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Compensation of tool deflection in micromilling using workpiece holder control device

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Abstract

This paper presents a real-time tool deflection compensation technique to improve micromilling machining accuracy. Lateral and axial errors of the cutter location (CL) caused by tool deflection were estimated using the cutting force and compensated by applying an additional feed to the workpiece that is equivalent to the estimated CL errors. To evaluate the proposed method, a workpiece holder comprising a three-axis stage and a tool dynamometer was installed on the work table of a machine tool. A proportional derivative (PD) position controller with a model-based tool deflection estimator was designed and implemented on a real-time computer to control the workpiece holder. Lateral and axial machining errors in side milling and radii errors in circular slot milling are discussed to demonstrate the effect of tool deflection compensation.

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Authors and Affiliations

  1. Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon, 305-343, South Korea

    Segon Heo

  2. Department of Mechanical Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 120-749, South Korea

    Mingyu Lee, Seong Hyeon Kim, Wonkyun Lee & Byung-Kwon Min

Authors
  1. Segon Heo
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  2. Mingyu Lee
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  3. Seong Hyeon Kim
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  4. Wonkyun Lee
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  5. Byung-Kwon Min
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Correspondence to Byung-Kwon Min.

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Heo, S., Lee, M., Kim, S.H. et al. Compensation of tool deflection in micromilling using workpiece holder control device. Int. J. Precis. Eng. Manuf. 16, 1205–1208 (2015). https://doi.org/10.1007/s12541-015-0155-5

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  • DOI: https://doi.org/10.1007/s12541-015-0155-5

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