METHOD AND DEVICE FOR CONTOURED SURFACE FORMATION ON STEEL EMBOSSING SHAFT Russian patent published in 2017 - IPC B23K26/364 B41C1/05 

FIELD: technological processes.

SUBSTANCE: invention relates to field of laser processing and can be used for contoured surface formation on steel embossing shaft. Contoured surface formation represents making of macrorelief with elements dimensions of more than 20 mcm and depths of up to 150 mcm inclusively, by laser exposure with following parameters: energy density in single pulses generation mode is equal to 0.5–3.5 J/cm², average density of energy in pulses packs generation mode is equal to 0.5–70 J/cm² per pulse, wave length is 532–1,064 nm, pulse repetition frequency is from 1 kHz to 10 MHz, distance between pulses on part is 10–50 % of beam diameter for femtosecond laser and 10–25 % or 40–50 % of beam diameter for picosecond laser, laser beam focal plane is located on part surface, and beam travel speed is equal to or more than 100 m/s.

EFFECT: use of invention enables to increase preset relief on embossing shaft production precision.

9 cl, 3 dwg