9 Electrical CAMDVP-PM Application Manual9-46relationship can be described by the equation below: )sin(112θα +=VV . According to the diagram below,the cutter rolls through non-sync area and syn area. In sync area, the horizontal moving distance (L) of thecutter should be the same as the moving distance of the material, and the horizontal moving distance can beobtained by the equation:αθ sincos RRL −= . In non-sync area, users can set up theacceleration/deceleration speed according to the cut length of material.Material Feeding A xis (Master)αHorizontal moving distance: LNon-syncareaSync areaθV1V2Cutting areaMaterialFuthermore, the starting position (angle) of the cutter should also be considered by the number of cutters onthe cutting axis. If the total pulses of cutting axis can be equally divided by the cutters, i.e. even number ofcutters shares even number of pulses, the pulses required for single cutter can be obtained. Convert theobtained pulses into degrees and the starting position as well as the end position can be obtained, which arethe required parameters for setting thick material cutting. On the other hand, if the total pulses of cutting axiscan not be equally divided by the cutters, i.e. even number of pulses for odd number of cutters, angle θ andthe length of Master before sync area for single cutter should be set up respectively to obtain the startingand end position of each cutter.Also, care should be taken on setting the contact angle, which is related to the thickness of the material andthe vertival position of the cutting device. When setting the contat angle, make sure the contact angle is alittle smaller or equal to the actual contact angle otherwise an arc cutting plane will be generated. On theothe hand, the sync end angle should also be a little bigger or equal to the actual sync end angle forensuring that a smooth and flat cutting plane can be obtained.The settings of two cases are explained here below.z Case 1: Pulses can be equally divided:For even number of cutters, select “Equally divide non-sync area” function by bit0 of Data 1, and DVP-PMwill automatically calculate the required pulses for each cutter. As the below diagram, in actual settings only2 parameters including “Sync start angle” and Sync end angle” are required for calculating the angle of syncarea α and the angle of non-sync area θ.
