Results 211 to 220 of about 1,458 (251)

An intelligent sensor for detection of milling chatter

Journal of Intelligent Manufacturing, 1994
In this paper, a new real-time sensor system has been developed to detect chatter in milling operations. In the developed sensor system, a pattern recognition technique based on an unsupervised neural network using the adaptive resonance theory (ART) is adopted for detection of milling chatter.
Tarng, Y.S., Chen, M.C.
openaire   +2 more sources

Detection and Suppression of Drilling Chatter

Journal of Dynamic Systems, Measurement, and Control, 1994
The paper presents a simple but effective method to detect and suppress chatter in drilling operations. Unlike conventional approaches, complex cutting dynamics in drilling operations do not need to model and analyze in this new approach. Chatter is detected when a large thrust force or torque variation is observed.
Tarng, Y.S., Li, T.C.
openaire   +1 more source

Detection of the onset of chatter vibration

Journal of Sound and Vibration, 1986
In a flexible manufacturing system or a fully automated machining system, the computer control system of the machine tools must be able to recognize and control the cutting states, particularly the unwanted ones. Chatter vibration being one of them, its onset needs to be detected.
Rahman, M., Ito, Y.
openaire   +1 more source

Method for chatter detection with standard PLC systems

Production Engineering, 2012
The aim of growing productivity together with increasing quality demands in machining leads to milling processes that are near their stability limits. The remaining stability reserves become smaller and the risk of unstable processing conditions like chatter increases.
Abele, Eberhard, Sielaff, T, Schiffler, Andreas   +2 more
openaire   +1 more source

Development of chatter detection in milling processes

The International Journal of Advanced Manufacturing Technology, 2012
The aim of this research is to develop an in-process detection of the chatter for the actual milling processes regardless of any cutting condition within the small data processing time by utilizing the dynamic cutting forces obtained during cutting. The proposed method introduces three parameters, which are calculated and obtained by taking the ratio ...
Somkiat Tangjitsitcharoen, Narongsak Pongsathornwiwat   +1 more
openaire   +1 more source

A New Method for Chatter Detection in Grinding

CIRP Annals, 2002
Abstract A new method for automatic chatter detection in outer-diameter grinding is proposed which exploits significant changes in grinding dynamics caused by the onset of chatter. The method is based on monitoring of a non-linear statistic called the coarse-grained entropy rate.
E. Govekar, A. Baus, J. Gradišek, F. Klocke, I. Grabec   +4 more
openaire   +1 more source

In-Process Detection of Chatter Threshold

Journal of Engineering for Industry, 1988
This investigation is an attempt to propose a method to determine the chatter threshold precisely so that a flexible manufacturing system can be materialized or a dynamic performance test criteria for a machine tool can be established. It has been found that the chatter threshold can be easily detected through the in-process measurement of the ...
openaire   +1 more source

In-process detection and suppression of chatter in milling

International Journal of Machine Tools and Manufacture, 1992
Abstract The use of a continuously variable spindle speed as a means of suppressing chatter in milling is investigated. A digital simulation model for dynamic milling is presented. The model includes runout, process damping and stiffness contributed by flank interference with and without tool wear, and spindle speed variation.
Y. Altintas, Philip K. Chan
openaire   +1 more source

Pattern recognition for on-line chatter detection

Mechanical Systems and Signal Processing, 1988
Abstract A pattern recognition strategy for on-line chatter detection was proposed and developed by analysing the acceleration signals from a milling operation. The components of the feature vectors were defined in terms of total power and dispersion of the dominant forced and chatter vibration modes extracted from linear stochastic models ...
CHO, DW, EMAN, KF
openaire   +2 more sources

Chatterbox: A vibration monitor to detect chattered sections at the ultramicrotome

Journal of Ultrastructure Research, 1973
The “chatterbox” is a device for amplifying the vibrations produced as thin sections are cut. With acceptable chatterfree sections a crunching noise is heard; chattered sections produce an audible squeal which is easily distinguished from crunch. With the device the microtomist can determine at the microtome when his sections are chattered, and can ...
C W, McCutchen, L W, Tice, J H, Luft
openaire   +2 more sources