A multi-axis rotary cutting laser machining system

Abstract

The utility model discloses a kind of multi-axis rotary cutting laser processing systems, the system includes: zoom unit, for receiving incident light and zoom processing to light;Beam translation unit, for receiving the light of zoom unit emission, and the translation processing of light in X axis direction and Y axis direction;Beam tilt unit, for receiving the light of beam translation unit emission, and the propagation angle of light is tilted processing;Focusing unit, for receiving the light of beam tilt unit emission, and light is focused on the preset work surface;Beam translation unit includes X group reflector and Y group reflector, X group reflector includes first X reflector and second X reflector, Y group reflector includes first Y reflector and second Y reflector, first X reflector and second X reflector and first Y reflector and second Y reflector are all according to preset distance distribution.The utility model can improve the overall laser processing effect of multi-axis rotary cutting laser processing system.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, specifically to a multi-axis rotary laser processing system. Background Technology

[0002] Multi-axis rotary laser processing systems refer to systems that combine rotary motion with multi-axis linkage control to achieve high-precision, multi-dimensional material processing, such as... Figure 1 As shown, the multi-axis rotary laser cutting system specifically consists of a zoom group 01, a beam translation group 02, a beam tilting group 03, and a focusing lens group 04. Specifically, the beam divergence angle is adjusted by the zoom group 01, changing it from a diverging beam to a convergent beam. Combined with the focusing lens group 04, this allows for vertical adjustment of the working surface. The beam translation group 02 allows for horizontal or vertical movement of the beam. Combined with the focusing lens group 04, this changes the beam incident angle at points on the working surface. The beam tilting group 03 allows for vertical or horizontal tilting of the beam. Combined with the focusing lens group 04, this changes the position of points on the working surface.

[0003] like Figure 2 As shown, the beam translation group 02 in the system typically consists of two flat glass plates 021. These two plates 021 oscillate around two perpendicular axes, causing the beam to be translated in parallel directions. When the system area is within φ3mm, the galvanometer tilt angle of the beam tilting group 03 is less than 0.7°. However, if more coordinated control of the overall system is required, the size of the flat glass plates 021 needs to be increased. This would indirectly reduce the operating speed of the motor, resulting in a decrease in the overall laser processing efficiency. Utility Model Content

[0004] This utility model provides a multi-axis rotary cutting laser processing system, which aims to improve the overall laser processing effect of the multi-axis rotary cutting laser processing system.

[0005] This utility model embodiment provides a multi-axis rotary laser cutting processing system, including:

[0006] A zoom unit is used to receive incident light and zoom the light.

[0007] A beam translation unit is used to receive the light emitted from the zoom unit and translate the light in the X-axis and Y-axis directions.

[0008] A beam tilting unit is used to receive the light emitted from the beam translation unit and tilt the propagation angle of the light.

[0009] A focusing unit is used to receive light emitted from the beam tilting unit and focus the light onto a preset working surface;

[0010] The beam translation unit includes an X-group of reflectors and a Y-group of reflectors. The X-group of reflectors includes a first X-reflector and a second X-reflector that can be tilted. The Y-group of reflectors includes a first Y-reflector and a second Y-reflector that can be tilted. The first X-reflector, the second X-reflector, the first Y-reflector, and the second Y-reflector are all distributed at a preset distance.

[0011] Furthermore, the first Y-reflector is disposed between the first X-reflector and the second X-reflector, and the second X-reflector is disposed between the first Y-reflector and the second Y-reflector.

[0012] Furthermore, the preset distance is greater than or equal to 250mm.

[0013] Furthermore, the first X-mirror and the second X-mirror have the same and related swing angles, and the first Y-mirror and the second Y-mirror have the same and related swing angles.

[0014] Furthermore, the beam tilting unit is provided with at least two tilting mirrors that can be swung.

[0015] Furthermore, the maximum swing angle of the tilting mirror is comparable to the maximum swing angle of the X-group mirrors and the Y-group mirrors.

[0016] Furthermore, the focusing unit is provided with at least one focusing lens.

[0017] Furthermore, the aperture of the focusing unit is set according to the following formula:

[0018] a = b + 2d * tan(e)

[0019] Where a represents the aperture stop, b represents the diameter of the reference beam, d represents the focal length of the focusing lens, and e represents the angle of inclination of the light rays.

[0020] Furthermore, the zoom unit is provided with at least one zoom lens.

[0021] Furthermore, it also includes multiple fixed reflectors, which are distributed at different positions along the light propagation path.

[0022] This utility model provides a multi-axis rotary laser processing system, which includes: a zoom unit for receiving incident light and zooming the light; a beam translation unit for receiving light emitted from the zoom unit and translating the light in the X-axis and Y-axis directions; a beam tilting unit for receiving light emitted from the beam translation unit and tilting the propagation angle of the light; and a focusing unit for receiving light emitted from the beam tilting unit and focusing the light onto a preset working surface. The beam translation unit includes an X-group of reflectors and a Y-group of reflectors. The X-group of reflectors includes a wobbly first X-reflector and a second X-reflector, and the Y-group of reflectors includes a wobbly first Y-reflector and a second Y-reflector. The first X-reflector, the second X-reflector, the first Y-reflector, and the second Y-reflector are all distributed at preset distances. This utility model embodiment, through architectural design of the beam translation unit, can match the maximum amplitude of its swing angle with the maximum amplitude of the beam tilting unit. This reduces the driving difficulty caused by different loads during system control. Furthermore, based on the beam translation unit and the beam tilting unit, combined with the special optimization requirements of the focusing unit, the focal point position on the working surface can be completely controlled by the beam tilting group, unaffected by the beam translation unit. This facilitates the correction or editing of the point position, thereby improving the overall laser processing control effect of the multi-axis rotary cutting laser processing system. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a multi-axis rotary laser cutting system in the prior art;

[0025] Figure 2 This is a schematic diagram of the beam translation group in a multi-axis rotary laser processing system in the prior art.

[0026] Figure 3 A schematic diagram of a multi-axis rotary laser cutting system provided in this embodiment of the present invention;

[0027] Figure 4 This is an imaging schematic diagram of a focusing unit in a multi-axis rotary laser processing system provided for an embodiment of the present invention. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] Please see below. Figure 3 This utility model provides a multi-axis rotary laser cutting processing system, comprising:

[0033] The zoom unit 10 is used to receive incident light and zoom the light.

[0034] The beam translation unit 20 is used to receive the light emitted from the zoom unit 10 and translate the light in the X-axis and Y-axis directions.

[0035] The beam tilting unit 30 is used to receive the light emitted from the beam translation unit 20 and tilt the propagation angle of the light.

[0036] The focusing unit 40 is used to receive the light emitted from the beam tilting unit 30 and focus the light onto a preset working surface;

[0037] The beam translation unit 20 includes an X-group of reflectors and a Y-group of reflectors. The X-group of reflectors includes a first X-reflector 201 and a second X-reflector 202 that can be tilted. The Y-group of reflectors includes a first Y-reflector 203 and a second Y-reflector 204 that can be tilted. The first X-reflector 201 and the second X-reflector 202, as well as the first Y-reflector 203 and the second Y-reflector 204, are all distributed at a preset distance.

[0038] In this embodiment, the multi-axis rotary laser processing system includes a zoom unit 10, a beam translation unit 20, a beam tilting unit 30, and a focusing unit 40. The zoom unit 10 zooms the incident light beam; the beam translation unit 20 translates the light beam along the X and Y axes using X-group and Y-group mirrors respectively; the beam tilting unit 30 tilts the light beam at its propagation angle; and the focusing unit 40 focuses the light beam onto a preset working surface. Here, the mirrors of the beam translation unit 20 include a wobbly first X-mirror 201, a second X-mirror 202, a first Y-mirror 203, and a second Y-mirror 204, all distributed at preset distances.

[0039] This embodiment designs the beam translation unit 20 so that its maximum swing angle matches the maximum swing angle of the beam tilting unit 30. This reduces the driving difficulty caused by different loads during system control. Furthermore, based on the beam translation unit 20 and the beam tilting unit 30, and combined with the special optimization requirements of the focusing unit 40, the position of the focal point on the working surface can be completely controlled by the beam tilting group, unaffected by the beam translation unit 20. This facilitates the correction or editing of the point position, thereby improving the overall laser processing effect of the multi-axis rotary cutting laser processing system.

[0040] In one embodiment, the first Y-reflector 203 is disposed between the first X-reflector 201 and the second X-reflector 202, and the second X-reflector 202 is disposed between the first Y-reflector 203 and the second Y-reflector 204.

[0041] In this embodiment, the distance between two mirrors of the same group direction in the beam translation unit 20 is increased, and two groups of mirrors of different groups direction are placed in a cross arrangement. That is, a first Y mirror 203 is set between the first X mirror 201 and the second X mirror 202, and a second X mirror 202 is set between the first Y mirror 203 and the second Y mirror 204. This can shorten the overall optical path of the beam translation unit, thereby reducing mechanical processing deviations and relatively improving the overall accuracy and stability of the system.

[0042] In a specific embodiment, the preset distance is greater than or equal to 250mm.

[0043] Furthermore, the first X-reflector 201 and the second X-reflector 202 have the same and related swing angles, and the first Y-reflector 203 and the second Y-reflector 204 have the same and related swing angles.

[0044] In this embodiment, based on the beam translation unit 20 including X-group and Y-group reflectors, light can achieve the effect of moving horizontally and vertically, horizontally and vertically, or simultaneously in parallel. This allows the beam incident angle at a point on the working surface to be changed when the light finally passes through the focusing unit 40. The first X-reflector 201 and the second X-reflector 202 in the beam translation unit 20 have the same and related swing angles, thus achieving beam translation in the X direction; similarly, the first Y-reflector 203 and the second Y-reflector 204 in the beam translation unit 20 have the same and related swing angles, thus achieving beam translation in the Y direction. The optical path length between the first X-reflector 201 and the second X-reflector 202 in the beam translation unit 20 (i.e., ...) Figure 3 As shown, the distance from the first X-mirror 201 to the first Y-mirror 203 and the distance from the first Y-mirror 203 to the second X-mirror 202 are not less than 250 mm, with no upper limit, but their maximum swing angle is comparable to the maximum swing angle of the beam tilting unit 30; the optical path length between the first Y-mirror 203 and the second Y-mirror 204 in the beam translation unit 20 (i.e., as shown) Figure 3 As shown, the distance from the first Y-reflector 203 to the second X-reflector 202 and the distance from the second X-reflector 202 to the second Y-reflector 204 are not less than 250 mm, with no upper limit, but their maximum swing angle is comparable to the maximum swing angle of the beam tilting unit 30.

[0045] In some optional embodiments, in addition to the first Y-reflector 203, other reflectors (such as...) can be added between the first X-reflector 201 and the second X-reflector 202. Figure 3 The fixed reflector 50 in the first X-mirror 202 is used to fold the optical path, but the final swing direction of the second X-mirror 202 needs to be parallel with that of the first X-mirror 201 to control the beam translation in the X direction. Correspondingly, in addition to the second X-mirror 202, other fixed reflectors 50 can be added between the first Y-mirror 203 and the second Y-mirror 204 to fold the optical path, but the final swing direction of the second Y-mirror 204 needs to be parallel with that of the first Y-mirror 203 to control the beam translation in the Y direction. In practical applications, the optical path length between the first X-mirror 201 and the first Y-mirror 203 is 40-60mm, thus preserving sufficient space for motor installation and debugging.

[0046] In one embodiment, the beam tilting unit 30 is provided with at least two tilting mirrors 301 that can be tilted.

[0047] In this embodiment, after the light beam passes through the beam tilting unit 30, it can be tilted up and down, left and right, or up, down, left and right at the same time. Finally, when the beam passes through the focusing unit 40, the position of the point on the working surface can be changed.

[0048] Specifically, the maximum tilt angle of the tilting mirror 301 is comparable to the maximum tilt angle of the X-group and Y-group mirrors. Furthermore, the maximum tilt angle of the tilting mirror 301 is determined by the focal length of the focusing lens group and the system's working area. In practical applications, two tilting mirrors 301 are used: one to adjust the tilt angle in the X direction and the other to adjust the tilt angle in the Y direction. These two mirrors work together to ensure precise tilting of the beam in any direction, meeting the requirements of complex processes. In addition, a fixed mirror 50 for folding the optical path can also be provided between the beam tilting unit 30 and the beam translation unit 20 to optimize the overall optical path layout and reduce equipment space requirements. The position and number of fixed mirrors 50 can be flexibly adjusted according to actual optical path needs to ensure maximum beam transmission efficiency.

[0049] In one embodiment, the zoom unit 10 is provided with at least one zoom lens 101.

[0050] As light passes through the zoom unit 10, its beam divergence angle is adjusted, either becoming a diverging beam or a convergent beam. Finally, when the beam passes through the focusing unit 40, the working surface can be adjusted vertically. In practical applications, two zoom lenses 101 are used to further improve the zoom accuracy and stability of the beam through the synergistic effect of the two zoom lenses 101, meeting the requirements of high-precision processing.

[0051] Furthermore, the focusing unit 40 is provided with at least one focusing lens 401.

[0052] This embodiment enables the focusing of a light beam through the focusing lens 401. For example, in practical applications, two focusing lenses 401 are used to further improve the focusing accuracy and stability of the light beam through the synergistic effect of the two focusing lenses 401, thus meeting the requirements of high-precision processing. Of course, in other scenarios, the focusing lens 401 can be specifically set according to actual needs.

[0053] Here, when the spacing between the internal lenses of the zoom unit 10 changes, the height of the beam focal point behind the focusing unit 40 changes; when the mirror inside the beam translation unit 20 tilts in tandem, causing the beam to translate vertically / horizontally, the incident angle of the beam behind the focusing unit 40 changes; when the mirror inside the beam tilt unit 30 swings, causing the beam to tilt vertically / horizontally, the focal point position behind the focusing unit 40 changes. Therefore, the focusing unit 40 can be optimized in this way.

[0054] Specifically, the aperture of the focusing unit 40 is set according to the following formula:

[0055] a = b + 2d * tan(e)

[0056] Where a represents the aperture stop, b represents the diameter of the reference beam, d represents the focal length of the focusing lens, and e represents the angle of inclination of the light rays.

[0057] For example, such as Figure 4 As shown, when the beam tilt angle is 5°, the marking area is φ1mm, the diameter of the reference beam in the system is 5mm, and the focal length of the focusing unit 40 is 50mm, then according to the above formula, we can calculate 5 + 2 * 50 * tan(5°) = 13.8mm, that is, the aperture size is 13.8mm. Based on this, the focusing unit 40 is optimized across the entire field of view (φ1mm) to ensure that the geometric size of the imaging point from 0 to a radius of 0.5mm is less than the marking repeatability. This allows the focal point position of the working surface to be controlled only by the beam tilt group and not by the beam translation group.

[0058] In one embodiment, the multi-axis rotary laser processing system further includes a plurality of fixed reflectors 50, which are distributed at different positions along the light propagation path.

[0059] For example, fixed mirrors 50 can be set between the zoom unit 10 and the beam translation unit 20, between the beam translation unit 20 and the beam tilting unit 30, and between the beam tilting unit 30 and the focusing unit 40. By arranging these fixed mirrors 50 in a reasonable manner, the optical path can be folded and the design space can be simplified, thereby facilitating the installation and adjustment of components.

[0060] It should be noted that in practical applications, the distance between the first X-mirror 201 and the second X-mirror 202 in the beam translation unit 20 described in this embodiment needs to be appropriately set and optimized according to the system parameters to ensure that the maximum swing angle is small and comparable to that of the beam tilting unit 30. At the same time, the lens sizes of the first X-mirror 201 and the second X-mirror 202 also need to be set accordingly. In addition, the focusing unit 40 also needs to be reasonably optimized to balance the geometric size of the image point in the entire field of view. It is also necessary to take into account factors such as the number of lenses, anti-focus, and tolerances of the focusing unit 40. For example, if the number of lenses is too small, it will be difficult to meet the requirements for the geometric size of the image point in the entire field of view, while if the number of lenses is too large, the tolerance will be affected more, which will lead to the deterioration of the geometric size of the image point in the entire field of view after processing and installation.

[0061] In actual production, the multi-axis rotary laser processing system provided in this embodiment can achieve optimal speeds for both the beam translation unit 20 and the beam tilting unit 30 during rotary cutting within a width of φ3mm. Furthermore, through specific optimization of the focusing unit 40, the beam tilting group can be made unaffected by the oscillation of the beam translation group.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0063] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A multi-axis rotary laser cutting system, characterized in that, include: A zoom unit is used to receive incident light and zoom the light. A beam translation unit is used to receive the light emitted from the zoom unit and translate the light in the X-axis and Y-axis directions. A beam tilting unit is used to receive the light emitted from the beam translation unit and tilt the propagation angle of the light. A focusing unit is used to receive light emitted from the beam tilting unit and focus the light onto a preset working surface; The beam translation unit includes an X-group of reflectors and a Y-group of reflectors. The X-group of reflectors includes a first X-reflector and a second X-reflector that can be tilted. The Y-group of reflectors includes a first Y-reflector and a second Y-reflector that can be tilted. The first X-reflector, the second X-reflector, the first Y-reflector, and the second Y-reflector are all distributed at a preset distance.

2. The multi-axis rotary laser processing system according to claim 1, characterized in that, The first Y-reflector is disposed between the first X-reflector and the second X-reflector, and the second X-reflector is disposed between the first Y-reflector and the second Y-reflector.

3. The multi-axis rotary laser processing system according to claim 1, characterized in that, The preset distance is greater than or equal to 250mm.

4. The multi-axis rotary laser processing system according to claim 1, characterized in that, The first X-mirror and the second X-mirror have the same and related swing angles, and the first Y-mirror and the second Y-mirror have the same and related swing angles.

5. The multi-axis rotary laser processing system according to claim 1, characterized in that, The beam tilting unit is equipped with at least two tilting mirrors that can be tilted.

6. The multi-axis rotary laser processing system according to claim 5, characterized in that, The maximum swing angle of the tilted reflector is comparable to the maximum swing angle of the X-group reflectors and the Y-group reflectors.

7. The multi-axis rotary laser processing system according to claim 1, characterized in that, The focusing unit is provided with at least one focusing lens.

8. The multi-axis rotary laser processing system according to claim 7, characterized in that, The aperture of the focusing unit is set according to the following formula: a = b + 2d * tan(e) Where a represents the aperture stop, b represents the diameter of the reference beam, d represents the focal length of the focusing lens, and e represents the angle of inclination of the light rays.

9. The multi-axis rotary laser processing system according to claim 1, characterized in that, The zoom unit is provided with at least one zoom lens.

10. The multi-axis rotary laser processing system according to claim 1, characterized in that, It also includes multiple fixed reflectors, which are distributed at different positions along the light propagation path.

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