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公开(公告)号：US3483045A
公开(公告)日：1969-12-09
申请号：US3483045D
申请日：1965-05-25
Applicant: BARNES ENG CO
Inventor： VILLERS PHILIPPE
CPC classification number: G01J5/12
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公开(公告)号：US3602596A
公开(公告)日：1971-08-31
申请号：US3602596D
申请日：1968-04-05
Applicant: BARNES ENG CO
Inventor： ASTHEIMER ROBERT W , WEISS MORRIS , VILLERS PHILIPPE
CPC classification number: G01B11/303
Abstract: A roughness meter for measuring r.m.s. roughness, especially in the range from about 1-5 Mu in., the meter providing a choice of at least two wavelength bands of illumination, at least one being in the infrared. The wavelength of illumination, or more precisely the reflected radiation, is preferably from 20-50 times the r.m.s. roughness. The radiation is reflected onto various curved surfaces, such as toroidal surfaces of ball bearing races. In every case a reflecting surface is used which causes the beam of radiation to strike all points of the surface at substantially normal incidence, and there is in the beam path no material which has a significant refractive index which is wavelength dependent. Air is preferred. Reflected light is detected and an electrical output is produced which is a measure of the r.m.s. reflectance. The reflecting surface may be a portion of an ellipsoid or a parabolaoid. In the first case the beam of radiation is focused at one of the conjugate foci of the ellipse and the bearing space is accurately positioned so that the center of its curvature is at the other conjugate focus. In the case of a parabola, of course, collimated light is used.
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公开(公告)号：US3436274A
公开(公告)日：1969-04-01
申请号：US3436274D
申请日：1965-05-25
Applicant: BARNES ENG CO
Inventor： VILLERS PHILIPPE
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公开(公告)号：US3424624A
公开(公告)日：1969-01-28
申请号：US3424624D
申请日：1965-05-25
Applicant: BARNES ENG CO
Inventor： VILLERS PHILIPPE , FALBEL GERALD
CPC classification number: G01J5/12
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