Scanning galvanometer assembly

Abstract

The embodiment of the utility model provides a scanning galvanometer assembly, and relates to the technical field of laser scanning assemblies. Comprising a galvanometer piece and a servo motor, and the galvanometer piece is installed in a galvanometer installation groove of the servo motor; a fixing piece is arranged at the front end of the servo motor, a rotor is arranged in the servo motor, and a rotor shaft penetrates through and extends out of the fixing piece; a galvanometer mounting groove is formed in the top of the rotor shaft, and the groove wall of the front face of the galvanometer mounting groove is lower than the groove wall of the back face of the galvanometer mounting groove. According to the scanning galvanometer assembly, the slotting mode is improved at the position of the galvanometer mounting groove for mounting the galvanometer piece, and the groove wall on the back surface is higher than the front surface, so that the galvanometer piece can be mounted on the galvanometer mounting groove more firmly, the galvanometer piece is prevented from falling off or being staggered during high-speed rotation, equipment is prevented from being burnt out, the galvanometer is more stable during working, and the equipment quality is improved; and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of laser scanning components, in particular to a scanning galvanometer component. Background Art

[0002] A servo motor is a motor capable of precisely controlling its angle, speed, and position based on input control signals. It typically consists of a motor, a sensor, and a controller. The sensor monitors the motor's position or speed and provides feedback to the controller. Based on the sensor feedback and the input control signal, the controller adjusts the motor's output to achieve the desired angle, speed, or position. This precise control makes servo motors widely used in applications requiring high-precision positioning or motion control, such as robotics, CNC machine tools, and automated production lines.

[0003] Current scanning galvanometer mirror assemblies have a galvanometer mirror mounting slot directly on their shaft to facilitate the installation of the galvanometer lens. However, the walls on both sides of the existing galvanometer mirror mounting slot are of equal height. This structure can easily lead to the lens being mounted loosely and instability, especially during high-speed rotation, which can easily cause the galvanometer mirror to fall off or become misaligned, thereby damaging the equipment. Therefore, the present utility model provides a scanning galvanometer mirror assembly and scanning galvanometer mirror to at least partially address the problems that may exist in the existing technology. Utility Model Content

[0004] In view of the above problems, the present invention is proposed to provide a scanning galvanometer assembly that overcomes the above problems or at least partially solves the above problems.

[0005] In one embodiment of the present application, a scanning galvanometer assembly is disclosed, comprising:

[0006] A vibrating lens and a servo motor, wherein the vibrating lens is installed in a vibrating lens installation slot of the servo motor;

[0007] A servo motor having a fixing member at its front end, a rotor disposed therein, and a rotor shaft passing through and extending out of the fixing member;

[0008] A galvanometer mounting groove is provided on the top of the rotor shaft, wherein the front groove wall of the galvanometer mounting groove is lower than the back groove wall.

[0009] Optionally, the galvanometer assembly further includes a galvanometer housing, which is provided with an inlet hole and an outlet hole; the two galvanometer assemblies are vertically arranged in the galvanometer housing; wherein the laser source is arranged at the position of the inlet hole, forming a variable optical path from the laser source at the inlet hole, to one galvanometer lens, to the other galvanometer lens, and then to the outlet hole.

[0010] Optionally, a limiting groove is axially provided on the outer side of the rotor shaft; the fixing piece is provided with a limiting hole, and a limiting column is passed through the limiting hole, wherein the end of the limiting column is located in the positioning groove, and the maximum rotation angle of the rotor shaft is 5°-30°.

[0011] Optionally, the fixing member includes a sleeve shaft and a sleeve disc that are concentrically arranged; the sleeve disc is provided with a through hole, and the servo motor is provided with a screw hole corresponding to the through hole;

[0012] The rotor shaft passes through the center of the sleeve shaft and the sleeve disc and extends out of the sleeve disc;

[0013] The limiting hole is arranged on the side surface of the sleeve and faces the limiting groove.

[0014] Optionally, a groove is further provided at the position of the through hole of the sleeve.

[0015] Optionally, the servo motor has a connection circuit board at its end, an end cover at the outside of its end, a wire outlet hole at the bottom of the end cover, and a detachable bottom cover at the bottom of the end cover.

[0016] Optionally, a first shell and a second shell connected to each other are provided on the outside of the servo motor, wherein the second shell is located at the upper end of the first shell.

[0017] Optionally, the maximum rotation angle is 18°.

[0018] The utility model has the following advantages:

[0019] In an embodiment of the present invention, a vibrating mirror piece and a servo motor are used, wherein the vibrating mirror piece is mounted in the vibrating mirror mounting slot of the servo motor. The servo motor has a fixing member at its front end, in which a rotor is mounted, and the rotor shaft extends through and out of the fixing member. The top of the rotor shaft has a vibrating mirror mounting slot, wherein the front wall of the vibrating mirror mounting slot is lower than the back wall. Through the above-mentioned scanning vibrating mirror assembly, the slotting method of the vibrating mirror mounting slot for mounting the vibrating mirror piece is improved, so that the back wall is higher than the front wall, making the vibrating mirror piece more secure when mounted thereon. This prevents the vibrating mirror piece from falling off or misaligning during high-speed rotation, thereby burning the equipment. This makes the vibrating mirror more stable during operation, improves equipment quality, and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a schematic structural diagram of the main body of a scanning galvanometer assembly provided in one embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of a scanning galvanometer assembly provided in one embodiment of the present invention;

[0023] Figure 3 This is a schematic structural diagram of a servo motor assembly of a scanning galvanometer assembly provided in one embodiment of the present invention from a first perspective;

[0024] Figure 4 This is a schematic structural diagram of a servo motor assembly of a scanning galvanometer assembly provided in an embodiment of the present invention from a second perspective;

[0025] Figure 5 The figure is a schematic diagram of the exploded structure of a servo motor assembly of a scanning galvanometer assembly provided in one embodiment of the present invention.

[0026] In the figure: 1. Servo motor; 2. Fixing part; 3. End cover; 4. Rotor shaft; 5. Vibration mirror mounting slot; 6. Limiting slot; 7. Connecting circuit board; 8. Screw hole; 11. First housing; 12. Second housing; 21. Sleeve shaft; 22. Sleeve disc; 23. Limiting hole; 24. Through hole; 31. Bottom cover; 32. Wire outlet hole; 9. Vibration mirror piece. DETAILED DESCRIPTION

[0027] To make the objectives, features, and advantages of the present invention more readily apparent, the present invention is further described below in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] Reference Figures 1 to 5 , shows a scanning galvanometer mirror assembly provided by an embodiment of the present invention, which includes: a galvanometer lens 9 and a servo motor 1, the galvanometer lens 9 is installed in the galvanometer mirror mounting groove 5 of the servo motor 1; the servo motor 1, a fixing part 2 is provided at the front end thereof, a rotor is provided therein, and a rotor shaft 4 passes through and extends out of the fixing part 2; a galvanometer mirror mounting groove 5 is opened at the top of the rotor shaft 4, wherein the front groove wall of the galvanometer mirror mounting groove 5 is lower than the back groove wall.

[0029] Through the above-mentioned scanning galvanometer mirror assembly structure, the slotting method is improved at the position of the galvanometer mirror mounting slot 5 where the galvanometer mirror piece 9 is installed, so that the groove wall on the back is higher than the front, so that the galvanometer mirror piece can be installed more firmly thereon, and when rotating at high speed, the galvanometer mirror piece is prevented from falling off or being misplaced, thereby burning the equipment, making the galvanometer mirror more stable during operation. In addition, it also solves the problem that in the traditional case, a damaged galvanometer mirror assembly requires the entire servo motor 1 and galvanometer mirror piece 9 to be returned to the factory for replacement, which is inefficient and has high maintenance costs. Through the above-mentioned structure of the present application, the galvanometer mirror, as a fragile and aging component, can be replaced separately without replacing the entire servo motor, thereby reducing maintenance costs and improving repair efficiency.

[0030] The servo motor 1 of the present application can be intuitively distinguished from its front and back sides due to the different slotting methods, making it easier to identify the front and back sides during assembly. This avoids the need to correct the reverse installation of the servo motor 1 and the galvanometer lens 9 through program control after assembly is complete, thereby improving the efficiency of the rapid assembly of the galvanometer lens assembly. Since the galvanometer lens can be replaced individually, there is no need to replace the entire servo motor 1, which reduces maintenance costs. This can greatly reduce maintenance expenses and improve overall economic benefits for systems with long-term stable operation. In addition, during maintenance, the galvanometer lens only needs to be installed in the galvanometer lens mounting groove 5. Since the groove wall on the back is higher than the galvanometer lens mounting groove 5 on the front, the galvanometer lens can be installed more firmly thereon, preventing the galvanometer lens from falling off or misaligning during high-speed rotation.

[0031] It should be noted that although the front and back sides of the servo motor 1 can be calibrated through program control, when the galvanometer assembly is assembled into the housing, it is also necessary to consider whether there is enough space inside. Since the walls of the galvanometer mounting groove 5 of the existing servo motor 1 are of the same height and there is no installation reference, the problem of reverse installation is prone to occur. If there is insufficient space inside the equipment to enable it to be adjusted through software, manual correction must be made, which will greatly reduce production and assembly efficiency.

[0032] In one embodiment of the present application, a scanning galvanometer assembly is provided, wherein a limiting groove 6 is axially provided on the outer side of the rotor shaft 4; the fixing member 2 is provided with a limiting hole 23, and a limiting column is passed through the limiting hole 23, wherein the end of the limiting column is located in the positioning groove 6, and the maximum rotation angle of the rotor shaft 4 is 5°-30°.

[0033] By axially providing a limit groove 6 on the outer side of the above-mentioned rotor shaft 4 and passing a limit column through the limit hole 23, physical limiting is achieved to prevent the soft limit in the above-mentioned servo motor 1 from failing or the control program from erroneous, causing the rotor shaft 4 of the above-mentioned servo motor 1 to rotate at an excessive angle, resulting in the position of the vibrating lens 9 provided thereon being offset, causing the optical path to be incorrect, or even easily collided and damaged. Through physical limiting, physical limiting can still be performed after the above-mentioned soft limit fails, ensuring that it can work normally.

[0034] In one embodiment of the present application, refer to Figure 3 As shown, the fixing member 2 includes a concentrically arranged sleeve shaft 21 and a sleeve disc 22; a through hole 24 is provided on the sleeve disc 22, and the servo motor 1 is provided with a screw hole 8 corresponding to the through hole 24; the rotor shaft 4 passes through the center of the sleeve shaft 21 and the sleeve disc 22 and extends out of the outside of the sleeve disc 22; the limiting hole 23 is provided on the side of the sleeve disc 22 and faces the limiting slot 6; a groove is also provided at the position of the through hole 24 of the sleeve disc 22. During installation, the screw is passed through the above-mentioned through hole 24 and connected to the above-mentioned screw hole 8. After fixing, the nut of the above-mentioned screw is located in the above-mentioned groove. The above-mentioned sleeve shaft 21 can protect the part of the rotor shaft 4 protruding from the servo motor 1. Since the above-mentioned servo motor 1 is used for a galvanometer assembly, and the galvanometer assembly is used in a laser scene, once the rotor shaft 4 has a fault such as deformation, it will inevitably affect the optical path. The above-mentioned sleeve shaft 21 is used to sleeve the excessively long part of the rotor shaft 4 inside the above-mentioned sleeve shaft 21, thereby forming protection.

[0035] Reference Figure 3 and Figure 4 As shown, the servo motor 1 is provided with a connecting circuit board 7 at its end, and an end cover 3 is provided on the outside of the end. A wire outlet hole 32 is provided at the bottom of the end cover 3, and a detachable bottom cover 31 is provided at the bottom of the end cover 3. The end cover 3 and the bottom cover 31 are used to protect the tail end of the servo motor 1. The wire outlet hole facilitates the installation of the motor control power supply and control lines. When the bottom cover 31 is opened, the connection between the connecting circuit board 7 and the power supply and control lines inside can be checked for easy maintenance.

[0036] It should be noted that the servo motor is different from an ordinary motor in that it requires an external control unit to control the circuit inside it to control the forward or reverse rotation of the motor; the above-mentioned connecting circuit board 7 is provided with a circuit electrically connected to the external control unit, and provides driving current to the motor according to the external driving instruction.

[0037] The outer side of the servo motor 1 is provided with a first housing 11 and a second housing 12 connected to each other, wherein the second housing 12 is located at the upper end of the first housing 11. The housing is provided to protect the servo motor 1 and prevent damage to the body from external factors during transportation or storage.

[0038] The embodiment of the present utility model provides a scanning galvanometer mirror assembly, including a galvanometer lens 9 and a servo motor 1, wherein the galvanometer lens 9 is installed in the galvanometer mirror mounting slot 5 of the servo motor 1 by glue. During installation, it is only necessary to apply glue to the galvanometer mirror mounting slot 5 and insert the galvanometer lens into the galvanometer mirror mounting slot 5. Similarly, during replacement, the galvanometer lens 9 is removed from the galvanometer mirror mounting slot 5, and then a galvanometer lens of the same specification is installed in the same position using the above method. The installation and replacement are convenient, fast and efficient, and no overall equipment calibration is required. Only the position and specifications need to correspond. Since the servo motor 1 has a large output torque and can be precisely controlled.

[0039] In one embodiment of the present application, the galvanometer mirror assembly further comprises a galvanometer mirror housing, the galvanometer mirror housing being provided with an input aperture and an output aperture; the two galvanometer mirror assemblies are vertically disposed within the galvanometer mirror housing; wherein the laser source is disposed at the input aperture, forming a variable optical path from the laser source at the input aperture, to one galvanometer lens 9, to the other galvanometer lens 9, and finally to the output aperture. For example, the limit slot 6 on the rotor shaft 4 can be set to a maximum rotation angle of 18°. The two galvanometer mirror assemblies are within the galvanometer mirror housing, and corresponding lenses are disposed at the same output aperture, forming a two-dimensional laser scanning galvanometer mirror. The two assemblies form an X-axis and a Y-axis, which are limited to 18° and equipped with lenses of appropriate aperture, enabling a scanning diameter of up to 1m. That is, when used in a laser cutting or engraving device, the working range can reach 1m. For example, when engraving, it can engrave a target with a length of 1m.

[0040] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0041] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0042] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0043] The above is a detailed introduction to a scanning galvanometer assembly provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for general technical personnel in this field, based on the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A scanning galvanometer assembly, characterized in that: include: A vibrating lens and a servo motor, wherein the vibrating lens is installed in a vibrating lens installation slot of the servo motor; A servo motor having a fixing member at its front end, a rotor disposed therein, and a rotor shaft passing through and extending out of the fixing member; A galvanometer mounting groove is provided on the top of the rotor shaft, wherein the front groove wall of the galvanometer mounting groove is lower than the back groove wall.

2. The scanning galvanometer assembly according to claim 1, wherein: The galvanometer assembly also includes a galvanometer housing, which is provided with an input hole and an output hole; the two galvanometer assemblies are vertically arranged in the galvanometer housing; wherein the laser source is arranged at the position of the input hole, forming a variable optical path from the laser source at the input hole, to one galvanometer lens, to the other galvanometer lens, and then to the output hole.

3. The scanning galvanometer assembly according to claim 1, wherein: A limiting groove is axially provided on the outer side of the rotor shaft; the fixing piece is provided with a limiting hole, and a limiting column is passed through the limiting hole, wherein the end of the limiting column is located in the positioning groove, and the maximum rotation angle of the rotor shaft is 5°-30°.

4. The scanning galvanometer assembly according to claim 3, characterized in that: The fixing member includes a sleeve shaft and a sleeve disc arranged concentrically; the sleeve disc is provided with a through hole, and the servo motor is provided with a screw hole corresponding to the through hole; The rotor shaft passes through the center of the sleeve shaft and the sleeve disc and extends out of the sleeve disc; The limiting hole is arranged on the side surface of the sleeve and faces the limiting groove.

5. The scanning galvanometer assembly according to claim 4, characterized in that: A groove is further provided at the position of the through hole of the sleeve.

6. The scanning galvanometer assembly according to claim 1, characterized in that: The servo motor has a connection circuit board at its end, an end cover at the outside of its end, a wire outlet hole at the bottom of the end cover, and a detachable bottom cover at the bottom of the end cover.

7. The scanning galvanometer assembly according to claim 1, wherein: A first shell and a second shell connected to each other are provided on the outside of the servo motor, wherein the second shell is located at the upper end of the first shell.

8. The scanning galvanometer assembly according to claim 3, wherein: The maximum rotation angle is 18°.

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