The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 1984
Filed:
Apr. 16, 1980
Jurg Steffen, Sigriswil, CH;
Lasag SA, Thun, CH;
Abstract
The invention relates to a process and device for deburring mechanical pieces by laser radiation. The device makes it possible to generate a laser beam of determined power Pa. The laser beam is focused in a focusing spot of a diameter 2.omega.o on the edges of the mechanical piece to be deburred. The focused laser beam causes a volatilization of the burrs of the edge considered: axis ZZ' of the laser beam is approximately concurrent with the edge to be treated and the material is vitrified over a width .omega.o. To obtain, on the edge, a given angle of sharpening .alpha. of a skew surface constituting the edge of a given radius of curvature R, the emission power ##EQU1## where K represents the heat conductivity coefficient of the material of the pieces and Tv and Ts its vaporization and fusion temperatures respectively. A relative movement of the focusing spot of the laser beam in relation to the edge to be treated is performed at a linear speed ##EQU2## where H represents the thermal diffusivity coefficient of the material. The invention finds application in the removal of the wire edge of sharp instruments.