Light spot size adjusting mechanism and machine tool

Abstract

The utility model discloses a light spot size adjusting mechanism and a machine tool. The light spot size adjusting mechanism comprises a mounting base and a light spot adjusting assembly. A mounting cavity is formed in the mounting seat, a first through hole and a second through hole are formed in two opposite side walls of the mounting seat, and the first through hole and the second through hole are coaxially formed; the light spot adjusting assembly is installed in the installation cavity and comprises a first optical lens, a second optical lens and a third optical lens which are sequentially arranged in the direction from the first through hole to the second through hole. Wherein the second optical lens is fixedly mounted on the mounting base, and the first optical lens is movably arranged in the direction from the first through hole to the second through hole so as to adjust the distance between the first optical lens and the second optical lens. The third optical lens is movably arranged in the direction from the first through hole to the second through hole so as to adjust the distance between the third optical lens and the second optical lens. According to the light spot size adjusting mechanism and the machine tool, the problem that in the related technology, laser light spots cannot be adjusted can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining devices, and more particularly, to a spot size adjusting mechanism and a machine tool. Background Art

[0002] Laser is a kind of light emitted by atomic stimulated emission. When electrons in an atom absorb energy and transition from a low energy level to a high energy level, and then fall back from the high energy level to the low energy level, the released energy is emitted in the form of photons. Laser has very high energy and is called the fastest knife; currently, it is widely used in laser marking, laser cutting, laser welding, etc.

[0003] In related laser cutting machine tools, the size of the laser spot cannot be adjusted, which cannot meet the processing requirements in different situations. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a spot size adjusting mechanism and a machine tool to solve the problem that the laser spot cannot be adjusted in related technologies.

[0005] According to one aspect of the utility model, a spot size adjusting mechanism is provided, including:

[0006] A mounting seat, which has a mounting cavity inside. First through holes and second through holes are respectively provided on two opposite side walls of the mounting seat, and the first through hole and the second through hole are coaxially arranged;

[0007] A spot adjusting assembly, which is installed in the mounting cavity. The spot adjusting assembly includes a first optical lens, a second optical lens, and a third optical lens arranged in sequence along the direction from the first through hole to the second through hole;

[0008] Wherein, the second optical lens is fixedly installed on the mounting seat. The first optical lens is movably arranged along the direction from the first through hole to the second through hole to adjust the distance between the first optical lens and the second optical lens, and the third optical lens is movably arranged along the direction from the first through hole to the second through hole to adjust the distance between the third optical lens and the second optical lens.

[0009] Furthermore, the spot size adjusting mechanism includes a driving assembly, which is arranged inside the mounting seat to drive the first optical lens and the third optical lens to move.

[0010] Furthermore, the driving assembly includes:

[0011] A guide rail component, on which the first optical lens and the second optical lens that can move are arranged;

[0012] A driving component, which is fixedly arranged on the mounting base to drive the first optical lens and the third optical lens to move along the guide rail component.

[0013] Furthermore, the guide rail component includes:

[0014] A first guide rail, which is arranged on the first side wall surface of the mounting cavity and extends along the direction from the first through hole to the second through hole. The first optical lens is movably arranged on the first guide rail through a first slider;

[0015] A second guide rail, which is arranged on the second side wall surface of the mounting cavity opposite to the first side wall surface and extends along the direction from the first through hole to the second through hole. The second optical lens is movably arranged on the second guide rail through a second slider.

[0016] Furthermore, the driving component includes:

[0017] A first driving motor, which is fixed in the mounting cavity and is drivingly connected to the first slider;

[0018] A second driving motor, which is fixed in the mounting cavity and is drivingly connected to the second slider.

[0019] Furthermore, both the first driving motor and the second driving motor are magnetic levitation motors.

[0020] Furthermore, the first optical lens, the second optical lens and the third optical lens are all circular lenses, and the first through hole, the second through hole and the circular lenses are coaxially arranged.

[0021] Furthermore, the mounting base includes a cuboid, and the length of the cuboid is 65 mm to 75 mm, the width is 55 mm to 65 mm, and the height is 55 mm to 65 mm.

[0022] On the other hand, the present application also provides a machine tool, and the machine tool includes the above-mentioned spot size adjusting mechanism.

[0023] Furthermore, the machine tool includes a laser welding machine tool.

[0024] In the present utility model, when the spot size adjusting mechanism is installed at the cutting head of a machine tool, such as a laser cutting machine, the laser beam can enter through the first through hole and exit through the second through hole. Among them, the first optical lens is used to focus the laser beam incident from the first through hole, the second optical lens is used to expand the beam emitted from the first optical lens, and the third optical lens is used to make the expanded beam exit parallel through the second through hole. Since both the first optical lens and the third optical lens in the present utility model can move along the direction from the first through hole to the second through hole, by moving the first optical lens and the third optical lens, the distances between the first optical lens and the third optical lens and the second optical lens can be changed, and thus the spot size of the laser beam can be adjusted, enabling machine tools such as laser cutting machines to meet different processing and usage requirements and improving the practicality of the machine tools. Description of the Drawings

[0025] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0026] Figure 1 It is a three-dimensional structure diagram of the spot size adjusting mechanism disclosed in the embodiment of the present application.

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 10. Mounting base; 11. Mounting cavity; 111. First side wall surface; 112. Second side wall surface; 12. First through hole; 20. Spot adjusting assembly; 21. First optical lens; 22. Second optical lens; 23. Third optical lens; 31. Guide rail component; 311. First guide rail; 312. Second guide rail; 32. Driving component; 321. First driving motor; 322. Second driving motor; 33. First slider; 34. Second slider. Detailed Embodiment

[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] It should be noted that the terms used herein are only for describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0032] Referring to Figure 1 As shown, according to an embodiment of the present application, a spot size adjustment mechanism is provided, and the spot size adjustment mechanism includes a mounting base 10 and a spot adjustment assembly 20.

[0033] Specifically, the mounting base 10 has a mounting cavity 11 therein. First through holes 12 and second through holes (not shown in the figure) are respectively provided on two opposite side walls of the mounting base 10, and the first through holes 12 and the second through holes are coaxially arranged. The spot adjustment assembly 20 is installed in the mounting cavity 11, and the spot adjustment assembly 20 includes a first optical lens 21, a second optical lens 22, and a third optical lens 23 arranged in sequence along the direction from the first through hole 12 to the second through hole. Among them, the second optical lens 22 is fixedly installed in the mounting cavity 11, the first optical lens 21 is movably arranged along the direction from the first through hole 12 to the second through hole to adjust the distance between the first optical lens 21 and the second optical lens 22, and the third optical lens 23 is movably arranged along the direction from the first through hole 12 to the second through hole to adjust the distance between the third optical lens 23 and the second optical lens 22.

[0034] In actual use, the spot size adjusting mechanism in this embodiment is installed on a machine tool, such as the cutting head of a laser cutting machine. The laser beam can enter through the first through hole 12 and exit through the second through hole. Among them, the first optical lens 21 is used to converge the laser beam incident from the first through hole 12, the second optical lens 22 is used to expand the beam emitted from the first optical lens 21, and the third optical lens 23 is used to make the expanded beam exit parallel from the second through hole. Since the first optical lens 21 and the third optical lens 23 in this embodiment can both move along the direction from the first through hole 12 to the second through hole, by moving the first optical lens 21 and the third optical lens 23, the distances between the first optical lens 21 and the third optical lens 23 and the second optical lens 22 can be changed, and thus the spot size of the laser beam can be adjusted, enabling machine tools such as laser cutting machines to meet different processing and usage requirements and improving the practicality of the machine tool.

[0035] At the same time, in this embodiment, by making both the first optical lens 21 and the third optical lens 23 movable, it is more convenient to adjust the focal length, and the spot size adjustment is faster and more accurate.

[0036] Furthermore, the spot size adjusting mechanism in this embodiment further includes a driving component, which is arranged inside the mounting seat 10 to drive the first optical lens 21 and the third optical lens 23 to move, and thus the distances between the first optical lens 21 and the third optical lens 23 and the second optical lens 22 can be adjusted. The structure is simple and easy to control.

[0037] Specifically, the driving component in this embodiment includes a guide rail component 31 and a driving component 32. Among them, the first optical lens 21 and the third optical lens 23 that can move are arranged on the guide rail component 31; the driving component 32 is fixedly arranged on the mounting seat 10 to drive the first optical lens 21 and the second optical lens 22 to move along the guide rail component 31. For the convenience of installation and adjustment, the guide rail component 31 in this embodiment includes a first guide rail 311 and a second guide rail 312. Among them, the first guide rail 311 is arranged on the first side wall surface 111 of the installation cavity 11, and the first guide rail 311 extends along the direction from the first through hole 12 to the second through hole. The first optical lens 21 is slidably arranged on the first guide rail 311 through a first slider 33; the second guide rail 312 is arranged on the second side wall surface 112 of the installation cavity 11 opposite to the first side wall surface 111, and the second guide rail 312 extends along the direction from the first through hole 12 to the second through hole. The third optical lens 22 is slidably arranged on the second guide rail 312 through a second slider 34. In this embodiment, by arranging the first guide rail 311 and the second guide rail 312 to install and support the first optical lens 21 and the third optical lens 23 respectively, in this way, the movements of the first optical lens 21 and the third optical lens 23 do not interfere with each other, and it is more convenient to adjust the spot size of the light spot emitted from the spot size adjusting mechanism.

[0038] Of course, in other embodiments of the present application, the guide rail component 31 may also be provided with only one guide rail. During installation, the first optical lens 21 and the third optical lens 23 can be movably installed on the same guide rail. As long as it is other deformation methods under the concept of the present application, they are all within the protection scope of the present application.

[0039] Furthermore, the driving component 32 in this embodiment includes a first driving motor (not shown in the figure) and a second driving motor 322. Among them, the first driving motor is fixed in the installation cavity 11 and is drivingly connected to the first slider 33; the second driving motor 322 is fixed in the installation cavity 11 and is drivingly connected to the second slider 34. By setting the first driving motor and the second driving motor 322 to drive the first slider 33 and the second slider 34 to move along the first guide rail 311 and the second guide rail 312 respectively in this embodiment, the first optical lens 21 and the third optical lens 23 can be driven to move respectively. The first optical lens 21 and the third optical lens 23 can be independently adjusted and moved, which is more convenient for adjusting the spot size.

[0040] Optionally, the first driving motor 321 and the second driving motor 322 in this embodiment are both magnetic levitation motors. A magnetic levitation motor is a motor that uses magnetic levitation technology to achieve the rotation of the rotor in a non-contact state. A transmission structure can be provided between the motor and the slider for power transmission. Exemplarily, the transmission structure can be a combined structure of a rack and a gear, or a lead screw assembly and other structures. The magnetic levitation motor has the characteristics of low friction, low wear, low noise, and high driving accuracy, which is convenient for driving the first slider 33 and the second slider 34 to drive the first optical lens 21 and the third optical lens 23 to move precisely, and is convenient for continuously adjusting the spot size steplessly, so that the machine tool can adapt to different usage requirements.

[0041] The first optical lens 21, the second optical lens 22, and the third optical lens 23 in this embodiment are all circular lenses. The first through hole 12, the second through hole, and the circular lens are coaxially arranged, which is not only convenient for the light beam to enter or exit, but also can quickly and effectively adjust the spot size. Of course, in other embodiments of the present application, the first optical lens 21, the second optical lens 22, and the third optical lens 23 can also be square, triangular, elliptical, or other polygons or special-shaped structures. As long as it is other deformation methods under the concept of the present application, they are all within the protection scope of the present application.

[0042] Furthermore, the mounting base 10 in this embodiment includes a cuboid. The length of the cuboid is from 65 mm to 75 mm, such as 65 mm, 70 mm or 75 mm; the width is from 55 mm to 65 mm, such as 55 mm, 60 mm or 65 mm; and the height is from 55 mm to 65 mm, such as 55 mm, 60 mm or 65 mm. Exemplarily, the length of the mounting base 10 in this embodiment is 70 mm, the width is 60 mm, and the height is 60 mm. In this embodiment, the spot component 30 is integrally arranged in the mounting base 10 with a length from 65 mm to 75 mm, a width from 55 mm to 65 mm, and a height from 55 mm to 65 mm, which is convenient for installation on different laser processing devices.

[0043] On the other hand, the present application also discloses a machine tool, which includes the above-mentioned spot size adjusting mechanism. Therefore, the machine tool includes all the technical effects of the above-mentioned spot size adjusting mechanism. Since the effects of the spot size adjusting mechanism have been described in detail above, they will not be elaborated here. Optionally, the machine tool in this embodiment includes a laser welding machine tool, a fusion welding machine tool, etc.

[0044] For the sake of convenience in description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used here will be made.

[0045] In addition, it should be noted that using words such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without further statement, the above words have no special meanings, so they cannot be understood as limiting the protection scope of the present utility model.

[0046] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A spot size adjusting mechanism, characterized in that Including: A mounting base (10), within which there is a mounting cavity (11). On opposite side walls of the mounting base (10), a first through hole (12) and a second through hole are respectively provided, and the first through hole (12) and the second through hole are coaxially arranged. A light spot adjusting assembly (20), which is installed in the mounting cavity (11). The light spot adjusting assembly (20) includes a first optical lens (21), a second optical lens (22), and a third optical lens (23) arranged in sequence along the direction from the first through hole (12) to the second through hole. Among them, the second optical lens (22) is fixedly installed on the mounting base (10), and the first optical lens (21) is movably arranged along the direction from the first through hole (12) to the second through hole to adjust the distance between the first optical lens (21) and the second optical lens (22), and the third optical lens (23) is movably arranged along the direction from the first through hole (12) to the second through hole to adjust the distance between the third optical lens (23) and the second optical lens (22).

2. The spot size adjusting mechanism according to claim 1, wherein The light spot size adjusting mechanism includes a driving assembly, and the driving assembly is arranged inside the mounting base (10) for driving the first optical lens (21) and the third optical lens (23) to move.

3. The spot size adjusting mechanism according to claim 2, wherein The driving assembly includes: A guide rail component (31), on which the movable first optical lens (21) and the second optical lens (22) are provided. A driving component (32), which is fixedly arranged on the mounting base (10) to drive the first optical lens (21) and the third optical lens (23) to move along the guide rail component (31).

4. The spot size adjusting mechanism according to claim 3, wherein The guide rail component (31) includes: A first guide rail (311), which is arranged on the first side wall surface (111) of the mounting cavity (11). The first guide rail (311) extends along the direction from the first through hole (12) to the second through hole, and the first optical lens (21) is movably arranged on the first guide rail (311) through a first slider (33). A second guide rail (312), which is arranged on the second side wall surface (112) of the mounting cavity (11) opposite to the first side wall surface (111). The second guide rail (312) extends along the direction from the first through hole (12) to the second through hole, and the second optical lens (22) is movably arranged on the second guide rail (312) through a second slider (34).

5. The spot size adjusting mechanism according to claim 4, characterized in that, The driving component (32) includes: A first driving motor (321), which is fixed in the mounting cavity (11) and is drivingly connected to the first slider (33). A second driving motor (322), which is fixed in the mounting cavity (11) and is drivingly connected to the second slider (34).

6. The spot size adjusting mechanism according to claim 5, characterized in that, Both the first drive motor (321) and the second drive motor (322) are magnetic levitation motors.

7. The spot size adjusting mechanism according to any one of claims 1 to 6, characterized in that, The first optical lens (21), the second optical lens (22), and the third optical lens (23) are all circular lenses, and the first through hole (12), the second through hole, and the circular lenses are coaxially arranged.

8. The spot size adjusting mechanism according to any one of claims 1 to 6, characterized in that, The mounting base (10) includes a cuboid, and the cuboid has a length of 65 mm to 75 mm, a width of 55 mm to 65 mm, and a height of 55 mm to 65 mm.

9. A machine tool, characterized in that, The machine tool includes the spot size adjusting mechanism according to any one of claims 1 to 8.

10. The machine tool according to claim 9, characterized in that, The machine tool includes a laser welding machine tool.

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