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Title:
MACHINING METHOD FOR THREADED SECTION AND MACHINING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/129314
Kind Code:
A1
Abstract:
The present invention prevents the occurrence of variation in the lead of a threaded section of a machined article (19a) resulting from the effects of thermal expansion of the machined article (19a) during machining. A thermal expansion amount that relates to the axial direction of the machined article (19a) during machining is measured by a measurement means (13), history information for the thermal expansion amount that relates to the machined article (19a) during machining is obtained from the result of the aforementioned measurement, and a control unit (17a) determines the relative rotation speed of a rotary drive shaft (11) or the feeding speed of an axial direction feeding device (16a) with respect to the next machined object (19a) that is to be machined on the basis of the history information for the thermal expansion amount of the machined object (19a) that has been machined.

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Inventors:
YOSHIMURA TAKASHI (JP)
KONDO YOSHITERU (JP)
Application Number:
JP2014/052793
Publication Date:
August 28, 2014
Filing Date:
February 06, 2014
Export Citation:
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Assignee:
NSK LTD (JP)
International Classes:
B23G1/44; B23G1/02; B23Q15/18; B62D5/04; G05B19/404
Foreign References:
JP2010042483A2010-02-25
JPS62228322A1987-10-07
JPH10286742A1998-10-27
JP2001277084A2001-10-09
JP2009072841A2009-04-09
JPH09323218A1997-12-16
Other References:
See also references of EP 2959997A4
Attorney, Agent or Firm:
Kiwa International (JP)
Patent business corporation Takakazu patent firm (JP)
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