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Calibrating your AutoSet 1500
Whether you are using the AutoSet 1500 or the WLA calibration kit, the unit should now be
set up so it will read the correct tonnage applied to the load cells. Follow the steps below to
set up the loads cells on the press and calibrate the AutoSet 1500 installed on your press.
Setting up the press
1.
Make sure that the die is removed from the press and that any bolster/bed
openings or ram holes are covered with a plate or plates rigid enough to prevent
flexing. Data Instruments strongly recommends using 1" to 2" thick steel plates
(parallels) above and below the load cells to more evenly distribute the load on
the bed and ram. This helps to improve calibration accuracy and linearity.
2.
Bring the ram to bottom dead center and turn off the power to the press. The press
must be at 180°. Use a dial indicator if necessary.
3.
Place the load cell (or cells) and parallels under the connecting rod(s). Make sure
they are centered under the connecting rods to ensure even load distribution on
the press frame.
4.
Turn on the press and cycle the press through one stroke.
5.
Use the shut height adjustments to lower the ram 0.003" or 0.004" (0.076–0.102
mm) on successive strokes until the readout on your calibration unit indicates that
contact on the load cell(s) is being made at bottom dead center.
NOTE: DO NOT STOP THE RAM ON THE LOAD CELLS. ALWAYS CYCLE THE
PRESS THROUGH A COMPLETE STROKE.
If you are using the Wintriss Load Analyzer (WLA) as your
calibration unit, you should zero it after every complete stroke using
the switch you installed on the WLA calibration kit earlier.
You do not have to zero the AutoSet calibration unit.
6.
Determine the load you should put on the press. Tonnage on the load cells should
be equal to the tonnage normally used when making parts. For example, if you
usually run between 60–90% of press capacity, then set the press at 75% of
capacity. This will give you the most accurate tonnage readings within this range.
In any case, make sure that you set tonnage to greater than 50% of press capacity.
Also make sure the capacity of the press is not exceeded.
AutoSet 1500 User Manual
NOTE
33
Calibration
Ch 3
1088500
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