big benefits A
32 | CUTTING TOOLS | Turning
By Kip Hanson
Any machinist worth his or her salt knows one of the cardinal rules of
turning: keep the cutting forces directed towards the spindle. Not only
does this help prevent the unpleasantness that comes with tearing a
workpiece out of the chuck, it also pushes the turning tool against the
toolholder and load-bearing surfaces within the turret mechanism. Even
without a catastrophic event, failure to do so places undue stress on the
machine tool itself, and may even shorten its life.
Not necessarily. Compared to machine tools from 20 years ago, today’s
CNCs are tough. Bearings are stronger, slideways more robust, positioning
systems more accurate. Isn’t it only logical then to reconsider some of the
tried and true paradigms of years past, tossing out the old ways of doing
things like a bad habit?
www.shopmetaltech.com august 2017
no need to break convention: primeturning can also
be used to face and turn in traditional directions.
IMAGE: SANDVIK COROMANT