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Title:
MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2011/114869
Kind Code:
A1
Abstract:
Provided is a machine tool that, for workpieces that are held by either a front main shaft or a rear main shaft, is capable of machining the free end thereof which has been guided by a single guide bush, and minimizes increases in the number of control shafts with a simple and compact structure. A guide bush (160) having the same axis line as a front main shaft (112) and a rear main shaft (122) positioned facing one another, is positioned between the front main shaft (112) and the rear main shaft (122), can guide both sides of a workpiece (W), can have workpieces held by either the front main shaft (112) or the rear main shaft (122) inserted thereinto, and can move in the axial direction.

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Inventors:
NAKAYA TAKAICHI (JP)
Application Number:
PCT/JP2011/054455
Publication Date:
September 22, 2011
Filing Date:
February 28, 2011
Export Citation:
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Assignee:
CITIZEN HOLDINGS CO LTD (JP)
CITIZEN MACHINERY CO LTD (JP)
NAKAYA TAKAICHI (JP)
International Classes:
B23B3/30; B23B13/12
Foreign References:
JPH07136806A1995-05-30
JP2008238374A2008-10-09
JPS62199303A1987-09-03
JP2008296331A2008-12-11
JPH09225703A1997-09-02
JPH02152701A1990-06-12
JP2008238374A2008-10-09
Other References:
See also references of EP 2548679A4
Attorney, Agent or Firm:
TSUNO, TAKASHI (JP)
Takashi Tsuno (JP)
Download PDF:
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Claims:



 
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