Title:
METHOD AND DEVICE FOR REAL TIME POSITION CORRECTION BY DEFORMATION OF BALL SCREW OF MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2013/058481
Kind Code:
A1
Abstract:
The present invention provides a method and a device for real time position correction by the deformation of a ball screw of a machine tool, wherein force applied to a ball screw is detected by using torque data which is applied to the servo motor of a conveying shaft when conveying or machining of a machine tool is performed, an error of a pitch that the ball screw deforms is calculated in consideration of the detected force and the mechanical strength of the conveying shaft including the ball screw, and the calculated error of the pitch is corrected by data which is corrected on a stored pitch error table such that the precision of the conveying and machining is improved. According to the present invention, the positional error of the conveying shaft, which is generated when conveying and machining is performed, may be corrected in real time.
Inventors:
KIM KI HONG (KR)
Application Number:
PCT/KR2012/007535
Publication Date:
April 25, 2013
Filing Date:
September 20, 2012
Export Citation:
Assignee:
DOOSAN INFRACORE CO LTD (KR)
International Classes:
B23Q15/24; B23Q5/40; B23Q17/20
Domestic Patent References:
| WO2007098917A1 | 2007-09-07 |
Foreign References:
| KR19990037075A | 1999-05-25 | |||
| KR970061439A | 1997-09-12 | |||
| JPH10100043A | 1998-04-21 |
Attorney, Agent or Firm:
HANBEOT PATENT LAW FIRM (KR)
특허법인 한벗 (KR)
특허법인 한벗 (KR)
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Claims: