BANDSAW OPERATIONS - OD1646 - LESSON 1/TASK 1
tension as that used for a 1/8 inch wide carbon saw band. Too much tension
will cause the file segment rivets to break when heavy filing pressure is
applied.
While it might seem, at first, that better filing results are
obtained with excess tightening of the file band, this will not be the case
in the long run. Most accurate filing can be obtained with the light band
tension.
Check the file band to see that it is in alignment and will pass freely over
the channel in the file guide.
Then shift the machine into low gear and
start the drive motor. Observe the file band (figure 32) to be sure that it
is tracking properly.
FIGURE 32.
TRACKING THE FILE BAND.
CAUTION
File segment must travel with the riveted section
down; if not, injury to operator and damage to file
band and bandsaw will occur.
(8) The Filing Operation.
During the filing operation, the correct
combination of speed and pressure will produce curled chips.
The best
filing speeds are between 80 and 150 fpm. For internal filing, unlock the
band and run it through the opening in the workpiece; then reassemble the
band. Keep the files clean. Do not file when the
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