Grinding machine for machining arc guide rail

Abstract

The utility model relates to a grinding machine for machining an arc guide rail. The grinding machine comprises a grinding machine body, an X-axis moving mechanism, a Y-axis moving mechanism, a workbench, a rotary sliding table, a stand column, a Z-axis moving mechanism, an internal and external grinding assembly and a V-shaped groove grinding assembly. According to the grinding machine for machining the arc-shaped guide rail, due to the arrangement of the rotary sliding table, traditional linear motion of a workpiece is changed into arc-shaped motion, and therefore grinding of the arc-shaped guide rail is achieved, and ideal arc-shaped face machining is achieved; through the arrangement of the inner and outer circle grinding assembly and the V-shaped groove grinding assembly, the smoothness of the inner and outer circles of the workpiece and the inclined surface of the V-shaped groove is improved; the XY double-axis moving mechanism adopts high-precision servo control, so that a workpiece can be accurately moved in place, inner and outer circles and a V-shaped groove can be simultaneously ground and formed through one-time clamping, the concentricity consistency of an arc-shaped guide rail and the inner and outer circles is ensured, and meanwhile, the smoothness and concentricity of a product can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding machines, in particular to a grinding machine used for machining circular arc guide rails. Background Art

[0002] Internal and external machining is a common process in product manufacturing. Certain machined components require precise finish and position on the inner wall. External dimensions, such as the outer diameter of a rod or component, are typically easier to machine, and grinding machines can effectively ensure dimensional accuracy.

[0003] Grinding machines are divided into external cylindrical grinders, internal cylindrical grinders, coordinate grinders, surface grinders, etc. Arc grinders are a type of external cylindrical grinder or cylindrical grinder. They mainly use high-speed rotating grinding wheels to grind workpieces to achieve the required curvature.

[0004] However, the arc rails currently on the market are processed using grinders, which generally require multiple clamping and grinding cycles before they can be formed. The products processed in this way are inconsistent inside and outside and are not concentric with the 90° arc surface. The smoothness of movement is also poor, resulting in inconsistent quality of the arc rails and low efficiency. Utility Model Content

[0005] To this end, the technical problem to be solved by the present invention is to overcome the certain instability in the fixing process of the clamping mechanism of the grinder in the prior art, which easily causes grinding errors, resulting in low grinding accuracy. In addition, during the grinding process of the arc track, it is necessary to change the grinding angle and grinding track many times, which is not only cumbersome to operate, but also prone to errors when making multiple changes, thereby indirectly reducing the grinding efficiency.

[0006] In order to solve the above technical problems, the utility model provides a grinding machine for processing circular arc guide rails, comprising: a grinding machine bed; an X-axis moving mechanism, which is arranged on the grinding machine bed; a Y-axis moving mechanism, which is arranged on the X-axis moving mechanism, and the Y-axis moving mechanism and the X-axis moving mechanism constitute a dual-axis moving system; a worktable, which is arranged on the Y-axis moving mechanism; a rotating slide, which is fixedly arranged on the worktable, and a rotating disk is provided on the rotating slide, and the rotating disk is used to clamp the workpiece to be processed; a column, which is fixedly arranged on the grinding machine bed; a Z-axis moving mechanism, which is arranged on the column; an inner and outer cylindrical grinding assembly, which is arranged on the Z-axis moving mechanism, and the inner and outer cylindrical grinding assembly is used for grinding the workpiece to be processed on the rotating disk; a V-groove grinding assembly, which is arranged on the Z-axis moving mechanism, and the V-groove grinding assembly is used for grinding the V-groove of the workpiece to be processed on the rotating disk.

[0007] In one embodiment of the present utility model, the X-axis moving mechanism includes an X-axis motor mounting bracket, an X-axis drive motor, an X-axis screw and an X-axis moving plate, the X-axis motor mounting bracket is fixedly mounted on the grinding machine bed, the X-axis drive motor is arranged on the X-axis motor mounting bracket, and the X-axis drive motor and the X-axis screw are connected, the X-axis moving plate and the screw nut of the X-axis screw are connected, and the X-axis moving plate and the grinding machine bed are slidingly connected, and the Y-axis moving mechanism is arranged on the X-axis moving plate.

[0008] In one embodiment of the present invention, two parallel and symmetrically arranged X-axis guide rails are provided on the grinding machine bed, an X-axis slider is connected to the X-axis movable plate, and the X-axis slider is slidably connected to the X-axis guide rails.

[0009] In one embodiment of the present utility model, the Y-axis moving mechanism includes a Y-axis motor mounting frame, a Y-axis drive motor, a Y-axis screw and a Y-axis moving plate, the Y-axis motor mounting frame is fixedly set on the X-axis moving plate, the Y-axis drive motor is fixedly set on the Y-axis motor mounting frame, and the Y-axis drive motor and the Y-axis screw are connected, the Y-axis moving plate and the screw nut of the Y-axis screw are fixedly connected, and the workbench is fixedly set on the Y-axis moving plate.

[0010] In one embodiment of the present invention, a cross roller guide is provided between the Y-axis moving plate and the X-axis moving plate, and the Y-axis moving plate is slidingly connected to the X-axis moving plate through the cross roller guide.

[0011] In one embodiment of the present invention, the Z-axis moving mechanism includes a Z-axis motor mounting bracket, a Z-axis drive motor, a Z-axis screw and a Z-axis moving plate. The Z-axis motor mounting bracket is fixedly set on the column, the Z-axis drive motor is installed on the Z-axis motor mounting bracket, and the Z-axis drive motor and the Z-axis screw are connected. The Z-axis moving plate and the screw nut of the Z-axis screw are fixedly connected, and the inner and outer cylindrical grinding components and the V-groove grinding components are both arranged on the Z-axis moving plate.

[0012] In one embodiment of the present invention, two parallel and symmetrically arranged Z-axis guide rails are provided on the column, a Z-axis slider is connected to the Z-axis movable plate, and the Z-axis slider is slidably connected to the Z-axis guide rails.

[0013] In one embodiment of the present invention, the internal and external cylindrical grinding assembly includes an internal and external cylindrical grinding motor, a motor mounting seat 1 and an internal and external cylindrical grinding head. The motor mounting seat 1 is fixedly set on the Z-axis movable plate, the internal and external cylindrical grinding motor is set on the motor mounting seat 1, and the rotating shaft of the internal and external cylindrical grinding motor is connected to the internal and external cylindrical grinding head. The internal and external cylindrical grinding head is used for grinding the workpiece to be processed on the rotating disk, and the axial direction of the internal and external cylindrical grinding head is perpendicular to the circular cross-section of the rotating disk.

[0014] In one embodiment of the present invention, the V-groove grinding assembly includes a grinding head angle adjustment assembly, a motor mounting seat 2, a V-groove grinding motor and a V-groove grinding head, the grinding head angle adjustment assembly is arranged on the Z-axis movable plate, the motor mounting seat 2 is arranged on the grinding head angle adjustment assembly, the V-groove grinding motor is installed on the motor mounting seat 2, and the rotating shaft of the V-groove grinding motor is connected to the V-groove grinding head, and the V-groove grinding head is used for grinding the V-groove of the workpiece to be processed on the rotating disk.

[0015] In one embodiment of the present invention, the grinding head angle adjustment assembly includes a guide plate, a fixed bracket, an L-connecting plate, a rotating shaft 1, a pull rod, a support column, a locking nut, an angle adjustment plate and a central rotating shaft. The guide plate and the fixed bracket are fixedly connected to the Z-axis movable plate. The angle adjustment plate is connected to the guide plate through the central rotating shaft. An arc-shaped guide groove is provided on the guide plate. The central rotating shaft is located at the rotation center position of the arc-shaped guide groove. A guide slider is connected to the angle adjustment plate. The guide slider is placed in the arc-shaped guide groove, and the guide slider can slide along the arc-shaped guide groove. The motor mounting seat 2 is fixedly set on the angle adjustment plate. The L-connecting plate is connected to the angle adjustment plate. One end of the pull rod is connected to the L-connecting plate through the rotating shaft 1, and the other end of the pull rod passes through the support column. The locking nut is used to limit one end of the pull rod on the support column.

[0016] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0017] The grinding machine for processing circular arc guide rails described in the utility model changes the traditional linear motion of the workpiece into arc motion by means of the provided rotating slide, thereby realizing the grinding of the circular arc guide rail, thereby achieving ideal arc surface processing; the arrangement of the inner and outer circle grinding assembly and the V-groove grinding assembly improves the smoothness of the inner and outer circles of the workpiece and the inclined surface of the V-groove; the XY double-axis moving mechanism adopts high-precision servo control, which can realize the accurate movement of the workpiece into position, thereby achieving the simultaneous grinding and forming of the inner and outer circles and the V-groove by clamping in one time, so as to ensure the consistency of the concentricity of the circular arc guide rail and the inner and outer circles, and at the same time greatly improve the smoothness and concentricity of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0019] Figure 1 This is a schematic diagram of the overall structure of a grinding machine for machining arc guide rails in a preferred embodiment of the present utility model;

[0020] Figure 2This is a structural diagram of the X-axis moving mechanism in a preferred embodiment of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the Y-axis moving mechanism in a preferred embodiment of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the Z-axis moving mechanism in a preferred embodiment of the present utility model;

[0023] Figure 5 The structure diagram of the V-groove grinding assembly in the preferred embodiment of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 6 The structure diagram of the V-groove grinding assembly in the preferred embodiment of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 7 This is a schematic structural diagram of a workpiece to be ground in a preferred embodiment of the present invention.

[0026] Description of the accompanying drawings: Grinding machine bed 1, X-axis guide rail 11, X-axis moving mechanism 2, X-axis motor mounting bracket 21, X-axis drive motor 22, X-axis screw rod 23, X-axis moving plate 24, X-axis slider 241, cross roller guide rail 242, Y-axis moving mechanism 3, Y-axis motor mounting bracket 31, Y-axis drive motor 32, Y-axis screw rod 33, Y-axis moving plate 34, worktable 4, rotary slide 5, column 6, Z-axis guide rail 61, Z-axis moving mechanism 7, Z-axis motor mounting bracket 71, Z-axis drive motor 72, Z-axis screw rod 73, Z-axis moving Plate 74, Z-axis slider 741, inner and outer cylindrical grinding assembly 8, inner and outer cylindrical grinding motor 81, motor mounting seat 1 82, inner and outer cylindrical grinding head 83, V-groove grinding assembly 9, grinding head angle adjustment assembly 91, guide plate 911, fixed bracket 912, L connecting plate 913, rotating shaft 1 914, pull rod 915, support column 916, locking nut 917, angle adjustment plate 918, center rotating shaft 919, arc guide groove 9110, guide slider 9111, motor mounting seat 2 92, V-groove grinding motor 93, V-groove grinding head 94. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0028] Reference Figure 1As shown, the grinding machine for processing circular arc guide rails of the present invention includes: a grinding machine bed 1, an X-axis moving mechanism 2, a Y-axis moving mechanism 3, a worktable 4, a rotary slide 5, a column 6, a Z-axis moving mechanism 7, an internal and external cylindrical grinding assembly 8 and a V-groove grinding assembly 9; the X-axis moving mechanism 2 is arranged on the grinding machine bed 1; the Y-axis moving mechanism 3 is arranged on the X-axis moving mechanism 2, and the Y-axis moving mechanism 3 and the X-axis moving mechanism 2 constitute a dual-axis moving system; the worktable 4 is arranged on the Y-axis moving mechanism 3; the rotary slide 5, It is fixedly set on the workbench 4, and a rotating disk 51 is provided on the rotating slide 5, and the rotating disk 51 is used to clamp the workpiece to be processed; the column 6 is fixedly set on the grinding machine bed 1; the Z-axis moving mechanism 7 is set on the column 6; the inner and outer cylindrical grinding assembly 8 is set on the Z-axis moving mechanism 7, and the inner and outer cylindrical grinding assembly 8 is used for grinding the workpiece to be processed on the rotating disk 51; the V-groove grinding assembly 9 is set on the Z-axis moving mechanism 7, and the V-groove grinding assembly 9 is used for grinding the V-groove of the workpiece to be processed on the rotating disk 51.

[0029] Reference Figure 2 As shown, the X-axis moving mechanism 2 includes an X-axis motor mounting frame 21, an X-axis drive motor 22, an X-axis screw 23, and an X-axis moving plate 24. The X-axis motor mounting frame 21 is fixedly mounted on the grinding machine bed 1. The X-axis drive motor 22 is mounted on the X-axis motor mounting frame 21, and the X-axis drive motor 22 is connected to the X-axis screw 23. The X-axis moving plate 24 is connected to the screw nut of the X-axis screw 23, and the X-axis moving plate 24 is slidably connected to the grinding machine bed 1. The Y-axis moving mechanism 3 is mounted on the X-axis moving plate 24. Two parallel and symmetrically arranged X-axis guide rails 11 are provided on the grinding machine bed 1. An X-axis slider 241 is connected to the X-axis moving plate 24, and the X-axis slider 241 is slidably connected to the X-axis guide rails 11. The X-axis guide rails 11 are arranged parallel to the X-axis screw 23.

[0030] Reference Figure 3 As shown, the Y-axis moving mechanism 3 includes a Y-axis motor mounting frame 31, a Y-axis drive motor 32, a Y-axis screw 33 and a Y-axis moving plate 34. The Y-axis motor mounting frame 31 is fixedly mounted on the X-axis moving plate 24, the Y-axis drive motor 32 is fixedly mounted on the Y-axis motor mounting frame 31, and the Y-axis drive motor 32 is connected to the Y-axis screw 33. The screw nut of the Y-axis moving plate 34 and the Y-axis screw 33 is fixedly connected, and the workbench 4 is fixedly mounted on the Y-axis moving plate 34. A cross roller guide 242 is provided between the Y-axis moving plate 34 and the X-axis moving plate 24. The Y-axis moving plate 34 is slidably connected to the X-axis moving plate 24 via the cross roller guide 242. The cross roller guide 242 and the Y-axis screw 33 are arranged in parallel.

[0031] Reference Figure 4As shown, the Z-axis moving mechanism 7 includes a Z-axis motor mounting frame 71, a Z-axis drive motor 72, a Z-axis screw 73, and a Z-axis moving plate 74. The Z-axis motor mounting frame 71 is fixedly mounted on the column 6. The Z-axis drive motor 72 is mounted on the Z-axis motor mounting frame 71, and the Z-axis drive motor 72 is connected to the Z-axis screw 73. The Z-axis moving plate 74 is fixedly connected to the screw nut of the Z-axis screw 73. The inner and outer cylindrical grinding assembly 8 and the V-groove grinding assembly 9 are both arranged on the Z-axis moving plate 74. Two parallel and symmetrically arranged Z-axis guide rails 61 are provided on the column 6. A Z-axis slider 741 is connected to the Z-axis moving plate 74. The Z-axis slider 741 is slidably connected to the Z-axis guide rails 61. The Z-axis guide rails 61 and the Z-axis screw 73 are arranged in parallel.

[0032] Reference Figure 4 As shown, the internal and external cylindrical grinding assembly 8 includes an internal and external cylindrical grinding motor 81, a motor mounting seat 82 and an internal and external cylindrical grinding head 83. The motor mounting seat 82 is fixedly set on the Z-axis moving plate 74. The internal and external cylindrical grinding motor 81 is set on the motor mounting seat 82, and the rotating shaft of the internal and external cylindrical grinding motor 81 is connected to the internal and external cylindrical grinding head 83. The internal and external cylindrical grinding head 83 is used for grinding the workpiece to be processed on the rotating disk 51. The axial direction of the internal and external cylindrical grinding head 83 is perpendicular to the circular cross-section of the rotating disk 51.

[0033] Reference Figure 5 、 6 As shown, the V-groove grinding assembly 9 includes a grinding head angle adjustment assembly 91, a motor mounting seat 2 92, a V-groove grinding motor 93 and a V-groove grinding head 94. The grinding head angle adjustment assembly 91 is arranged on the Z-axis moving plate 74, the motor mounting seat 2 92 is arranged on the grinding head angle adjustment assembly 91, the V-groove grinding motor 93 is installed on the motor mounting seat 2 92, and the rotating shaft of the V-groove grinding motor 93 is connected to the V-groove grinding head 94. The V-groove grinding head 94 is used for grinding the V-groove of the workpiece to be processed on the rotating disk 51.

[0034] In the above structure, the grinding head angle adjustment assembly 91 includes a guide plate 911, a fixed bracket 912, an L connecting plate 913, a rotating shaft 914, a pull rod 915, a support column 916, a locking nut 917, an angle adjustment plate 918 and a central rotating shaft 919. The guide plate 911 and the fixed bracket 912 are fixedly connected to the Z-axis moving plate 74. The angle adjustment plate 918 is connected to the guide plate 911 through the central rotating shaft 919. The guide plate 911 is provided with an arc guide groove 9110. The central rotating shaft 919 is located at the rotation center position of the arc guide groove 9110. The angle adjustment plate 918 is connected to a guide slider 9111, which is placed in the arcuate guide groove 9110 and can slide along the arcuate guide groove 9110. The motor mounting seat 2 92 is fixedly mounted on the angle adjustment plate 918. The L-shaped connecting plate 913 is connected to the angle adjustment plate 918. One end of the pull rod 915 is connected to the L-shaped connecting plate 913 via the rotating shaft 1 914, and the other end of the pull rod 915 passes through the support column 916. The locking nut 917 is used to restrict one end of the pull rod 915 to the support column 916. The arcuate guide groove 9110 is a T-shaped slot, which can confine the guide slider 9111 within the arcuate guide groove 9110.

[0035] By adjusting the relative positions of the pull rod 915 and the support column 916, the angle adjustment plate 918 is pulled to rotate around the central axis 919. At this time, the guide slider 9111 slides along the arc guide groove 9110, thereby adjusting the angle adjustment plate 918 to a suitable angle, so that the V-groove grinding head 94 can match the workpiece to be ground.

[0036] The workpiece to be processed in the present invention is as follows Figure 7 As shown, A and B are the inner and outer circles respectively, and the two arc surfaces need to be ground by the inner and outer circle grinding assembly 8. In addition, the C position is the V-groove structure on the workpiece. Since the V-groove has two opposite inclined surfaces, the inner and outer circle grinding assembly 8 cannot be used to grind the inclined surfaces. At this time, the V-groove grinding assembly 9 is needed. By adjusting the angle of the angle adjustment plate 918, the center line of the V-groove grinding head 94 can be set parallel to the inclined surface, which is convenient for the V-groove grinding head 94 to perform grinding.

[0037] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A grinding machine for machining circular arc guide rails, characterized in that: include, Grinding machine bed; An X-axis moving mechanism is provided on the grinding machine bed; A Y-axis moving mechanism is provided on the X-axis moving mechanism, and the Y-axis moving mechanism and the X-axis moving mechanism constitute a dual-axis moving system; A workbench, which is arranged on the Y-axis moving mechanism; A rotary slide is fixedly mounted on the workbench and is provided with a rotary disk for clamping the workpiece to be processed; A column fixedly arranged on the grinding machine bed; A Z-axis moving mechanism, which is arranged on the column; An internal and external cylindrical grinding assembly is provided on the Z-axis moving mechanism and is used for grinding the workpiece to be processed on the rotating disk; The V-groove grinding assembly is arranged on a Z-axis moving mechanism and is used for grinding the V-groove of a workpiece to be processed on a rotating disk.

2. The grinding machine for machining circular arc guide rails according to claim 1, characterized in that: The X-axis moving mechanism includes an X-axis motor mounting bracket, an X-axis drive motor, an X-axis screw and an X-axis moving plate. The X-axis motor mounting bracket is fixedly arranged on the grinding machine bed. The X-axis drive motor is arranged on the X-axis motor mounting bracket, and the X-axis drive motor is connected to the X-axis screw. The X-axis moving plate is connected to the screw nut of the X-axis screw, and the X-axis moving plate is slidably connected to the grinding machine bed. The Y-axis moving mechanism is arranged on the X-axis moving plate.

3. The grinding machine for machining arc guide rails according to claim 2, characterized in that: The grinding machine bed is provided with two parallel and symmetrically arranged X-axis guide rails, the X-axis movable plate is connected with an X-axis slider, and the X-axis slider is slidably connected to the X-axis guide rails.

4. The grinding machine for machining circular arc guide rails according to claim 2, characterized in that: The Y-axis moving mechanism includes a Y-axis motor mounting frame, a Y-axis drive motor, a Y-axis screw and a Y-axis moving plate. The Y-axis motor mounting frame is fixedly set on the X-axis moving plate, the Y-axis drive motor is fixedly set on the Y-axis motor mounting frame, and the Y-axis drive motor and the Y-axis screw are connected. The Y-axis moving plate and the screw nut of the Y-axis screw are fixedly connected, and the workbench is fixedly set on the Y-axis moving plate.

5. The grinding machine for machining circular arc guide rails according to claim 4, characterized in that: A cross roller guide is provided between the Y-axis moving plate and the X-axis moving plate, and the Y-axis moving plate is slidably connected to the X-axis moving plate through the cross roller guide.

6. The grinding machine for machining circular arc guide rails according to claim 1, characterized in that: The Z-axis moving mechanism includes a Z-axis motor mounting frame, a Z-axis drive motor, a Z-axis screw and a Z-axis moving plate. The Z-axis motor mounting frame is fixedly set on the column, the Z-axis drive motor is installed on the Z-axis motor mounting frame, and the Z-axis drive motor and the Z-axis screw are connected. The Z-axis moving plate and the screw nut of the Z-axis screw are fixedly connected, and the inner and outer circle grinding components and the V-groove grinding components are both arranged on the Z-axis moving plate.

7. The grinding machine for machining circular arc guide rails according to claim 6, characterized in that: The column is provided with two parallel and symmetrically arranged Z-axis guide rails, the Z-axis movable plate is connected with a Z-axis slider, and the Z-axis slider is slidably connected to the Z-axis guide rails.

8. The grinding machine for machining circular arc guide rails according to claim 1, characterized in that: The internal and external cylindrical grinding assembly includes an internal and external cylindrical grinding motor, a motor mounting seat 1 and an internal and external cylindrical grinding head. The motor mounting seat 1 is fixedly arranged on the Z-axis movable plate. The internal and external cylindrical grinding motor is arranged on the motor mounting seat 1, and the rotating shaft of the internal and external cylindrical grinding motor is connected to the internal and external cylindrical grinding head. The internal and external cylindrical grinding head is used for grinding the workpiece to be processed on the rotating disk. The axial direction of the internal and external cylindrical grinding head is perpendicular to the circular cross-section of the rotating disk.

9. The grinding machine for machining circular arc guide rails according to claim 1 or 8, characterized in that: The V-groove grinding assembly includes a grinding head angle adjustment assembly, a second motor mounting seat, a V-groove grinding motor and a V-groove grinding head. The grinding head angle adjustment assembly is arranged on the Z-axis movable plate, the second motor mounting seat is arranged on the grinding head angle adjustment assembly, the V-groove grinding motor is installed on the second motor mounting seat, and the rotating shaft of the V-groove grinding motor is connected to the V-groove grinding head. The V-groove grinding head is used for grinding the V-groove of the workpiece to be processed on the rotating disk.

10. The grinding machine for machining arc guide rails according to claim 9, characterized in that: The grinding head angle adjustment assembly includes a guide plate, a fixed bracket, an L-connecting plate, a rotating shaft 1, a pull rod, a support column, a locking nut, an angle adjustment plate and a center rotating shaft. The guide plate and the fixed bracket are fixedly connected to the Z-axis movable plate. The angle adjustment plate is connected to the guide plate through the center rotating shaft. An arc guide groove is provided on the guide plate. The center rotating shaft is located at the rotation center position of the arc guide groove. A guide slider is connected to the angle adjustment plate. The guide slider is placed in the arc guide groove, and the guide slider can slide along the arc guide groove. The motor mounting seat 2 is fixedly set on the angle adjustment plate. The L-connecting plate is connected to the angle adjustment plate. One end of the pull rod is connected to the L-connecting plate through the rotating shaft 1, and the other end of the pull rod passes through the support column. The locking nut is used to limit one end of the pull rod to the support column.

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