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公开(公告)号：US20180111204A1
公开(公告)日：2018-04-26
申请号：US15794783
申请日：2017-10-26
发明人： Kenji KASAHARA , Tomoya NAKAGAWA , Osamu OHJI , Yuuki HANAWA , Shogo KOJIMA
CPC分类号： B23B49/02 , B23B49/00 , B23B2270/48 , B23Q3/002 , B23Q17/2409 , Y10T408/21
摘要： A drilling apparatus includes: a table supporting a plate; a drill machining a through-hole in the plate; an annular pressing member pressing the plate around the through-hole; a camera capturing a plate surface image through an inner space of the pressing member; and a moving device moving the drill between machining and retraction positions, the machining position being at which the drill center coincides with the pressing member center, the retraction position being a position at which the drill is positioned outside a field of view of the camera. Insertion holes distributed in a circumferential direction are formed in the pressing member, and illumination devices, each emitting light to the plate surface around the through-hole, are inserted in the respective insertion holes. An optical axis direction of each of the illumination devices inserted in the respective insertion holes and the plate surface form an angle of 25 to 60°.
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公开(公告)号：US20180114309A1
公开(公告)日：2018-04-26
申请号：US15794848
申请日：2017-10-26
发明人： Kenji KASAHARA , Shuhei SEGAWA , Osamu OHJI , Yuuki HANAWA , Shogo KOJIMA
CPC分类号： G06T7/0004 , G01N21/8806 , G01N21/8851 , G01N2021/8809 , G01N2021/8874 , G01N2021/8887 , G06T7/0006 , G06T7/12 , G06T7/64 , G06T2207/20168 , G06T2207/30164 , G06T2207/30242 , H04N5/2256
摘要： A circular scratch inspection apparatus includes: a camera capturing an image of a workpiece surface around a hole; illumination device emitting light to the workpiece surface around the hole, the light being reflected on the workpiece surface is not directly incident on the camera; and image processor. The image processor: generates a second-derivative image by performing secondary differentiation on luminance values in an actual image obtained by the camera; generates a second-derivative curve for each of a plurality of ruler lines, extending radially from the hole center and are set in an inspection target region on the workpiece surface; counts a first reference number of times for each ruler line; calculates a first reference total number of times; and determines presence or absence of a circular scratch by using the first reference total number of times.
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