JPS56124006A - Measuring method for flatness of plane plate - Google Patents
Measuring method for flatness of plane plateInfo
- Publication number
- JPS56124006A JPS56124006A JP1314980A JP1314980A JPS56124006A JP S56124006 A JPS56124006 A JP S56124006A JP 1314980 A JP1314980 A JP 1314980A JP 1314980 A JP1314980 A JP 1314980A JP S56124006 A JPS56124006 A JP S56124006A
- Authority
- JP
- Japan
- Prior art keywords
- picked
- light
- picture
- width
- pickup device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
- G01B11/306—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces for measuring evenness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
PURPOSE:To enable measurement of the flatness of a plane plate in the width and longitudinal direction thereof without being influenced by outside turbulence by a method wherein a plurality of slender light images extending in the direction of the width of the plate and separated at uneven intervals are projected and formed on the plane plate nonvertically and picked up at once by a two-dimensional pickup device. CONSTITUTION:A laser beam generating device 4 is provided above the upstream side of a steel plate 1 which is carried, a laser beam LB is emitted in the direction of an axis Y be rotating an eight-face mirror 5 and the reflection light of the beam is picked up by a pickup device 3. Since the mirror faces 56-58 and 54-51 of the eight-face mirror 5 are titled sequentially at an angle different to each other to a central axis 50, a picture picked up by the pickup device 3 turns to be eight slender light images separated at unequal intervals. This picture is projected on a monitor 6, while a picture signal thus obtained is inputted in a video-digital conversion memorizing device 91, a light-image coordinate reading device 92 and a device 101 for reading peak value and time width of the light image through an analog switch 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1314980A JPS56124006A (en) | 1980-02-05 | 1980-02-05 | Measuring method for flatness of plane plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1314980A JPS56124006A (en) | 1980-02-05 | 1980-02-05 | Measuring method for flatness of plane plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56124006A true JPS56124006A (en) | 1981-09-29 |
JPS6134601B2 JPS6134601B2 (en) | 1986-08-08 |
Family
ID=11825099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1314980A Granted JPS56124006A (en) | 1980-02-05 | 1980-02-05 | Measuring method for flatness of plane plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56124006A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63274806A (en) * | 1987-05-01 | 1988-11-11 | Nippon Steel Corp | Detection of shape of slip in continuous annealing furnace |
JPH112511A (en) * | 1997-03-11 | 1999-01-06 | Betrieps Forsch Vdeh Inst Angew Forsch Gmbh | Flatness measuring system for metal strip |
-
1980
- 1980-02-05 JP JP1314980A patent/JPS56124006A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63274806A (en) * | 1987-05-01 | 1988-11-11 | Nippon Steel Corp | Detection of shape of slip in continuous annealing furnace |
JPH112511A (en) * | 1997-03-11 | 1999-01-06 | Betrieps Forsch Vdeh Inst Angew Forsch Gmbh | Flatness measuring system for metal strip |
Also Published As
Publication number | Publication date |
---|---|
JPS6134601B2 (en) | 1986-08-08 |
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