Troubleshooting - JPW Promac SX-823DGVI Operating Instructions Manual

13. Troubleshooting

This chapter lists the probable faults and malfunctions that could occur while the machine is being used and suggests possible
remedies for solving them.
13.1 Blade and cut diagnosis
FAULT
Tooth Breakage
PROBABLE CAUSE
Too fast advance
Wrong cutting speed
Wrong tooth pitch
Chips sticking onto teeth and in
the gullets or material that gums
Defects on the material or material
too hard
Ineffective gripping of the part in
the vise
The blade gets stuck in the material
Starting cut on sharp or irregular
section bars
Poor quality blade
Previously broken tooth left in the
cut
Cutting resumed on a groove
made previously
Vibrations
18
REMEDY
Decrease advance, exerting less cutting
pressure. Adjust the braking device.
Change speed and/or type of blade.
See chapter on "Material classification
and blade selection", in the section
Blade selection table according to
cutting and feed speed.
Choose a suitable blade. See Chapter
"Material classification and blade
selection".
Check for clogging of coolant drain
holes on the blade-guide blocks and
that flow is plentiful in order to facilitate
the removal of chips from the blade.
Material surfaces can be oxidized or
covered with impurities making them,
at the beginning of the cut, harder that
the blade itself, or have hardened
areas or inclusions inside the section
due to productive agents used such as
casting sand, welding wastes, etc.
Avoid cutting these materials or in a
situation a cut has to be made use
extreme care, cleaning and remove
any such impurities as quickly as
possible.
Check the gripping of the part.
Reduce feed and exert less cutting
pressure.
Pay more attention when you start
cutting.
Use a superior quality blade
Accurately remove all the parts left in.
Make the cut elsewhere, turning the part.
Check gripping of the part.