CYLINDER HEAD FIXTURE HINTS
Cutter Speeds: Cast
iron, about 80-135 RPM with the carbide cutter. Note:
If using high speed steel; run about 80 surface feet per
using aluminum, run around 200 RPM.
15/8” per minute table feed. Experiment
with different speeds and feeds to get desired finish.
(The faster the table feed, the rougher the finish will be.)
Depth of Cut:
more than .010 is recommended in cast iron.
Finish cut should always be .002 - .003.
Direction of Cut:
cut from the right to the left (if you are facing the machine).
only one bolt in the rear fixture to attach the head to the fixture.
If you install two bolts in the fixture, they will bind and
pivot, making lengthwise leveling impossible.
the cutter is dragging on the back side of the cut, tilt the head very
slightly (less than 1 degree) to eliminate the problem.
Leveling the Head:
either a very good level, or better yet, a dial indicator to level the
head. We have found it much
easier to level the head lengthwise first and then use the rear support
hand wheel to raise the head crosswise until level.
Use an end mill holder (not a collet) to hold the flycutter.
Lock the spindle all the way up (feed the table up for desired
depth). Always use a sharp
tool – dull tools can cause many problems including chattering and a