کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
798139 903216 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of ultrasonic assisted machining (UAM) on regenerative chatter in turning
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Analysis of ultrasonic assisted machining (UAM) on regenerative chatter in turning
چکیده انگلیسی

Ultrasonic assisted machining (UAM) is an advanced technology for improving the machining process, especially for hard materials. This paper presents an experimental and theoretical study toward the effect of UAM on chatter. Theoretical explanation of the effect of UAM on chatter is not fully presented in the available literature yet. In this paper, considering fixed tool geometry, theoretical dynamic equations for UAM are represented. The approach is demonstrated by deriving dynamic formulation of UAM in turning, considering both turning equation and Merchants ultrasonic machining equations. A time domain analysis is fulfilled on each machining condition to verify whether it has a stable vibration or an unstable chatter vibration. Subsequently, an experimental setup is designed and manufactured to investigate UAM effect on regenerative chatter. Special conical shape for workpiece is designed to experimentally generate different points of stability lobe. The generated oscillation by a piezoelectric actuator is transferred, amplified, and concentrated on the tip of the tool by appropriate design of a cutting tool, which is vibrated in its bending mode. The obtained results are encouraging, and indicating good agreement between experimental and theoretical results.


► We derive dynamic formulation for ultrasonic assisted machining (UAM) in lathe.
► Experimental setup is designed and manufactured to study UAM effect on chatter.
► We propose special conical shape for workpiece to sketch stability lobes.
► We show numerically and experimentally that UAM has different effects on stability.
► The proposed equation can predict the effect of UAM on chatter occurrence.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 213, Issue 3, March 2013, Pages 418–425
نویسندگان
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