| 摘要 |
FIELD: incising of picture on wooden, stone or metal surface in accordance with the copy. SUBSTANCE: the engraving machine has an impressing tool with a coordinate scanning drive, photoelectric sensing unit, whose output via an amplifier is connected to the control input of the amplitude modulator, and a generator; the machine uses also a frequency modulation unit and an amplitude modulator gain control unit, whose inputs are connected to the amplifier output. EFFECT: improved design. |
