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터치 트리거 프로브를 이용한 수평형 4축 공작기계의 위치오차 측정

Measurement of Location Errors in a Horizontal 4-axis Machine Tool using a Touch Trigger Probe

Journal of the Korean Society for Precision Engineering 2019;36(8):745-752.
Published online: August 1, 2019

1 한양대학교 기계공학과

2 한국기계연구원 초정밀시스템연구실

1 School of Mechanical Engineering, Hanyang University

2 Department of Ultra-Precision Machines and Systems, Korea Institute of Machinery and Materials

#E-mail: gyungho@kimm.re.kr, TEL: +82-42-868-7105
• Received: March 15, 2019   • Accepted: May 21, 2019

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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  • Sequential Measurement of Position-independent Geometric Errors in the Rotary and Spindle Axes of a Hybrid Parallel Kinematic Machine
    Seung-Han Yang, Dong-Mok Lee, Hoon-Hee Lee, Kwang-Il Lee
    International Journal of Precision Engineering and Manufacturing.2020; 21(12): 2391.     CrossRef

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Measurement of Location Errors in a Horizontal 4-axis Machine Tool using a Touch Trigger Probe
J. Korean Soc. Precis. Eng.. 2019;36(8):745-752.   Published online August 1, 2019
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Measurement of Location Errors in a Horizontal 4-axis Machine Tool using a Touch Trigger Probe
J. Korean Soc. Precis. Eng.. 2019;36(8):745-752.   Published online August 1, 2019
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Measurement of Location Errors in a Horizontal 4-axis Machine Tool using a Touch Trigger Probe
Image Image Image Image Image Image Image Image
Fig. 1 Layout of a horizontal 4-axis machine tool
Fig. 2 Location errors in 4-axis machine tool
Fig. 3 Measurement principle of location errors
Fig. 4 Error vector between the sphere artifact and the probe
Fig. 5 Experimental setup for horizontal 4-axis machine tool
Fig. 6 Measurement points for calculating the center position of a sphere artifact
Fig. 7 Squareness error compensation method
Fig. 8 Reference coordinate system changed by the compensation
Measurement of Location Errors in a Horizontal 4-axis Machine Tool using a Touch Trigger Probe

Location errors in a 4-axis machine tool

Symbol Explanation
α YZ Squareness error between Z and Y-axis
β ZX Squareness error between X and Z-axis
γ YX Squareness error between X and Y-axis
α BZ Squareness error between B and Z-axis
γ BX Squareness error between B and X-axis
δ BX Offset error of B-axis in X-direction
δ BZ Offset error of B-axis in Z-direction

Experimental results

R Δwz H 1 H 2 αYZ βZX γYX αBZ γBX δBX δBZ
unit mm mm mm mm μrad μrad μrad μrad μrad μm μm
Exp.1 218.0956 -1.3493 241.7629 741.7414 -17.06 -10.59 -0.44 -4.56 -8.96 2.86 -7.11
Exp.2 218.0955 -1.3495 241.7634 741.7422 -17.49 -10.43 -0.73 -5.01 -9.13 3.33 -7.34
Exp.2 218.0955 -1.3492 241.7633 741.7432 -17.43 -9.36 -1.10 -4.90 -10.18 2.76 -7.24
Avg. 218.0955 -1.3493 241.7632 741.7423 -17.33 -10.13 -0.76 -4.82 -9.42 2.98 -7.23
2sigma ±0.0001 ±0.0004 ±0.0006 ±0.0018 ±0.47 ±1.34 ±0.66 ±0.47 ±1.32 ±0.61 ±0.23

Comparison the experiment results before and after compensation

αYZ βZX γYX αBZ γBX δBX δBZ
Before -17.33 -10.13 -0.76 -4.82 -9.42 2.98 -7.23
After 6.91 5.36 6.15 -1.09 -1.86 1.28 3.14
Table 1 Location errors in a 4-axis machine tool
Table 2 Experimental results
Table 3 Comparison the experiment results before and after compensation