CN107764210B - Pitch ear auricle assembly pin hole method for measuring coaxiality - Google Patents
Pitch ear auricle assembly pin hole method for measuring coaxiality Download PDFInfo
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- CN107764210B CN107764210B CN201711044615.4A CN201711044615A CN107764210B CN 107764210 B CN107764210 B CN 107764210B CN 201711044615 A CN201711044615 A CN 201711044615A CN 107764210 B CN107764210 B CN 107764210B
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- pin hole
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- fork ear
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- 210000000624 ear auricle Anatomy 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000011295 pitch Substances 0.000 claims abstract description 15
- 239000000284 extract Substances 0.000 claims abstract description 10
- 238000000605 extraction Methods 0.000 claims abstract description 6
- 230000000007 visual effect Effects 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 8
- 206010000361 Accessory auricle Diseases 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
Classifications
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- 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
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention provides a kind of fork ear auricle assembly pin hole method for measuring coaxiality comprising step: S1, and camera and light source are installed on along pin hole axis to the two sides of fork ear pin hole respectively, and the light-transmissive fork ear pin hole for issuing light source is by cameras capture；Auricle is fitted into fork ear and pitches ear auricle assembly to constitute by S2, so that auricle pin hole and fork ear pin hole is partially overlapped, can penetrate light；S3 opens light source, shoots the pin hole image of fork ear auricle assembly from pin hole axis direction using camera；S4, image procossing simultaneously extract required feature；S5 judges to pitch ear pin hole and whether auricle pin hole is coaxial by the feature of extraction, if not coaxial, provides the offset direction of the opposite fork ear pin hole axis of auricle pin hole axis.In the present invention based on the use of camera, the pin hole image of fork ear auricle assembly is shot from pin hole axis direction, real-time measurement pitches the concentricity of ear pin hole and auricle pin hole and carries out feedback control, improves assembly precision.
Description
The application be former application for a patent for invention (applying date is on October 20th, 2015, application No. is 201510681320.2,
Invention and created name is " fork ear auricle assembly pin hole method for measuring coaxiality ") divisional application.
Technical field
The present invention relates to large parts assembly control and detection technique field more particularly to a kind of fork ear auricle assemblies
Pin hole method for measuring coaxiality.
Background technique
Fork ear and auricle assembly are a kind of common assembly methods in large parts assembly field, pitch ear and auricle pin hole
The height of concentricity decides the rigging error size between related components.In fork ear and auricle assembling process, need i.e.
When measurement pin hole concentricity and carry out feedback control, to control assembly precision.The prior art can not accomplish high-precision same in real time
The measurement of axis degree, causes assembly efficiency low, it is difficult to realize Automated assembly.
Summary of the invention
In view of the problems in the background art, the purpose of the present invention is to provide a kind of fork ear auricle assembly pin hole is same
Axis degree measurement method, required measuring device is simple, easy to operate, can fork ear and auricle assembling process in real-time measurement concentricity
And feedback control signal is provided in time, improve the coaxality measurement precision of fork ear and auricle axis hole.
To achieve the goals above, the present invention provides a kind of fork ear auricle assembly pin hole method for measuring coaxiality,
Camera and light source are installed on the two sides of fork ear pin hole, the luminous energy for issuing light source comprising steps of S1 by spy along pin hole axis respectively
Through fork ear pin hole by cameras capture；Auricle is fitted into fork ear and pitches ear auricle assembly to constitute, makes auricle pin hole and fork by S2
Ear pin hole partially overlaps, and can penetrate light；S3 opens light source, shoots fork ear auricle from pin hole axis direction using camera and assembles
The pin hole image of body；S4, image procossing simultaneously extract required feature；S5 passes through the feature judgement fork ear pin hole and auricle pin of extraction
Whether hole is coaxial, if not coaxial, provides the offset direction of the opposite fork ear pin hole axis of auricle pin hole axis.
Beneficial effects of the present invention are as follows:
In fork ear auricle assembly pin hole method for measuring coaxiality of the invention, the use based on camera, from pin bore axis
The pin hole image of line direction shooting fork ear auricle assembly, real-time measurement are pitched the concentricity of ear pin hole and auricle pin hole and are carried out anti-
Feedback control, improves assembly precision.
Detailed description of the invention
Fig. 1 is the perspective view of the fork ear of fork ear auricle assembly pin hole method for measuring coaxiality according to the present invention, wherein
Show four fork ears；
Fig. 2 is the perspective view of the auricle of fork ear auricle assembly pin hole method for measuring coaxiality according to the present invention, wherein
Show four auricles；
Fig. 3 is the fork ear auricle of an embodiment of fork ear auricle assembly pin hole method for measuring coaxiality according to the present invention
The perspective view for assembling fluid measurement device, wherein merely illustrating a fork ear and an auricle (light source in figure in order to clearly visible
The position for only representing light source is not offered as the range of light radiation)；
Fig. 4 be it is according to the present invention fork ear auricle assembly pin hole method for measuring coaxiality another embodiment fork ear and
Exploded view before pitching ear assembling fittings, wherein merely illustrating a fork ear in order to clearly visible；
Fig. 5 be with the exploded view before the auricle of Fig. 4 the same embodiment and auricle assembling fittings, wherein in order to clearly may be used
See, merely illustrates an auricle；
Fig. 6 is the exploded view of the fork ear accessory in Fig. 4；
Fig. 7 is the exploded view of the auricle accessory in Fig. 5；
Fig. 8 is the fork ear ear of the another embodiment of fork ear auricle assembly pin hole method for measuring coaxiality according to the present invention
The perspective view of piece assembly measuring device, wherein merely illustrating a fork ear and the auricle (light in figure in order to clearly visible
The position that source only represents light source is not offered as the range of light radiation)；
Fig. 9 is the fork ear ear of the another embodiment of fork ear auricle assembly pin hole method for measuring coaxiality according to the present invention
The perspective view of piece assembly measuring device, wherein merely illustrating a fork ear and the auricle (light in figure in order to clearly visible
The position that source only represents light source is not offered as the range of light radiation)；
Figure 10 is the image schematic diagram that embodiment described in fig. 4 to fig. 6 obtains；
Figure 11 is the image schematic diagram obtained when embodiment described in embodiment and Fig. 9 described in Fig. 8 is coaxial；
Figure 12 is the image schematic diagram being likely to be obtained when embodiment described in embodiment and Fig. 9 described in Fig. 8 is not coaxial；
Figure 13 is another image schematic diagram being likely to be obtained when embodiment described in embodiment and Fig. 9 described in Fig. 8 is not coaxial.
Wherein, the reference numerals are as follows:
1 camera, 52 annular resilient collar
2 light source, 53 pin hole
3 fork 6 auricle accessories of ear
31 fork 61 annular grooves of ear pin hole
4 auricle, 62 annular resilient collar
41 auricle pin hole, 63 pin hole
5 fork ear 7 camera frames of accessory
51 annular grooves
Specific embodiment
It is described in detail fork ear auricle assembly pin hole method for measuring coaxiality according to the present invention with reference to the accompanying drawings.Ginseng
According to Fig. 1 to Figure 13, fork ear auricle assembly pin hole method for measuring coaxiality according to the present invention comprising step: S1, by camera
1 and light source 2 respectively along pin hole axis be installed on fork ear pin hole 31 two sides, make light source 2 issue light-transmissive fork ear pin hole 31
It is captured by camera 1；Auricle 4 is fitted into fork ear 3 and pitches ear auricle assembly to constitute by S2, makes auricle pin hole 41 and fork ear pin hole
31 partially overlap, and can penetrate light；S3 opens light source 2, shoots fork ear auricle assembly from pin hole axis direction using camera 1
Pin hole image；S4, image procossing simultaneously extract required feature；S5 passes through the feature judgement fork ear pin hole 31 and auricle pin of extraction
Whether hole 41 is coaxial, if not coaxial, provides the offset direction of opposite fork 31 axis of ear pin hole of 41 axis of auricle pin hole.
In fork ear auricle assembly pin hole method for measuring coaxiality of the invention, based on the use of camera 1, from pin bore axis
The pin hole image of line direction shooting fork ear auricle assembly, real-time measurement fork ear pin hole 31 and the concentricity of auricle pin hole 41 are gone forward side by side
Row feedback control, improves assembly precision.
In one embodiment, in step s 5, as fruit fork ear pin hole 31 and auricle pin hole 41 be not coaxial, then also in step S2
Middle adjustment auricle 4 and the assembly for pitching ear 3, repeat step S3 to step S5, until fork ear pin hole 31 and auricle pin hole 41 are coaxial.
In one embodiment, referring to Fig. 3, in step sl, camera 1 is one, and camera 1 is fixedly installed in the one of fork ear 3
Side simultaneously guarantees do not have relative motion between camera 1 and fork ear 3, and the position of camera 1 can guarantee the profile for entirely pitching ear pin hole 31
It is fallen into the profile of auricle pin hole 41 in the coverage of camera 1.Preferably, camera is fixed on to the axis for making the camera lens of camera
The position being overlapped with the axis of fork ear pin hole.
In one embodiment, it may further comprise the step of: S1.1 between step S1 and step S2 referring to Fig. 3 to Fig. 5, will pitch
Ear is inserted into fork ear pin hole 31 with accessory 5 with interference fit type, which has an energy in axial centerline with accessory 5
The pin hole 53 of light transmission；S1.2 opens light source 2, and the image of fork ear pin hole 31 is shot using camera 1, to the image of fork ear pin hole 31
It is handled to obtain the coordinate of the center of circle of the round spot formed after 53 light transmission of pin hole in the picture, is denoted as O0, then the fork ear is used
Accessory 5 takes out；And S1.3, auricle is inserted into auricle pin hole 41 with accessory 6 with interference fit type, auricle accessory 6
Axial centerline have one can light transmission pin hole 63, subsequent step S2 into step S5 the auricle with accessory 6 not
Taking-up further takes out after fork ear pin hole 31 and auricle pin hole 41 are coaxial；In step s 4, image procossing obtains auricle pin hole 41
In auricle accessory 6 63 light transmission of pin hole after the coordinate of the center of circle of round spot that is formed in the picture, be denoted as O1；In step S5,
Compare O0And O1, it is judged as that fork ear pin hole 31 and auricle pin hole 41 are coaxial if the two is equal；Otherwise fork ear pin hole 31 and auricle pin
Hole 41 is not coaxial, by comparing O when pitching ear pin hole 31 and not coaxial auricle pin hole 410And O1Coordinate obtains 41 axis of auricle pin hole
The offset direction of opposite fork 31 axis of ear pin hole.
Further, referring to Fig. 6, in step S1.1, fork ear accessory 5 is the cylindrical body with pin hole 53, and fork ear is used
The axis of accessory 5 and the axis of fork ear pin hole 31 are overlapped, and are pitched ear with the cylindrical surface of accessory 5 and are provided with annular groove 51, annular groove 51
Interior card sets the annular resilient collar 52 for protruding from the cylindrical surface of fork ear accessory 5, to realize fork ear with accessory 5 to be interference fitted
Mode is inserted into fork ear pin hole 31.Referring to Fig. 7, in step S1.3, auricle accessory 6 is the cylindrical body with pin hole 63, ear
The axis of piece accessory 6 and the axis of auricle pin hole 41 are overlapped, and auricle is provided with annular groove 61 with the cylindrical surface of accessory 6, annular
Card sets the annular resilient collar 62 on the cylindrical surface that one protrudes from auricle accessory 6 in slot 61, to realize auricle accessory 6 with interference
Fit system is inserted into auricle pin hole 41.
In one embodiment, referring to Fig. 8, in step sl, camera 1 is one, and camera 1 is fixedly installed on camera frame 7,
Camera frame 7 can move in perpendicular to pin hole axial plane, so that the opposite fork ear 3 of camera 1 moves, be installed on camera frame 7
1 visual field of camera can only shoot one section of circular arc；In step s3, by camera frame 7 perpendicular to the shifting in pin hole axial plane
Dynamic, from multiple symmetric positions of fork ear pin hole 31 and auricle pin hole 41 shooting pin hole circumference circular arc；In step s 4, it extracts
Feature be at each symmetric position fork ear pin hole 31 and auricle pin hole 41 edge circular arc；In step s 5, if it is described more
One section of circular arc can only be all extracted in the image that a symmetric position is shot, then pitches ear 3 and auricle pin hole 41 is coaxial, if wherein
There are two and the above position can extract two circular arcs not being overlapped, then illustrate to pitch ear pin hole 31 and the difference of auricle pin hole 41
Axis obtains misalignment of axe direction the location of when combining camera 1 is shot.Further, in step s3, described referring to Fig. 8
Multiple symmetric positions can be 90 degree of equally spaced 4 positions, but it is unlimited in this way, camera 1 can be also moved to by camera frame 7 it is other
Symmetric position appropriate is shot.
In one embodiment, referring to Fig. 9, in step sl, when camera 1 is more, the arrangement point of 1 linear array of the more cameras
It is not fixedly mounted in multiple symmetric positions of fork ear pin hole 31 and guarantees do not have relative motion between camera 1 and fork ear 3, every
1 visual field of camera can only all shoot one section of circular arc on pin hole circumference；In step s3, by the more cameras 1 respectively from fork
The multiple symmetric position of ear pin hole 31 and auricle pin hole 41 shoots the circular arc on pin hole circumference；In step s 4, extraction
Feature is the edge circular arc of fork the ear pin hole 31 and auricle pin hole 41 at each symmetric position；In step s 5, if described more
Camera 1 can only all extract a circular arc, then pitch ear pin hole 31 and auricle pin hole 41 is coaxial；If wherein having two and the above camera
1 can extract two circular arcs not being overlapped, then illustrates to pitch ear pin hole 31 and auricle pin hole 41 not coaxially, in conjunction with the more phases
The bias direction of opposite fork 31 axis of ear pin hole of 41 axis of auricle pin hole is obtained the location of when machine 1 is shot.Further, join
According to Fig. 9, in step sl, camera 1 be 4, the multiple symmetric position can be 90 degree of equally spaced 4 positions, but it is unlimited such as
This, 4 cameras can also be fixed to other symmetric positions appropriate and be shot.
Claims (2)
1. a kind of fork ear auricle assembly pin hole method for measuring coaxiality, which is characterized in that comprising steps of
Camera (1) and light source (2) are installed on the two sides of fork ear pin hole (31) along pin hole axis respectively, issue light source (2) by S1
Light-transmissive fork ear pin hole (31) by camera (1) capture；
Auricle (4) is fitted into fork ear (3) and pitches ear auricle assembly to constitute by S2, makes auricle pin hole (41) and fork ear pin hole
(31) it partially overlaps, light can be penetrated；
S3 is opened light source (2), shoots the pin hole image of fork ear auricle assembly from pin hole axis direction using camera (1)；
S4, image procossing simultaneously extract required feature；
S5 judges to pitch ear pin hole (31) and whether auricle pin hole (41) is coaxial, if not coaxial, provides by the feature of extraction
The offset direction of opposite fork ear pin hole (31) axis of auricle pin hole (41) axis；
Wherein, in step sl, camera (1) is one, and camera (1) is fixedly installed on camera frame (7), and camera frame (7) can
It is moved in perpendicular to pin hole axial plane, so that opposite fork ear (3) movement of camera (1), the camera being installed on camera frame (7)
(1) visual field can only shoot one section of circular arc；
In step s3, by camera frame (7) perpendicular to the movement in pin hole axial plane, from the multiple of fork ear pin hole (31)
Circular arc on the pin hole circumference of symmetric position shooting fork ear auricle assembly, and the multiple symmetric position is 90 degree equally spaced
4 positions；
In step s 4, the feature of extraction is the edge circle of the fork ear pin hole (31) and auricle pin hole (41) at each symmetric position
Arc；
In step s 5, if can only all extract one section of circular arc in the image that the multiple symmetric position is shot, ear is pitched
(3) and auricle pin hole (41) coaxially, if wherein there are two and the above position can extract two circular arcs not being overlapped, illustrate
It is not coaxial to pitch ear pin hole (31) and auricle pin hole (41), obtains misalignment of axe direction the location of when combining camera (1) is shot.
2. fork ear auricle assembly pin hole method for measuring coaxiality according to claim 1, which is characterized in that in step S5
In, if fruit fork ear pin hole (31) and auricle pin hole (41) be not coaxial, then auricle (4) are also adjusted in step s 2 and are pitched ear (3)
Assembly, repeats step S3 to step S5, until fork ear pin hole (31) and auricle pin hole (41) are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044615.4A CN107764210B (en) | 2015-10-20 | 2015-10-20 | Pitch ear auricle assembly pin hole method for measuring coaxiality |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510681320.2A CN105300322B (en) | 2015-10-20 | 2015-10-20 | Pitch ear auricle assembly pin-and-hole method for measuring coaxiality |
| CN201711044615.4A CN107764210B (en) | 2015-10-20 | 2015-10-20 | Pitch ear auricle assembly pin hole method for measuring coaxiality |
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| CN201510681320.2A Division CN105300322B (en) | 2015-10-20 | 2015-10-20 | Pitch ear auricle assembly pin-and-hole method for measuring coaxiality |
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| CN107764210A CN107764210A (en) | 2018-03-06 |
| CN107764210B true CN107764210B (en) | 2019-07-12 |
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| CN201711044615.4A Active CN107764210B (en) | 2015-10-20 | 2015-10-20 | Pitch ear auricle assembly pin hole method for measuring coaxiality |
| CN201711043834.0A Active CN107860340B (en) | 2015-10-20 | 2015-10-20 | Pitch ear auricle assembly pin hole method for measuring coaxiality |
| CN201510681320.2A Active CN105300322B (en) | 2015-10-20 | 2015-10-20 | Pitch ear auricle assembly pin-and-hole method for measuring coaxiality |
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| CN201510681320.2A Active CN105300322B (en) | 2015-10-20 | 2015-10-20 | Pitch ear auricle assembly pin-and-hole method for measuring coaxiality |
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| CN106272414B (en) * | 2016-08-26 | 2018-05-29 | 清华大学 | Pitch ear auricle assembling method of servo-controlling |
| CN106767556B (en) * | 2016-12-26 | 2023-06-06 | 重庆越发机械制造有限公司 | Concentricity detection equipment for high-precision gear shifting fork |
| CN108453564B (en) * | 2018-03-05 | 2019-12-03 | 上海理工大学 | The vision inspection apparatus and method of Ball-screw in NC Machine Tools assembly coaxiality error |
| CN109373894B (en) * | 2018-09-27 | 2020-06-09 | 南京航空航天大学 | Automatic positioning method for aircraft component connection intersection point hole system based on distributed monocular vision |
| CN111923044B (en) * | 2020-07-31 | 2021-11-26 | 中铁建电气化局集团第一工程有限公司 | Accurate installation method and device for pin shaft for machining wrist arm |
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| CN85200044U (en) * | 1985-04-01 | 1985-12-20 | 清华大学 | Photoeectric target for testing the alignment of high-aperture axes |
| IT1250341B (en) * | 1991-11-15 | 1995-04-07 | PROCEDURE AND EQUIPMENT FOR MEASURING THE GEOMETRIC CHARACTERISTICS OF NOMINALLY CYLINDRICAL GUIDING STRUCTURES. | |
| JP2000131187A (en) * | 1998-10-23 | 2000-05-12 | Sumitomo Electric Ind Ltd | Device for measuring eccentricity of optical fiber connector |
| CN2781328Y (en) * | 2005-03-23 | 2006-05-17 | 王庆锋 | Hole-hole alignment instrument |
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- 2015-10-20 CN CN201711044615.4A patent/CN107764210B/en active Active
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| Publication number | Publication date |
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| CN107860340A (en) | 2018-03-30 |
| CN107860340B (en) | 2019-07-12 |
| CN105300322A (en) | 2016-02-03 |
| CN107764210A (en) | 2018-03-06 |
| CN105300322B (en) | 2018-02-02 |
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