Paper Title:
Investigations of Formation of Chatter in a Non-Wavy Surface during Thread Cutting and Turning Operations
  Abstract

An attempt has been made to investigate the chatter formation during two machining operations namely, turning and thread cutting on a non-wavy surface of plain carbon steel with a view to observing the formative mechanisms of chatter. Investigations have been conducted on the chips and common types of discreteness in the form of serrated/saw teeth have been identified. Mechanisms of formation of these teeth have been studied and the frequencies of their formation have been determined at different cutting speeds. The different modes of the vibrating components have been extracted by modal analysis and the vibration responses during cutting conditions have also been recorded using an online data acquisition system. All the experiment were conducted on a no wavy surface and thread cutting was conducted on nascent surface, the existence of chatter observed during the experiments prove that the regenerative effect from the waviness of the previous pass, as postulated by the ‘Regenerative Chatter Theory’ is not correct in explaining the primary cause of chatter during metal cutting. The analysis of amplitude of chatter during machining indicates that noticeable chatter appears in the system when the chip serration frequency is equal to or integer multiple of the prominent natural frequency of the system components.

  Info
Periodical
Advanced Materials Research (Volumes 83-86)
Edited by
M. S. J. Hashmi, B. S. Yilbas and S. Naher
Pages
637-645
DOI
10.4028/www.scientific.net/AMR.83-86.637
Citation
M. A. U. Patwari, A.K.M. Nurul Amin, W. F. Faris, M.H. Ishtiyaq, "Investigations of Formation of Chatter in a Non-Wavy Surface during Thread Cutting and Turning Operations", Advanced Materials Research, Vols. 83-86, pp. 637-645, 2010
Online since
December 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Mohammed Anayet Ullah Patwari, A.K.M. Nurul Amin, Waleed Fekry Faris
Abstract:Experimental investigations have been conducted on the chips and common types of discreteness in the form of serrated saw teeth (primary or...
1989
Authors: Anayet Ullah Patwari, A.K.M. Nurul Amin, Waleed Fekry Faris, Marian Azhari, S. Farahain
Abstract:Chatter is an unwanted but sometimes unavoidable phenomenon in machining. The term defines the self-excited violent relative dynamic motion...
1174
Authors: A.K.M. Nurul Amin, Syidatul Akma Sulaiman, Muammer Din Arif
Chapter 15: Materials Processing Technology
Abstract:Chatter is defined as the self-excited violent relative dynamic motion between the cutting tool and work piece. Chatter is detrimental to all...
2206
Authors: Syidatul Akma Sulaiman, A.K.M. Nurul Amin, M.D. Arif
Chapter 1: Material Removal Process
Abstract:Machining of metals is generally accompanied by a violent relative vibration between work and tool, known as chatter. Chatter is undesirable...
15
Authors: Syidatul Akma Sulaiman, A.K.M. Nurul Amin, M.D. Arif
Chapter 1: Material Removal Process
Abstract:One of the most challenging issues in machining process is understanding the chatter phenomenon. Chatter mechanics is still not fully...
32