A hollow rotary laser cutting system

Abstract

This utility model discloses a hollow rotary cutting laser processing system, which includes: a dual-reflector assembly for receiving and controlling the propagation of light, the dual-reflector assembly including a first mirror and a second mirror; a rotating assembly for receiving the light emitted from the dual-reflector assembly and rotating the light at double speed; and a focusing assembly for receiving the light emitted from the rotating assembly and focusing the light onto a preset working surface. This utility model, through the first and second mirrors in the dual-reflector assembly, can achieve effects such as vertical translation, tilting, or translation plus tilting of the light, thus meeting the needs of collaborative processing. It allows the light trajectory to change during processing, thereby optimizing the drilling effect, reducing dependence on the laser, and improving the overall laser processing effect of the hollow rotary cutting laser processing system.

Description

Technical Field

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

[0002] Hollow rotary cutting systems are a technology combining laser processing and multi-axis motion control, primarily used for machining high-precision, complex-structured hollow components. Current hollow rotary cutting systems mainly consist of a translation component, a wedge mirror, a Dove prism, and a focusing lens, forming the Dove prism hollow rotary cutting system. In this system, light rays are paralleled by the translation component, then tilted by the wedge mirror. Based on the unique optical path properties of the Dove prism, the light rays rotate around the axis at twice the speed. The focusing lens then focuses the light rays. By combining the parallel displacement, tilting, and rotation around the axis, the light rays are focused onto circular trajectories of different radii at different angles.

[0003] However, in actual machining, during rotary cutting and drilling, the translation component remains fixed after its parameters are adjusted for a specific task. Even with linkage, the speeds of the linear motor driving the translation component and the step motor rotating the wedge mirror are difficult to match with the rotation of the hollow motor carrying the Dove prism. This results in a fixed machining trajectory, especially for deep holes, where the machining hole can only be machined based on the depth of field of the laser beam. Consequently, the final machining result is highly dependent on the optical system design and laser performance. Furthermore, in existing hollow rotary cutting systems, the use of a wedge mirror for compensation, which only oscillates around the X-axis for correction, only compensates for deviations in one direction of the Dove prism axis. This leaves other directions uncompensated, leading to a larger minimum radius for the machined hole and making it impossible to machine small-diameter holes. Utility Model Content

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

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

[0006] A dual-reflector assembly for receiving light and controlling the propagation of the light, the dual-reflector assembly including a first reflector and a second reflector;

[0007] A rotating component is used to receive the light emitted from the dual-reflector assembly and to rotate the light at a double speed.

[0008] A focusing component is used to receive the light emitted from the rotating component and focus the light onto a preset working surface.

[0009] Furthermore, the rotating assembly includes a rotating unit and a compensation unit arranged sequentially along the optical path propagation direction.

[0010] Furthermore, the rotating unit includes a Dove prism.

[0011] Furthermore, the compensation unit includes a translation compensation unit and a tilt compensation unit.

[0012] Furthermore, the translation compensation unit includes a first flat glass and a second flat glass. The first flat glass is arranged around the X-axis to perform translation compensation on the light in the X-axis direction, and the second flat glass is arranged around the Y-axis to perform translation compensation on the light in the Y-axis direction.

[0013] Furthermore, the tilt compensation unit includes a first wedge mirror and a second wedge mirror, both of which can rotate around the Z-axis and perform tilt compensation on the light rays in the X-axis and Y-axis directions based on the combined effect.

[0014] Furthermore, a fixed reflector is provided between the rotating component and the focusing component.

[0015] Furthermore, the translation compensation unit and the tilt compensation unit are disposed between the Daowei prism and the fixed reflector, and the order of the translation compensation unit and the tilt compensation unit can be arbitrarily arranged.

[0016] Furthermore, the Daowei prism is installed in the rotor of the hollow motor, and the compensation unit is fixedly arranged relative to the rotor of the hollow motor.

[0017] Furthermore, the focusing component is provided with at least one focusing lens.

[0018] This utility model provides a hollow rotary cutting laser processing system, comprising: a dual-reflector assembly for receiving and controlling the propagation of light, the dual-reflector assembly including a first mirror and a second mirror; a rotating assembly for receiving the light emitted from the dual-reflector assembly and rotating the light at double speed; and a focusing assembly for receiving the light emitted from the rotating assembly and focusing the light onto a preset working surface. This utility model, through the first and second mirrors in the dual-reflector assembly, can achieve effects such as vertical translation, tilting, or translation plus tilting of the light, thus meeting the needs of collaborative processing. It allows the light trajectory to change during processing, thereby optimizing the drilling effect, reducing dependence on the laser, and improving the overall laser processing effect of the hollow rotary cutting laser processing system. Attached Figure Description

[0019] 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.

[0020] Figure 1 A schematic diagram of a hollow rotary cutting laser processing system provided for an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the existing technology.

[0022] Figure 3 A first working schematic diagram of a tilt compensation unit in a hollow rotary laser processing system provided for an embodiment of this utility model;

[0023] Figure 4 This is a second working schematic diagram of a tilt compensation unit in a hollow rotary laser processing system provided for an embodiment of the present invention. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Please see below. Figure 1 The present invention provides a hollow rotary cutting laser processing system, comprising:

[0029] The dual-reflector assembly 10 is used to receive light and control the propagation of the light. The dual-reflector assembly 10 includes a first reflector 101 and a second reflector 102.

[0030] The rotating component 20 is used to receive the light emitted from the dual-reflection component 10 and rotate the light at a double speed.

[0031] The focusing component 30 is used to receive the light emitted from the rotating component 20 and focus the light onto a preset working surface.

[0032] In this embodiment, the hollow rotary laser processing system includes a dual-reflector assembly 10, a rotating assembly 20, and a focusing assembly 30. The dual-reflector assembly 10 consists of a first reflector 101 and a second reflector 102, used to receive and control the propagation of light. The rotating assembly 20 receives the light from the dual-reflector assembly 10 and rotates at double speed. The focusing assembly 30 receives the light from the rotating assembly 20 and focuses it onto a preset working surface.

[0033] In this embodiment, the first reflector 101 and the second reflector 102 in the dual-reflector assembly 10 can achieve effects such as vertical translation, tilting, or translation plus tilting of light, which can meet the needs of collaborative processing. During processing, the light trajectory can be changed, which is conducive to optimizing the drilling effect, reducing the dependence on the laser, and thus improving the overall laser processing effect of the hollow rotary cutting laser processing system.

[0034] In practical applications, the first reflector 101 and the second reflector 102 can be controlled by the same control card, and the control card can control the first reflector 101 and the second reflector 102 to swing in coordination at different angles to achieve effects such as vertical translation and tilting of light.

[0035] In one embodiment, the rotating assembly 20 includes a rotating unit and a compensation unit arranged sequentially along the optical path propagation direction.

[0036] Specifically, the rotating unit includes the Dowell prism 201.

[0037] In addition, the compensation unit includes a translation compensation unit and a tilt compensation unit.

[0038] The translation compensation unit includes a first flat glass 202 and a second flat glass 203. The first flat glass 202 is arranged around the X-axis to perform translation compensation of light in the X-axis direction, and the second flat glass 203 is arranged around the Y-axis to perform translation compensation of light in the Y-axis direction.

[0039] The tilt compensation unit includes a first wedge mirror 204 and a second wedge mirror 205. Both the first wedge mirror 204 and the second wedge mirror 205 can rotate around the Z-axis and perform tilt compensation on the light in the X-axis and Y-axis directions based on the combined effect.

[0040] In this embodiment, after light enters the rotating component 20, due to the special optical path properties of the Daowei prism 201, the rotating component 20 rotates around the axis, causing the outgoing light to rotate around the axis at twice the speed. Here, due to factors such as the processing or installation of the Daowei prism 201, the light passing through the Daowei prism 201 in the initial state is prone to deviation from the rotation axis. By adjusting the first flat glass 202 and the second flat glass 203 around the X-axis and Y-axis respectively, the translational deviation along the X and Y directions can be compensated. At the same time, by rotating the first wedge mirror 204 and the second wedge mirror 205 around the Z-axis respectively, the tilt deviation along the X and Y directions can be compensated.

[0041] like Figure 2 As shown, in the existing technology, when the flat glass swings around an axis, it can only cause the outgoing light rays to move in parallel; when the wedge mirror swings around the axis shown in the figure, it can only undergo angular changes and certain positional changes in the direction of the axis shown in the figure. For example, when the swing axes of the flat glass and the wedge mirror are the same axis, then its correction value can only correct one axis.

[0042] This embodiment, based on translation compensation unit and tilt compensation unit, can fully compensate for the deviation of the beam in the initial state, so that the diameter of the machinable micro-hole can reach the theoretical value, thereby further improving the final laser processing effect.

[0043] For example, combining Figure 3 Keeping the first wedge mirror 204 (i.e., wedge mirror 1 in the figure) stationary, the second wedge mirror 205 (i.e., wedge mirror 2 in the figure) is rotated around the Z-axis by 0°, 90°, 180°, 270°, and 360° respectively. It can be seen that the tilt angle of the final emitted light rays changes significantly. Furthermore, combined with... Figure 4 The first wedge mirror 204 (i.e., wedge mirror 1 in the figure) and the second wedge mirror 205 (i.e., wedge mirror 2 in the figure) are rotated around the Z-axis at 0°, 90°, 180° and 270° at the same time. After the two wedge mirrors are combined and superimposed, the tilt angle of the emitted light will show different changes.

[0044] In one embodiment, a fixed reflector 40 is disposed between the rotating component 20 and the focusing component 30.

[0045] After passing through the rotating component 20, the light beam is incident on the fixed reflector 40, so that it is reflected by the fixed reflector 40 to the focusing component 30. For example, the fixed reflector 40 deflects the light beam by 90° and it is incident on the focusing component 30. The focusing component 30 will focus the light beam. In addition, the light beam will be focused at different angles and on circular trajectories of different radii due to the tilting and parallel displacement of the light beam and the rotation around the axis.

[0046] In a specific embodiment, the focusing component 30 is provided with at least one focusing lens. For example, two focusing lenses can be provided to ensure precise focusing of light and improve processing accuracy. Lens parameters can also be optimized to further refine beam control and achieve precise processing of more complex micropore structures.

[0047] In one embodiment, the translation compensation unit and the tilt compensation unit are disposed between the Daowei prism 201 and the fixed reflector 40, and the order of the translation compensation unit and the tilt compensation unit is arbitrary.

[0048] In practical applications, the order of the first flat glass 202 and the second flat glass 203 in the translation compensation unit, and the first wedge mirror 204 and the second wedge mirror 205 in the tilt compensation unit in the Z direction is not required. They only need to be between the Dowell prism 201 and the fixed reflector 40 to ensure that the light can be stably incident on the focusing lens along a predetermined path after precise compensation.

[0049] In one embodiment, the Daowei prism 201 is installed in the rotor of the hollow motor, and the compensation unit is fixedly disposed relative to the rotor of the hollow motor.

[0050] In this embodiment, the Daowei prism 201 is installed in the rotor of the hollow motor. After the compensation and adjustment of the first flat glass 202, the second flat glass 203, the first wedge mirror 204 and the second wedge mirror 205 are completed, they are fixed relative to the hollow motor rotor. In this way, when the hollow motor rotates, it can drive all the components of the rotating assembly 20 to rotate together, thereby ensuring that the light remains accurately compensated during the dynamic process.

[0051] In summary, the hollow rotary laser cutting system provided in this embodiment solves the problem in existing technologies where the translation and tilt angle changes of the translation component cannot be synchronized with the rotation of the hollow motor during rotary cutting and drilling, resulting in a fixed processing trajectory. Furthermore, this embodiment addresses the issue that existing technologies can only compensate for deviations in one direction when there is an axial deviation in the Daowei prism 201.

[0052] It should be noted that, in this embodiment, the distance between the two reflectors in the dual-reflection assembly 10 needs to be set according to the system parameter requirements. Simultaneously, while ensuring a small swing angle, the size of the mirrors should not be too large to ensure that the coordinated swing speed can match the speed of the hollow single-unit motor. Furthermore, in actual processing, the positions and spacing between the first flat glass 202, the second flat glass 203, the first wedge mirror 204, and the second wedge mirror 205 in the rotating assembly 20 need to be reasonably set, and the size of these four components should be kept as small as possible to reduce the risk of vibration in the hollow motor and facilitate the adjustment operation during the compensation process.

[0053] 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.

[0054] 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 hollow rotary cutting laser processing system, characterized in that, include: A dual-reflector assembly for receiving light and controlling the propagation of the light, the dual-reflector assembly including a first reflector and a second reflector; A rotating component is used to receive the light emitted from the dual-reflector assembly and to rotate the light at a double speed. A focusing component is used to receive the light emitted from the rotating component and focus the light onto a preset working surface.

2. The hollow rotary cutting laser processing system according to claim 1, characterized in that, The rotating assembly includes a rotating unit and a compensation unit arranged sequentially along the optical path propagation direction.

3. The hollow rotary cutting laser processing system according to claim 2, characterized in that, The rotating unit includes a Dove prism.

4. The hollow rotary cutting laser processing system according to claim 3, characterized in that, The compensation unit includes a translation compensation unit and a tilt compensation unit.

5. The hollow rotary cutting laser processing system according to claim 4, characterized in that, The translation compensation unit includes a first flat glass and a second flat glass. The first flat glass is arranged around the X-axis to compensate for the translation of light in the X-axis direction, and the second flat glass is arranged around the Y-axis to compensate for the translation of light in the Y-axis direction.

6. The hollow rotary cutting laser processing system according to claim 5, characterized in that, The tilt compensation unit includes a first wedge mirror and a second wedge mirror. Both the first and second wedge mirrors can rotate around the Z-axis and perform tilt compensation on the light rays in the X-axis and Y-axis directions based on the combined effect.

7. The hollow rotary cutting laser processing system according to claim 4, characterized in that, A fixed reflector is provided between the rotating component and the focusing component.

8. The hollow rotary cutting laser processing system according to claim 7, characterized in that, The translation compensation unit and the tilt compensation unit are disposed between the Daowei prism and the fixed reflector, and the order of the translation compensation unit and the tilt compensation unit can be arbitrarily arranged.

9. The hollow rotary cutting laser processing system according to claim 3, characterized in that, The Daowei prism is installed in the rotor of the hollow motor, and the compensation unit is fixedly set relative to the rotor of the hollow motor.

10. The hollow rotary cutting laser processing system according to claim 1, characterized in that, The focusing component is provided with at least one focusing lens.

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