6. If any readjustment is necessary, loosen the hold-down
screws first. Then readjust the jack screws.
The following procedure may be helpful in leveling the
fixture in some applications. To perform this procedure,
use a piece of carbon paper and a piece of white paper.
1. Place a sample part in the fixture.
2. Place a piece of white paper on top of the sample
part.
3. Place a piece of carbon paper, carbon side down, on
top of the white paper.
4. Enter the following parameters into the press:
Weld Time = 0.05
Hold Time = 0.00
System parameters = Use default settings. See ex-
amples on Application Setup Worksheet.
5. Set pressure to a value from 20 to 40 psi.
6. Set the trigger control on the thruster so that the pres-
sure switch closes after some pressure is applied.
7. Press the ONLINE button on the front panel.
8. Cycle the equipment by activating both finger switches
on the base or by triggering the automation switch.
When one cycle is completed, the pressure developed
between the horn and the sample part will have left marks
from the carbon paper on the white paper. If the fixture
is not level, the carbon markings will be darker in some
areas than in others. All carbon markings will be uniform
when all adjustments have been made properly.
Adjust the leveling of the fixture and repeat this proce-
dure as necessary until you are confident that the fixture
is level.
Fixture Leveling
Continued from Previous Page
Page 87
Dukane Manual Part No. 403-594-02
Section 7 - Acoustic Stack/Fixture Setup
