EA201800427A1 - METHOD AND DEVICE FOR CONTROL OF FORM OF DIFFICULT ACCESSIBLE PARTS - Google Patents

METHOD AND DEVICE FOR CONTROL OF FORM OF DIFFICULT ACCESSIBLE PARTS

Info

Publication number
EA201800427A1
EA201800427A1 EA201800427A EA201800427A EA201800427A1 EA 201800427 A1 EA201800427 A1 EA 201800427A1 EA 201800427 A EA201800427 A EA 201800427A EA 201800427 A EA201800427 A EA 201800427A EA 201800427 A1 EA201800427 A1 EA 201800427A1
Authority
EA
Eurasian Patent Office
Prior art keywords
laser
hard
shape
reach
white light
Prior art date
Application number
EA201800427A
Other languages
Russian (ru)
Other versions
EA036199B1 (en
Inventor
Борис Анатольевич Чичигин
Original Assignee
Борис Анатольевич Чичигин
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 Борис Анатольевич Чичигин filed Critical Борис Анатольевич Чичигин
Priority to EA201800427A priority Critical patent/EA036199B1/en
Publication of EA201800427A1 publication Critical patent/EA201800427A1/en
Publication of EA036199B1 publication Critical patent/EA036199B1/en

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
    • G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
    • G01B11/2513—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object with several lines being projected in more than one direction, e.g. grids, patterns
    • 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
    • G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means
    • 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
    • G01B11/2441—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using interferometry
    • 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
    • G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
    • G01B11/2545—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object with one projection direction and several detection directions, e.g. stereo

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Группа изобретений относится к измерительной технике, в частности к способам контроля формы труднодоступных деталей, и может быть использовано в энергетике, транспорте, машиностроении и в других областях техники для измерения геометрических параметров детали. Технический результат предлагаемого изобретения заключается в повышении точности, достоверности и производительности выполнения измерений, относящихся к определению формы и дефектов деталей, установленных в полостях, а также формы внутренних полостей изделий и поверхностных несплошностей. Способ контроля формы труднодоступных деталей, включающий в себя этапы доставки внутрь контролируемого оборудования исполнительной части системы контроля, снабженной миниатюрной стереокамерой, для навигации по траектории которой используется освещение белого света, которое передается по оптическому волокну, после выхода из которого требуемая индикатриса освещенности формируется посредством первой линзы. Далее следует этап выключения или приглушения белого света с последующим включением лазера, который посредством оптического волокна, передающего лазерный поток, проходящий через вторую линзу, с формированием пучка лучей, который, проходя через дифракционный оптический элемент, формирует на труднодоступной поверхности детали изображение с мелкими лазерными пятнами интенсивности с получением стереоскопического изображения труднодоступной поверхности детали. Производят восстановление трехмерной труднодоступной поверхности, при этом используют лазерные пятна интенсивности на паре плоских изображений, для автоматической идентификации одинаковых точек пространства объектов на стереоизображениях с заданной степенью достоверности. Система контроля состоит из миниатюрной цифровой камеры, формирующей стереоизображение исследуемого объекта, блока освещения белого света, лазерного осветителя, работающего в импульсном или непрерывном режиме, ручки, размещенной на пульте управления артикуляцией, ПК для обработки и отображения информации, тросы артикуляции, две линзы, ДОЭ, волокно для лазера, волокно для освещения, линию питания и линию передачи видеосигнала.The group of inventions relates to measuring technology, in particular to methods for controlling the shape of hard-to-reach parts, and can be used in power engineering, transport, mechanical engineering and other fields of technology to measure the geometric parameters of a part. The technical result of the proposed invention is to improve the accuracy, reliability and productivity of measurements related to the determination of the shape and defects of parts installed in the cavities, as well as the shape of the internal cavities of products and surface discontinuities. A method for controlling the shape of hard-to-reach parts, which includes the stages of delivering the executive part of the control system equipped with a miniature stereo camera to the controlled equipment, for navigating along the trajectory of which white light illumination is used, which is transmitted through an optical fiber, after leaving which the required illumination indicatrix is formed by means of the first lens ... This is followed by the stage of turning off or dimming the white light, followed by turning on the laser, which, by means of an optical fiber that transmits the laser flux passing through the second lens, with the formation of a beam of rays, which, passing through the diffractive optical element, forms an image with small laser spots on the hard-to-reach surface of the part intensity with obtaining a stereoscopic image of a hard-to-reach surface of a part. Reconstruction of a three-dimensional hard-to-reach surface is carried out, while laser intensity spots are used on a pair of flat images for automatic identification of identical points of object space on stereo images with a given degree of reliability. The control system consists of a miniature digital camera that forms a stereo image of the object under study, a white light illumination unit, a laser illuminator operating in pulsed or continuous mode, a handle located on the articulation control panel, a PC for processing and displaying information, articulation cables, two lenses, DOE , laser fiber, lighting fiber, power line and video transmission line.

EA201800427A 2018-06-04 2018-06-04 Shape control method and device for hard-to-reach parts EA036199B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EA201800427A EA036199B1 (en) 2018-06-04 2018-06-04 Shape control method and device for hard-to-reach parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EA201800427A EA036199B1 (en) 2018-06-04 2018-06-04 Shape control method and device for hard-to-reach parts

Publications (2)

Publication Number Publication Date
EA201800427A1 true EA201800427A1 (en) 2019-12-30
EA036199B1 EA036199B1 (en) 2020-10-13

Family

ID=69061868

Family Applications (1)

Application Number Title Priority Date Filing Date
EA201800427A EA036199B1 (en) 2018-06-04 2018-06-04 Shape control method and device for hard-to-reach parts

Country Status (1)

Country Link
EA (1) EA036199B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4170280A4 (en) * 2020-06-18 2024-03-13 Turboscan, LLC. Method and device for monitoring the shape of hard-to-reach components

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2284469C2 (en) * 2004-08-12 2006-09-27 ФГУП "НИИАСПК" (Федеральное государственное унитарное предприятие "Научно-исследовательский институт автоматизированных средств производства и контроля") Method of noncontact checking of linear dimensions of three-dimensional objects
RU2329490C1 (en) * 2006-10-13 2008-07-20 Институт физики металлов УрО РАН Method of generating image of surface topography and device for its implementation
US10132616B2 (en) * 2015-04-20 2018-11-20 Samsung Electronics Co., Ltd. CMOS image sensor for 2D imaging and depth measurement with ambient light rejection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4170280A4 (en) * 2020-06-18 2024-03-13 Turboscan, LLC. Method and device for monitoring the shape of hard-to-reach components

Also Published As

Publication number Publication date
EA036199B1 (en) 2020-10-13

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