FIELD: technological processes.
SUBSTANCE: invention relates to the field of machine-tool construction and tool industry and covers device for application of image onto surface of solid materials by method of impact or impact-rotary engraving. Device comprises tail, body and tip. Tip is arranged in the form of combinations of geometric figures. In one version in the form of polyhedral support truncated pyramid near tip base and polyhedral working pyramid near tip top, number of faces in each pyramid makes three and more, angles near tops of faces making support and working parts of tip may be equal, partially equal or unequal to each other, and angle of tip working part sharpening is within the range of 15° -175°. In the second version tip is arranged in the form of polyhedral support truncated pyramid near base and working cone near top. In the third version tip is arranged in the form of support truncated cone near base and polyhedral working pyramid near top. In the fourth version tip is arranged in the form of support truncated cone near base and working cone near top.
EFFECT: invention makes it possible to increase device service life due to giving the device working part its optimal geometric shape, dimensions and angle of sharpening, improved quality, efficiency of treatment, increased depth of processing, improved design and material saving.
35 cl, 20 dwg, 3 ex
