Chatter Happy Ponies
Chatter may refer to: * Chatter (machining) or machining vibrations * the undesirable phenomenon of oscillations having finite frequency and amplitude, in sliding mode control * Contact bounce or chatter, a common problem with mechanical switches and relays * Chatter (signals intelligence), the volume of communication to or from suspected terrorists or spies * Project CHATTER (1947–53), a U.S. Navy truth serum project * Chatter (software), enterprise social networking software * Small talk See also * Chat (other) *Chattering classes, a politically active, socially concerned and highly educated section of the "metropolitan middle class" *Chatter mark, an indication of glacial erosion *Chatter Telephone The Chatter Telephone is a pull toy for toddlers 12 to 36 months of age. Introduced in 1961 by the Fisher-Price company as the "Talk Back Phone" for infants and children, which was updated to the name Chatter Telephone in 1962, is a roll along pu ...

Chatter (machining)
Machining vibrations, also called chatter, are the relative movement between the workpiece and the cutting tool. The vibrations result in waves on the machining, machined surface. This affects typical machining processes, such as turning, milling machine, milling and drilling, and atypical machining processes, such as grinding (abrasive cutting), grinding. A chatter mark is an irregular surface flaw left by a wheel that is out of true in grinding or regular mark left when turning a long piece on a lathe, due to machining vibrations. As early as 1907, Frederick Winslow Taylor, Frederick W. Taylor described machining vibrations as the most obscure and delicate of all the problems facing the machinist, an observation still true today, as shown in many publications on machining. The explanation of the machine tool regenerative chatter was made by Tobias. S. A. and W. Fishwick in 1958, by modeling the feedback loop between the metal cutting process and the machine tool structure, and c ...
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