Tennsmith LM1010-2x, Руководство по обслуживанию, Страница: 12 / 41

11
Otherwise, crashing of the blades could result in severe
damage to the machine.
7
. Reposition the hold down assembly.
BACKGAUGE INFORMATION
The LM shear is fitted with a front operated back gauge as standard equipment. The
gauge was installed and calibrated at the factory and shipped intact mounted on the shear.
Inspect the gauge carefully to determine any possible movement or damage in transit.
The gauge has 30 inches of travel. To verify the back gauge was not disturbed during
shipping, rotate the hand wheel bringing the gauge into contact with the bottom blade.
The display should now read zero. If the display has a value other than zero and gauge is
in fact in contact with the bottom blade, the unit must be adjusted.
ADJUSTING the BACKGAUGE
When adjusting the back gauge, first determine that the two upper support shafts (123)
are inserted into the welded collars at the rear of the cutter head at equal amounts. The
factory setting is 1.5 inches from the face of the collar to each of the front two support
brackets (128). Upon verifying this dimension, notice that each support bracket has a hex
head bolt threaded into the body of the bracket. When the gauge is brought in to a zero
reading on the display, the head of these bolts contact the adjusting blocks (127) and
provide for a more definite stop for the readout. To perform the adjustment, bring the
adjusting blocks in contact with the bolts and then adjust the threaded rods (109)
connected to the stop (100) so that the stop is flush against the bottom blade at both ends
of the shear. Be certain to retighten the lock nuts (115) of the threaded rod.
Hold Down Adjustment
The following is the instructions to raise the hold down height to reduce the pressure
(Hold down) on your LM shear:
1. Using the jog mode, depress the jog button until the machine cutter head
reaches the bottom or its lowest position.
2. Disconnect the power to the machine.
3. Remove the sheet metal cover on the top of the hold down.
4. To raise the height of the hold down pad use two 7/8” wrenches unlock the
two nuts that are locked and positioned against the square tube. Turn the
bottom nut against the tube for 1 complete turn. Lock the top nut against the
bottom.
5. Replace the top sheet metal cover to the hold down.
6. Reconnect the power to the machine.
7. Verify the clearance or height has been raised.