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Home > Ordnance Documents and other related manuals > > figure 11 Terms Applied to Single Point Cutter Bits
Tantalum carbide and Titanium Carbide
e. Common Types of Cutter Bits.

Lathe Operations
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LATHE OPERATIONS - OD1645 - LESSON 1/TASK 1
FIGURE 11.
TERMS APPLIED TO SINGLE-POINT CUTTER BITS.
(5) Base.
The base is the bottom surface of the shank of the cutter bit.
(6) End.
The end of the cutter bit is the near-vertical surface which,
with the side of the bit, forms the profile of the bit.
The end is the
trailing surface of the cutter bit when cutting.
(7) Heel.
The heel is the portion of the cutter bit base immediately
below and supporting the face.
c.  Angles of Cutter Bits.  The successful operation of the lathe and the
quality of work that may be achieved depend largely on the angles that form
the cutting edge of the cutter bit (figure 11).  The profiles of the bit may
be of any shape so long as the cutting edge is properly shaped.  The five
angles are used to define the cutting edge, to prevent supporting surfaces
of the bit from rubbing against the workpiece, and to establish a path for
the chips being removed.
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