Lathes Page: 28
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16 AIR CORPS
c. Collet chucks are small, accurately made chucks of the split
shell type. They are used to hold work that has smooth, round, ex-
ternal surfaces and should be used only for light machining opera-
tions on work that fits them accurately. Collets may also be ob-
tained for holding square, hexagonal, and octagonal work. As shown
in figure 22 the collet (A) is held in a special adapter (B) which is
fitted into the lathe spindle. The collet is clamped onto work by
action of the threaded draw bar (C) which is operated through the
spindle by the hand wheel (D).
i > D) )C)B) (A)
Ft;u; i.: 22.-Collet chU.lk nassemi)ly.
(0 Mounted in headstock spindle.
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United States. Army. Air Corps. Lathes, book, November 29, 1940; Washington, D.C.. (digital.library.unt.edu/ark:/67531/metadc96655/m1/30/: accessed May 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.