Title:
MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2020/085453
Kind Code:
A1
Abstract:
Provided is a machine tool (1), which: comprises a first main shaft (10) and a second main shaft (20); and when a bar (W) becomes a length that is difficult to machine into a product (P), removes the bar (W) as a previous material (W1) from the first main shaft (10) and delivers the same to the second main shaft (20) while supplying a new bar (W) as a new material (W2) from a bar supply unit (50) to the first main shaft (10) and, after making the previous material (W1) and the new material (W2) into a single bar (W3) by joining the mutually facing ends of the previous material (W1) gripped by a second gripping means (22) and the new material (W2) gripped by a first gripping means (12), successively performs a prescribed machining using a tool (41) and cutoff of the bar (W3). The machine tool (1) is characterized in being configured so that when performing the initial machining of the bar (W3) gripped by the first gripping means (12), the first gripping means (12) grips the portion of the bar (W3) that comprises the previous material (W1).
Inventors:
NOGUCHI KENJI (JP)
MISONO HARUHIKO (JP)
SUZUKI TOSHIYUKI (JP)
MISONO HARUHIKO (JP)
SUZUKI TOSHIYUKI (JP)
Application Number:
PCT/JP2019/041780
Publication Date:
April 30, 2020
Filing Date:
October 24, 2019
Export Citation:
Assignee:
CITIZEN WATCH CO LTD (JP)
CITIZEN MACHINERY CO LTD (JP)
CITIZEN MACHINERY CO LTD (JP)
International Classes:
B23B13/04; B23B25/06
Foreign References:
| JP2015174179A | 2015-10-05 | |||
| JP2004050303A | 2004-02-19 | |||
| JPS5255929U | 1977-04-22 | |||
| JP2017209776A | 2017-11-30 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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