Talk:Lathe center

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[edit] Live or Revolving??

Their appears to be differing usage of the term live center or revolving. The claim has been made that a live center does not run in its own bearings, but instead is mounted in the spindle where it is free (live) to rotate. A search on the web using the two terms indicates that revolving centers may be a UK (british) term which could explain why live center is "free" to take an alternative meaning.

In Australia the term Live centre refers to a center running in its own bearings - Piper tools has been manufacturing live centres since around 1937, and still does as this listing shows. I've referenced this usage by pointing to the Fitting and Machining reference book used by Victorian apprentices since the 1980's and evolved from a series used since early 1970's. A search of The State Library of Victoria lists it as

Title:   Fitting and machining / general editor: Ron Culley.
Publisher/Date:         Collingwood, Vic. : TAFE Publications Unit, c1988.
Description:    xxxiv, 639 p. : ill. ; 29 cm.
        
Notes:  Previously published as 3 separate vols. ; repr. with minor corrections.
        Includes index.
Subject(s):     Machine-shop practice.
Other author(s):        Culley, Ron.
        Victoria. TAFE Publications Unit.
ISBN/ISSN:      0724138196 :
Status:         Available
Location:       Information Centre
        R
Call Number:    670.42 F56 (1988)

I've included the alternate meaning within the page but have requested a citation for it as I can't find one, nor am I familiar with the term, to know where to look — Graibeard ^(talk) 13:06, 12 July 2006 (UTC)

[edit] spring

i have seen spring centers being sold in several machining catalogues but am not sure what exactly they do. I think that this article should explain what they are and their use. —The preceding unsigned comment was added by Brandizle326 (talk • contribs) 00:41, 21 March 2007 (UTC).