Page 18 Emhart Teknologies - 50 Shelton Technology Center, Shelton CT 06484 - Tel. (203) 924-9341 - Fax (800) 225-5614
Setting Force Adjustment
•
Verify the proper Valve Spring is selected – See “
Setting Force Valve Spring Selection
“
•
Adjust the setting force of the tool according to insert size and thickness of work piece as
indicated in the instructions below.
•
Test 5 pieces before beginning production work to ensure proper setting of the POP NUT™.
•
Proper setting force is critical:
o
Low setting Force results in insufficient stroke and clamping of the insert, leading to a
Spin Out failure in the application
o
High setting force results in excess stroke and possible insert threads stripping and
Mandrel damage
Adjustment of Setting Force
The following is the procedure for adjusting the Setting Force:
1. Loosen Socket Set Screw on Setting Force Control Valve.
2. Turn the Adjuster using a flat blade screwdriver as needed.
a. Adjust Setting force by 1/4 turn increments to prevent stripping or damaging of insert
threads.
3. Tighten Socket Set Screw on Setting Force Control Valve.
DESIRED EFFECT
ACTION
Increase Setting Force (Increases Stroke)
Rotate Adjuster Clockwise
Decrease Setting Force (Decreases Stroke)
Rotate Adjuster Counter-Clockwise
Figure 13:
Adjustment of Setting Force
Note:
•
The stoke may increase or decrease due to changes in air pressure [~0.1 mm (0.004 in) per 0.1
MPa (15 psi)]
•
Multiple work piece thicknesses
o
When using the POP NUT™ tool to set the same insert in multiple work piece
thicknesses, adjust the setting force to accommodate the thinnest work piece.
WARNING!
Adjust Fastening Load Control Valve by 1/4 rotations.
If the Adjuster is rotated clockwise by a large amount to increase the setting force it may cause stripping or
sticking of Mandrel and/or POP NUT™ threads.
Adjuster
Socket Set Screw
Setting Force
Control Valve
