4. Motion Control Instruction Rotary cut axis Sync area Adjustment area Circumference of knife roller Sync area Cutting length equals the knife roller circumference Feed axis End of sync area area Cutting length Start of sync In this situation, feed axis and rotary cut axis in sync area and non-sync area keep synchronous in speed. The rotary cut axis does not need to make any adjustment. Long material cutting When the cutting length is greater than the knife roller circumference, the rotary cut curve for any cycle is shown below.
Rotary cut axis Sync area Adjustment area Circumference of knife roller Sync area Cutting length is greater than the knife roller circumference Feed axis area End of sync Start of sync area Cutting length In this situation, rotary cut axis should decelerate first in adjustment area and then accelerate to synchronous speed. If the cutting length is far greater than rotary cut roller circumference, the roller may decelerate to 0 and then stay still for a while; finally, accelerate up to synchronous speed. The greater the cutting length is, the longer the roller stays. 4-162 DVP-MC operating manual