CN109307678A - A kind of taper spinning part ridging defect on-line measuring device and method - Google Patents

A kind of taper spinning part ridging defect on-line measuring device and method Download PDF

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Publication number
CN109307678A
CN109307678A CN201811272220.4A CN201811272220A CN109307678A CN 109307678 A CN109307678 A CN 109307678A CN 201811272220 A CN201811272220 A CN 201811272220A CN 109307678 A CN109307678 A CN 109307678A
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CN
China
Prior art keywords
light source
measuring device
line measuring
spinning part
ccd camera
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
CN201811272220.4A
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Chinese (zh)
Inventor
肖刚锋
夏琴香
李永婷
程秀全
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South China University of Technology SCUT
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South China University of Technology SCUT
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Publication date
Application filed by South China University of Technology SCUT filed Critical South China University of Technology SCUT
Priority to CN201811272220.4A priority Critical patent/CN109307678A/en
Publication of CN109307678A publication Critical patent/CN109307678A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/95Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/8851Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges

Abstract

The invention discloses a kind of taper spinning part ridging defect on-line measuring device and methods;Including CCD camera, camera lens, light source, light source controller, computer, encoder, PLC controller and mounting bracket, polishing is carried out using three area sources, is arranged according to horizontal line in 60 °, 90 °, 120 ° of angles.Every 180 ° of the rotation of Tapered Cup will pass through encoder and PLC controller triggering camera acquisition image, and be saved in computer and carry out image procossing.By image preprocessing, spinning part edge contour extract, edge contour determine and etc. can effectively judge whether spinning part wrinkles.

Description

A kind of taper spinning part ridging defect on-line measuring device and method
Technical field
The present invention relates to plastic processing spin forming technique field more particularly to a kind of taper spinning part ridging defect are online Detection device and method.
Background technique
Tapered Cup is a kind of important structural member, is widely applied to Aeronautics and Astronautics, automobile, hardware and national defence.It cuts Cutting spinning is one of the valid shaping method for shaping Tapered Cup, has many advantages, such as that small forming force, chipless, precision are high.Flange rises Wrinkle one of most important defect when being shear spinning forming, will seriously affect going on smoothly for spinning process, even results in spinning Forming failure.Therefore prevent and the generation of control ridging defect is of crucial importance for Tapered Cup forming.
It realizes that the on-line checking of ridging defect be the premise for controlling ridging defect, corrugation is examined in process Survey can when wrinkling not serious timely adjusting process parameter, avoid corrugation from deteriorating, reduce the generation of waste product;When corrugation without When method avoids, stop processing in time, improves production efficiency.Ridging defect relies primarily on artificial observation to identify at present, and spinning When forming, part is in high speed rotation state in processing, and manual identified error rate is high, standard is different, can not adapt to spinning intelligence The requirement of energyization development.Therefore, there is an urgent need to explore Tapered Cup ridging defect on-line checking.
Summary of the invention
It is scarce to provide a kind of taper spinning part corrugation for the shortcomings that it is an object of the invention to overcome the above-mentioned prior art and deficiency It is trapped in line detector and method, realizes the fast and effective identification of ridging defect, Tapered Cup production efficiency is improved and product is qualified Rate lowers production cost.
The present invention is achieved through the following technical solutions:
A kind of taper spinning part ridging defect on-line measuring device, mounting bracket, light source 3, CCD including gantry frame structure Camera 1;
Mounting bracket includes two support columns 9 and the moved cross beam moving up and down that is mounted between two support columns 9 10;
The light source 3 is made of the identical arbitrary source in " product " font layout of three structures, i.e. two bilateral symmetries Arrangement, one is located at their top;Wherein, symmetrical two light sources are separately connected by two light source fixed transverse rods 13 On two support columns 9;Third light source is connected on moved cross beam 10 by a light source fixed transverse rod;
The CCD camera 1 is mounted on moved cross beam 10 by one piece of flexible connection bracket 12 with multiple threaded holes.
The taper spinning part ridging defect on-line measuring device further include light source controller 4, computer 5, encoder 6, PLC controller 7 and the Tapered Cup 15 being mounted in shaft 11;The Tapered Cup 15 is located at the side-lower of light source 3;The encoder 6 are fixed in the shaft 11 of Tapered Cup 15;
Wherein, light source 3 is connected with the light source controller 4 of controller brightness;Encoder 6 respectively with PLC controller 7 and calculate Machine 5 is connected.
The arbitrary source is the rectangle plane light source that three LED array are constituted;Respectively according to horizontal line in 60 °, 90 °, 120 ° of angle arrangements;
Include one piece of articulated slab 14 on the light source fixed transverse rod, there are multiple threaded holes thereon, light source 3 is bolted On articulated slab 14.
Every 180 ° of the rotation of Tapered Cup 15, will pass through encoder 6 and PLC controller 7 triggers CCD camera 1 and acquires image, And it is saved in computer.
The CCD camera 1 is fixed on moved cross beam 10 by being flexibly connected bracket 12.
The front end of the CCD camera 1 is equipped with camera lens 2.
The operation method of taper spinning part ridging defect on-line measuring device of the present invention includes the following steps: using spinning The blank of Tapered Cup 15 is clamped on core model by the tail top of forming machine tool, is then started main shaft, is required according to spinning process, control Spinning roller is by specified track movement;Position and the irradiating angle that light source 3 is adjusted by light source fixed transverse rod 13 and articulated slab 14, lead to It crosses and moves up and down moved cross beam 10 and rotation flexible connection bracket 12, adjust the view position of CCD camera 1;In forming process In, blank image is shot using CCD camera 1, image acquisition time is controlled by encoder 6 and PLC controller 7, is made Blank 180 ° of shootings of every rotation are primary;The blank image of the spinning of acquisition is subjected to image preprocessing and extracts blank Whether mouth rim contour line connects the oral area profile of adjacent two images, be that waveform determines spinning by oral area profile Whether part wrinkles.
The present invention compared with the existing technology, have following advantages and effects
(1) pass through taper spinning part (Tapered Cup 15) ridging defect on-line measuring device, it can be achieved that real-time online obtains rotation Casting die image, high degree of automation.
It (2), can be by obtaining different angle using ridging defect on-line measuring device compared with traditional artificial observation Image, by control shooting time, obtain the omnidirectional images of part, conducive to postorder quickly, accurately detect ridging defect, mention The high efficiency and precision of detection, saves labour turnover.
(3) online defect detecting device can be by acquiring each angular image, and real-time monitoring wrinkles situation, for staff and When grasp part forming quality, can timely adjusting process, reduce rejection rate, improve production efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of taper spinning part ridging defect on-line measuring device of the present invention;
Fig. 2 is the structural form schematic diagram of Tapered Cup in embodiment.
Specific embodiment
The present invention is more specifically described in detail combined with specific embodiments below.
Embodiment
As shown in Figs. 1-2.The invention discloses a kind of taper spinning part ridging defect on-line measuring devices, including portal frame Mounting bracket, light source 3, the CCD camera 1 of structure;
Mounting bracket includes two support columns 9 and the moved cross beam moving up and down that is mounted between two support columns 9 10;
The light source 3 (area array light source) is made of the identical arbitrary source in " product " font layout of three structures (has 6 A freedom degree), i.e., two are symmetrically arranged, and one is located at their top;Wherein, symmetrical two light sources pass through two Root light source fixed transverse rod 13 is connected on two support columns 9;Third light source is connected to by a light source fixed transverse rod On moved cross beam 10;
The CCD camera 1 is mounted on moved cross beam 10 by one piece of flexible connection bracket 12 with multiple threaded holes.
The taper spinning part ridging defect on-line measuring device further include light source controller 4, computer 5, encoder 6, PLC controller 7 and the Tapered Cup 15 being mounted in shaft 11;The Tapered Cup 15 is located at the side-lower of light source 3;The encoder 6 are fixed in the shaft 11 of Tapered Cup 15;
Wherein, light source 3 is connected with the light source controller 4 of controller brightness;Encoder 6 respectively with PLC controller 7 and calculate Machine 5 is connected.
The arbitrary source is the rectangle plane light source that three LED array are constituted (for carrying out polishing to Tapered Cup);Point It is not arranged according to horizontal line in 60 °, 90 °, 120 ° of angles;It include one piece of articulated slab 14 on the light source fixed transverse rod, thereon There are multiple threaded holes, light source 3 is bolted on articulated slab 14;It can be rotated with the hinged place of articulated slab.
Every 180 ° of the rotation of Tapered Cup 15, will pass through encoder 6 and PLC controller 7 triggers CCD camera 1 and acquires image, And it is saved in computer.
The CCD camera 1 is fixed on moved cross beam 10 by being flexibly connected bracket 12.It can be slided along moved cross beam 10 It is dynamic, and the fine tuning of upper and lower position can be carried out.
The front end of the CCD camera 1 is equipped with camera lens 2.
The operation method of taper spinning part ridging defect on-line measuring device of the present invention includes the following steps: using spinning The blank of Tapered Cup 15 is clamped on core model by the tail top of forming machine tool, is then started main shaft, is required according to spinning process, control Spinning roller is by specified track movement;Position and the irradiating angle that light source 3 is adjusted by light source fixed transverse rod 13 and articulated slab 14, lead to It crosses and moves up and down moved cross beam 10 and rotation flexible connection bracket 12, adjust the view position of CCD camera 1;In forming process In, blank image is shot using CCD camera 1, image acquisition time is controlled by encoder 6 and PLC controller 7, is made Blank 180 ° of shootings of every rotation are primary;The blank image of the spinning of acquisition is subjected to image preprocessing and extracts blank Whether mouth rim contour line connects the oral area profile of adjacent two images, be that waveform determines spinning by oral area profile Whether part wrinkles.
As described above, the present invention can be better realized.
Embodiment of the present invention are not limited by the above embodiments, other are any without departing from Spirit Essence of the invention With changes, modifications, substitutions, combinations, simplifications made under principle, equivalent substitute mode should be, be included in of the invention Within protection scope.

Claims (7)

1. a kind of taper spinning part ridging defect on-line measuring device, it is characterised in that: mounting bracket including gantry frame structure, Light source (3), CCD camera (1);
Mounting bracket includes two support columns (9) and the moved cross beam moving up and down being mounted between two support columns (9) (10);
The light source (3) is made of the identical arbitrary source in " product " font layout of three structures, i.e. two bilateral symmetry cloth It sets, one is located at their top;Wherein, symmetrical two light sources are separately connected by two light source fixed transverse rods (13) On two support columns (9);Third light source is connected on moved cross beam (10) by a light source fixed transverse rod;
The CCD camera (1) is mounted on moved cross beam (10) by one piece of flexible connection bracket (12) with multiple threaded holes On.
2. taper spinning part ridging defect on-line measuring device according to claim 1, it is characterised in that: the taper spinning Part ridging defect on-line measuring device further include light source controller (4), computer (5), encoder (6), PLC controller (7) and The Tapered Cup (15) being mounted on shaft (11);The Tapered Cup (15) is located at the side-lower of light source (3);The encoder (6) It is fixed in the shaft (11) of Tapered Cup (15);
Wherein, light source (3) is connected with the light source controller (4) of controller brightness;Encoder (6) respectively with PLC controller (7) and Computer (5) is connected.
3. taper spinning part ridging defect on-line measuring device according to claim 2, it is characterised in that: the arbitrary source The rectangle plane light source constituted for three LED array;It is arranged respectively according to horizontal line in 60 °, 90 °, 120 ° of angles;
Include one piece of articulated slab (14) on the light source fixed transverse rod, there are multiple threaded holes thereon, light source (3) is bolted On articulated slab (14).
4. taper spinning part ridging defect on-line measuring device according to claim 3, it is characterised in that: the Tapered Cup (15) every 180 ° of rotation will pass through encoder (6) and PLC controller (7) triggering CCD camera (1) acquisition image, and be saved in meter In calculation machine (5).
5. taper spinning part ridging defect on-line measuring device according to claim 4, it is characterised in that: the CCD camera (1) it is fixed on moved cross beam (10) by being flexibly connected bracket (12).
6. taper spinning part ridging defect on-line measuring device according to claim 5, it is characterised in that: the CCD camera (1) front end is equipped with camera lens (2).
7. the operation method of taper spinning part ridging defect on-line measuring device described in claim 6, it is characterised in that including such as The blank of Tapered Cup (15): being clamped on core model using the tail top of spin forming machine, then start main shaft by lower step, according to Spinning process requirement, control spinning roller is by specified track movement;Light is adjusted by light source fixed transverse rod (13) and articulated slab (14) The position in source (3) and irradiating angle are flexibly connected bracket (12) by moving up and down moved cross beam (10) and rotation, adjust The view position of CCD camera (1);In forming process, blank image is shot using CCD camera (1), passes through encoder (6) and PLC controller (7) controls image acquisition time, keeps blank 180 ° of shootings of every rotation primary;By the blank of the spinning of acquisition Part image carries out image preprocessing and extracts blank mouth rim contour line, and the oral area profile of adjacent two images is connected It connects, whether is that waveform determines whether spinning part wrinkles by oral area profile.
CN201811272220.4A 2018-10-30 2018-10-30 A kind of taper spinning part ridging defect on-line measuring device and method Pending CN109307678A (en)

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CN110567973A (en) * 2019-09-27 2019-12-13 济南大学 Piston detection platform and method based on image acquisition
CN111965199A (en) * 2020-08-05 2020-11-20 杭州农鑫科技有限公司 Automatic light-focusing light-transmitting flat plate defect detection device

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CN110567973A (en) * 2019-09-27 2019-12-13 济南大学 Piston detection platform and method based on image acquisition
CN111965199A (en) * 2020-08-05 2020-11-20 杭州农鑫科技有限公司 Automatic light-focusing light-transmitting flat plate defect detection device

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