9 Electrical CAM
DVP-PM Application Manual
9-72
9.6.2.3 Flying Saw – Liquid Filling Machine
The below diagram is another flying saw application: liquid filling machine. The E-CAM operation of the example
is similar to the above case of flying saw. The only difference is that the cutter is replaced by the injector. See the
simple wiring diagram as below:
SERVO
SERVO
20PM
CAM
axis
Y axis
Jog
Encoder output
SERVO
SERVO
CAM
Jog
123
SyncOut
Injector
4
Raw Material
Filling machine
PMSoft provides B-Spline function for CAM curve setting. B-Spline can smooth the CAM curve as well as the
positioning process. By selecting B-Spline as the CAM curve, we can reduce the abrasion of the mechanism and
extend its life span. The B-Spline in PMSoft ensures the smoothness and continuity of the designed CAM curve in
2
nd
order differentiation, i.e. selecting B-Spline for displacement curve also ensures the continuity of velocity cure
and acc curve. The results of the same E-CAM data with 2 different CAM curves are as below. Red curve
indicates Const Speed and blue curve indicates B-Spline.
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