CN109822478A - A kind of comprehensive detection system and method for automobile axial workpiece - Google Patents
A kind of comprehensive detection system and method for automobile axial workpiece Download PDFInfo
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- CN109822478A CN109822478A CN201910208879.1A CN201910208879A CN109822478A CN 109822478 A CN109822478 A CN 109822478A CN 201910208879 A CN201910208879 A CN 201910208879A CN 109822478 A CN109822478 A CN 109822478A
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Abstract
The invention discloses the present invention a kind of comprehensive detection systems and method of automobile axial workpiece, and the system includes camera motion module, axial workpiece self-clamping module, detection module, computing module and control module；The data model of axial workpiece is carried out slicing profile calculating by the computing module, carries out equidistant calculating sampled point to slicing profile line, and calculate the normal direction at the surface of sampled point place.The direction of the control unit driving camera motion module and axis class self-clamping module, image acquisition unit is right against printout surface.System and method of the invention carry out comprehensive full-automatic image for the outer surface of automobile axial workpiece and obtain, and are calculated the method arrow of outer surface arbitrary point by Slicing Algorithm, guarantee that camera faces part outer surface always in print procedure.
Description
Technical field
The present invention relates to metal parts detection technique fields, more particularly, to a kind of comprehensive detection of automobile axial workpiece
System and method.
Background technique
In the casting process of automobile axial workpiece, some casting flaws are inevitably resulted from, product quality is influenced.
Internal defect in cast detection is an important link in foundry production.Discovery defect can find that defect produces early early
Product save time and cost.If internal flaw is not detected or internal flaw is not detected, these defects may result in pass
The failure of key mechanical part.In order to avoid the influence of human-body fatigue, detection accuracy is improved, intelligent checking system plays in the production line
Important function.
Currently, the detection method of automobile axial workpiece is generally detected by visual light, but due to the limitation of detection system,
The photo under the state can only often be acquired under a certain placement position of axial workpiece, and artificial process is needed to carry out reciprocally
Adjustment, manual operation one side inefficiency, each orientation that on the other hand not can guarantee axial workpiece are all taken, Wu Fabao
Demonstrate,prove the reliability of result.
Summary of the invention
Technical problems to be solved: the object of the present invention is to provide a kind of defects detections of Cast Aluminum Auto-parts Abroad radioscopic image
Method is based on image processing techniques, is identified by the difference of defect and normal configuration in Cast Aluminum Auto-parts Abroad radioscopic image scarce
It falls into, and the defect that will test is counted, Cast Aluminum Auto-parts Abroad criteria of quality evaluation is constructed according to statistical value, to effectively detect
With control product quality.
Technical solution: for above-mentioned problem, the invention discloses a kind of comprehensive detection system of automobile axial workpiece,
Including camera motion module, axial workpiece self-clamping module, detection module, computing module and control module, the detection mould
Block includes:
Image acquisition unit；
Camera motion module；
The data model of axial workpiece is carried out slicing profile calculating by the computing module, is carried out to slicing profile line equidistant
Sampled point is calculated, and calculates the normal direction at the surface of sampled point place；
The direction of the control unit driving camera motion module and axis class self-clamping module, image acquisition unit is right against printing
Part surface；
Preferably, the camera motion module is a DELTA parallel arm platform, and wherein image acquisition unit is connected in camera motion
In module, downwards, camera motion module can provide the movement in tri- directions XYZ to image acquisition unit.
Preferably, the axial workpiece self-clamping module clamps axial workpiece by scroll chuck, and wherein scroll chuck is logical
It crosses motor driven and realizes revolution, so that each detection position of axial workpiece can go to upward position and be detected.
Preferably, described image acquiring unit uses CCD camera.
Preferably, the CCD camera is fixed with print head, according to the focal length of camera model Basler acA 1600-20gm
Range, fixed distance are 260mm ~ 470mm.
Preferably, computing module and control module can integrate in a computer, and chip can also be separately provided.
A kind of comprehensive detection method of automobile axial workpiece, comprising the following steps:
(1) data model of axial workpiece is carried out slicing profile calculating by computing module, is equidistantly counted to slicing profile line
Sampled point is calculated, and calculates the normal direction at the surface of sampled point place；
(2) by after slice sample point coordinate information and law vector information be converted into detection system motion information；
(3) in the detection process, control module to be detected a certain sampled point of axis vertically upward, furthermore camera motion module
So that CCD camera motion is to the face sampling point position, and it is located on its direction of normal；
(4) with the movement of the rotation of three chucking chuck and camera motion module, comprehensive acquisition picture is carried out to detected axis.
The utility model has the advantages that system can be effectively reduced by clamping axial workpiece as axial workpiece self-clamping module by scroll chuck
Cause this.In addition, camera motion module uses DELTA parallel arm platform, wherein image acquisition unit is connected in camera motion
In module, downwards, camera motion module can provide the movement in tri- directions XYZ so that it is convenient to inspection for image acquisition unit
The manufacture and use of examining system.Image acquisition unit improves image using CCD camera and obtains effect.
The advantages that spatial movement flexibility of present invention performance DELTA parallel arm platform and big operation interval, utilize its end
The image acquisition unit of end clamping realizes that the method for outer surface swears shooting.A kind of comprehensive detection of automobile axial workpiece of the invention
System and method carry out comprehensive full-automatic image acquisition for the outer surface of automobile axial workpiece, and will by Slicing Algorithm
The method arrow of outer surface arbitrary point calculates, and guarantees that camera faces part outer surface always in print procedure.
Detailed description of the invention
Fig. 1 is structure and the principle signal of the comprehensive detection system and method for a kind of automobile axial workpiece of the invention
Figure.
In figure: 1, being detected automobile shafts part, 2, CCD camera, 3, camera motion module, 4, axial workpiece self-clamping module.
Specific embodiment
As shown in Figure 1, a kind of comprehensive detection system of automobile axial workpiece of the present embodiment includes: CCD camera 2, phase
Machine motion module 3, axial workpiece self-clamping module 4, wherein 6 pixel resolution of CCD camera is 1236 X 1626, and frame number rate is
20fps。
A kind of comprehensive detection method of automobile axial workpiece of the present embodiment, key step include:
Step 1: automobile shafts class model is converted into STL tri patch format by algorithm software module, and by Slice Software to three
Edged surface piece is sliced.The outer profile of model after being sliced then is extracted, and equidistant calculating sampled point is carried out to slicing profile line,
And the normal direction where calculating sampled point at surface, direction (the printing foreign steamer of CCD camera 2 when which is detection
The outer method arrow of point when wide), detection camera face print surface always when guaranteeing printing with this, and by the sampled point after slice
Coordinate information and law vector information are converted into detection system motion information.
Step 2: control detection platform carries out image acquisition, and control module makes a certain sampled point for being detected axis vertical
Upward, furthermore camera motion module 3 makes CCD camera 2 move to the face sampling point position, and is located on its direction of normal,
With the rotation of axial workpiece self-clamping module 4 and the movement of camera motion module 3, the sampled point being detected on axis 1 is clapped one by one
According to realize to the comprehensive picture collection of detected axis 1.
In conclusion the present embodiment is monitored for automobile axial workpiece outer surface, and pass through Slicing Algorithm for appearance
The method arrow of face arbitrary point calculates, and guarantees that CCD camera 2 faces 1 outer surface of axial workpiece, realization pair always in detection process
The comprehensive picture collection of part.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (7)
1. a kind of comprehensive detection system of automobile axial workpiece, including camera motion module, axial workpiece self-clamping module, detection
Module, computing module and control module, the detection module include: image acquisition unit；Camera motion module；
The data model of axial workpiece is carried out slicing profile calculating by the computing module, is carried out to slicing profile line equidistant
Sampled point is calculated, and calculates the normal direction at the surface of sampled point place；
The direction of the control unit driving camera motion module and axis class self-clamping module, image acquisition unit is right against printing
Part surface.
2. a kind of comprehensive detection system of automobile axial workpiece according to claim 1, which is characterized in that the phase
Machine motion module is a DELTA parallel arm platform, and wherein image acquisition unit is connected in camera motion module, and image obtains single
Downwards, camera motion module can provide the movement in tri- directions XYZ to member.
3. a kind of comprehensive detection system of automobile axial workpiece according to claim 1, which is characterized in that the axis
Class part self-clamping module clamps axial workpiece by scroll chuck, and wherein scroll chuck is realized by motor driven and turned round, so that
Each detection position of axial workpiece can go to upward position and be detected.
4. a kind of comprehensive detection system of automobile axial workpiece according to claim 1, which is characterized in that described image
Acquiring unit uses CCD camera.
5. a kind of comprehensive detection system of automobile axial workpiece according to claim 4, which is characterized in that the CCD
Camera is fixed with print head, and according to the focal range of camera model Basler acA 1600-20gm, fixed distance is
260mm~470mm。
6. a kind of comprehensive detection system of automobile axial workpiece according to claim 1, which is characterized in that computing module
Chip is integrated in a computer or is separately provided with control module.
7. a kind of comprehensive detection method of automobile axial workpiece, which comprises the following steps:
(1) data model of axial workpiece is carried out slicing profile calculating by computing module, is equidistantly counted to slicing profile line
Sampled point is calculated, and calculates the normal direction at the surface of sampled point place；
(2) by after slice sample point coordinate information and law vector information be converted into detection system motion information；
(3) in the detection process, control module to be detected a certain sampled point of axis vertically upward, furthermore camera motion module
So that CCD camera motion is to the face sampling point position, and it is located on its direction of normal；
(4) with the movement of the rotation of three chucking chuck and camera motion module, comprehensive acquisition picture is carried out to detected axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910208879.1A CN109822478A (en) | 2019-03-19 | 2019-03-19 | A kind of comprehensive detection system and method for automobile axial workpiece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910208879.1A CN109822478A (en) | 2019-03-19 | 2019-03-19 | A kind of comprehensive detection system and method for automobile axial workpiece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707692A (en) * | 2020-07-17 | 2020-09-25 | 碳升技术服务(北京)有限公司 | Defect detection method and system for automobile parts and electronic equipment |
| CN115880305A (en) * | 2023-03-08 | 2023-03-31 | 中国计量大学现代科技学院 | Visual detection method and device for surface defects of shaft parts |
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| CN111707692A (en) * | 2020-07-17 | 2020-09-25 | 碳升技术服务(北京)有限公司 | Defect detection method and system for automobile parts and electronic equipment |
| CN115880305A (en) * | 2023-03-08 | 2023-03-31 | 中国计量大学现代科技学院 | Visual detection method and device for surface defects of shaft parts |
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