CN207366467U - A kind of surface defect real-time detection apparatus for increasing material manufacturing - Google Patents
A kind of surface defect real-time detection apparatus for increasing material manufacturing Download PDFInfo
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- CN207366467U CN207366467U CN201721465708.XU CN201721465708U CN207366467U CN 207366467 U CN207366467 U CN 207366467U CN 201721465708 U CN201721465708 U CN 201721465708U CN 207366467 U CN207366467 U CN 207366467U
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- lens group
- increasing material
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- surface defect
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Abstract
The utility model is a kind of real-time detection apparatus for increasing material manufacturing surface defects of products, including lighting module, lens group and sensor assembly, transmission module and the computer processing unit being connected with computer processing unit；The lighting module works in lens group shooting process；The lens group includes one or more optical lens；The transmission module includes stepper motor, screw and corresponding control circuit, for changing the height of lens group so that lens group can follow the manufacturing process for increasing material product all the time；The computer processing unit is used for the image for receiving lens group collection, judges the surface defect type of increasing material product and position by the image co-registration of collection and then by corresponding image processing algorithm and records.The utility model can obtain 360 degree of surface images for increasing material product at the same time, comprehensively, without dead angle detect the real-time detection that the surface defect such as product surface depression, raised, discoloration carries out high-accuracy high-resolution, improve the detection speed of system.
Description
Technical field
Increases material manufacturing technology field is the utility model is related to, the more particularly to surface defect for increasing material manufacturing detects in real time
Device.
Background technology
The appearance of increases material manufacturing technology is considered as the once epoch-making technique skill in 21 century machine building industry field
Art is reformed, and powerful impact and shock are brought to modern society.Increases material manufacturing technology set digital modeling techniques, Electrical Control
The advantage of the multinomial new and high technologies such as technology, information technology, material science and chemistry processed, has very compared with tradition machinery manufacturing technology
More advantages.
Increases material manufacturing technology（Additive Manufacturing, AM）It is a kind of fast free shaping, manufactures three-dimensional in fact
The new technology of body part, also referred to as rapid prototyping manufacturing（Rapid Prototyping）, 3D printing（3D Printing）, entity
Freely manufacture（Solid Free-form Fabrication）Deng.Wherein 3D printing is one of most common technical name.With biography
The Machine Manufacturing Technology of system（Subtract material manufacture and wait material to manufacture）Compare, increases material manufacturing technology has that many they are incomparable
Advantage, for example, quickly, environmental protection, without manufacturing mould in advance, it might even be possible to rapid shaping etc..Increase material product producing and making
Some defects can be inevitably produced during, it is therefore desirable to it is detected at the first time.
At present, the detection for increasing material product is concentrated mainly on the raw material detection of increasing material manufacturing raw material, increases material product
Ultrasound detection, ray detection etc..But the emphasis of these detections are the internal flaws for increasing material product, such as its internal residual stress point
Cloth, material porosity etc., and for some increasing material products higher to surface requirements still without it is adaptable the defects of detection side
Method.
In order to meet the real-time testing requirements in surface for the increasing material product more paid attention to surface defect, whole increasing material is improved
The work efficiency of manufacturing process, the detection method being combined using common lens with stepper motor, using multi-cam at the same time
Collection surface image information, and the production for increasing material product can be followed, while meet detecting system precision and speed
Requirement on degree.
Utility model content
The utility model utility model aims to overcome that the shortcomings of the prior art, there is provided one kind is used to increase material system
Increase the real-time detection apparatus of the surface defect of material product during making, concrete technical scheme is as follows.
A kind of surface defect real-time detection apparatus for increasing material manufacturing, it include computer processing unit and respectively with meter
Lighting module, lens group and sensor assembly, transmission module and the computer processing unit that calculation machine processing unit connects；The photograph
Bright module is LED light source and ON-OFF control circuit, works in lens group shooting process；The lens group includes one or more light
Learn camera lens；The transmission module includes stepper motor, screw and corresponding control circuit, for changing the height of lens group,
Lens group is enabled to follow the manufacturing process for increasing material product all the time；The computer processing unit is used to receive lens group collection
Image, by the image co-registration of collection and then by corresponding image processing algorithm come judge increase material product surface defect
Type and position simultaneously record.
Further, the LED in the LED light source according to queue latticed form ordered arrangement together, be integrated in same
Illuminator in plane, or it is integrated into the illuminator for being conducive to optically focused with radian.
Further, the position of LED light source and camera lens are coaxial or between a plurality of lenses.
Further, the stepper motor is controlled as the driving for changing lens group height by a control circuit
System；After lens group has shot a wheel image, computer processing unit decides whether to carry according to the printing progress for increasing material product
Lens group height is risen, so as to control stepper motor to move；The rotation of stepper motor is by the screw that is connected with lens group, by camera lens
Group is promoted to the height of needs, lens group is collected the surface for the part that product newly prints, and carries out next round image
Collection, this ensures that lens group can collect all the time increases the newest surface image of material product, realizes the reality of surface defect
When detect.
Further, the stepper motor is one or more combination.
Further, the control signal of stepper motor is associated with the z-axis information of increasing material manufacturing equipment.
Lens group can obtain the image of 360 degree of target element device side by a plurality of lenses；The arrangement mode of camera lens according to
Equally spaced mode is placed.
Further, LED light source is controlled by an ON-OFF control circuit, and ON-OFF control circuit is according to computer disposal
The order of unit control response cooperates with front shutter；Camera lens cooperated with LED light source synchronous works, and once flash of light obtains a figure
Picture；The image of acquisition is uploaded to computer processing unit by sensor and carries out data processing by the image that lens group is shot.
Further, the computer processing unit is used for the analyzing and processing for obtaining image, by exporting response command control
The working status of stepper motor processed, lens group and LED light source；Computer processing unit is that the control inputted according to external equipment is believed
The working status of number adjusting stepper motor and/or camera lens, comprises the following steps that：
1）The shutter frequency of camera lens is set according to the climbing speed of 3D printing and to LED light source array switching requirements；
2）When entering Image Acquisition link, lens group is shot, and 360 degree of side of component image is obtained, by sensing
Device is sent in computer processing unit；
3）The image collected is carried out by image co-registration by computer processing unit, by Computer Image Processing algorithm
（Such as the detection method of the defects of based on neutral net, based on support vector machines the defects of detection method and based on fuzzy theory
The defects of detection method etc.）Judge whether surface defect, if defective, the species and position of recording the defect are gone forward side by side
Enter the 4th）Step, is otherwise directly entered the 4th）Step；
4）Corresponding control and is provided to determine whether need to lift the height of lens group according to manufacture progress by computer
Signal controls the rotation of stepper motor, so that lens group follows manufacture progress all the time, reaches detection surface defect in real time
Purpose.
By computer according to manufacture progress to determine whether need to lift the height of lens group, and provide corresponding control letter
Number the rotation of stepper motor is controlled, so that lens group follows manufacture progress all the time, reach the mesh of detection surface defect in real time
's.
Compared with prior art, the beneficial effects of the utility model are：During increasing material manufacturing, pass through one or more
The lens group collection image of a optical lens composition, is handled by image co-registration, can obtain 360 degree of tables for increasing material product at the same time
Face image, comprehensively, without dead angle detects the surface defect such as product surface depression, raised, discoloration and carries out high-accuracy high-resolution
Detection, improves the detection speed of system.Change the height of camera lens using stepper motor at the same time so that lens group can adopt at any time
Collection increases the newest surface image of material product, reaches the effect detected in real time.
Brief description of the drawings
Fig. 1 is a kind of embodiment overall structure of surface defect real-time detection apparatus for increasing material manufacturing of the utility model
Schematic diagram；
Fig. 2 is a kind of visible LED light source schematic diagram in embodiment；
Fig. 3 is lens group and LED light source arrangement schematic diagram in example；
Fig. 4 is the lens group and LED light source arrangement schematic diagram of another embodiment；
Fig. 5 is a kind of fundamental diagram of surface defect real-time detection apparatus for increasing material manufacturing in example.
Embodiment
It is described further below in conjunction with the specific implementation of attached drawing and example to the utility model, but the reality of the utility model
Not limited to this is applied and protected, is that those skilled in the art can join if not describing part in detail especially it is noted that having below
Realized according to the prior art.
This example is a kind of be used to increase the composition of material product surface defect real-time detection apparatus be：Illuminate mould, lens group and biography
Sensor module, transmission module and computer processing unit.The lighting module is LED light source and ON-OFF control circuit, is worked in
Lens group shooting process；The lens group includes one or more ordinary optical camera lenses, and computer processing unit is right after the picture is taken
The image of lens group collection is merged, and fault detection analysis is carried out to the image after fusion.The transmission module includes stepping
Motor, screw or other mechanical devices and corresponding control circuit, for changing the height of lens group so that lens group can
All the time the manufacturing process for increasing material product is followed；The computer processing unit is used for the image for receiving lens group collection, is melted
Close and then judge the surface defect type of increasing material product and position by corresponding image processing algorithm and record.Such as figure
1, it is a kind of application example overall schematic figure of the utility model detection device, including printing head 1；Increase material product 2；Camera lens
And sensor 3；Stepper motor 4；Objective table 5；LED light source 6；Screw 7.
This example is irradiated by LED light source to increasing material product, can make up that ambient light is insufficient or non-uniform shortcoming,
Product surface is obtained uniformly and the appropriate illumination of intensity, the image that lens group gathers is become apparent from and surely
It is fixed.
Preferably, the LED light source can select white or higher other exposure intensities light source.
Preferably, LED light source according to queue latticed form ordered arrangement together, formed a plane assorted LED light
Source illuminator, can be integrated in illuminator in same plane, can also be integrated into the illuminator for being conducive to optically focused with radian.
Preferably, the placement of LED light source can select coaxial with camera lens, can also be placed between two camera lenses.
The utility model uses stepper motor as the driving for changing lens group height.It is carried out by a control circuit
Control.After lens group has shot a wheel image, computer processing unit decides whether according to the printing progress for increasing material product
Lens group height is lifted, so as to control stepper motor to move.The rotation of stepper motor is by the screw that is connected with lens group, by mirror
Head group lifts certain height, can collect the surface for the part that product newly prints, and carries out next round Image Acquisition,
This ensures that lens group can collect all the time increases the newest surface image of material product, the real-time inspection of surface defect is realized
Survey.
Preferably, the stepper motor of transmission system can be one or more combinations.
Preferably, the control signal of stepper motor can be associated with the z-axis information of increasing material manufacturing equipment.
It can obtain the image of 360 degree of target element device side by a plurality of lenses.Image is gathered at the same time using a plurality of lenses
Compared to single camera lens substantially increase collecting efficiency, while also so that the mechanical structure of system and motion control are simpler
It is single.
Preferably, the number of camera lens can be determined according to the specification for increasing material product come specific, as long as meeting that system can be collected
Whole side images of product.
Preferably, the arrangement mode of camera lens can be placed according to equally spaced mode.
LED light source（Red, white etc.）The illuminator of array composition is controlled by an ON-OFF control circuit.LED light
The switch in source is cooperated by ON-OFF control circuit according to the order of computer control response and front shutter.Lens group shoots to obtain
Image by sensor by the image of acquisition be uploaded to computer processing unit carry out data processing.
Preferably, ON-OFF control circuit must control LED light source and camera lens at the same time according to computer response command.
Preferably, the work for the surface defect real-time detection apparatus of increasing material manufacturing is exemplified below.
1) lens group is the combination of one or more ordinary optical camera lenses, is cooperated.
2) lighting module is ordinary white or other color LED light sources, arranges in pairs or groups and uses with camera lens, and image is obtained in camera lens
Time used.
3) stepper motor be used for moving lens group height, enable lens group follow the manufacture of product demand and on
Rise.
4）Ordinary optical camera lens cooperated with LED light source synchronous works, and once flash of light obtains an image.
5）Stepper motor is connected by screw or other mechanical devices with lens group, reaches moving lens in vertical direction
The effect of head group.
6）Above-mentioned 1）、2）Integrated equipment can be used as to cooperate with the optical lens, light source and stepper motor 3) mentioned,
The real-time image acquisition with product manufacturing progress.
7）The image that different camera lenses collect is sent into computer and carries out image co-registration processing and analysis, draws corresponding surface
Defect analysis result.
8）With the process of increasing material manufacturing, system judges whether lens group needs to rise, if desired according to the progress of setting
Then stepper motor operation special time, if need not if camera lens collection image, carry out surface defect point again after carrying out image co-registration
Analysis.
9）Image is gathered at the same time with multiple optical lens and is detected analysis, improves the accuracy and speed of graphical analysis
Degree, while stepper motor drives the movement of camera lens, ensure that camera lens can collect the surface image of new printing portion all the time, it is real
The requirement of real-time detection is showed.
Claims (7)
1. a kind of surface defect real-time detection apparatus for increasing material manufacturing, it is characterised in that including computer processing unit and divide
Lighting module, lens group and sensor assembly, transmission module and the computer processing unit not being connected with computer processing unit；
The lighting module is LED light source and ON-OFF control circuit, works in lens group shooting process；The lens group include one or
Multiple optical lens；The transmission module includes stepper motor, screw and corresponding control circuit, for changing lens group
Highly so that lens group can follow the manufacturing process for increasing material product all the time；The computer processing unit is used to receive camera lens
The image of group collection, the table of increasing material product is judged by the image co-registration of collection and then by corresponding image processing algorithm
Planar defect type and position simultaneously record.
A kind of 2. surface defect real-time detection apparatus for increasing material manufacturing according to claim 1, it is characterised in that institute
The LED in LED light source is stated according to queue latticed form ordered arrangement together, integrate illuminator in the same plane, or it is integrated
For the illuminator for being conducive to optically focused with radian.
A kind of 3. surface defect real-time detection apparatus for increasing material manufacturing according to claim 2, it is characterised in that LED
The position of light source and camera lens are coaxial or between a plurality of lenses.
A kind of 4. surface defect real-time detection apparatus for increasing material manufacturing according to claim 2, it is characterised in that institute
Stepper motor is stated as the driving for changing lens group height, is controlled by a control circuit；When lens group has shot one
After taking turns image, computer processing unit decides whether to be lifted lens group height according to the printing progress for increasing material product, so as to control
Stepper motor movement processed；Lens group is promoted to the height of needs by the screw that is connected with lens group by the rotation of stepper motor,
Lens group is collected the surface for the part that product newly prints, next round Image Acquisition is carried out, this ensures that mirror
Head group can collect all the time increases the newest surface image of material product, realizes the real-time detection of surface defect.
A kind of 5. surface defect real-time detection apparatus for increasing material manufacturing according to claim 4, it is characterised in that institute
Stepper motor is stated as one or more combinations.
A kind of 6. surface defect real-time detection apparatus for increasing material manufacturing according to claim 1, it is characterised in that mirror
Head group can obtain the image of 360 degree of target element device side by a plurality of lenses；The arrangement mode of camera lens is according to equally spaced side
Formula is placed.
A kind of 7. surface defect real-time detection apparatus for increasing material manufacturing according to claim 1, it is characterised in that LED
Light source is controlled by an ON-OFF control circuit, and ON-OFF control circuit is according to the order of computer processing unit control response and mirror
Head shutter cooperates；Camera lens cooperated with LED light source synchronous works, and once flash of light obtains an image；What lens group was shot
The image of acquisition is uploaded to computer processing unit by sensor and carries out data processing by image.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721444302 | 2017-10-31 | ||
| CN2017214443023 | 2017-10-31 |
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| CN207366467U true CN207366467U (en) | 2018-05-15 |
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| CN201721465708.XU Expired - Fee Related CN207366467U (en) | 2017-10-31 | 2017-11-03 | A kind of surface defect real-time detection apparatus for increasing material manufacturing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741425A (en) * | 2017-10-31 | 2018-02-27 | 华南理工大学 | A kind of surface defect real-time detection apparatus for increasing material manufacturing |
| CN108115282A (en) * | 2017-12-29 | 2018-06-05 | 南京理工大学 | A kind of electric arc-laser compound machine people's increasing material manufacturing system |
| CN108982538A (en) * | 2018-07-12 | 2018-12-11 | 北京星航机电装备有限公司 | A kind of defect of metal material increasing material manufacturing product and metallographic structure detection method |
-
2017
- 2017-11-03 CN CN201721465708.XU patent/CN207366467U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107741425A (en) * | 2017-10-31 | 2018-02-27 | 华南理工大学 | A kind of surface defect real-time detection apparatus for increasing material manufacturing |
| CN108115282A (en) * | 2017-12-29 | 2018-06-05 | 南京理工大学 | A kind of electric arc-laser compound machine people's increasing material manufacturing system |
| CN108115282B (en) * | 2017-12-29 | 2020-12-04 | 南京理工大学 | Additive manufacturing system using laser and electric arc in combined mode and using robot to perform automatic additive manufacturing |
| CN108982538A (en) * | 2018-07-12 | 2018-12-11 | 北京星航机电装备有限公司 | A kind of defect of metal material increasing material manufacturing product and metallographic structure detection method |
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