Patent ID: 7191031

Claim:
A reverse rotation preventing electronic cam curve generating method of an electronic cam type rotary cutter control which prevents a reverse rotation of a rotary cutter when a cutting length is great, wherein a critical cutting length L jag from which an electronic cam curve passing through a point having an acceleration of 0 and a speed of 0 is obtained is previously calculated by setting a rotor diameter r of the rotary cutter, the number of blades M provided at regular intervals on a rotor, synchronizing speed coefficients β 1 and β 2 for regulating synchronizing speeds in cutting, and synchronizing angles θ 1 and θ 2 and is compared with a set cutting length L set of a processed product which is set by an operator, and an electronic cam curve pattern for preventing a reverse rotation is generated to carry out a reverse rotation preventing control when the set cutting length L set is greater.