CN213764446U - Laser light path accurate alignment system for laser precision machining equipment - Google Patents
Laser light path accurate alignment system for laser precision machining equipment Download PDFInfo
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- CN213764446U CN213764446U CN202022644531.8U CN202022644531U CN213764446U CN 213764446 U CN213764446 U CN 213764446U CN 202022644531 U CN202022644531 U CN 202022644531U CN 213764446 U CN213764446 U CN 213764446U
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Abstract
The utility model discloses a laser light path accurate collimation system for laser precision machining equipment, which comprises a laser light path to be collimated, an image acquisition unit and an image analysis unit; the laser optical path to be collimated comprises a laser emitting unit, a laser beam expanding unit arranged along the optical path propagation direction of the laser emitting unit, a first reflecting mirror arranged along the optical path propagation direction of the laser beam expanding unit, a second reflecting mirror arranged along the reflecting optical path of the first reflecting mirror and a processing head arranged along the reflecting optical path of the second reflecting mirror; the image acquisition unit is used for acquiring image information of laser spots at different positions; the image analysis unit is in communication connection with the image acquisition unit and is used for acquiring the light path offset and the divergence angle set value. The utility model provides a traditional adjustment method of visualing can't the accurate facula position deviation value on the quantization light path, realize the accurate collimation to the laser light path, effectively promoted laser machining's machining precision and processing effect.
Description
Technical Field
The utility model relates to a laser light path collimation technical field especially relates to a laser light path accurate alignment system for laser precision finishing equipment.
Background
At present, aiming at the problem that a laser light path collimation system built by using a reflector adopts auxiliary tools such as a cross, a via hole and the like to perform light path collimation through a visual adjustment method, the collimation mode is very complicated and difficult for the light path collimation of a long light path or a dynamic light path with a constantly changing light path (namely, the light path of an X axis or an X axis + a Y axis or an X/Y axis + a Z axis constantly changes in the processing process), the deviation value of the light spot projection position and the change value of the light spot diameter of the dynamic light path in the light path changing process can not be accurately quantized, and accurate collimation can not be realized, so that the processing stability and the processing precision of laser secret processing equipment are influenced.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide a laser light path accurate collimation system for laser precision finishing equipment.
The technical scheme of the utility model as follows:
a laser light path accurate alignment system for laser precision machining equipment comprises a laser light path to be aligned, an image acquisition unit and an image analysis unit;
the laser optical path to be collimated comprises a laser emitting unit, a laser beam expanding unit arranged along the optical path propagation direction of the laser emitting unit, a first reflecting mirror fixedly arranged along the optical path propagation direction of the laser beam expanding unit, a second reflecting mirror movably arranged along the reflection optical path of the first reflecting mirror, and a processing head movably arranged along the reflection optical path of the second reflecting mirror; the light emitting direction of the first reflector is used as an X axis, the light emitting direction of the second reflector is used as a Y axis, the light emitting direction of the machining head is used as a Z axis, the second reflector and the machining head can reciprocate along the Y axis direction relative to the first reflector, the machining head can reciprocate along the X axis direction relative to the second reflector, and the machining head can also reciprocate along the Z axis direction;
the image acquisition unit is arranged at any position of the second reflecting mirror, the processing head or the Z-axis direction and is used for acquiring the image information of the laser spot at the corresponding position;
the image analysis unit is in communication connection with the image acquisition unit and is used for analyzing and processing the image information acquired by the image acquisition unit to obtain the center point coordinate and the diameter of the light spot and obtaining the set value of the light path offset and the divergence angle according to the center point coordinate and the diameter.
Preferably, the image acquisition unit is an industrial camera module;
the industrial camera module consists of an adapter plate, an industrial camera and an optical attenuation device; the industrial camera is arranged on the adapter plate and is in communication connection with the image analysis unit, and the industrial camera is fixed at a preset position through the adapter plate during application; the optical attenuation device is disposed on a lens of the industrial camera.
Preferably, the image analysis unit is a computer with image processing and data computing capabilities, and the computer is in communication connection with the industrial camera.
Preferably, the laser emitting unit is a laser.
Preferably, the laser beam expanding unit is a beam expanding lens.
Preferably, the first mirror and the second mirror are both 45 degree mirrors.
Preferably, the optical attenuation device is an attenuation sheet.
Preferably, the computer is in communication connection with the industrial camera through a data line.
By adopting the scheme, the utility model discloses following beneficial effect has:
the utility model provides a traditional visual adjustment method can't accurate spot position deviation value and the problem of light beam divergence angle on the quantization light path, realize the accurate collimation to the laser light path, effectively promoted laser machining's machining precision and processing effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the laser light path precise alignment system of the present invention;
fig. 2 is a schematic structural diagram of the laser light path precise alignment system of the present invention aligning the first reflector;
fig. 3 is a schematic structural diagram of the laser path precise alignment system of the present invention aligning the second reflecting mirror;
fig. 4 is the utility model discloses the accurate collimating system of laser light path carries out the structure sketch map of collimation to the processing head.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", "front", "rear", and the like are used in the orientation or positional relationship shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Referring to fig. 1 to 4, the present invention provides a laser light path precise alignment system for a laser precision machining device, which includes a dynamic laser light path to be aligned, an image acquisition unit 1 and an image analysis unit 2;
the dynamic laser optical path to be collimated comprises a laser emitting unit 3 for emitting laser, a laser beam expanding unit 4 arranged along the optical path propagation direction of the laser emitting unit 3, a first reflecting mirror 5 fixedly arranged along the optical path propagation direction of the laser beam expanding unit 4, a second reflecting mirror 6 movably arranged along the reflection optical path of the first reflecting mirror 5, and a processing head 7 movably arranged along the reflection optical path of the second reflecting mirror 6; taking the light emitting direction of the first reflector 5 as an X axis, the light emitting direction of the second reflector 6 as a Y axis, and the light emitting direction of the processing head 7 as a Z axis, the second reflector 6 and the processing head 7 can reciprocate along the Y axis direction relative to the first reflector 5, the processing head 7 can reciprocate along the X axis direction relative to the second reflector 6, and the processing head 7 can also reciprocate along the Z axis direction; the image acquisition unit 1 is arranged at any one position in the direction of the second reflecting mirror 6, the processing head 7 or the Z axis and is used for acquiring the image information of the laser spot at the corresponding position; the image analysis unit 2 is in communication connection with the image acquisition unit 1, and is used for analyzing and processing image information acquired by the image acquisition unit 1 to obtain a central point coordinate and a diameter of a light spot, and obtaining a light path offset and a divergence angle set value according to the central point coordinate and the diameter; when the device is applied, the image acquisition unit 1 acquires image information of light spots at different positions, the image analysis unit 2 analyzes the image information to acquire the center point coordinates and the diameters of the corresponding light spots, the image analysis unit 2 calculates the coordinate deviation value of the center point coordinates of the light spots at adjacent positions, the offset of the light path is accurately quantized based on the coordinate deviation value, and the divergence angle set value of the laser beam expanding unit 4 can be accurately quantized by comparing the diameters of the light spots at different positions, so that the parameters of the laser beam expanding unit 4 can be accurately adjusted, and the accurate collimation of the laser light path is realized;
the laser emitting unit 3 adopts a laser, the laser beam expanding unit 4 adopts a beam expanding lens, and the first reflecting mirror 5 and the second reflecting mirror 6 both adopt 45-degree reflecting mirrors.
In this embodiment, the image capturing unit 1 is an industrial camera module, and specifically, the industrial camera module is composed of an adapter plate 11, an industrial camera 12 and an optical attenuation device 13; the industrial camera 12 is arranged on the adapter plate 11, the industrial camera 12 is in communication connection with the image analysis unit 2, and the industrial camera 12 is fixed at a preset position through the adapter plate 11 during application; the optical attenuation device 13 is disposed on the lens of the industrial camera 12, and specifically, the optical attenuation device 13 employs an attenuation sheet, and the attenuation sheet with a corresponding waveband can be selected according to the waveband of laser emitted by the laser and mounted on the lens of the industrial camera 12.
In this embodiment, the image analysis unit 2 is a computer with image processing and data calculation capabilities, the computer is in communication connection with the industrial camera 12, and specifically, the computer is in communication connection with the industrial camera 12 through a data line 8.
The utility model discloses working process and principle as follows: taking the collimation of the first reflector 5 as an example, firstly, the industrial camera 12 is fixed on the second reflector 6 by using the adapter plate 11, and the incident port of the industrial camera 12 faces the light-emitting direction of the first reflector 5, and the industrial camera 12 is also perpendicular to the Y-axis direction; then, collecting image information of a first light spot projected on the light attenuation sheet at a position close to the first reflector 5 by an industrial camera 12, and calculating a coordinate value and a diameter of a central point of the first light spot by a computer; then, the image information of the second light spot projected on the light attenuation sheet is collected at the farthest position relative to the first reflector 5 through the industrial camera 12, the coordinate value and the diameter of the central point of the second light spot are calculated through the computer, the coordinate deviation value of the central point coordinates of the light spots at two positions is automatically calculated through the computer, the placing angle of the first reflector 5 can be adjusted according to the detected coordinate deviation value, and the process is repeated until the position deviation is smaller than 10 micrometers; the collimation of the second reflecting mirror 6 and the processing head 7 can be performed according to the method, the divergence angle adjustment of the beam expanding mirror is obtained by comparing the detected spot diameter close to the first reflecting mirror 5 with the spot diameter of the processing head 7 which runs to the farthest position of the X axis and the Y axis, and the setting of the divergence angle is adjusted until the difference value between the two is less than 50 micrometers, so that the divergence angle setting value of the beam expanding mirror can be accurately quantized, and the collimation work of the whole dynamic laser light path is completed.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a traditional visual adjustment method can't accurate spot position deviation value and the problem of light beam divergence angle on the quantization light path, realize the accurate collimation to the laser light path, effectively promoted laser machining's machining precision and processing effect.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A laser light path accurate alignment system for laser precision machining equipment is characterized by comprising a laser light path to be aligned, an image acquisition unit and an image analysis unit;
the laser optical path to be collimated comprises a laser emitting unit, a laser beam expanding unit arranged along the optical path propagation direction of the laser emitting unit, a first reflecting mirror fixedly arranged along the optical path propagation direction of the laser beam expanding unit, a second reflecting mirror movably arranged along the reflection optical path of the first reflecting mirror, and a processing head movably arranged along the reflection optical path of the second reflecting mirror; the light emitting direction of the first reflector is used as an X axis, the light emitting direction of the second reflector is used as a Y axis, the light emitting direction of the machining head is used as a Z axis, the second reflector and the machining head can reciprocate along the Y axis direction relative to the first reflector, the machining head can reciprocate along the X axis direction relative to the second reflector, and the machining head can also reciprocate along the Z axis direction;
the image acquisition unit is arranged at any position of the second reflecting mirror, the processing head or the Z-axis direction and is used for acquiring the image information of the laser spot at the corresponding position;
the image analysis unit is in communication connection with the image acquisition unit and is used for analyzing and processing the image information acquired by the image acquisition unit to obtain the center point coordinate and the diameter of the light spot and obtaining the set value of the light path offset and the divergence angle according to the center point coordinate and the diameter.
2. The laser light path precise alignment system for laser precision machining equipment according to claim 1, wherein the image acquisition unit is an industrial camera module;
the industrial camera module consists of an adapter plate, an industrial camera and an optical attenuation device; the industrial camera is arranged on the adapter plate and is in communication connection with the image analysis unit, and the industrial camera is fixed at a preset position through the adapter plate during application; the optical attenuation device is disposed on a lens of the industrial camera.
3. The system of claim 2, wherein the image analysis unit is a computer with image processing and data operation capability, and the computer is connected to the industrial camera in communication.
4. The laser optical path precise alignment system for laser precision machining equipment according to claim 1, wherein the laser emitting unit is a laser.
5. The laser optical path precise alignment system for laser precision machining equipment according to claim 1, wherein the laser beam expanding unit is a beam expanding lens.
6. The system for precisely aligning the path of laser light of a laser precision machining apparatus according to claim 1, wherein the first reflecting mirror and the second reflecting mirror are each a 45-degree reflecting mirror.
7. The laser optical path precise alignment system for laser precision machining equipment according to claim 2, wherein the optical attenuation device is an attenuation sheet.
8. The system of claim 3, wherein the computer is communicatively connected to the industrial camera via a data line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022644531.8U CN213764446U (en) | 2020-11-16 | 2020-11-16 | Laser light path accurate alignment system for laser precision machining equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022644531.8U CN213764446U (en) | 2020-11-16 | 2020-11-16 | Laser light path accurate alignment system for laser precision machining equipment |
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| CN213764446U true CN213764446U (en) | 2021-07-23 |
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| CN202022644531.8U Active CN213764446U (en) | 2020-11-16 | 2020-11-16 | Laser light path accurate alignment system for laser precision machining equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178723A (en) * | 2021-12-09 | 2022-03-15 | 中国科学院西安光学精密机械研究所 | Folded light path laser cutting head debugging method |
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2020
- 2020-11-16 CN CN202022644531.8U patent/CN213764446U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178723A (en) * | 2021-12-09 | 2022-03-15 | 中国科学院西安光学精密机械研究所 | Folded light path laser cutting head debugging method |
| CN114178723B (en) * | 2021-12-09 | 2022-08-19 | 中国科学院西安光学精密机械研究所 | Folded light path laser cutting head debugging method |
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