Mechanical Defects - Bomar Practix Automatic Series Operating Instructions Manual

5.1.

Mechanical defects

Problem
1. Slanting cut -
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2. The cut is not cut -
upon desired angle
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3. Short lifetime of the -
saw band
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Possible causes
Wrongly adjusted hard metal guides.
Worn hard metal guides.
Wrongly adjusted cubes of the saw
band guiding.
Worn bearings of the saw band
guiding.
Wrongly adjusted swarf brush.
Worn swarf brush.
Insufficient saw band stretching.
Wrongly chosen tooth system of the
saw band.
Worn saw band.
Wrongly balanced roller conveyor.
Dirty feeding board.
Guiding arm and guiding cube are
loosened.
Guiding arm and cube are too far from
the material.
Too fast cutting rate.
Unexpected oscillation in material
quality.
Securing lever is loosened.
Set angle does not match the cut
angle.
Insufficient saw band stretching.
Guiding arm and guiding cube are
loosened.
Dirt between material and clamping
jaw.
Insufficient saw band stretching.
Worn swarf brush.
Wrongly adjusted swarf brush.
Over stretched saw band
Wrongly adjusted hard metal guides.
Worn hard metal guides of the saw
band.
Repair
Set according to the chapter „Machine service"
Replace to the chapter „Worn pieces
replacement"
Set according to the chapter „Machine service"
Replace according to the chapter „Worn pieces
replacement"
Set according to the chapter „Machine service"
Replace according to the chapter „Worn pieces
replacement"
Rise the saw band stretching and set the limit
switch.
Replace the saw band and keep the instructions
of manufacturer on new saw band choice.
Replace the saw band.
Set the roller conveyor.
Cleanse the feeding board from debris, chip and
residue material.
Clamp the guiding arm.
Set the guiding cube to the material.
Lower the material feeding speed.
Set the cut and feeding speed to the relevant
material.
Check the securing lever efficiency and carry out
its adjustment according to chapter „Machine
service".
Check the angle adjustment with a protractor
and possibly set it according to chapter
„Machine service".
Stretch the saw band and set the limit switch
according to chapter „Machine service".
Fasten the guiding arm and the cube.
Cleanse the material and mating jaw.
Raise the tightening of the saw band set the
scanner of saw band tightening according to
chapter „Machine service".
Check the swarf brush condition and replace it in
case of excessive use as described in chapter
„Worn pieces replacement"
Check swarf brush adjustment, set it according
to chapter „Machine service"
Lower stretching of the saw band and set the
limit switch of the saw band stretching
according to chapter „Machine service"
Check the adjustment of the hard metal guides
and carry out adjustment as described in chapter
„Machine service"
Check the condition of the hard metal guide and
if it is too worn, replace hard metal guides
according to chapter „Worn pieces replacement"
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