CN203364775U - Orientation tube parallelism measurement platform - Google Patents
Orientation tube parallelism measurement platform Download PDFInfo
- Publication number
- CN203364775U CN203364775U CN 201320381107 CN201320381107U CN203364775U CN 203364775 U CN203364775 U CN 203364775U CN 201320381107 CN201320381107 CN 201320381107 CN 201320381107 U CN201320381107 U CN 201320381107U CN 203364775 U CN203364775 U CN 203364775U
- Authority
- CN
- China
- Prior art keywords
- measurement
- oriented tube
- module
- image
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides an orientation tube parallelism measurement platform. The orientation tube parallelism measurement platform comprises an illumination system, an auxiliary measurement device, an image acquisition system, a light path system, a communication system and a graphic workstation, wherein the illumination system comprises a light source and an illumination control module, the auxiliary measurement device comprises an auxiliary calibration device and coordinate transformation reference devices at two ends of an orientation tube, and the image acquisition system comprises a camera for shooting the orientation tube and a trigger control module which is used for receiving instruction of the graphic workstation and controlling the camera to shoot. Compared with the prior art, the orientation tube parallelism measurement platform realizes measurement on the orientation tube employing image technology and has properties of high measurement precision and convenient measurement process.
Description
Technical field
The utility model relates to a kind of measuring technique of the depth of parallelism for parallel multiaxis part, relates in particular to a kind of platform of the measurement of paralleism for oriented tube.
Background technology
At present, in field of machining, to the measurement of paralleism of parts and check, be a common measure the item, especially for the multiaxis parts (for example: oriented tube), the depth of parallelism has very important significance, and it has directly embodied processing and the assembly precision of parts.
Take oriented tube as example, and the method for the at present common measurement of paralleism mainly contains two large classes: take aim at target method and two transits method etc.Take aim at the target method mainly contain manually take aim at the target method and on this basis improved laser alignment take aim at the target method, these class methods need be placed target plate at gun muzzle dead ahead position of meters away, by the depth of parallelism between the measurement indirect calculation oriented tube to cross curve on target plate or hot spot, the link of introducing error in measuring process is more, therefore measuring accuracy is lower.The two transits method axis of the circle center line connecting of the axle that is inserted in oriented tube two ends belt sensor as oriented tube, so the coaxiality error of the dimensional accuracy of oriented tube end, form accuracy and axle manufacture and installation stochastic error all can affect the accuracy of measurement result.In addition, for above-mentioned two class methods, measure circulation for one and can only be measured the axis parameter of an oriented tube, and measurement is long non-cutting time, the measuring process level of IT application and automatization level are low, need multi-person synergy to complete, and acceptor's viewing as a result rings very large.
In recent years, along with the significantly lifting of the level of IT application of test, above measuring method obviously lags behind, and measurement of paralleism instrument, the measuring table of routine all are based on above-mentioned two kinds of measuring methods and design at present, thereby, also embodied gradually hysteresis and unworthiness.
Therefore, necessaryly provide a kind of new measurement of paralleism platform to solve the problems referred to above.
Summary of the invention
The technical matters that the utility model solves is to provide a kind of measurement of paralleism platform of oriented tube, and it is inaccurate that it can effectively improve the measuring accuracy existed in prior art, the problem of measuring process inconvenience.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of oriented tube measurement of paralleism platform is characterized in that: the communication system that comprises illuminator, measurement servicing unit, image capturing system, light path system, graphics workstation and connection graphics workstation and described each system;
Described illuminator comprises light source and lighting control module;
Described measurement servicing unit comprises auxiliary calibration device and coordinate transform standard apparatus;
Described image capturing system comprises the camera that described oriented tube is taken and receives the trigger control module that described graphics workstation instruction is taken to control described camera;
Be provided with image input module, image processing module, image analysis module and human-computer interaction module in described graphics workstation, described image input module comprises image acquisition units and image storage unit.
As the further improvement of the technical program, described camera is positioned at vertical two ends of described oriented tube, and described measuring table also is provided with a pedal line that is positioned at described camera field range at described oriented tube two ends.
As the further improvement of the technical program, described measuring table comprises that one is positioned at the worktable of described camera below, and described worktable support is in described oriented tube below, and described pedal line is perpendicular to described worktable.
As the further improvement of the technical program, described human-computer interaction module comprises communication and control unit and system calibrating unit; Described communication system comprises is responsible for mutual data conversion module and the data transmission module of instruction and data.
As the further improvement of the technical program, described light path system comprises light path control module, camera lens and focus controlling module.
Compared with prior art, the utility model oriented tube measurement of paralleism platform utilizes graphics workstation to measure oriented tube, and its measurement result precision is high, and measuring process is very convenient.
[accompanying drawing explanation]
Fig. 1 is oriented tube measurement of paralleism platform architecture schematic diagram described in the utility model.
The schematic diagram that Fig. 2 is the specific embodiment of the utility model while applying in practical application.
Fig. 3 is the photographic images of image capturing system of the present utility model to the oriented tube two ends.
[embodiment]
Refer to shown in Fig. 1, the utility model provides a kind of oriented tube measurement of paralleism platform, and it comprises illuminator, measures servicing unit, image capturing system, light path system, communication system and graphics workstation.
Described illuminator comprises light source and lighting control module.Described light source is used to reference object (multiaxis part) to create all illumination conditions preferably of the homogeneity of intensity and color and luster and consistance, in order to can follow-uply obtain the best image quality contrasted.Correct and suitable utilization or furnish practicable light-source system, except can significantly promoting being detected as power of vision system, also can save simultaneously the system follow-up work software and the hardware cost that must additionally pay.Pattern, size and material feature according to the oriented tube end face, on the basis of preliminary test, select the main light source of highlighted scatter-type arch LED lamp as illuminator in the utility model preferred forms, this light source adopts diffuse reflection arch design and efficient reflective coating to carry out even scattering to light, can concentrate light better and reduce focus than other material in the arch cavity, this light structures can be realized uniform irradiation in a big way, reduce solar flare, shadow and mirror-reflection, thereby make oriented tube end profile feature more outstanding.The effect of described lighting control module is, under different environmental demands, follows the instruction of sending through communication system according to workstation at any time the luminous parameters of light source to be adjusted and controlled, and makes system have adaptability preferably.
Described measurement servicing unit consists of auxiliary calibration device and coordinate transform standard apparatus, is used to image measurement that assisted geometric information is provided, to ensure the accuracy of measuring.The auxiliary calibration device is comprised of some standard-sized target samples, the mapping function in order to each pixel wide on definite image with the upper physical size of corresponding measured object (oriented tube).The coordinate transform standard apparatus is two cover standard vertical graticule reference mechanisms, and during measurement, this mechanism is placed in respectively two transverse planes of oriented tube, includes the vertical graticule in while making every width oriented tube end face image taking.Thereby, by the position of vertical graticule in the both ends of the surface image, their along slope coordinate direction is unified.
Described image capturing system consists of camera and trigger control module.Trigger control module is controlled camera according to the instruction of workstation oriented tube is taken.The pixel number of array image sensor is the emphasis that this part is calculated and selected.For instance, if the face size of measurand is 777mm * 891mm, the length of oriented tube is about 3360mm, straight line degree measurement resolution R=0.25mm, and operating distance D=1000～1500mm, get field of detection FOV=1000mm, calculates thus:
Required pixel number is:
According to above-mentioned requirements, tentatively intend selection face array CMOS image sensor BIS-28000, this sensor pixel resolution is 6080 * 4560, total pixel number 2,770 ten thousand, pixel centre distance ES is 8 μ m, can substantially meet above-mentioned requirements.
Described light path system is by light path control module, camera lens and focus controlling module composition, for photo-sensitive cell measurand is complete, clear, that be projected to without distortion camera.According to the result of image feedback, light path system can be under the control of workstation within the specific limits focal length and the aperture to imaging controlled.Lens focus, field angle and relative aperture are calculated and select is the key of light path system design.According to selected imageing sensor in above-mentioned giving an example, can try to achieve the array length at bond length directional image sensor:
According to the array length of asked for imageing sensor short side direction, can further calculate the required enlargement ratio of whole optical system:
According to magnification M and operating distance D, can obtain the system focal length:
Can further estimate its angle of half field-of view ω according to operating distance and visual field
According to relative aperture, the experimental formula of relation between field angle and focal length three:
By the above results substitution, reference
span, the angle of collateral security image quality considers, and determines in the utility model preferred forms that the imaging system relative aperture is 1/3.
Described communication system has been used for the mutual of instruction between graphics workstation and each subsystem and data, mainly comprises two parts of data conversion module and data transmission module.Select the core parts of FPGA as data conversion module in the utility model preferred forms, flexibly, efficiently realize workstation general connect and each system or intermodule special use connect between the conversion of hardware interface and data layout.Camera is that in the utility model, maximum is also most important data stream to the data stream of workstation, and the data volume of single-frame images is all more than 10M, so data transmission module is intended designing according to the IEEE1394 bus request.
The control core that described graphics workstation is the utility model measuring table, this graphics workstation is controlled other system by communication system, for example: it can carry out automatic calibration to camera site and angle according to the imaging situation of measuring servicing unit, and can carry out the self-adaptation adjusting to the lighting condition of light source according to corresponding parameter, realize that on this basis image gathers automatically; In gatherer process, adopt the duo-trio test to carry out semi-automatic adjusting to parameters such as shooting and lighting, and then tested and the combination of definite optimal parameter.
Be provided with image input module, image processing module, image analysis module and human-computer interaction module in described graphics workstation.Wherein, described image input module comprises the image acquisition units of controlling described camera and the image storage unit of storing the camera photographic images.Image processing module, as core, is responsible for view data is carried out to calculation process, mainly comprises graph style conversion unit, image filtering unit, image cutting unit, edge detection unit and image thinning unit in this image processing module.Described image analysis module is responsible for image is carried out to analytical calculation, and it comprises extraction unit, parameter analytical calculation unit and the depth of parallelism identifying unit of characteristic parameter.Described human-computer interaction module comprises communication and control unit, system calibrating unit.
Embodiment 1:
Refer to shown in Fig. 2, for utilizing the utility model measuring table to measure a kind of specific embodiment of the depth of parallelism, the utility model comprises that one is positioned at the worktable 10 of oriented tube 200 belows, the graphics workstation (comprising image processing module, image analysis module and human-computer interaction module) that is positioned at the image capturing system 20 at oriented tube 200 two ends and is connected with described image capturing system 20.
Described worktable 10 tops also hang a pedal line 30 that hangs with weight, and this pedal line lays respectively at the two ends of described oriented tube and is positioned at the shooting field range of 20 pairs of oriented tube end faces of image capturing system, and pedal line 30 is perpendicular to worktable 10.Please coordinate and consult shown in Fig. 3, described oriented tube is placed horizontally at described worktable 10 tops, and usings an oriented tube as prover pipe 201, usings the die of this prover pipe 201 as true origin, and usings described pedal line 30 as with reference to ordinate.It is the photographic images of image capturing system to the oriented tube two ends, in the end view drawing picture at described oriented tube two ends, includes described pedal line.
In sum, the carrier that measurement of paralleism platform described in the utility model utilizes the image measurement technology of graphics workstation that image is transmitted, principle and digital image processing techniques according to vision are analyzed and researched to the image of oriented tube, obtain needing the information of measuring, be successfully applied at present many modern industries field, also can be applicable to other field, can effectively make up the deficiency of general measuring method, accomplish convenient, precisely, non-cpntact measurement fast.
The above; it is only most preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction; any those of ordinary skill in the art; do not breaking away from technical solutions of the utility model scope situation; utilize the method content of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, all belong to the scope of claims protection.
Claims (5)
1. an oriented tube measurement of paralleism platform, is characterized in that: the communication system that comprises illuminator, measurement servicing unit, image capturing system, light path system, graphics workstation and connection graphics workstation and described each system;
Described illuminator comprises light source and lighting control module;
Described measurement servicing unit comprises auxiliary calibration device and coordinate transform standard apparatus;
Described image capturing system comprises the camera that described oriented tube is taken and receives the trigger control module that described graphics workstation instruction is taken to control described camera;
Be provided with image input module, image processing module, image analysis module and human-computer interaction module in described graphics workstation, described image input module comprises image acquisition units and image storage unit.
2. oriented tube measurement of paralleism platform according to claim 1, it is characterized in that: described camera is positioned at vertical two ends of described oriented tube, and described measuring table also is provided with a pedal line that is positioned at described camera field range at described oriented tube two ends.
3. oriented tube measurement of paralleism platform according to claim 2, it is characterized in that: described measuring table comprises that one is positioned at the horizontal table of described camera below, described worktable support is in described oriented tube below, and described pedal line is perpendicular to described worktable.
4. oriented tube measurement of paralleism platform according to claim 1, it is characterized in that: described human-computer interaction module comprises communication and control unit and system calibrating unit; Described communication system comprises is responsible for mutual data conversion module and the data transmission module of instruction and data.
5. oriented tube measurement of paralleism platform according to claim 4, it is characterized in that: described light path system comprises light path control module, camera lens and focus controlling module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320381107 CN203364775U (en) | 2013-06-30 | 2013-06-30 | Orientation tube parallelism measurement platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320381107 CN203364775U (en) | 2013-06-30 | 2013-06-30 | Orientation tube parallelism measurement platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203364775U true CN203364775U (en) | 2013-12-25 |
Family
ID=49812524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320381107 Expired - Fee Related CN203364775U (en) | 2013-06-30 | 2013-06-30 | Orientation tube parallelism measurement platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203364775U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333840A (en) * | 2015-12-03 | 2016-02-17 | 蒋福根 | Device for detecting straightness of small components |
| CN114563942A (en) * | 2022-01-28 | 2022-05-31 | 福建瑞达精工股份有限公司 | Clock three-pointer parallelism measuring method, device and storage medium |
-
2013
- 2013-06-30 CN CN 201320381107 patent/CN203364775U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333840A (en) * | 2015-12-03 | 2016-02-17 | 蒋福根 | Device for detecting straightness of small components |
| CN114563942A (en) * | 2022-01-28 | 2022-05-31 | 福建瑞达精工股份有限公司 | Clock three-pointer parallelism measuring method, device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108760765B (en) | Side-view camera shooting-based surface damage defect detection device and method | |
| CN101625263B (en) | Brightness measuring device | |
| CN103575239A (en) | Light beam parallel degree testing device and method | |
| US11562478B2 (en) | Method and system for testing field of view | |
| CN102853777B (en) | Based on brake clearance method for measuring width and the equipment of image procossing | |
| CN104101580A (en) | BRDF quick measuring device based on hemisphere array detection | |
| WO2019105433A1 (en) | Image distortion detection method and system | |
| CN107702793A (en) | A kind of test system and method for testing of hot spot light distribution | |
| CN203405174U (en) | A machine vision on-machine measuring system equipped with backlight sources | |
| CN108010071B (en) | System and method for measuring brightness distribution by using 3D depth measurement | |
| CN203364775U (en) | Orientation tube parallelism measurement platform | |
| JP5775646B1 (en) | Point needle type meter image analysis apparatus, indicator needle type meter image analysis method and program | |
| CN103292739A (en) | Actuator-free surface shape accurate measurement device and method | |
| CN105913414A (en) | Calibration device for infrared camera visual system and calibration method | |
| CN104697629A (en) | Lighting environment measurement method based on image analysis | |
| CN105391998B (en) | Automatic detection method and apparatus for resolution of low-light night vision device | |
| CN101566464B (en) | Surgical instrument detector | |
| CN103940334A (en) | Dynamic two-dimensional photoelectric microscope | |
| CN106500577A (en) | A kind of clinac vane grating method for detecting position | |
| CN201757320U (en) | Optical lighting system and non-contact measuring device | |
| CN201421322Y (en) | Visual image acquisition device for detecting surgical instrument | |
| CN204202849U (en) | CCD modulation transfer function measuring device | |
| CN209056145U (en) | A kind of system measuring grating constant | |
| CN207379945U (en) | Optical image detection device | |
| CN110031100A (en) | A kind of various dimensions short-wave infrared light spectrum image-forming detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20140630 |
|
| EXPY | Termination of patent right or utility model |