초록 ▼

A method of machining and a tool is used for obtaining patterns in the form of alternating ridges, pads, cells, and ridges of a triangular cross section on the surface of a blank. The method facilitates selection of the geometrical parameters of the tool and the machining mode for the tool to obtain

A method of machining and a tool is used for obtaining patterns in the form of alternating ridges, pads, cells, and ridges of a triangular cross section on the surface of a blank. The method facilitates selection of the geometrical parameters of the tool and the machining mode for the tool to obtain alternating ridges and depressions with parallel sides of the profile at predetermined intervals and predetermined heights and angles of slope. The width of the space between projections can be varied in the range of millimeters and micrometers.

대표청구항 ▼

[ We claim:] [1.] A method for producing on a blank a surface having a profile of alternating ridges and depressions with parallel sides, comprising:as a first step, employing a tool with a rectilinear cutting edge having:a main angle .phi. in a plan of said tool according to a relationship: EQU .ph

[ We claim:] [1.] A method for producing on a blank a surface having a profile of alternating ridges and depressions with parallel sides, comprising:as a first step, employing a tool with a rectilinear cutting edge having:a main angle .phi. in a plan of said tool according to a relationship: EQU .phi.=arcsin [a/(S.multidot..epsilon.)]where a=a given thickness of a ridgeS=a given pitch of said ridges of said profile.epsilon.=a distortion factor of said ridge profile equal to between 0.9 and 1.1,an auxiliary angle .phi..sub.1 in said plan view of said tool equal to (90.degree.-.psi.),where .psi. is a preset angle of deviation of a projection of said ridge from a vertical position with respect to said blank,a depth of penetration t equal to EQU t=[h.multidot..epsilon.-S.multidot.cos (.phi.-.psi.)/2].multidot.(sin .phi./cos .psi.),where h=a given height of said ridges of said profile, anda feed S.sub.o equal to said pitch of said ridges, andas a second step, moving said blank and said tool relative to each other, and undercutting and plastically deforming a surface layer of said blank with said tool while preserving an undercut layer on said surface to form alternating ridges and depressions with parallel sides.