JPS5761907A - Measuring method straightness of shape steel stock - Google Patents

Measuring method straightness of shape steel stock

Info

Publication number
JPS5761907A
JPS5761907A JP13575280A JP13575280A JPS5761907A JP S5761907 A JPS5761907 A JP S5761907A JP 13575280 A JP13575280 A JP 13575280A JP 13575280 A JP13575280 A JP 13575280A JP S5761907 A JPS5761907 A JP S5761907A
Authority
JP
Japan
Prior art keywords
heads
points
degree
measured
straightness
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.)
Pending
Application number
JP13575280A
Other languages
Japanese (ja)
Inventor
Masaru Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP13575280A priority Critical patent/JPS5761907A/en
Publication of JPS5761907A publication Critical patent/JPS5761907A/en
Pending legal-status Critical Current

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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers

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 realize an automatic measurement for the amount of distortion in a short time and with high accuracy, by installing at least three noncontacting measuring heads at three areas in the lengthwise direction of an object to be measured and calculating the value detected by these heads. CONSTITUTION:An object 1 to be measured is put on a holding member 2, and three points A, B and C are selected with spaces l1 and l2 for three sections right-angles to the lengthwise direction of the object 1. Then noncontacting bent measuring heads 51, 52 and 53 like laser beams are installed at the three points to be connected to an arithmetic circuit 14. In this constitution, the degree of bend between two points A and C is expressed as d1(d3-d1).l1/(l1/(l1+ l2)-d2, where the dis tances between the object 1 and each of the three heads are d1, d2 and d3 respectively. Then the head output is supplied to the circuit 14 to carry out the above-mentioned arithmetic, and the degree of bend is displayed on a display device 15. For the degree of warp, measuring heads 71-73 are used. In such way, the extent of each type of distortion can be automatically measured in a short time and with high accuracy.
JP13575280A 1980-10-01 1980-10-01 Measuring method straightness of shape steel stock Pending JPS5761907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13575280A JPS5761907A (en) 1980-10-01 1980-10-01 Measuring method straightness of shape steel stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13575280A JPS5761907A (en) 1980-10-01 1980-10-01 Measuring method straightness of shape steel stock

Publications (1)

Publication Number Publication Date
JPS5761907A true JPS5761907A (en) 1982-04-14

Family

ID=15159032

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13575280A Pending JPS5761907A (en) 1980-10-01 1980-10-01 Measuring method straightness of shape steel stock

Country Status (1)

Country Link
JP (1) JPS5761907A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0218679U (en) * 1988-07-19 1990-02-07
EP1447645A1 (en) * 2003-01-28 2004-08-18 DANIELI AUTOMATION SpA Method and device to check the straightness and torsion of long products
KR101247983B1 (en) 2010-12-28 2013-03-27 주식회사 성우하이텍 Curvature inspecting device of roll forming beam
EP3093611A3 (en) * 2015-05-15 2017-03-08 Q-TECH S.r.l. Measuring method and device to measure the straightness error of bars and pipes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0218679U (en) * 1988-07-19 1990-02-07
EP1447645A1 (en) * 2003-01-28 2004-08-18 DANIELI AUTOMATION SpA Method and device to check the straightness and torsion of long products
US7266234B2 (en) 2003-01-28 2007-09-04 Danieli Automation Spa Method and device to control the straightness and torsions of long products
EP2293012A2 (en) 2003-01-28 2011-03-09 DANIELI AUTOMATION SpA Method and device to control the torsions of long products
KR101247983B1 (en) 2010-12-28 2013-03-27 주식회사 성우하이텍 Curvature inspecting device of roll forming beam
EP3093611A3 (en) * 2015-05-15 2017-03-08 Q-TECH S.r.l. Measuring method and device to measure the straightness error of bars and pipes

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