Flexure-Based Dynamometer for Vector-Valued Milling Force Measurement
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IFT – Institute for Production Engineering and Photonic Technologies, TU Wien, Austria
University of Tennessee, Department of Mechanical, Aerospace, and Biomedical Engineering, United States
Department of Mechanical Engineering, University of California, Berkeley, United States
Submission date: 2023-01-16
Final revision date: 2023-02-13
Acceptance date: 2023-02-14
Online publication date: 2023-02-16
Publication date: 2023-04-12
Corresponding author
David Leitner   

IFT – Institute for Production Engineering and Photonic Technologies, TU Wien, Getreidemarkt 9 / 311, 1060, Wien, Austria
Journal of Machine Engineering 2023;23(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.
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