Title:
THERMAL DISPLACEMENT PREVENTION DEVICE AND THERMAL DISPLACEMENT PREVENTION METHOD FOR MACHINE TOOL HAVING BALL SCREW
Document Type and Number:
WIPO Patent Application WO/2014/061930
Kind Code:
A1
Abstract:
One object of the present invention is to prevent thermal displacement caused by the heat due to mechanical friction of a ball screw and bearing. The present invention relates to a thermal displacement prevention device for a machine tool having a ball screw and to a thermal displacement prevention method for a machine tool having a ball screw, wherein the thermal displacement prevention device includes: a bearing (22) disposed at the outer circumferential edge of a ball screw (10) in a machine tool having the ball screw (10); a bearing housing (21) which supports the bearing (22); a space part (50) formed on one upper side surface of the bearing housing (21); a heating unit (30) having an external shape which corresponds to the internal shape of the space part (50); a temperature sensor (40) disposed at a position facing the heating unit (30); and a control unit (70) which controls the ON/OFF of a power supply device (80) supplying power to the heating unit (30) according to the temperature measured by the temperature sensor (40).
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Inventors:
RO JIN SEONG (KR)
Application Number:
PCT/KR2013/008854
Publication Date:
April 24, 2014
Filing Date:
October 04, 2013
Export Citation:
Assignee:
DOOSAN INFRACORE CO LTD (KR)
International Classes:
B23Q5/40; B23Q15/00; F16H25/20
Foreign References:
| JPH0720241U | 1995-04-11 | |||
| JP2010025826A | 2010-02-04 | |||
| KR101017842B1 | 2011-03-04 | |||
| JP2003172427A | 2003-06-20 | |||
| CN2873409Y | 2007-02-28 |
Attorney, Agent or Firm:
HANBEOT PATENT & LAW FIRM (KR)
특허법인 한벗 (KR)
특허법인 한벗 (KR)
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