LATHE OPERATIONS - OD1645 - LESSON 1/TASK 1
TABLE 1.
CLEARANCE AND RAKE ANGLES FOR
LATHE CUTTER BITS.
the bit may be fed from right to left, although it is often ground without
any side rake so that the feed may be in either direction.
(5) Right-Hand Facing Cutter Bit.
The right-hand facing cutter
bit is
intending for facing on right-hand shoulders and the right end
of the
workpiece. The cutting edge is on the left-hand side of the bit,
and the
nose is sharp to permit machining a square corner. The direction
of feed
for the facing bit should be away from the axis of the workpiece.
(6) Left-Hand Facing Cutter Bit. The left-hand facing cutter bit is just
the opposite of the right-hand facing cutter bit; it is intended for facing
the left side of the shoulders.
(7) Parting Cutter Bit. The parting cutter bit has its principal cutting
edge at the end. Both sides must have sufficient clearance to prevent
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