Repeatability Analysis on the Tool Point Dynamics for Investigations on Uncertainty in Milling Stability

Published

November 11, 2007

Author(s)

Kang-Jae Lee, M A. Donmez

Abstract

Stability analysis is needed to maximize milling performance while avoiding chatter. However, such an analysis is time-consuming, requiring the use of sophisticated instrumentation, and has significant level of uncertainty, which impedes the widespread use by industry. A main source of uncertainty is believed to be the changes in dynamics of the tool-holder-spindle system during the milling operation. This study investigates the variation in the tool point dynamics reflecting the dynamics of the tool-holder-spindle system and associated machining stability. The investigation focuses on the effects of the conditions generated by typical milling operations, such as tool changes and spindle warm up. The results of analyses demonstrate the necessity of continuous updates of the tool point dynamics during milling process by in-situ measurements to minimize uncertainty in evaluation of machining stability.

Report Number

823028

Conference Dates

November 11-15, 2007

Conference Location

Seattle, WA

Conference Title

2007 ASME International Mechanical Engineering Congress & Exposition (IMECE2007)

Pub Type

Conferences

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Keywords

Tool Point Dynamics, FRF, Chatter, Machining Stability, Uncertainty, Coefficient of Variation, In-situ Measurement

Citation

Lee, K. and Donmez, M. (2007), Repeatability Analysis on the Tool Point Dynamics for Investigations on Uncertainty in Milling Stability, 2007 ASME International Mechanical Engineering Congress & Exposition (IMECE2007), Seattle, WA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=823028 (Accessed December 26, 2024)