CN201223996Y - Non-coaxial locating device for processing laser material - Google Patents
Non-coaxial locating device for processing laser material Download PDFInfo
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- CN201223996Y CN201223996Y CN 200820108746 CN200820108746U CN201223996Y CN 201223996 Y CN201223996 Y CN 201223996Y CN 200820108746 CN200820108746 CN 200820108746 CN 200820108746 U CN200820108746 U CN 200820108746U CN 201223996 Y CN201223996 Y CN 201223996Y
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Abstract
The utility model discloses a non-coaxial workpiece processing point positioning device used for laser material processing, belonging to the field of material processing. The utility model comprises a CCD camera, an image acquisition card, a control circuit, a fixing device and a computer. The CCD camera and the control circuit are fixed on a laser processing head through the fixing device. Through the preprocessing at the waste material, the laser processing head is moved to enable the CCD camera to make imaging positioning to the preprocessing image so as to determine the relative locations of the CCD camera and the laser processing head; then the CCD camera replaces the laser processing head to make idling preprocessing to the workpiece part which needs to be processed; the processing path is observed and judged to see whether the path meets the requirements; if the processing part does not meet the requirements, the processing path is adjusted and the workpiece part is processed and compensated until the path meets the requirements; finally, the laser processing head is moved to the location of the CCD camera to carry out the final laser processing. The utility model does not need to change the structure of the existing laser processing head and is easy in assembly; besides, the whole positioning process is rapid and highly accurate.
Description
Technical field
The utility model relates to pinpoint device in a kind of Materialbearbeitung mit Laserlicht, belongs to material processing field.
Background technology
To the accurate location of processing stand, be the basic demand of finishing Laser Processing, need cut in strict accordance with institute plated electrode edge during as the silver-plated electrode of laser cutting aluminium oxide, and in laser weld, need centrally aligned weld seam center laser beam.Existing Laser Processing localization method and device be main to use coaxial He-Ne laser to carry out the processing stand location and the sky that carries out machining path is walked, positioning accuracy is poor, can't finish high-quality Laser Processing and Precision Machining, main cause has: (1) is not easy clearly to observe simultaneously laser positioning point and fine pattern on every side thereof on the material because location He-Ne laser brightness is high and the restriction of resolution of eye by human eye; (2) because locating laser has certain spot size, and inconsistent with reality processing laser facula, thus be difficult to determine whether the center of locating laser overlaps with set machining path center, and the compensation in the laser cutting process; (3) in the practical application, coaxial positioning laser can be because a variety of causes and actual processing laser generation optical axis deviation phenomenon, trimming process complexity again.Therefore, the localization method of at present existing coaxial He-Ne laser and device can't satisfy accurate positioning requirements to a certain absolute position of the rapidoprint Laser Processing of the nonmetal circuit substrate of microcircuit (as be printed on), and design and invention are used for laser beam pinpoint method of processing stand and device are had very important practical value and demand meaning.Mentioned the coaxial positioning system among the utility model patent CN2535180, this system finishes accurate location by the coaxial CCD imaging system of adding and laser beam, but this method need be changed the structure of existing laser Machining head, whole navigation system complexity, to the repacking difficulty of existing laser Machining head, be unfavorable for promoting.Adopt two CCD imaging navigation systems before welding, workpiece to be calibrated the location when having proposed laser weld among the patent of invention CN1640607, whether this method can't observe laser in the machining path process process according to the path of hope, be not suitable for Laser Processing (as the cutting complex pattern) process of complex pattern, and this method is only just suitable to having with the material of standard component identical appearance, and is high to the profile early-stage preparations requirement of material.In addition, the investment of above-mentioned two kinds of devices is big, is unfavorable for product promotion.
Therefore, it is very necessary needing to seek a kind of structure, the accurate positioning method that can intuitively locate and adjust machining path and device simple to operate, applied widely, that needn't change existing laser Machining head, in order to satisfy laser comprises all kinds of precision machinings such as cutting, welding and irradiation location to material technological requirement.
The utility model content
The purpose of this utility model provides a kind of device that is used for the non-coaxial accurate location processing stand of Materialbearbeitung mit Laserlicht, utilize the characteristics of existing laser process machine high position precision and repetitive positioning accuracy, be implemented under the common control of computer and laser process machine workpiece is accurately located.This method and device need not to change the structure of existing laser Machining head, assemble simple and easyly, and whole position fixing process is quick, and the precision height has improved labor productivity and yield rate, has alleviated labour intensity.
In order to achieve the above object, the utility model has been taked following technical scheme.Control circuit, the lighting source of instruction format that include ccd video camera, image pick-up card, the control instruction of computer can be converted to the control ccd video camera and be connected with ccd video camera, control circuit and is equipped with the computer of software processing module.First keyset that described fixture includes adjustable tilted block, second keyset, the 3rd keyset and is used for fixedlying connected with laser Machining head.Wherein: an end of adjustable tilted block is fixedlyed connected with first keyset, and the other end is fixedlyed connected with second keyset.Ccd video camera is fixedlyed connected with second keyset; The 3rd keyset is fixedly connected on the downside of second keyset, and lighting source is fixedly connected on the 3rd keyset.Control circuit is fixedly connected on first keyset.Can make being fixed on the laser Machining head of ccd video camera, LED lighting source and control circuit rigidity by this fixture, together be X, Y, the rotation of the translation of Z axle and C axle with laser Machining head.One end of control circuit links to each other with the control interface of ccd video camera, and the other end links to each other with computer; Computer also links to each other with the image output interface of ccd video camera by image pick-up card.
Use above-mentioned non-coaxial positioning apparatus, the location of finishing the workpiece processing stand by the method for secondary location, basic process is: by in the preprocessing of material waste place, mobile laser Machining head makes ccd video camera carry out the imaging location to the preprocessing pattern, determine the relative position of ccd video camera and laser Machining head and the processing live width of Laser Processing, replace laser Machining head that sky is carried out at the workpiece position of needs processing with ccd video camera afterwards and walk preprocessing, whether observe machining path meets processing request and adjusts machining path, the processing compensation and the location of workpiece are until meeting processing request, at last the relative position according to the laser Machining head of ccd video camera moves the position of laser Machining head to ccd video camera, carries out final Laser Processing.
Its detailed process is as follows:
1) carries out laser preprocessing " cross " pattern at the waste material place of material to be processed with laser Machining head, and read the position coordinates a of laser Machining head when " cross " pattern center position by laser process machine control system display interface;
2) mobile laser Machining head, ccd video camera is aimed at " cross " pattern of preprocessing, computer is gathered picture signal by image pick-up card and is imported computer into, " cross " pattern of the preprocessing that obtains amplifying by the enlargement ratio and the focusing of control circuit control ccd video camera; Further adjust the position of laser Machining head, make the center grid on " cross " centrally aligned computer screen of preprocessing pattern; Afterwards along the mobile laser Machining head of z axle, whether remain on the grid of center at the center of observing " cross " pattern on the computer screen, if depart from, adjust adjustable tilted block, each highly all aims at " cross " pattern along the z axle to utilize " 1/2 method " to make grid element center, finishes the calibration parallel with the laser Machining head optical axis of imaging optical axis; The circle mark processing live width that diameter of mark equates with the preprocessing live width on the image display center, read the position coordinates b of laser Machining head this moment at last by laser process machine control system display interface, position coordinates a and position coordinates b are input to respectively in the computer, calculate the relative position coordinates c of ccd video camera and laser Machining head;
3) the processing starting point of the location of workpiece that the ccd video camera aligning need be processed, the processing of processing by the live width setting laser of mark compensates; Ccd video camera, control circuit and the lighting source sky controlled then on laser Machining head traction fixing device and the fixture are walked machining path, and have a real time image collection of processing line width marker, observe whether machining path meets processing request in the whole process, as do not meet, adjust machining path, processing compensation and the location of workpiece till meeting processing request;
4) by relative position coordinates c laser Machining head is moved to the position at ccd video camera place, carry out final Laser Processing.
Compare with existing utility model, the beneficial effect of the utility model tool is:
1, processed workpiece be can quick and precisely locate, production efficiency and crudy improved;
2, need not to change the structure of existing laser Machining head, only use a ccd video camera, install simply, cost is low, and the optional accessory that can be used as laser machine is promoted;
3, can accurately locate any imageable material, material there is not the requirement of profile, satisfy the machining path of any pattern, the detection of processing live width, be applicable to multiple processing request (cutting, welding and irradiation), can give full play to the multifarious characteristics of Laser Processing.
Description of drawings
The schematic diagram of Fig. 1 after for non-coaxial positioning apparatus assembling ccd video camera
Fig. 2 is the operation principle schematic diagram of non-coaxial positioning apparatus
Fig. 3 aims at preprocessing " cross " pattern schematic diagram for non-coaxial positioning apparatus
Fig. 4 detects the process schematic diagram for non-coaxial positioning apparatus
Among the figure: 1, first keyset, 2, adjustable tilted block, 3, second keyset, 4, ccd video camera, 5, thimble screw, the 6, the 3rd keyset, 7, control interface, 8, the image output interface, 9, laser Machining head, 10, control circuit.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Consult Fig. 1, the fixture of the utility model non-coaxial positioning apparatus is divided into 4 parts, among Fig. 1 in the fixture first keyset 1 fixedly connected with laser Machining head 9; Adjustable tilted block 2 one ends are fixedlyed connected with first keyset 1, and the other end is fixedlyed connected with second keyset 3; Ccd video camera 4 is fixedlyed connected with second keyset 3; The 3rd keyset 6 is fixedly connected on the second keyset downside, and the annular LED lighting source is fixed on the 3rd keyset 6 by its fixed screw; Control circuit 10 is fixedly connected on first keyset 1 that is positioned at above the adjustable tilted block 2.Can make being fixed on the laser Machining head of ccd video camera 4, LED lighting source and control circuit 10 rigidity by this fixture, together be X, Y, the rotation of the translation of Z axle and C axle with laser Machining head.By regulating two thimble screws 5 on the adjustable tilted block 2, the imaging optical axis of ccd video camera 4 can be rotated along A axle and B axle, parallel to adjust ccd video camera 4 imaging optical axises with laser Machining head 9 optical axises.The introducing of annular LED lighting source has guaranteed that ccd video camera can obtain the image of high-contrast.
Software processing module in the computer comprises image capture module, image processing and display module, control ccd video camera module and computing module.Image capture module operates in the program backstage, finishes reading images signal from image pick-up card; Image is handled and display module is finished CCD and gathered the demonstration of image on computer screen, carries out brightness and contrast's adjustment to gathering the image that shows, and on the image that shows on the computer screen equidistant grid of mark and circular processing live width, machining path provides standard when aiming at preprocessing " cross " pattern and monitoring laser processing head sky and walk for ccd video camera; Control ccd video camera module is to utilize by the action button on the software to send the RS232 data, by the conversion of control circuit to control signal, finishes the control to ccd video camera focusing, focusing function; Computing module can calculate the relative position coordinates c of laser Machining head with respect to ccd video camera according to two position coordinates a that import when the preprocessing and b, moves laser Machining head by the data that calculate and can make laser Machining head move to the position of ccd video camera before the mobile laser Machining head accurately.
The operation principle of package unit as shown in Figure 2.
After the assembling of finishing non-coaxial positioning apparatus, the location of finishing the workpiece processing stand by the method for secondary location, basic process is by in the preprocessing of material waste place, mobile laser Machining head makes ccd video camera carry out the imaging location to the preprocessing pattern, determine the relative position of ccd video camera and laser Machining head and the processing live width of Laser Processing, replace laser Machining head that sky is carried out at the workpiece position of needs processing with ccd video camera afterwards and walk preprocessing, whether observe machining path meets processing request and adjusts machining path, the processing compensation and the location of workpiece are until meeting processing request, at last the relative position according to the laser Machining head of ccd video camera moves the position of laser Machining head to the ccd video camera place, carries out final Laser Processing.Detailed process is as follows:
1) carries out laser preprocessing " cross " pattern at the waste material place that wants rapidoprint with laser Machining head, and read the position coordinates a of laser Machining head when " cross " pattern center position by laser process machine control system display interface;
2) mobile laser Machining head, (ccd video camera in the positioner that only draws) aims at ccd video camera in " cross " pattern 11 of preprocessing as shown in Figure 3, directly control the enlargement ratio and the focusing of ccd video camera by control circuit by computer software, gather picture signal by image pick-up card and import computer into, on computer screen, obtain " cross " pattern 12 of the preprocessing of amplifying.Further adjust X, Y and the C coordinate of laser Machining head, make the center grid 13 in " cross " centrally aligned computer screen epigraph display module of preprocessing pattern, and the grid on the screen is overlapped with " cross " pattern.Afterwards along the mobile laser Machining head of z axle, whether remain on the grid of center at the center of observing " cross " pattern on the computer screen, if depart from, adjust the thimble screw 5 of adjustable tilted block, each highly all aims at " cross " pattern along the z axle to utilize " 1/2 method " to make grid element center, finishes the calibration parallel with the laser Machining head optical axis of imaging optical axis.Utilize the software image processing module circle mark that diameter of mark equates with the preprocessing live width on image display center processing live width 14.Read the position coordinates b of laser Machining head this moment at last by laser process machine control system display interface, coordinate position a and coordinate position b are input to respectively in the computing module of software, calculate the relative position coordinates c of ccd video camera and laser Machining head by software;
3) the processing starting point of the location of workpiece that the ccd video camera aligning need be processed, the processing of processing by the live width setting laser of mark compensates.Control the ccd video camera on laser Machining head traction fixing device and the fixture then, control circuit and annular LED lighting source sky are walked machining path, and have a real time image collection of processing line width marker, as Fig. 4, whether observe in the whole process machining path meets processing request 15 (promptly whether cutting path is advanced according to the pattern on the workpiece, whether the processing live width is within tolerance), as do not meet, adjust machining path (adjusting the laser Machining head movement locus) by software processing module, the processing compensation and the location of workpiece are till meeting processing request;
4) relative position coordinates c is input in the laser process machine control system, moves the position of laser Machining head, carry out final Laser Processing to ccd video camera by this displacement.
Claims (1)
1, a kind of non-coaxial positioning apparatus that is used for Materialbearbeitung mit Laserlicht is characterized in that: control circuit (10), the lighting source of instruction format that include ccd video camera (4), image pick-up card, the control instruction of computer can be converted to control ccd video camera (4) and be connected with ccd video camera, control circuit and is equipped with the computer of software processing module; First keyset (1) that described fixture includes adjustable tilted block (2), second keyset (3), the 3rd keyset (6) and is used for fixedlying connected with laser Machining head (9); Wherein: an end of adjustable tilted block (2) is fixedlyed connected with first keyset (1), and the other end is fixedlyed connected with second keyset (3); Ccd video camera (4) is fixedlyed connected with second keyset (3); The 3rd keyset (6) is fixedly connected on the downside of second keyset (3), and lighting source is fixedly connected on the 3rd keyset (6); Control circuit (10) is fixedly connected on first keyset (1); One end of control circuit (10) links to each other with the control interface (7) of ccd video camera (4), and the other end links to each other with computer; Computer also links to each other with the image output interface (8) of ccd video camera (4) by image pick-up card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820108746 CN201223996Y (en) | 2008-06-20 | 2008-06-20 | Non-coaxial locating device for processing laser material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820108746 CN201223996Y (en) | 2008-06-20 | 2008-06-20 | Non-coaxial locating device for processing laser material |
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| CN201223996Y true CN201223996Y (en) | 2009-04-22 |
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| CN 200820108746 Expired - Fee Related CN201223996Y (en) | 2008-06-20 | 2008-06-20 | Non-coaxial locating device for processing laser material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298116B (en) * | 2008-06-20 | 2011-05-18 | 北京工业大学 | Non-coaxial positioning method for processing laser material |
| CN105414747A (en) * | 2015-12-01 | 2016-03-23 | 武汉凌云光电科技有限责任公司 | Efficient machine vision auxiliary laser machining method |
| CN106141454A (en) * | 2016-08-31 | 2016-11-23 | 武汉天琪激光设备制造有限公司 | A kind of cutting head with detent mechanism, cutter sweep and cutting method |
| CN106271055A (en) * | 2016-08-29 | 2017-01-04 | 武汉天琪激光设备制造有限公司 | Infrared type Scan orientation apparatus for correcting and antidote |
| CN106454048A (en) * | 2016-07-29 | 2017-02-22 | 大族激光科技产业集团股份有限公司 | Pseudo coaxial CCD shooting system and laser processing device employing the system |
-
2008
- 2008-06-20 CN CN 200820108746 patent/CN201223996Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298116B (en) * | 2008-06-20 | 2011-05-18 | 北京工业大学 | Non-coaxial positioning method for processing laser material |
| CN105414747A (en) * | 2015-12-01 | 2016-03-23 | 武汉凌云光电科技有限责任公司 | Efficient machine vision auxiliary laser machining method |
| CN105414747B (en) * | 2015-12-01 | 2017-06-23 | 武汉凌云光电科技有限责任公司 | A kind of efficient machine vision auxiliary laser processing method |
| CN106454048A (en) * | 2016-07-29 | 2017-02-22 | 大族激光科技产业集团股份有限公司 | Pseudo coaxial CCD shooting system and laser processing device employing the system |
| CN106454048B (en) * | 2016-07-29 | 2019-12-24 | 大族激光科技产业集团股份有限公司 | Pseudo-coaxial CCD shooting system and laser processing device adopting same |
| CN106271055A (en) * | 2016-08-29 | 2017-01-04 | 武汉天琪激光设备制造有限公司 | Infrared type Scan orientation apparatus for correcting and antidote |
| CN106141454A (en) * | 2016-08-31 | 2016-11-23 | 武汉天琪激光设备制造有限公司 | A kind of cutting head with detent mechanism, cutter sweep and cutting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20130620 |