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절삭 가공 공정 모니터링에서 이송 모터 구동 전류를 이용한 절삭력 추정

Cutting Force Estimation Using Feed Motor Drive Current in Cutting Process Monitoring

Journal of the Korean Society for Precision Engineering 2020;37(11):803-812.
Published online: November 1, 2020

1 한국생산기술연구원 공정플랫폼연구부문

2 한국생산기술연구원 지능형생산시스템연구부문

1 Manufacturing Process Platform R&D Department, Korea Institute of Industrial Technology

2 Intelligent Manufacturing System R&D Department, Korea Institute of Industrial Technology

#E-mail: youngjae@kitech.re.kr, TEL: +82-31-8040-6165
• Received: September 9, 2020   • Revised: September 28, 2020   • Accepted: October 6, 2020

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Citations

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  • Tool Wear Monitoring System based on Real-Time Cutting Coefficient Identification
    Young Jae Choi, Ki Hyeong Song, Jae Hyeok Kim, Gu Seon Kang
    Journal of the Korean Society for Precision Engineering.2022; 39(12): 891.     CrossRef

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Cutting Force Estimation Using Feed Motor Drive Current in Cutting Process Monitoring
J. Korean Soc. Precis. Eng.. 2020;37(11):803-812.   Published online November 1, 2020
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J. Korean Soc. Precis. Eng.. 2020;37(11):803-812.   Published online November 1, 2020
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Cutting Force Estimation Using Feed Motor Drive Current in Cutting Process Monitoring
Image Image Image Image Image Image Image Image Image Image Image Image Image Image
Fig. 1 Photo and structure of the machine tool used in the experiments (Doosan nx5500Ⅱ)
Fig. 2 Device installation and schematic diagram for experiments
Fig. 3 Schematic diagram of ball screw
Fig. 4 Current of the feed motors when X-axis motor is rotating and Y-axis motor has remained stationary
Fig. 5 Current of the feed motors when X-axis motor has remained stationary and Y-axis motor is rotating
Fig. 6 Tool paths for experimentations
Fig. 7 Measured cutting force for the rectangular tool path
Fig. 8 Measured cutting force for the circular tool path
Fig. 9 The tool path and machined result of ISO10791-7 M1 80 test specimen
Fig. 10 Measured sensor signals
Fig. 11 Schematic diagram of an experiment to examine the relationship between feed current and cutting force
Fig. 12 Relationship between the cutting force and the current (1,273 rpm, Feed rate 254.6 mm/min)
Fig. 13 Relationship between the cutting force and the current
Fig. 14 Relationship between the cutting force and the current
Cutting Force Estimation Using Feed Motor Drive Current in Cutting Process Monitoring

Doosan nx5500Ⅱ feed axis servo motor specifications (Fanuc αiF 22/3000-B)

Parameter Value Unit
Continuous torque (At low speed) 22.0 Nm
Maximum speed 3,000 m-1
Torque constant 1.2 Nm/A (rms)
Static friction 1.2 Nm
Table 1 Doosan nx5500Ⅱ feed axis servo motor specifications (Fanuc αiF 22/3000-B)