Delta D25886 User Manual Page 185

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4. Motion Control Instruction
4-144 DVP-MC operating manual
4.7.4. Introduction to the Cam with Rotary Cut Function
The function curve of the cam with rotary cut function could be divided into sync area and adjustment area.
Sync area: Feed axis and rotary axis make the motion at a fixed ratio (Linear speed of knife is usually equal
to that of the cut surface), and material cutting takes place in sync area.
Adjustment area: Due to different cutting length, position need be adjusted accordingly. Adjustment area can
be in the following three situations based on various cutting length.
Short material cutting
When cutting length is less than the knife roller circumference, the rotary cut curve for any cycle is shown
below.
For the cutting of the short material, rotary cut axis must accelerate first in adjustment area, and then
decelerate to the synchronous speed.
Equal length cutting
When the cutting length is equal to knife roller circumference, the rotary cut curve for any cycle is shown
below.
Rotary cut axis
Feed axis
Sync
area
Sync area
Adjustment area
Circumference of
knife roller
End of sync
area
Start of
sync area
Cutting length
Cutting length is less
than the knife roller
circumference
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