes to be controlled. The machine tool comprises the front and back spindles (112) and (122) having one and same axial line and disposed so as to face to each other and a guide bushing (160) having an axial line identical with the axial line. The guide bushing (160) is disposed between the front and back spindles (112) and (122), is configured so that the guide bushing (160) can guide the workpiece on both ends of the workpiece (W), so that the workpiece gripped either by the front spindle (112) or the back spindle (122) can be inserted, and so that the guide bushing (160) is movable in an axial direction.

公开(公告)号：EP2452768A4

公开(公告)日：2013-10-30

申请号：EP10797130

申请日：2010-07-06

申请人： CITIZEN HOLDINGS CO LTD ,  CITIZEN MACHINERY MIYANO CO

发明人： NAKAYA TAKAICHI ,  KASUYA HIROSHI

IPC分类号： B23B1/00 ,  B23B31/02 ,  B29C33/12 ,  B29C45/14 ,  B29C45/26

CPC分类号： B23B31/16275 ,  B22C9/22 ,  B23B1/00 ,  B23B2270/16 ,  Y10T83/04 ,  Y10T279/17042 ,  Y10T428/15 ,  Y10T428/24331 ,  Y10T428/24612

摘要： There are provided a work material and a gripping mechanism capable of shortening a handling time not involved in works, shortening a time required for producing a plurality of finished members as a whole, accurately positioning the work material even if there is an axial dimension error, lessening waste of a material and lightening a burden for disposing discharged chips. The work material (100) has a shape in which a plurality of raw blanks (101) that become products by material removing works is integrally molded. The gripping mechanism (110) comprises a free moving means (120) that relatively and freely moves a gripper (112) and the work material (100) and a positioning means for defining axial gripping position of the gripper (112) and the work material (100).

公开(公告)号：EP2908200A4

公开(公告)日：2016-06-29

申请号：EP13845320

申请日：2013-10-03

申请人： CITIZEN HOLDINGS CO LTD ,  CITIZEN MACHINERY CO LTD ,  MITSUBISHI ELECTRIC CORP

发明人： YANAGIDAIRA SHIGEO ,  NAKAYA TAKAICHI ,  MATSUMOTO HITOSHI ,  SANNOMIYA KAZUHIKO ,  ODA SHOJI

IPC分类号： G05B19/409 ,  G06F3/041

CPC分类号： G05B19/409 ,  G05B2219/34456 ,  G05B2219/36004 ,  G05B2219/36159 ,  G06F3/041

公开(公告)号：EP1688200A4

公开(公告)日：2012-07-04

申请号：EP04819338

申请日：2004-11-22

申请人： CITIZEN HOLDINGS CO LTD

发明人： NAKAYA TAKAICHI ,  KAWAKUBO TAKASHI ,  IIDA TADAHIRO ,  NONAKA YOUHEI

IPC分类号： B23B13/02 ,  B23B13/12 ,  B23Q7/06

CPC分类号： B23B13/128 ,  B23B13/021 ,  Y10T82/2514 ,  Y10T82/2518 ,  Y10T82/2521