Lathes Page: 29
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) Mounted in tailstock spindle.
FIGURE 23.-Application of drill chuck.
d. The combination chuck is made with either three or four jaws
which can be moved either independently or in unison.
e. The magnetic chuck holds the work against its face by mag-
netic force. It is generally used when machining thin, flat sections.
f. The drill chuck is a small universal chuck that can be mounted
in either the headstock or tailstock spindle and is used to hold drills,
reamers, etc., as well as work of small diameter (fig. 23).
17. Face plates.-a. Desciption.-The face plate is a flat, round
plate provided with T-slots and is especially valuable in machining
holes that are to be accurately located in thin work. It screws onto
the lathe spindle and is used for holding work to be machined.
Angle plates may be bolted to the face plate and the work mounted
thereon. (See fig. 24.)
b. Use.-(1) The accuracy of the bearing surface of a face plate
is most important. Any unevenness of this surface should be re-
moved by taking a facing cut.
(2) Care should be exercised in clamping work to the face plate
so that neither the work nor the face plate will be sprung.
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United States. Army. Air Corps. Lathes, book, November 29, 1940; Washington, D.C.. (digital.library.unt.edu/ark:/67531/metadc96655/m1/31/: accessed August 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.