LATHE OPERATIONS - OD1645 - LESSON 1/TASK 1
to the lathe toolpost or mounted in an open side toolpost to provide rigid
support for the bit.
(b) Straight-Shank Cutting Toolholder.
The straight-shank cutting
toolholder (figure 9 on the following page) may be used to support round-
nose turning cutter bits, right-hand and left-hand turning cutter bits, and
thread cutter bits.
The holder is made of forged steel and contains a
hardened steel setscrew for locking the cutter bit in place.
(c) Right-Hand and Left-Hand Offset Cutting Toolholder. The right-hand
and left-hand offset cutting toolholders (figure 9) are designed to support
right-hand and left-hand facing cutter bits which require that the bit be
supported at an angle to the workpiece axis. The holder has a setscrew for
locking the cutter bit in place.