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Appendix A: Factors Affecting Cut
Quality
The quality of your cut can vary from superb to poor depending on many factors. If your TigerSaw
cut quality is poor, there are many places to look for the cause of this problem. Sometimes the cause
of inferior cut quality is quite simple. Other times it can be caused by several conditions in combination.
Every component part in the energy transmission line will affect saw cut quality.
Cutting speed and feed rate
Various materials will require minor adjustments in both cutting speed and feed rate to achieve opti-
mal cut quality. Not only rotation speed of the saw blade, but also speed of activation and retraction
(return) of the saw lift mechanism, will affect cut quality.
When cutting metals, titanium tube stock for example, a variation in blade speed as little as 1rpm
can make a significant difference in quality. When the blade cuts through a piece of material, the teeth
generate heat as they remove the material. Slowing the blade speed reduces the heat, but the cutting
rate is too slow to be economical in a production application. If the blade speed is too fast, the heat
generated leads to premature dulling of the tool. The chips produced during the cutting process must
be extracted at the correct rate or they might stick in the gullets of the teeth. This results in a loss of
cutting efficiency, which in turn increases heat build up, causing galling as well as shorted blade life.
While cutting fluids and the correct tool pitch are important factors, finding the correct blade speed is
essential for cutting.
Material straightness and internal tension
Some materials, particularly wood, but also metals can be subject to straightness problems and
internal tension, making cutting difficult. Stock with these characteristics can close in around the saw
blade during a cut, resulting in poor cuts. There is not much that can be done about this, as it is a
material characteristic.
Saw blade condition and type
The condition and type of saw blade used will definitely affect the quality of the cut. Being out of
balance, out of round, dull on one side or being improperly tensioned will cause inferior cut qual-
ity.Using the wrong type of saw blade for the job will also cause problems.
Saw Teeth and Gullets
Saw tooth profile and the straightness of the tooth grind will affect cut qual-
ity. Also, take into consideration the size and shape of the gullets. They deter-
mine the amount of waste material that passes through the saw. Consider
also the correct tooth shape for your materials. The angle and design of a
tooth factors into blade speed, cut quality and the type of material it can cut.
Hook Angle
The greater the hook angle, the more the blade wants to climb into the
material and the rougher the cut will be. The smaller the hook angle, the more
force it takes to push the blade into the material. For crosscutting saw blades,
10 to 15 degrees is a common hook angle.
Содержание TigerSaw 1000
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Страница 8: ...5 TigerSaw Cap Guard TigerSaw Guard Back ...
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Страница 10: ...7 TigerSaw Blade Access Door In Feed and Out Feed Table ...
Страница 11: ...8 Pusher Foot ...
Страница 15: ...12 1 Assemble table legs ...
Страница 17: ...14 5 Attach the back fence to the out feed table 6 Attach the material staging tubes to the in feed table ...
Страница 24: ...21 7 Attach the Printer Stand M8 X 35 ...
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