METHOD AND DEVICE FOR LASER BROACHING OF HOLES IN MOVING BILLET Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: method involves control of scanner mirror rotation in the direction of billet's movement through an angle of ϕ_i(t) = 2arctg S(t⁽ⁱ⁾)/2F ,, where i=1,2,...,n is the number of the hole to be broached; ϕ_i(t) is the current value of scanner mirror rotation angle during the time of broaching the hole number i; S(t⁽ⁱ⁾) is the value of billet's displacement during the time tⁱ from the moment of issuing command to broach the hole number i; F- is the focal distance of the laser-emitted light focusing system. Device has laser, modulator, controlling system, coordinate table with drives and path-control transducer, synchronization unit, having computational subunit, OR gate, signal conditioner, pulse generator, AND gate. e transducer, synchronizer, having computing device, OR- gate, signal conditioner, pulse generator and AND-gate. EFFECT: enhanced accuracy in laser broaching of holes. 2 cl, 1 dwg