Title:
DEVICE AND METHOD FOR INSPECTING TUBULAR PRODUCT
Document Type and Number:
WIPO Patent Application WO/2011/074261
Kind Code:
A1
Abstract:
An inspection device is provided with a camera which captures an image of the entire region of an end surface of a tubular product, a first light source which illuminates the entire circumference of only the outer peripheral edge of the tubular product on the end surface side thereof, a second light source which illuminates the entire circumference of only the inner peripheral edge of the tubular product on the end surface side thereof, and a third light source which illuminates the entire circumference of only the inner peripheral surface of the tubular product on the end surface side thereof. The inspection device captures an image of the tubular product by a camera while illuminating the tubular product by the first light source and the second light source, and calculates the outer diameter and the wall thickness of the tubular product on the basis of the captured image. Also, the inspection device captures an image of the tubular product by the camera while illuminating the tubular product by the third light source, and detects a surface defect on the inner peripheral surface of the tubular product on the basis of the captured image. The configuration makes the device compact, enables the dimensional inspection of the outer diameter and the wall thickness of the tubular product to be accurately performed using the camera, and enables the inspection of the inner surface to be performed.
Inventors:
SATOU, Kouhei (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
佐藤 康平 (〒41 大阪府大阪市中央区北浜四丁目５番３３号住友金属工業株式会社内 Osaka, 〒5410041, JP)
TOE, Hirotsugu (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
佐藤 康平 (〒41 大阪府大阪市中央区北浜四丁目５番３３号住友金属工業株式会社内 Osaka, 〒5410041, JP)
TOE, Hirotsugu (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
Application Number:
JP2010/007299
Publication Date:
June 23, 2011
Filing Date:
December 16, 2010
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
住友金属工業株式会社 (〒41 大阪府大阪市中央区北浜四丁目５番３３号 Osaka, 〒5410041, JP)
SATOU, Kouhei (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
佐藤 康平 (〒41 大阪府大阪市中央区北浜四丁目５番３３号住友金属工業株式会社内 Osaka, 〒5410041, JP)
住友金属工業株式会社 (〒41 大阪府大阪市中央区北浜四丁目５番３３号 Osaka, 〒5410041, JP)
SATOU, Kouhei (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
佐藤 康平 (〒41 大阪府大阪市中央区北浜四丁目５番３３号住友金属工業株式会社内 Osaka, 〒5410041, JP)
International Classes:
G01B11/08; B21C51/00; G01B11/06; G01B11/30; G01N21/954
Attorney, Agent or Firm:
MORI, Michio et al. (M. MORI PATENT OFFICE, 17-23 Higashinaniwa-cho 5-chome, Amagasaki-sh, Hyogo 92, 〒6600892, JP)