Chatter Vibration of Lathe Tools : 1st Report, General Characteristics of Chatter Vibration

Experimental Investigation of Evolution Process of Nonlinear Characteristics from Chatter Free to Chatter

The vibration acceleration time history of the cutter holder was separated into three parts; namely, chatter free, transition and chatter processes. The reconstructed attractor and probability distribution of vibration acceleration time series were studied in order to observe the system’s behavior. The Lyapunov exponent andKolmogorov entropy were used to help judge the cutting state. Meanwhile,...

Investigation and Analysis of Chatter Vibration in Centerless Bar Turning Machine

Chatter vibrations are present in almost all cutting operations and they are the major obstacles in achieving desired surface finish. Chatter vibrations are the self excited vibrations, which has an adverse effect on surface roughness, dimensional accuracy of the machined components. This paper investigates the occurrence of regenerative chatter vibrations in centerless bar turning operation. T...

Study and Determination of the Variables More Influents in the Surface Roughness of Slim Pieces Machined on a Lathe under Self Excitation Chatter Vibration

ABSTRACT The machining of slim pieces is affected by the chatter phenomenon. In this paper a study of the factors that influence the surface roughness of slim pieces fabricated on a lathe under self-excitation chatter vibration is presented. The purpose of the study is to determine which are the variables more influents in the process. For this study a novel analytical model for predicting the ...

Chatter - Causes and Solutions

Data, tools and resources for mining social media drug chatter

Social media has emerged into a crucial resource for obtaining population-based signals for various public health monitoring and surveillance tasks, such as pharmacovigilance. There is an abundance of knowledge hidden within social media data, and the volume is growing. Drug-related chatter on social media can include user-generated information that can provide insights into public health probl...