5 Applied Instructions and Basic Usage
5.10.27 Rotary Cut
1. Motion control function block
The motion control function block T_RotaryCut is used to create a rotary cut curve, and execute
electronic cam motion. Users can modify the length of a cutting by means of the MaterialSize input pin.
After the length of a cutting is modified, the new cam curve created will be executed in the second or
the third cam cycle. The motion control function block is only applicable to thin materials.
Concept
In the application of rotary cut, the cutting roller of a rotary cutter rotates in a direction. A material is cut
when the blade of the rotary cutter comes into contact with the material. The feeding roller of the rotary
cutter continuously feeds materials at a uniform speed. The relation between rotary cut and the output
generated is shown below.
(1) At first, the slave axis accelerates until it moves to the synchronization zone.
(2) The speed of the slave axis is equal to the speed of the master axis in the synchronization zone,
and CLR0 is ON.
(3) After the slave axis leaves the synchronization zone, it decelerates until it returns home. A cycle is
complete when the slave axis is at home. Users can draw a speed relation chart.
1
2
3
Synchronization
zone
(Cutting zone)
Feeding axis
(master axis)
Cutting axis
(Slave axis)
V
T
Equal to the speed
of the master axis
Acceleration
Synchronization
Deceleration
Distance for which the master axis moves
(Length of a cutting)
Home
(4) During the processing of cutting materials, synchronization is an important factor. When the bladed
of a rotary cutter come into contact with a material, the speed of the blade must be the same as the
speed of the material. If the speed of the blade of a rotary cutter is greater than the speed of a
material when it comes into contact with the material, the force which pulls the material forward will
appear, and the material will be cut smoothly. If the speed of the blade of a rotary cutter is less than
DVP-20PM Application Manual
5-226
To Next Page
Loading...
Need help?
General
