Main Operating Problems And Remedies - Walter ICECUT100 Manuel D'utilisation

14) MAIN OPERATING PROBLEMS AND REMEDIES

Problem
1) Magnetic Material being cut may be too thin for efficient
base won't holding.
hold effectively Swarf or dirt under magnet.
Irregularity on magnet contact or work-piece.
Insufficient current going to magnet during
drilling cycles.
2) Cutter skips Magnetic base is not holding effectively.
out of centre- Worn arbor bushing and/or ejector collar.
punch mark at Too much feed pressure at start of cut.
initiation of cut Cutter is dull, worn, chipped or incorrectly
sharpened.
Poor centre-punch mark; weak pilot spring;
pilot not centred in centre-punch mark.
Worn or bent pilot, worn pilot hole.
Loose bolts on motor bushing support bracket,
main casting or loose gib adjusting set screws.
Loose bolts on motor bushing support bracket,
main casting or loose gib adjusting set screws.
3) Excessive Incorrectly re-sharpened, worn or chipped
drilling cutter.
pressure Coming down on swarf lying on surface of
required work-piece.
Gibs out of adjustment or lack of lubrication.
Swarf accumulated (packed) inside cutter.
4) Excessive Steel swarf or dirt under cutter.
cutter breakage Incorrectly re-sharpened or worn cutter.
Cutter skipping.
Slide needs adjustment.
Cutter not attached tightly to arbor.
Insufficient use of cutting oil or unsuitable type
of oil.
Incorrect speed
5) Excessive Incorrectly re-sharpened cutter.
cutter wear Insufficient or spasmodic cutting pressure.
Cause
12
Remedy
Attach an additional piece of metal under the
magnet, or mechanically clamp magnetic base
to work-piece.
Clean magnet.
Use extreme care; file any imperfections flush
to surface.
Confirm power supply and output from control
unit, check supply cable.
See POINT 1) above.
New arbor bushing is needed.
Light pressure only is needed until a groove is
cut. The groove then serves as a stabilizer.
Replace or re-sharpen. Sharpening service is
available.
Improve centre-punch and/or replace worn
parts
Replace part or parts
Adjust where necessary
Re-sharpen or replace.
Take care not to start a cut on swarf.
Adjust setscrews and lubricate.
Clear cutter.
Remove cutter, clean part thoroughly and
replace.
Always have a new cutter on hand to refer to
for correct tooth geometry, together with
instruction sheet.
See POINT 2) above.
Tighten screws supporting the slide.
Retighten.
Inject oil of light viscosity into the coolant-
inducing ring and check that oil is being
metered into cutter when pilot is depressed. If
not, check pilot groove and arbor internally for
dirt or apply oil externally. (Even a small
amount of oil is very effective).
Ensure correct gear is use for the cutter.
Refer to instructions and a new cutter for
proper tooth geometry.
Use sufficient steady pressure to slow the drill
down. This will result in optimum cutting speed
and chip load.