CN213257670U - Automatic focusing calibration device for special-shaped curved surface laser processing - Google Patents
Automatic focusing calibration device for special-shaped curved surface laser processing Download PDFInfo
- Publication number
- CN213257670U CN213257670U CN202022269103.1U CN202022269103U CN213257670U CN 213257670 U CN213257670 U CN 213257670U CN 202022269103 U CN202022269103 U CN 202022269103U CN 213257670 U CN213257670 U CN 213257670U
- Authority
- CN
- China
- Prior art keywords
- laser
- semi
- mirror
- range finder
- light path
- 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.)
- Active
Links
Images
Landscapes
- Laser Beam Processing (AREA)
Abstract
The utility model relates to an automatic focusing calibration device of dysmorphism curved surface laser beam machining, laser range finder and laser beam machining head unit are arranged in on the six motion, laser beam machining head unit contains focusing mirror, collimating mirror and semi-transparent semi-reflecting mirror, laser beam output links up through the optic fibre interface of optic fibre with laser beam machining head unit, the collimating mirror is arranged on the laser beam output light path, semi-transparent semi-reflecting mirror is arranged on the collimating mirror collimated output light path, focusing mirror is arranged on the semi-transparent semi-reflecting mirror reflection light path, laser range finder's output light path corresponds the transmission light path of semi-transparent semi-reflecting mirror, the focusing mirror is just to the work piece by processing on the processing platform, data acquisition module's input links to each other with laser range finder, the output links to each other with the computer, the computer links to. The laser and the light beam emitted by the laser range finder keep coaxial after passing through the semi-transparent semi-reflecting mirror, and are projected on the surface of the processed workpiece to form a light spot, and the focusing calibration is completed according to the actual contour information.
Description
Technical Field
The utility model relates to an automatic focusing calibration device of dysmorphism curved surface laser beam machining belongs to laser beam machining technical field.
Background
Compared with the traditional processing technology, the laser processing technology has the advantages of material saving, flexibility, high efficiency, suitability for precision processing and the like. In recent years, laser processing techniques typified by laser welding, cutting, surface treatment, and micromachining have been widely used in the fields of aerospace, automobiles, electronics, machine manufacturing, and the like. In the laser processing process, a laser beam is projected to the surface of a processed workpiece through a collimation focusing system of a processing head to form a light spot, and the relative position of the surface of the processed workpiece and a light beam focal plane directly determines the processing quality. For the laser processing of the special-shaped curved surface, relative to the regular surface, the processing head needs to change the motion track according to the profile information of the special-shaped curved surface, and the real-time accurate focusing becomes extremely difficult.
At present, the relatively common laser focusing methods mainly include: burn spot method, pinhole scanning method, CCD phase forming method, etc. However, in most of these methods, the pattern definition is compared by naked eyes or a computer to determine an approximate focus outline, and since human eyes have subjectivity, pattern pixels are easily affected by the environment, so that focusing may have a certain deviation, which cannot meet a high processing precision requirement, and the processing efficiency is not high. Therefore, for the laser processing of the special-shaped curved surface, the improvement of the focusing precision and the realization of real-time accurate focusing in the processing process are very important.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic focusing calibration device of dysmorphism curved surface laser beam machining aims at solving prior art and focuses the problem that the precision is not high, can not realize in the course of working real-time accurate focusing.
The purpose of the utility model is realized through the following technical scheme:
the automatic focusing calibration device for the laser processing of the special-shaped curved surface is characterized in that: laser range finder and laser beam machining head unit are arranged in on six-axis motion, laser beam machining head unit contains the focusing mirror, collimating mirror and semi-permeable half-reflecting mirror, the light beam that the laser instrument sent passes through the optic fibre and links up with the fiber interface of laser beam machining head unit, the collimating mirror is arranged on the output light path of laser instrument, semi-permeable half-reflecting mirror is arranged on the collimation output light path of collimating mirror, the focusing mirror is arranged on the reflection light path of semi-permeable half-reflecting mirror, the output light path of laser range finder corresponds the transmission light path of semi-permeable half-reflecting mirror, the focusing mirror is just to the work piece by processing on the platform, data acquisition module's input links to each other with laser range finder, the output links to each other with the computer, the.
Further, in the above automatic focusing calibration device for the laser processing of the irregular curved surface, the laser is a fiber laser or a semiconductor laser.
Further, the automatic focusing calibration device for the laser processing of the special-shaped curved surface is characterized in that the laser range finder is a phase type laser range finder.
Further, according to the automatic focusing calibration device for the laser processing of the special-shaped curved surface, the laser range finder is located at the upper portion of the laser processing head unit, and light beams emitted by the laser range finder and light beams emitted by the laser are coaxial after passing through the semi-transparent and semi-reflective mirror and are projected to the surface of a processed workpiece to form light spots.
Compared with the prior art, the utility model have apparent advantage and beneficial effect, the concrete aspect that embodies is in following:
the laser and the light beam emitted by the laser range finder keep coaxial after passing through the semi-transparent semi-reflecting mirror and are projected to the surface of the processed workpiece to form a light spot, and the laser range finder collects the Z values of n points passing through the center of the light spot and along the X direction; the light beam emitted by the laser is indicating light, and the size of the light spot projected to the curved surface by the laser range finder is smaller than that of the light spot of the indicating light, so that the sample data capacity can be reduced, and the focusing precision of the central area of the light spot can be ensured;
focusing is carried out on the central area of the light spot according to the actual information of the curved surface profile, and further the spatial three-dimensional coordinate of the machining head is calibrated, so that the machining head finishes a specific machining track according to the calibrated coordinate information in the laser machining process, and the machining precision and efficiency can be obviously improved due to real-time accurate focusing;
the focusing calibration is completed according to the actual contour information of the surface of the machined workpiece, and the method is rapid, efficient and high in accuracy.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1: the utility model discloses the structure schematic diagram of device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the directional terms and the sequence terms and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the automatic focusing calibration device for the laser processing of the special-shaped curved surface, a laser range finder 8 and a laser processing head unit are arranged on a six-axis movement mechanism 6, the laser processing head unit comprises a focusing mirror 3, collimating mirror 5 and semi-permeable half mirror 11, the light beam that laser instrument 9 sent passes through optic fibre and links up with the optical fiber interface 7 of laser processing head unit, collimating mirror 5 is arranged on the output light path of laser instrument 9, semi-permeable half mirror 11 is arranged on the collimation output light path of collimating mirror 5, focusing mirror 3 is arranged on the reflection light path of semi-permeable half mirror 11, laser range finder 8's output light path corresponds the transmission light path of semi-permeable half mirror 11, focusing mirror 3 is just to the work piece 2 of being processed on the processing platform 1, data acquisition module 10's input links to each other with laser range finder 8, the output links to each other with computer 12, computer 12 respectively with six-axis motion 6 and laser instrument 9 control connection.
The laser 9 is a fiber laser or a semiconductor laser. Laser emitted by the laser 9 is transmitted to the collimating mirror 5 of the laser processing head unit through the optical fiber, the optical fiber is matched with the laser processing head unit through the optical fiber interface 7, and the optical fiber position can be adjusted through the optical fiber interface 7. The laser processing head unit can also comprise a light beam shaping structure, a light splitting structure, a water cooling structure and a gas-powder interface structure.
The measured surface profile of the workpiece 2 to be machined can be two-dimensional or three-dimensional, with a measurement error of less than 1 mm. The laser range finder 8 is a phase type laser range finder, the laser range finder 8 is positioned at the upper part of the laser processing head unit, and a light beam emitted by the laser range finder and a light beam emitted by the laser 9 are coaxial after passing through the semi-transparent semi-reflecting mirror 11 and are projected to the surface of the processed workpiece 2 to form a light spot. The data acquisition module 10 collects the coordinate information detected by the laser range finder 8 and transmits the coordinate information to the computer 12. The computer 12 calculates a contour function to solve and record data related to the three-dimensional coordinate calibration of the laser processing head unit space, determines the initial focusing and the processing head deflection angle direction, and sends an instruction to the six-axis movement mechanism 6 to complete the realization of attitude movement or deflection and the laser processing track. In addition, the computer 12 also enables the creation and recording of machining tasks and the setting and adjustment of the switching on and off of the laser 9, the six-axis movement structure 6, the laser distance measuring device 10, etc.
The six-axis motion structure 6 can be a multi-joint robot, a lead screw guide rail and the like, the repeated positioning precision is 0.05mm, and the maximum positioning speed is 5 m/min.
Before the focusing calibration is started, the laser range finder 8 and a space coordinate system of a laser processing track are defined; for a space coordinate system which the laser range finder 8 depends on, the origin of coordinates is positioned at the center of the focusing mirror 3 on the axis of the processing head, and the axis is a Z axis; for the space coordinate system on which the laser processing track depends, the coordinate origin is the laser processing initial point.
To sum up, the utility model discloses focus to the spot central zone according to curved surface profile actual information, and then mark the space three-dimensional coordinate of processing head for specific processing orbit is accomplished according to the coordinate information of maring to the processing head in laser beam machining process, owing to real-time accurate focusing, can show improvement machining precision and efficiency.
The focusing calibration is completed according to the actual contour information of the surface of the machined workpiece, and the method is rapid, efficient and high in accuracy.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (4)
1. The automatic focusing calibration device for the special-shaped curved surface laser processing is characterized in that: the laser range finder (8) and the laser processing head unit are arranged on a six-axis movement mechanism (6), the laser processing head unit comprises a focusing mirror (3), a collimating mirror (5) and a semi-permeable and semi-reflective mirror (11), output beams of the laser (9) are connected with an optical fiber interface (7) of the laser processing head unit through optical fibers, the collimating mirror (5) is arranged on an output light path of the laser (9), the semi-permeable and semi-reflective mirror (11) is arranged on a collimation output light path of the collimating mirror (5), the focusing mirror (3) is arranged on a reflected light path of the semi-permeable and semi-reflective mirror (11), an output light path of the laser range finder (8) corresponds to a transmission light path of the semi-permeable and semi-reflective mirror (11), the focusing mirror (3) is right opposite to a processed workpiece (2) on a processing platform (1), the input end of a data acquisition module (10) is connected with the, the computer (12) is respectively connected with the six-axis movement mechanism (6) and the laser (9) in a control way.
2. The automatic focusing calibration device for the laser processing of the special-shaped curved surface according to claim 1, characterized in that: the laser (9) is a fiber laser or a semiconductor laser.
3. The automatic focusing calibration device for the laser processing of the special-shaped curved surface according to claim 1, characterized in that: the laser range finder (8) is a phase type laser range finder.
4. The automatic focusing calibration device for the laser processing of the special-shaped curved surface according to claim 1 or 3, characterized in that: the laser range finder (8) is positioned at the upper part of the laser processing head unit, and the light beam emitted by the laser range finder and the light beam emitted by the laser (9) are coaxial after passing through the semi-transparent half-reflecting mirror (11) and are projected to the surface of the processed workpiece (2) to form a light spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022269103.1U CN213257670U (en) | 2020-10-13 | 2020-10-13 | Automatic focusing calibration device for special-shaped curved surface laser processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022269103.1U CN213257670U (en) | 2020-10-13 | 2020-10-13 | Automatic focusing calibration device for special-shaped curved surface laser processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213257670U true CN213257670U (en) | 2021-05-25 |
Family
ID=75948915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022269103.1U Active CN213257670U (en) | 2020-10-13 | 2020-10-13 | Automatic focusing calibration device for special-shaped curved surface laser processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213257670U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113814555A (en) * | 2021-10-25 | 2021-12-21 | 中南大学 | High-precision curved surface laser processing system based on 3D and laser distance sensor |
| CN113857654A (en) * | 2021-12-06 | 2021-12-31 | 苏州菲镭泰克激光技术有限公司 | Multi-axis linkage processing equipment and method for real-time acquisition and three-dimensional scanning and verification |
-
2020
- 2020-10-13 CN CN202022269103.1U patent/CN213257670U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113814555A (en) * | 2021-10-25 | 2021-12-21 | 中南大学 | High-precision curved surface laser processing system based on 3D and laser distance sensor |
| CN113857654A (en) * | 2021-12-06 | 2021-12-31 | 苏州菲镭泰克激光技术有限公司 | Multi-axis linkage processing equipment and method for real-time acquisition and three-dimensional scanning and verification |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4908951A (en) | Coordinate measuring and testing machine | |
| CN213257670U (en) | Automatic focusing calibration device for special-shaped curved surface laser processing | |
| CN112091414A (en) | Automatic focusing calibration device and method for special-shaped curved surface laser processing | |
| US5410410A (en) | Non-contact type measuring device for measuring three-dimensional shape using optical probe | |
| US5757496A (en) | Method of surface roughness measurement using a fiber-optic probe | |
| Giusti et al. | On-line sensing of flank and crater wear of cutting tools | |
| Shirinzadeh | Laser‐interferometry‐based tracking for dynamic measurements | |
| US10712147B2 (en) | Measurement system and method of manufacturing shaft with hole | |
| CN109318059A (en) | The calibrating installation and method of numerically-controlled machine tool translation shaft geometric error | |
| CN209842399U (en) | Calibrating device for geometric error of machine tool and corner positioning error of rotary table | |
| CN107234487A (en) | Moving component multi-parameter detecting method based on combinatorial surface type standard | |
| CN106975983A (en) | A kind of method of testing for the hot position error of vertical machining centre linear axes | |
| CN115335181A (en) | Method and processing machine for determining the orientation of a workpiece by means of OCT | |
| CN210451368U (en) | Laser scanning system and laser engraving system with same | |
| JPS58208604A (en) | Positioning device at high accuracy | |
| CN112264722A (en) | Laser micropore machining equipment and machining method suitable for thin-wall parts | |
| CN201371316Y (en) | Multi-functional laser machining system | |
| WO1998013739A1 (en) | Six degree of freedom sensor | |
| Charrett et al. | Workpiece positioning sensor (wPOS): A three-degree-of-freedom relative end-effector positioning sensor for robotic manufacturing | |
| CN207163406U (en) | A kind of two-dimension displacement measuring system based on primary standard of curved surface part | |
| KR950014515B1 (en) | Device for controlling non-contact digitizing | |
| US4877325A (en) | Machine component accuracy measuring system | |
| CN115741721A (en) | Robot welding track correction method based on optical low coherence technology | |
| RU2283738C1 (en) | Device for laser working | |
| JPS61103688A (en) | Working method using laser and optical fiber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |