Advertisement
4. Stroke Adjustment
Adjust the stroke length according to POP Nut size and the thickness of
workpiece.
Note: The stroke increases and decreases by change of air pressure (about 0.1mm
per 0.1MPa) and makes the air pressure constant as much as possible.
《Procedure》
(1) Investigation of Stroke
Find maximum stroke S
and workpiece thickness from "Proper stroke of POP Nut" (p.9).
［Example］
POP Nut: SPH625
Workpiece thickness: 1.5mm
S
= 3.4 from formula or graph
max.
S
= 3.0 (S
min.
E = 3.6 (S
max.
Proper stroke: 3.0−3.4 (S
(2) Adjustment of Stroke
Adjust the stroke E and adjust proper
stroke (S
min.
max.
−S
① Loosen the M3 lock screw on the control
nut using a 1.5mm hexagonal wrench.
Adjust stroke by turning control knob
clockwise to decrease and anti-clockwise
to increase stroke. Stroke E is indicated
by the edge of control nut. Tighten the
lock screw. (Figure.4-3)
Note: Never loosen the lock screw on the
control knob, as this will disturb the stroke.
② Set a POP Nut and measure the stroke
with
calipers
difference with E. Readjust the stroke
according to ① so that the stroke is E±
0.1mm. (Figure.4-4)
Note: Using the control knob, adjustments
equal to 0.2mm per quarter turn can be made.
③ Set a POP Nut using work piece or the test
piece, and check the stroke whether it is proper stroke (S
when the stroke has come off from S
, minimum stroke S
max.
−0.4.) from formula
max.
+ 0.2) from formula
min.
−S
).
etc.
and
confirm
, and stroke E for the POP Nut
min.
)
max.
Workpiece thickness
Control nut
Lock screw
(Use 1.5mm hexa. wrench)
the
（Figure4-4）
（Figure4-5）
or S
. (Figure 4-5)
min.
max.
8
PNT800
（Figure4-2）
Control knob
Scale
Lock screw
(Never loosen)
Edge of control nut
（Figure4-3）
Stroke E
Stroke S
min.
). Readjust
min.
max.
−S
max.
−S
Advertisement
