9 Electrical CAMDVP-PM Application Manual9-64(mm/pulses)Winding shaft(Master/Yaxis)Length of single speedpositioning (pulses)=N2 x B Master= = 100 x 3600 = 360000Master Max (pulses) =2 x N1 x BMaster = 2 x 20 x 3600 = 144000“2” indicates double layer windingSettingsCoil shaft(Slave/X axis) Slave max (pulses) =N1 x D/C Slave = 20 x 0.3 / (0.1/100)=60009.6.2 E-CAM Application on Rotary Cut and Flying Saw DevicesThe traditional material feeding and cutting applications apply go-and-stop pattern. The feeding control axismoves the material for a fixed distance and the cutting control axis performs the cutting process. In this pattern,feeding control axis repeats the move-and-stop actions while cutting control axis repeats cut-and-stop actions.Therefore, a go-and-stop working pattern is formed. However, the production efficiency of the pattern is low dueto the deceleration and acceleration time generated in go-and-stop process. Aiming at this problem, mostcurrent cutting applications apply continuous cutting patterns, such as rotary cut and flying saw, which havesome difference with each other on E-CAM data design. Flying saw operates in reciprocating movements whilerotary cut operates in the same direction. In addition, thick material cutting also works in the same direction asrotary cut. The difference between think material cutting and rotary cut is the E-CAM curve variation in cuttingprocess. Unlike the constant proportion curve of rotary cut’s sync area, the E-CAM curve of thick material cuttingvaries during the cutting process between the start and the end of cutting. The 3 E-CAM applications areexplained as below.9.6.2.1 Rotary CutWhen the rotary cutter performs cutting action, the feeding conveyor does not slow down and stop. When thecutter touches the material, the moving speed of cutter should be the same as that of the feeding conveyor. Ifthe cutter is slower than the conveyor, the material will be squeezed and piled; if the cutter is faster than theconveyor, the material will be extended and damaged.The operation and simple wiring of rotary cut is illustrated as below. Positions 1, 2, 3 and 4 respectively indicatestarting posiiton, middle position, end position and ready position of speed synchronization. When Master (Yaxis) executes, Slave (X axis) accelerates from position 4 to position 1, reaching the synchronizing speed. Thesync speed is maintained from position 1 to position 3. After position3, Slave decelerates and returns to position4. The cycle repeats for continous rotary cut operation.
