Receptance Coupling for High-Speed Machining Dynamics Prediction

Published

February 1, 2003

Author(s)

T L. Schmitz, Timothy J. Burns

Abstract

We apply receptance coupling techniques to predict the tool-point frequency response for high-speed machining applications. Building on early work of Duncan, Bishop and Johnson, and more recent work of Ewins, et al., we develop an analytic expression for the frequency response at the free end of the milling cutter from: 1) an analytic model of the tool; 2) an experimental measurement of the holder/spindle sub-assembly; and 3) a set of empirical connection parameters. These parameters are extracted from a single measurement of the tool/holder/spindle assembly at a known tool overhang length using nonlinear least squares estimation. The assembly model can then be used to predict changes in the tool-point receptance for setup variations, such as tool length. The resulting tool-point frequency response is used to calculate the associated stability lobe diagram, which defines regions of stable and unstable cutting zones as a function of chip width and spindle speed and is used to select appropriate machining parameters. A description of the receptance coupling method, as well as a discussion of the system model and selected connection parameters, are provided. Extensive experimental results are also presented.

Proceedings Title

Proceedings of IMAC-XXI: A Conference and Exposition on Structural Dynamics

Volume

Kissimmee, Fl

Conference Dates

February 3-6, 2003

Conference Location

Paper 19

Conference Title

International Modal Analysis Conference (IMAC XXI)

Pub Type

Conferences

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Keywords

machining dynamics, modal analysis, receptance cupling, tool chatter, tool tuning

Citation

Schmitz, T. and Burns, T. (2003), Receptance Coupling for High-Speed Machining Dynamics Prediction, Proceedings of IMAC-XXI: A Conference and Exposition on Structural Dynamics, Paper 19, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50702 (Accessed May 10, 2024)