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Title:
MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2016/147979
Kind Code:
A1
Abstract:
This machine tool is equipped with: a column arranged to stand vertically upright, and having a prescribed coefficient of linear expansion; a spindle head supported by the column, and supporting a horizontal spindle for attaching a tool; and a reference bar set apart from the column, and having a coefficient of linear expansion different from the coefficient of linear expansion of the column. The column has a column-side region to be measured, and the reference bar has a reference bar-side region to be measured. A measuring means for measuring the distance between the column-side region to be measured and the reference bar-side region to be measured is provided.

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Inventors:
HIRABAYASHI KATSUMI (JP)
TADA ATSUSHI (JP)
Application Number:
PCT/JP2016/057341
Publication Date:
September 22, 2016
Filing Date:
March 09, 2016
Export Citation:
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Assignee:
TOSHIBA MACHINE CO LTD (JP)
International Classes:
B23Q17/00; B23Q15/18; G05B19/404
Domestic Patent References:
WO2008078519A12008-07-03
Foreign References:
JPS63200947A1988-08-19
JP2009184077A2009-08-20
JPS5836046U1983-03-09
JPS62126714U1987-08-11
JPS6056852A1985-04-02
JP2015094610A2015-05-18
Attorney, Agent or Firm:
NAGAI Hiroshi et al. (JP)
Hiroyuki Nagai (JP)
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