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1 Journal of Machine Engineering

1 2023

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Flexure-based dynamometer for vector-valued milling force measurement

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Ramsauer C. , Leitner D. , Habersohn C. , Schmitz T. , Yamazaki K. , Bleicher F.

Journal of Machine Engineering

2023

tom Vol. 23, No. 1

47--56

Variation in cutting forces with cutting parameter selection, tool geometry, and wear status plays an important role for milling process evaluation and modeling. While piezoelectric force measurement is commercially available, it is often considered a precise but expensive method. This paper presents a novel solution for vector-valued cutting force measurement. The table-mounted, flexure-based kinematics provide three degrees of freedom that are used to measure the in-process milling force vector components in the working plane by low-cost optical sensors. Based on analytical models and FEM analysis, an appropriate design was derived. The assembly and testing of the developed dynamometer are presented. A test setup based on a machining center was used for the system evaluation and the data are compared to the forces measured by a commercially available, piezoelectric cutting force dynamometer.