CN214641005U - Variable facula laser cutting head device - Google Patents
Variable facula laser cutting head device Download PDFInfo
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- CN214641005U CN214641005U CN202120496561.0U CN202120496561U CN214641005U CN 214641005 U CN214641005 U CN 214641005U CN 202120496561 U CN202120496561 U CN 202120496561U CN 214641005 U CN214641005 U CN 214641005U
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Abstract
The utility model relates to a variable facula laser cutting head device, support fixed frame, first optical system protective glass, become the spot and adjust group, the focusing mirror group, second optical system protective glass, third optical system protective glass, cutting gas direction subassembly, cutting nozzle, become the group actuating mechanism, the group actuating mechanism is organized to the spot mirror, the focusing mirror group, the second optical system protective glass including laser optical fiber delivery head, laser optical fiber delivery head coupler, first optical system protective glass, become the spot and adjust group, the focusing mirror group, the group is organized, the focusing mirror group, the protective glass of second optical system, third optical system protective glass, the gaseous direction subassembly of cutting, the central axis of cutting nozzle is theoretical on same straight line. Adopted the utility model discloses a variable facula laser cutting head device improves the parting joint quality and the precision of laser cutting material, solves the little problem of facula variation range of current removal collimating mirror, realizes adjusting facula size and focus position.
Description
Technical Field
The utility model relates to a laser cutting technology and equipment technical field especially relate to the hot cutting field, specifically indicate a variable facula laser cutting head device.
Background
Laser cutting is a thermal cutting method in which a workpiece is irradiated with a focused high-power-density laser beam to rapidly melt, vaporize, ablate or reach the ignition point of the material at the irradiated site, and the melted material is blown off by means of a high-speed gas stream coaxial with the beam, thereby separating the workpiece. The laser cutting zone principle is shown in reference 1 (reference 1: leaf construction and bin, dychun. laser cutting technique [ M ] Shanghai: Shanghai science and technology Press, 2012.7).
As in the laser cutting principle described above, the control of the characteristics of the spot focused on the surface of the workpiece, including the spot diameter and the focal depth, is particularly critical. The specific parameter approximation relationship is as follows:
for a better understanding of the overall hardware environment, the laser cutting head hardware will now be briefly described. As shown in fig. 1, the laser cutting head hardware includes a laser fiber output head, a beam collimating optic, a beam focusing optic, a laser beam generated by a laser generator, and a work piece. The laser fiber output head emits laser beams generated by the laser generator in a divergent mode to irradiate the laser beams to the light beam collimating lens, the light beam collimating lens collimates the divergent light beams, and the light beam focusing lens converges the collimated and folded light beams and irradiates the light beams to the surface of a workpiece. (reference 2: Kitaki 20778, a practical technique for laser processing [ M ] Beijing: Metallurgical Press, 2013.9)
As described above, to the characteristics of the light spot
And ZdThere are 2 common ways to perform control, as shown in fig. 2 and 3. Fig. 2 shows a focusing mode of the focusing lens, and fig. 3 shows a focusing mode of the collimating lens.
As shown in fig. 2, the position of the focusing lens group is adjusted to make the focal point of the light spot deviate up and down relative to the surface of the workpiece, thereby improving the processing conditions. The spot control method does not substantially change the spot characteristics
And Zd. In the practical application process, aiming at plate thickness workpieces in different ranges, the problem that the cutting seam is too wide due to the fact that lenses with short focal lengths are used, the inclination of a groove of a plate partition seam with large cutting thickness is large or lenses with long focal lengths are used can occur.
As shown in fig. 3, by positioning the collimating mirrorAnd adjusting to make the focal point of the light spot deviate up and down relative to the surface of the workpiece, and simultaneously, the diameter and the focal depth of the light spot are slightly changed. This spot control method also has similar problems to the method of fig. 2, although this method can change the spot diameter to some extent
And depth of focus ZdHowever, the change of the optical spot is only 1.2 to 2 times of the diameter of the optical spot. (reference 2: http:// www.empower.cn/RTqgt/20181029210.html)
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming of above-mentioned prior art, providing one kind and satisfying the facula change range big, process effectual, the extensive variable facula laser cutting head device of application scope.
In order to achieve the above object, the utility model discloses a variable facula laser cutting head device as follows:
the variable-spot laser cutting head device is mainly characterized in that the system comprises a laser optical fiber output head, a laser optical fiber output head coupler, an integral optical system supporting and fixing frame, a first optical system protecting lens, a variable-spot adjusting lens group, a focusing lens group, a second optical system protecting lens, a third optical system protecting lens, a cutting gas guide assembly, a cutting nozzle, a variable-spot lens group driving mechanism and a focusing lens group driving mechanism, the central axes of the laser optical fiber output head coupler, the first optical system protecting lens, the variable-spot adjusting lens group, the focusing lens group, the second optical system protecting lens, the third optical system protecting lens, the cutting gas guide assembly and the cutting nozzle are theoretically on the same straight line, and the central axes of the laser optical fiber output head coupler, the first optical system protecting lens, the focusing lens group, the second optical system protecting lens, the third optical system protecting lens, the cutting gas guide assembly and the cutting nozzle are theoretically on the same straight line, The second optical system protective mirror, the third optical system protective mirror, the cutting gas guide assembly, the variable-spot mirror group driving mechanism and the focusing mirror group driving mechanism are fixed with the integral optical system supporting and fixing frame, and the laser optical fiber output head is arranged on the laser optical fiber output head coupler.
Preferably, the system further comprises a laser, the light beam generated by the laser is folded after passing through the spot-changing adjusting mirror group, is adjusted through the focusing mirror group, is focused through the focusing mirror group, and is irradiated on the working surface of the workpiece by the output light spot, the size of which meets the preset requirement and can be continuously changed.
Preferably, the variable spot adjusting mirror group is driven by the variable spot mirror group driving mechanism to move up and down relative to the whole optical system supporting and fixing frame along the light beam axis.
Preferably, the focusing mirror group is driven by a focusing mirror group driving mechanism to move up and down relative to the whole optical system supporting and fixing frame along the beam axis.
Preferably, the laser fiber output head coupler connects and fixes the laser fiber output head and the laser cutting head.
Adopted the utility model discloses a variable facula laser cutting head device can carry out the laser spot diameter and the depth of focus of output and control to solve the cutting technological problem of different thickness materials, improve the parting joint quality and the precision of laser cutting material. The utility model provides a this kind of become light spot laser cutting device disposes the lens subassembly of adjusting the light spot, makes the facula range of change bigger, has solved the little problem of the facula range of change of current removal collimating mirror. The utility model provides a become light spot laser cutting device under the lens subassembly condition that disposes the facula and adjust, has kept original focus adjusting device, has realized adjusting facula size and focus position simultaneously.
Drawings
FIG. 1 is a prior art laser cutting head hardware schematic.
Fig. 2 is a schematic diagram of a focusing manner of a focusing lens in the prior art.
Fig. 3 is a schematic diagram of a focusing manner of a collimator lens in the prior art.
Fig. 4 is the structure schematic diagram of the variable facula laser cutting head device of the utility model.
Fig. 5 is a schematic structural view of the variable spot laser cutting head device of the present invention.
Reference numerals:
1 laser optical fiber output head
2 laser optical fiber output head coupler
3 integral optical system supporting and fixing frame
4 first optical system protective glasses
5 variable spot adjusting lens group
6 focusing lens group
7 focusing lens group
8 second optical system protective glasses
9 third optical system protective glasses
10 cutting gas guide assembly
10a cutting gas
11 cutting nozzle
12 workpiece
13 varifocal lens group driving mechanism
14 focusing lens group driving mechanism
15 laser
21 collimating lens group
22 focusing lens group driving mechanism
23 focusing lens group supporting seat assembly
24 collimating lens group driving mechanism
25 collimating lens group supporting seat assembly
Detailed Description
In order to more clearly describe the technical content of the present invention, the following further description is given with reference to specific embodiments.
The utility model discloses a this variable facula laser cutting head device, including laser optical fiber delivery head 1, laser optical fiber delivery head coupler 2, whole optical system support fixed frame 3, first optical system protective glass 4, become the spot and adjust group 5, the focusing mirror group 6, the focusing mirror group 7, second optical system protective glass 8, third optical system protective glass 9, cutting gas direction subassembly 10, cutting nozzle 11, become the spot and organize actuating mechanism 13, focusing mirror group actuating mechanism 14, laser optical fiber delivery head coupler 2, first optical system protective glass 4, become the spot and adjust group 5, focusing mirror group 6, the focusing mirror group 7, the second optical system protective glass 8, third optical system protective glass 9, cutting gas direction subassembly 10, the central axis of cutting nozzle 11 theoretically on same straight line, laser optical fiber delivery head coupler 2, 2 optical fiber delivery head coupler, The first optical system protective mirror 4, the focusing lens group 7, the second optical system protective mirror 8, the third optical system protective mirror 9, the cutting gas guide assembly 10, the variable spot lens group driving mechanism 13 and the focusing lens group driving mechanism 14 are fixed with the integral optical system supporting and fixing frame 3, and the laser optical fiber output head 1 is arranged on the laser optical fiber output head coupler 2.
Preferably, the system further comprises a laser 15, the light beam generated by the laser 15 is folded after passing through the variable spot adjusting mirror group 5, is adjusted by the focusing mirror group 6, is focused by the focusing mirror group 7, and is irradiated on the working surface of the workpiece by the output light spot, the size of which meets the preset requirement and can be continuously changed.
Preferably, the variable spot adjusting mirror group 5 is driven by the variable spot mirror group driving mechanism 13 to move up and down along the light beam axis relative to the whole optical system supporting and fixing frame 3.
Preferably, the focusing lens assembly 6 is driven by a focusing lens assembly driving mechanism 14 to move up and down along the beam axis relative to the entire optical system supporting and fixing frame 3.
Preferably, the laser fiber output head coupler 2 connects and fixes the laser fiber output head 1 and the laser cutting head.
The utility model discloses an among the concrete implementation mode, on original laser cutting hardware equipment, increased a set of adjustable facula mirror group for control laser facula focus. The utility model discloses dispose and become light facula group and focus adjusting mirror group, can realize adjusting simultaneously facula size and focus position.
To the above defect of prior art or improve the demand, the utility model provides a become light spot cutting device, its aim at solve current removal collimating mirror or focus lens become light spot mode facula variation range little, the poor problem of processing effect.
The diameter and the focal depth of the facula can be controlled only by adjusting the relative position of the lens without changing the specification of the lens. The diameter of the spot varies over a range of more than the existing magnification of only 2. The utility model discloses on the realization is to the regulation basis of facula, remain the adjustable control of original focus position simultaneously.
In order to achieve the purpose, the utility model discloses on the basis of scheme figure 2, the innovative a set of variegated adjusting mirror group that increases.
The utility model discloses whole hardware constitution is as shown in the attached drawing, wherein support fixed frame 3, first optical system protective glass 4, become the speckle adjusting mirror group 5, the focusing mirror group 6, the focusing mirror group 7, second optical system protective glass 8, third optical system protective glass 9, cutting gas direction subassembly 10, cutting nozzle 11, become the speckle mirror group actuating mechanism 13, the focusing mirror group actuating mechanism 14 including laser optic fibre delivery head coupler 2, whole optical system. It should be noted that the central axes of the laser fiber output head coupler 2, the first optical system protective lens 4, the variable spot adjusting lens group 5, the focusing lens group 6, the focusing lens group 7, the second optical system protective lens 8, the third optical system protective lens 9, the cutting gas guide assembly 10 and the cutting nozzle 11 are theoretically on the same straight line.
The variable spot adjusting mirror group 5 can move up and down the focusing mirror group 6 relative to the integral optical system supporting and fixing frame 3 along the beam axis under the driving of the variable spot mirror group driving mechanism 13, and can move up and down relative to the integral optical system supporting and fixing frame 3 along the beam axis under the driving of the focusing mirror group driving mechanism 14.
The laser optical fiber output head coupler 2, the first optical system protective lens 4, the second optical system protective lens 8, the third optical system protective lens 9, the focusing lens group 7 and the focusing lens group 10 cutting and cutting gas guide assembly, the variable spot lens group driving mechanism 13 and the focusing lens group driving mechanism 14 are fixed with the integral optical system supporting and fixing frame 3.
The laser optical fiber output head coupler 2 is used for connecting and fixing the laser optical fiber output head 1 and the laser cutting head.
The first optical system protective mirror 4 is easy to replace and maintain on the whole equipment, and has the function of blocking dust, water drops or other foreign matters introduced when the execution laser optical fiber output head 1 is connected and fixed with the laser cutting head.
The second optical system protective mirror 8 is easy to replace and maintain on the whole equipment, and has the function of preventing dust from entering the interior of the optical system of the laser cutting head when the third optical system protective mirror 9 is replaced, so that redundant protection is formed between the dust and the third optical system protective mirror 9.
The third optical system protective mirror 9 is easy to replace and maintain on the whole equipment, and has the function of preventing the cutting gas 10a from entering the optical cavity from the cavity inside the cutting gas guide assembly 10 under the normal working state of the whole equipment, so that the pollution to the third optical system protective mirror 9 is avoided.
The utility model discloses an adoption removes the adjustment to two sets of lenses and realizes control and adjustment to the facula characteristic, compares current removal collimating mirror and becomes the spot method or focusing mirror and adjust the way and have facula range of variation wider, and the facula characteristic changes and accords with actual demand more. The present invention will be further specifically described with reference to the following examples and drawings.
The structure of the variable spot laser cutting apparatus provided in embodiment 1 is as illustrated in fig. 4, and includes a variable spot adjusting mirror group 5 and a variable spot mirror group drive mechanism 13, a focusing mirror group 6 and a focusing mirror group drive mechanism 14, and a focusing mirror group 7. The light beam generated by the laser 15 is converged after passing through the spot-changing adjusting mirror group 5, then is adjusted by the focusing mirror group 6, and finally is focused by the focusing mirror group 7, and the light spot which has the size meeting the preset requirement and can be continuously changed is output and irradiated on the working surface of the workpiece.
The variable spot adjusting mirror group 5 of the variable spot laser cutting device provided by the embodiment moves under the driving of the variable spot mirror group driving mechanism 13, so as to realize the control of the light spot characteristics. The focusing lens group 6 provided by the embodiment moves under the driving of the focusing lens group driving mechanism 14, so as to realize the control of the focal position of the light spot. In summary, the spot characteristics and the spot focal position can be controlled simultaneously. The lens used by the focusing lens group of the spot-variable laser cutting device provided by the embodiment is a biconcave lens,
adopted the utility model discloses a variable facula laser cutting head device can carry out the laser spot diameter and the depth of focus of output and control to solve the cutting technological problem of different thickness materials, improve the parting joint quality and the precision of laser cutting material. The utility model provides a this kind of become light spot laser cutting device disposes the lens subassembly of adjusting the light spot, makes the facula range of change bigger, has solved the little problem of the facula range of change of current removal collimating mirror. The utility model provides a become light spot laser cutting device under the lens subassembly condition that disposes the facula and adjust, has kept original focus adjusting device, has realized adjusting facula size and focus position simultaneously.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (5)
1. The variable-spot laser cutting head device is characterized by comprising a laser optical fiber output head (1), a laser optical fiber output head coupler (2), an integral optical system supporting and fixing frame (3), a first optical system protecting lens (4), a variable-spot adjusting lens group (5), a focusing lens group (6), a focusing lens group (7), a second optical system protecting lens (8), a third optical system protecting lens (9), a cutting gas guiding assembly (10), a cutting nozzle (11), a variable-spot lens group driving mechanism (13) and a focusing lens group driving mechanism (14), wherein the laser optical fiber output head coupler (2), the first optical system protecting lens (4), the variable-spot adjusting lens group (5), the focusing lens group (6), the focusing lens group (7), the second optical system protecting lens (8), the third optical system protecting lens (9), The central axes of the cutting gas guide assembly (10) and the cutting nozzle (11) are theoretically on the same straight line, the laser optical fiber output head coupler (2), the first optical system protective mirror (4), the focusing mirror group (7), the second optical system protective mirror (8), the third optical system protective mirror (9), the cutting gas guide assembly (10), the variable spot mirror group driving mechanism (13) and the focusing mirror group driving mechanism (14) are fixed with the integral optical system supporting and fixing frame (3), and the laser optical fiber output head (1) is arranged on the laser optical fiber output head coupler (2).
2. The variable-spot laser cutting head device according to claim 1, wherein the system further comprises a laser (15), a light beam generated by the laser (15) is converged after passing through the variable-spot adjusting lens group (5), is adjusted by the focusing lens group (6), is focused by the focusing lens group (7), and is output as a continuously variable spot with a size meeting a preset requirement to irradiate on the working surface of the workpiece.
3. The variable-spot laser cutting head device according to claim 1, wherein the variable-spot adjusting mirror group (5) is driven by a variable-spot mirror group driving mechanism (13) to move up and down relative to the entire optical system supporting and fixing frame (3) along a beam axis.
4. The variable-spot laser cutting head device according to claim 1, wherein the focusing lens group (6) is driven by a focusing lens group driving mechanism (14) to move up and down relative to the whole optical system supporting and fixing frame (3) along the beam axis.
5. The variable-spot laser cutting head device according to claim 1, wherein the laser fiber output head coupler (2) connects and fixes the laser fiber output head (1) and the laser cutting head.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120496561.0U CN214641005U (en) | 2021-03-09 | 2021-03-09 | Variable facula laser cutting head device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120496561.0U CN214641005U (en) | 2021-03-09 | 2021-03-09 | Variable facula laser cutting head device |
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| CN214641005U true CN214641005U (en) | 2021-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289860A (en) * | 2022-01-27 | 2022-04-08 | 大族激光科技产业集团股份有限公司 | Laser cutting method, device, equipment and storage medium |
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2021
- 2021-03-09 CN CN202120496561.0U patent/CN214641005U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114289860A (en) * | 2022-01-27 | 2022-04-08 | 大族激光科技产业集团股份有限公司 | Laser cutting method, device, equipment and storage medium |
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