extent in planer and shaper work Tool bits are available
amount of vibration. This toolholder is particularly
in different sizes and are hardened and cut to standard
good for use with formed cutters, which have a tendency
to chatter and dig into the work.
lengths to fit the toolholders. The toolholders that you
will most commonly use are described in the following
5. Extension toolholders are adapted to cut internal
keyways, splines, and grooves on the shaper. You can
adjust the extension arm of the holder to change the
1. Right-hand, straight, and left-hand toolholders
exposed length and the radial position of the tool.
used in most common shaper and planer operations.
Chapter 5 contains procedures used to grind shaper
2. Gang toolholders especially adapted to surface
and planer tool bits for various operations.
large castings. With a gang toolholder, you make
multiple cuts with each forward stroke of the shaper.
Each tool takes a light cut and there is less tendency to
"break out" at the end of a cut.
3. Swivel head toolholders are universal, patented
Before beginning any job on the shaper, you should
holders that you can adjust to place the tool in various
thoroughly study and understand the blueprint or
radial positions. This feature allows you to convert the
drawing from which you are to work. In addition, you
swivel head toolholder to a straight, right-hand, or
should take the following precautions:
left-hand holder at will.
Make certain that the shaper is well oiled.
4. Spring toolholders have a rigid, U-shaped
spring that lets the holder cap absorb a considerable
Clean away ALL chips from previous work.