8.2 BREAKAGE OR EXCESSIVE DULLING OF BLADES
1.
Select the proper blade and spindle speed for the material being cut.
For recommendations,
REFER TO SECTION 6.3.
2.
Always break in the blade before you start normal cutting. New blades have a very
sharp edge. Draw the blade slowly through the first few cuts.
3.
Do not apply excessive down pressure on the work piece. Excessive down pressur
will cause the teeth to remove too large of a chip, resulting in premature dulling
or breakage.
4.
Use only P/N 075760, (SYNCON-2) mixed in a ratio of one part coolant to seven parts
water, as recommended in SECTION 4.7.
5.
Keep the blade flange, the face of the blade spindle and the blade clean and free from
nicks. Any contamination or nicks on the flange, spindle or the blade will cause the
blade to run out of alignment. It is VERY IMPORTANT to keep everything clean
when changing blades.
6.
Always remove the back lash when installing a blade. For instructions, REFER TO
SECTION 6.1. Also, check the condition of the drive pins when replacing the blade.
If the drive pins are broken or worn, replace them.
7.
Any of the above problems may cause a condition known as pick-up. Pick-up is
caused when the material being cut adheres itself to the sides of the blade. When
pick-up is present, you will feel a jerking or vibration in the saw head while cutting.
This is caused by the blade being pinched as it goes through the material where the
pick-up is present, which causes it to get worse. Also, there will be a much rougher
finish on the cut due to the pick-up making a spot on the blade "thicker". Pick-up can
be removed by using a fine hone stone or a very fine file. When removing pick-up,
care must be taken not to remove any part of the blade.
8. After the pick-up has been removed, review the above items to determine what
caused the problem. And keep in mind, once the blade has pick-up, even if it's
removed with a stone or file, it tends to get pick-up in the same spot. So it is often best
to have the blade resharpened. Even better than that is to take every precaution to
avoid getting pick-up in the 1st place.
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Страница 10: ...FIGURE 1 A B C G H I F VISE D E FIGURE 1 Page 9 A B C G H I F VISE D E...
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