Machinery Repairman

A.
B.
C.
D.
E.
Figure 7-32.—Double-angle cutter.
Two-flute single-end
Two-flute double-end
Three-flute single-end
Multiple-flute singleend
Four-flute double-end
Figure 7-33.—End mill cutters.
7-22
angle of 90° to the cutter axis and the other usually at
45°, 50°, or 80°.
The double-angle cutter (fig. 7-32) has two
cutting faces, which are at an angle to the cutter axis.
When both faces are at the same angle to the axis, you
obtain the cutter you want by specifying the included
angle. When they are different angles, you specify
the angle of each side with respect to the plane of
intersection.
END MILL CUTTERS.—End mill cutters may
be the SOLID TYPE with the teeth and the shank as
an integral part (fig. 7-33), or they may be the
SHELL TYPE (fig. 7-34) in which the cutter body and
the shank or arbor are separate. End mill cutters have
teeth on the circumference and on the end. Those on
the circumference may be either straight or helical
(fig. 7-35).
F. Two-flute ball-end
G. Carbide-tipped, straight flutes
H. Carbide-tipped, right-hand helical flutes
I. Multiple-flute with taper shank
J. Carbide-tipped with taper shank and helical flutes