Differential lead screw rigid-flexible coupling motion platform

Abstract

The utility model relates to the technical field of motion platforms, in particular to a differential screw rigid-flexible coupling motion platform. In order to solve the problems that although a rigid-flexible coupling motion platform can reduce friction and improve precision, a flexible hinge is easy to vibrate, and lead, driving precision and load capacity of ball screw driving in a motion platform driving mode are mutually restricted, the following technical scheme is provided: the rigid-flexible coupling motion platform comprises a base, and the base is arranged in a box shape with an opening in the top; the driving mechanism is mounted in the base; the synchronous plate, the positioning plate and the motor plate are arranged above the base; the adjusting assembly is installed below the synchronous plate, the positioning plate and the motor plate and used for finely adjusting the distance between the synchronous plate and the positioning plate, and the moving end of the driving mechanism is connected with the positioning plate. The application efficiency of the motion platform in industrial production and scientific research can be improved, the increasing requirements for high precision and high stability are met, and the motion platform has important practical significance and application value.

Description

TECHNICAL FIELD

[0001] The utility model relates to motion platform technical field especially relates to a differential screw rigid-flexible coupling motion platform. BACKGROUND

[0002] In the field of modern industrial production and scientific research, the precision and performance of the motion platform play a crucial role in the completion of many key tasks. The traditional rigid motion platform has been widely used in early industrial applications due to its structural stability and high load capacity. However, with the continuous progress of technology, the requirements for the precision and performance of the motion platform are increasing, and the limitations of the rigid platform gradually emerge.

[0003] During the operation of the rigid platform, friction between components is inevitable due to its structural characteristics, and this friction can seriously affect the motion precision of the platform. The small frictional resistance not only causes the hysteresis phenomenon of the platform motion, but also causes the wear of the components after long-term operation, further reducing the precision and reliability of the platform. In order to overcome these shortcomings of the rigid platform, the rigid-flexible coupling motion platform emerges as the times require. The rigid-flexible coupling platform can effectively reduce the influence of friction on the platform motion by introducing flexible structure, and has better precision performance compared with the traditional rigid platform.

[0004] In terms of driving mode of the motion platform, the traditional driving mode also has certain limitations in precision and stability. At present, the ball screw driving mode has been more and more widely used in the field of motion platform due to its many advantages. By using ball screw driving, good contact can be generated between the rigid-flexible coupling platform and the screw, which helps to reduce the vibration of the platform and improve the stability of the platform motion. At the same time, under the condition of the same precision of the servo motor, the driving precision of the ball screw is inversely proportional to the lead, that is, the smaller the lead, the higher the driving precision. However, the lead is inversely proportional to the load capacity, that is, the smaller the lead, the lower the load capacity. Therefore, in the process of design and application, the balance between driving precision and load capacity needs to be considered to meet the needs of the motion platform in different scenarios. In view of this, the utility model provides a differential screw rigid-flexible coupling motion platform. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art that the rigid-flexible coupling motion platform can reduce friction and improve precision, but the flexible hinge is easy to vibrate, and the ball screw driving in the driving mode of the motion platform has the problem that the lead and the driving precision and the load capacity are mutually restricted, and provides a differential screw rigid-flexible coupling motion platform.

[0006] The utility model discloses a technical scheme: a differential screw rigid-flexible coupling motion platform, including the base, the top of base is provided with the opening, install the drive mechanism in the base, set up the synchronous board, the locating plate and the motor board in the top of base, install the adjustment assembly below the synchronous board, the locating plate and the motor board, the adjustment assembly is used for fine tuning the distance between the synchronous board and the locating plate, the movable end of drive mechanism is connected with the locating plate, and the drive mechanism is used for driving the synchronous board, the locating plate and the motor board and moves synchronously.

[0007] Optionally, the synchronous plate includes a mounting frame, a plurality of first flexible sheets are fixedly connected to the inner side of the mounting frame, the mounting frame is connected with a mounting table through the first flexible sheets, second flexible sheets are arranged on both sides of the mounting table, first pressing blocks are arranged on the side of the second flexible sheets away from the mounting table, the first pressing blocks are fixed with the mounting table through bolts, second pressing blocks are further arranged on the side of the second flexible sheets close to the mounting table, and the second pressing blocks are fixed with the mounting frame through bolts.

[0008] Optionally, first sliding blocks are installed at the bottom of the mounting frame, the locating plate and the motor plate, and a plurality of first sliding rails are slidably connected below the first sliding blocks on the same side, and the two first sliding rails are installed on the top of the base.

[0009] Optionally, the drive mechanism includes a first servo motor installed on the inner side of the base, a first threaded rod is fixedly connected to the output end of the first servo motor, at least two positioning blocks are rotatably connected to the first threaded rod, and the positioning blocks are fixedly connected to the inner side of the base.

[0010] Optionally, a first threaded sleeve is threadedly connected to the first threaded rod, a moving block is fixedly connected to the first threaded sleeve, and the moving block is fixedly connected with the locating plate.

[0011] Optionally, the adjustment assembly includes a second threaded sleeve installed in the moving block, a second threaded rod is threadedly connected in the second threaded sleeve, a third threaded sleeve is threadedly connected to the second threaded rod, a synchronous block is fixedly connected to the third threaded sleeve, and the synchronous block is fixedly connected with the mounting table.

[0012] Optionally, the adjustment assembly further includes a second servo motor, an installation plate is arranged on the outer side of the second servo motor, the second servo motor is installed on the installation plate, the output end of the second servo motor penetrates through the installation plate and is fixedly connected with the second threaded rod, and the installation plate is connected to the bottom of the motor plate.

[0013] Optionally, when the motor plate is fixedly connected with the mounting frame or the motor plate is fixedly connected with the locating plate, a matching mechanism is arranged between the installation plate and the motor plate.

[0014] Optionally, the matching mechanism comprises a second sliding rail fixedly connected to the top of the mounting plate, and a second sliding block slidably connected to the second sliding rail, and the second sliding block is fixedly connected to the motor plate.

[0015] Optionally, the second threaded sleeve has an internal thread pitch greater than that of the third threaded sleeve, and the second threaded rod has different thread pitches at two ends.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] The present application can effectively reduce the influence of friction between the first sliding block and the first sliding rail on the movement of the mounting table, and has better precision performance.

[0018] Further, the driving mechanism can improve the movement stroke of the mounting table, and the adjusting assembly can accurately adjust the position of the mounting table, ensuring the accuracy of positioning.

[0019] In summary, the present application can improve the application efficiency of the motion platform in industrial production and scientific research, meet the increasing demand for high precision and high stability, and has important practical significance and application value. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure schematic diagram of a differential screw rigid-flexible coupling motion platform;

[0021] Figure 2 is Figure 1 a cross-sectional structure schematic diagram of

[0022] Figure 3 is Figure 2 an enlarged schematic diagram of A in

[0023] Figure 4 is a structure schematic diagram of the motor plate and the mounting frame;

[0024] Figure 5 is Figure 4 a cross-sectional structure schematic diagram of

[0025] Figure 6 is a structure schematic diagram of another mounting position of the second servo motor;

[0026] Figure 7 is Figure 6 a cross-sectional structure schematic diagram of

[0027] Figure 8 is a structure schematic diagram of the motor plate and the positioning plate;

[0028] Figure 9 is Figure 8A cross-sectional structural schematic view of the device.

[0029] Reference signs:

[0030] 1, base; 11, first sliding block; 12, first sliding rail;

[0031] 2, driving mechanism; 21, first servo motor; 22, first threaded rod; 23, positioning block; 24, first threaded sleeve; 25, moving block;

[0032] 3, synchronization plate; 31, mounting frame; 32, first flexible sheet; 33, mounting table; 34, second flexible sheet; 35, first pressing block; 36, second pressing block;

[0033] 4, positioning plate; 5, motor plate;

[0034] 6, adjusting assembly; 61, second threaded sleeve; 62, second threaded rod; 63, third threaded sleeve; 64, synchronization block; 65, second servo motor; 66, mounting plate;

[0035] 7, matching mechanism; 71, second sliding rail; 72, second sliding block. DETAILED DESCRIPTION

[0036] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0037] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0038] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connection" should be broad sense understanding, for example, can be fixed connection, can be detachable connection, or integrally connected;Can be mechanical connection, can be electrical connection;Can be directly connected, can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0041] Embodiment one

[0042] As Figure 1 The utility model discloses a differential screw rigid-flexible coupling motion platform, including base 1, base 1 is the box shape setting of top opening, base 1 adopts the welding of multiple steel sheets or adopts the assembly of screw thread and is formed.This structure's base 1 has higher strength and stability, and the welding mode can make each steel sheet connect closely, and the integrity is strong;The threaded assembly is convenient to install and disassemble, and is convenient for later maintenance and adjustment.

[0043] Further, please refer to Figure 2 The above-mentioned motion platform includes the driving mechanism 2 installed in the base 1, and the moving end of the driving mechanism 2 is connected with the positioning plate 4, and the driving mechanism 2 is used to drive the synchronous plate 3, the positioning plate 4 and the motor plate 5 to move synchronously.The driving mechanism 2 includes the first servo motor 21 installed in the inner side of the base 1, and the output end of the first servo motor 21 is fixedly connected with the first threaded rod 22 through the shaft coupling, and the first servo motor 21 drives the first threaded rod 22 to rotate after starting.At least two groups of positioning blocks 23 are rotatably connected on the first threaded rod 22 through bearings, and the positioning blocks 23 are fixedly connected to the inner side of the base 1, and the positioning blocks 23 make the first threaded rod 22 keep in situ rotation, effectively avoid the axial movement of the threaded rod in the rotating process, and ensure the stability and accuracy of transmission.The first threaded rod 22 is screw connected with the first threaded sleeve 24, the first threaded sleeve 24 is fixedly connected with the moving block 25, the moving block 25 is fixedly connected with the positioning plate 4, and the first threaded rod 22 drives the first threaded sleeve 24 to move when rotating, and drives the positioning plate 4 to move through the moving block 25, and this structure realizes the efficient conversion of the rotary motion of the motor to linear motion, and provides stable power for the overall movement of the platform.

[0044] The driving mechanism 2 can also adopt a linear motor, and the moving end of the linear motor is connected with the positioning plate 4, for realizing long-stroke movement.The linear motor driving mode has fast response speed and high precision, and can meet the demand of the motion platform in some fast long-distance movement scenes.

[0045] Further, the above-mentioned motion platform further comprises a synchronous plate 3, a positioning plate 4 and a motor plate 5 arranged above the base 1, the positioning plate 4 is arranged on the side of the synchronous plate 3 close to the first servo motor 21, and the motor plate 5 is arranged on the side of the synchronous plate 3 away from the first servo motor 21.

[0046] As shown in Figure 1 and Figure 3 , the synchronous plate 3 comprises a mounting frame 31, a plurality of groups of first flexible sheets 32 are fixedly connected to the inner side of the mounting frame 31, and the mounting frame 31 is connected with a mounting table 33 through the first flexible sheets 32. The mounting table 33 is connected with the mounting frame 31 through the first flexible sheets 32, which is used to eliminate the influence of the friction between the first sliding block 11 and the first sliding rail 12. The first flexible sheet 32 can effectively buffer and absorb the slight vibration and impact force generated between the sliding block and the sliding rail due to friction, so that the movement of the mounting table 33 is more stable and smooth, and the interference of these adverse factors on the positioning accuracy of the platform is avoided. The two sides of the mounting table 33 are provided with second flexible sheets 34, the side of the second flexible sheet 34 away from the mounting table 33 is provided with a first pressing block 35, and the first pressing block 35 is fixed with the mounting table 33 through bolts. The side of the second flexible sheet 34 close to the mounting table 33 is also provided with a second pressing block 36, and the second pressing block 36 is fixed with the mounting frame 31 through bolts. Through the setting of the first pressing block 35 and the second pressing block 36, the second flexible sheet 34 is fixed firmly with the mounting frame 31 and the mounting table 33. Through the second flexible sheet 34, the connection stability between the mounting table 33 and the mounting frame 31 is further improved, and the influence of friction is eliminated. The design of double flexible sheets greatly improves the stability and anti-interference ability of the mounting table 33.

[0047] Specifically, the first sliding block 11 is installed at the bottom of the mounting frame 31, the positioning plate 4 and the motor plate 5, and a plurality of groups of first sliding blocks 11 on the same side are connected with the first sliding rail 12 below. The two groups of first sliding rails 12 are installed on the top of the base 1. Through the setting of the first sliding block 11 and the first sliding rail 12, the movement of the mounting frame 31, the positioning plate 4 and the motor plate 5 is stable. This cooperation mode of sliding block and sliding rail can accurately guide the movement direction of each component, and ensures the straightness and flatness of the platform in the movement process, which provides a basic guarantee for realizing high-precision positioning.

[0048] Further, the adjusting assembly 6 installed below the synchronous plate 3, the positioning plate 4 and the motor plate 5 is used for fine adjustment of the distance between the synchronous plate 3 and the positioning plate 4. The adjusting assembly 6 comprises a second threaded sleeve 61 installed in the moving block 25, and the position of the second threaded sleeve 61 remains fixed after the first servo motor 21 stops. The second threaded sleeve 61 is threadedly connected with a second threaded rod 62, and the second threaded rod 62 moves along the length direction of itself when rotating. The second threaded rod 62 is threadedly connected with a third threaded sleeve 63, and the second threaded rod 62 drives the third threaded sleeve 63 to move along the length direction of itself when rotating. The third threaded sleeve 63 is fixedly connected with a synchronous block 64, and the synchronous block 64 is fixedly connected with the mounting table 33, and the third threaded sleeve 63 drives the mounting table 33 to move through the synchronous block 64 when moving. The adjusting assembly 6 further comprises a second servo motor 65, and the second servo motor 65 is provided with a mounting plate 66 outside, the second servo motor 65 is installed on the mounting plate 66, the output end of the second servo motor 65 penetrates through the mounting plate 66 and is fixedly connected with the second threaded rod 62 through a shaft coupling, and the mounting plate 66 is connected to the bottom of the motor plate 5. The second servo motor 65 drives the second threaded rod 62 to rotate after being started. When the second threaded rod 62 rotates, the moving direction thereof is opposite to that of the third threaded sleeve 63. Since the internal thread pitch of the second threaded sleeve 61 is greater than that of the third threaded sleeve 63, the thread pitch at both ends of the second threaded rod 62 is different, and the moving distance of the third threaded sleeve 63 is less than that of the second threaded rod 62, so as to reduce the displacement of the third threaded sleeve 63 and improve the positioning accuracy of the mounting table 33. The adjusting assembly 6 with the differential screw structure can realize high-precision fine adjustment of the position of the mounting table 33, and meets the needs of the motion platform in some working scenarios with extremely high positioning accuracy requirements.

[0049] Further, a plurality of bases 1 can be orthogonally arranged to perform accurate adjustment of positions in multiple directions. Among the plurality of orthogonally arranged bases 1, the mounting table 33 and the orthogonally arranged bases 1 are fixedly connected. The orthogonally arranged mode of the plurality of bases 1 greatly expands the motion dimension of the motion platform, so that accurate position adjustment can be performed in multiple directions, and the applicability and flexibility of the platform are greatly improved.

[0050] In this embodiment, when adjusting the approximate position of the mounting table 33, the first servo motor 21 is started to drive the first threaded rod 22 to rotate, and the first threaded rod 22 drives the first threaded sleeve 24 to move when rotating, and the first threaded sleeve 24 drives the positioning plate 4 to move through the moving block 25, and the positioning plate 4 moves stably under the limiting action of the first sliding block 11 and the first sliding rail 12. At this time, since the synchronous plate 3, the positioning plate 4 and the motor plate 5 are connected together through the adjusting assembly 6, the positioning plate 4 moves synchronously with the synchronous plate 3. When fine-tuning the position of the mounting table 33, the second servo motor 65 is started to drive the second threaded rod 62 to rotate. When the second threaded rod 62 rotates, the second threaded rod 62 moves along its length direction due to the fixed position of the second threaded sleeve 61, and drives the third threaded sleeve 63 to move, and drives the second servo motor 65, the mounting plate 66 and the motor plate 5 to move. At the same time, when the second threaded rod 62 rotates, it also drives the third threaded sleeve 63 to move, and the moving direction of the third threaded sleeve 63 is opposite to that of the second threaded rod 62, and since the internal thread pitch of the second threaded sleeve 61 is larger than that of the third threaded sleeve 63, the displacement of the third threaded sleeve 63 is smaller when the second threaded rod 62 rotates one circle, which facilitates the fine adjustment of the position of the mounting table 33, and makes the positioning of the mounting table 33 accurate. At the same time, through the setting of the first flexible sheet 32 and the second flexible sheet 34, the influence of the friction force between the first sliding block 11 and the first sliding rail 12 on the mounting table 33 can be effectively prevented.

[0051] Embodiment two

[0052] As shown in Figure 4 and Figure 5 , based on the basis of embodiment one, in this embodiment, the motor plate 5 is fixedly connected with the mounting frame 31, and the motor plate 5 moves synchronously with the mounting table 33. A cooperation mechanism 7 is arranged between the mounting plate 66 and the motor plate 5, and the cooperation mechanism 7 includes a second sliding rail 71 fixedly connected to the top of the mounting plate 66, and a second sliding block 72 slidably connected to the second sliding rail 71, and the second sliding block 72 is fixedly connected with the motor plate 5, so that the mounting plate 66 slides at the bottom of the motor plate 5 through the setting of the second sliding rail 71 and the second sliding block 72. The cooperation of the second sliding rail 71 and the second sliding block 72 provides accurate guidance for the movement of the mounting plate 66, so that the mounting plate 66 can slide stably relative to the motor plate 5 during fine-tuning, further ensuring the stability and accuracy of the mounting table 33 during fine-tuning.

[0053] In this embodiment, when fine-tuning the position of the mounting table 33, the second servo motor 65 is started, and the second servo motor 65 drives the second threaded rod 62 to rotate. When the second threaded rod 62 rotates, since the position of the second threaded sleeve 61 is fixed, the second threaded rod 62 moves along the length direction of itself, and drives the third threaded sleeve 63 to move. The second threaded rod 62 drives the second servo motor 65 and the mounting plate 66 to move while moving, and the mounting plate 66 slides below the motor plate 5 due to the arrangement of the second sliding rail 71 and the second sliding block 72. At the same time, when the second threaded rod 62 rotates, the third threaded sleeve 63 also moves, and the moving direction of the third threaded sleeve 63 is opposite to the moving direction of the second threaded rod 62, and since the internal thread pitch of the second threaded sleeve 61 is larger than the internal thread pitch of the third threaded sleeve 63, the displacement of the third threaded sleeve 63 is smaller when the second threaded rod 62 rotates one circle, which is convenient for fine-tuning the position of the mounting table 33, and makes the positioning of the mounting table 33 accurate. At the same time, through the arrangement of the first flexible sheet 32 and the second flexible sheet 34, the influence of the frictional force between the first sliding block 11 and the first sliding rail 12 on the mounting table 33 can be effectively prevented.

[0054] Embodiment three

[0055] As shown in Figure 6 and Figure 7 , based on the basis of embodiment one, the positioning plate 4 is arranged on the side of the synchronous plate 3 close to the first servo motor 21, and the motor plate 5 is arranged on the side of the positioning plate 4 close to the first servo motor 21.

[0056] In this embodiment, when the approximate position of the mounting table 33 is adjusted, the first servo motor 21 is started to drive the first threaded rod 22 to rotate, and the first threaded rod 22 drives the first threaded sleeve 24 to move when rotating, and the first threaded sleeve 24 drives the positioning plate 4 to move through the moving block 25, and the positioning plate 4 moves stably under the limiting action of the first sliding block 11 and the first sliding rail 12. At this time, since the synchronous plate 3, the positioning plate 4 and the motor plate 5 are connected together through the adjusting assembly 6, the positioning plate 4 moves synchronously with the synchronous plate 3. When the position of the mounting table 33 is fine-tuned, the second servo motor 65 is started to drive the second threaded rod 62 to rotate. When the second threaded rod 62 rotates, the second threaded rod 62 moves along the length direction of itself due to the fixed position of the second threaded sleeve 61, and drives the third threaded sleeve 63 to move, and drives the second servo motor 65, the mounting plate 66 and the motor plate 5 to move. At the same time, when the second threaded rod 62 rotates, the third threaded sleeve 63 also moves, and the moving direction of the third threaded sleeve 63 is opposite to that of the second threaded rod 62, and since the internal thread pitch of the second threaded sleeve 61 is larger than that of the third threaded sleeve 63, the displacement of the third threaded sleeve 63 is smaller when the second threaded rod 62 rotates one circle, which is convenient for fine adjustment of the position of the mounting table 33, so that the positioning of the mounting table 33 is accurate. At the same time, through the setting of the first flexible sheet 32 and the second flexible sheet 34, the influence of the friction force between the first sliding block 11 and the first sliding rail 12 on the mounting table 33 can be effectively prevented.

[0057] Embodiment Four

[0058] As shown in Figure 8 and Figure 9 , based on the basis of embodiment three, in this embodiment, the motor plate 5 and the positioning plate 4 are fixedly connected, and the motor plate 5 and the positioning plate 4 move synchronously. The mounting plate 66 and the motor plate 5 are provided with a cooperation mechanism 7, and the cooperation mechanism 7 includes a second sliding rail 71 fixedly connected to the top of the mounting plate 66, and a second sliding block 72 slidably connected to the second sliding rail 71, and the second sliding block 72 is fixedly connected with the motor plate 5, and through the setting of the second sliding rail 71 and the second sliding block 72, the mounting plate 66 slides at the bottom of the motor plate 5.

[0059] In the embodiment, when fine-tuning the position of the mounting table 33, the second servo motor 65 is started to drive the second threaded rod 62 to rotate. When the second threaded rod 62 rotates, the second threaded rod 62 moves along the length direction of the second threaded rod 62 and drives the third threaded sleeve 63 to move, because the position of the second threaded sleeve 61 is fixed. The second threaded rod 62 drives the second servo motor 65 and the mounting plate 66 to move, because the mounting plate 66 is arranged to slide under the motor plate 5 through the second sliding rail 71 and the second sliding block 72. At the same time, when the second threaded rod 62 rotates, the third threaded sleeve 63 is driven to move, and the moving direction of the third threaded sleeve 63 is opposite to the moving direction of the second threaded rod 62. Because the internal thread pitch of the second threaded sleeve 61 is larger than the internal thread pitch of the third threaded sleeve 63, the displacement of the third threaded sleeve 63 is small when the second threaded rod 62 rotates one circle, so that the position of the mounting table 33 can be fine-tuned, and the positioning of the mounting table 33 is accurate. At the same time, through the arrangement of the first flexible sheet 32 and the second flexible sheet 34, the influence of the friction force between the first sliding block 11 and the first sliding rail 12 on the mounting table 33 can be effectively prevented.

[0060] The above specific embodiments are only several optional embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make multiple alternative improvements and combinations to the above specific embodiments.

Claims

1. A differential lead screw rigid-flexible coupling motion platform, characterized in that, include: A base (1) having an opening at its top; The drive mechanism (2) is installed in the base (1); The synchronization plate (3), positioning plate (4) and motor plate (5) are disposed above the base (1); An adjustment component (6) is installed below the synchronization plate (3), the positioning plate (4) and the motor plate (5). The adjustment component (6) is used to fine adjust the distance between the synchronization plate (3) and the positioning plate (4). The moving end of the drive mechanism (2) is connected to the positioning plate (4). The drive mechanism (2) is used to drive the synchronization plate (3), the positioning plate (4) and the motor plate (5) to move synchronously.

2. The differential screw rigid-flexible coupling motion platform according to claim 1, characterized in that, The synchronization plate (3) includes a mounting frame (31). Multiple sets of first flexible sheets (32) are fixedly connected to the inner side of the mounting frame (31). The mounting frame (31) is connected to a mounting platform (33) through the first flexible sheets (32). Second flexible sheets (34) are provided on both sides of the mounting platform (33). A first pressure block (35) is provided on the side of the second flexible sheet (34) away from the mounting platform (33). The first pressure block (35) is fixed to the mounting platform (33) by bolts. A second pressure block (36) is also provided on the side of the second flexible sheet (34) close to the mounting platform (33). The second pressure block (36) is fixed to the mounting frame (31) by bolts.

3. The differential lead screw rigid-flexible coupling motion platform according to claim 2, characterized in that, The bottom of the mounting frame (31), positioning plate (4) and motor plate (5) are all equipped with first sliders (11), and multiple sets of first sliders (11) on the same side are slidably connected to first slide rails (12), and both sets of first slide rails (12) are installed on the top of the base (1).

4. A differential lead screw rigid-flexible coupling motion platform according to claim 3, characterized in that, The drive mechanism (2) includes a first servo motor (21) installed inside the base (1). The output end of the first servo motor (21) is fixedly connected to a first threaded rod (22). At least two sets of positioning blocks (23) are rotatably connected to the first threaded rod (22). The positioning blocks (23) are fixedly connected to the inside of the base (1).

5. A differential lead screw rigid-flexible coupling motion platform according to claim 4, characterized in that, The first threaded rod (22) is threadedly connected to a first threaded sleeve (24), and a movable block (25) is fixedly connected to the first threaded sleeve (24). The movable block (25) is fixedly connected to the positioning plate (4).

6. A differential lead screw rigid-flexible coupling motion platform according to claim 5, characterized in that, The adjustment assembly (6) includes a second threaded sleeve (61) installed in the movable block (25), a second threaded rod (62) is threadedly connected to the second threaded sleeve (61), a third threaded sleeve (63) is threadedly connected to the second threaded rod (62), a synchronization block (64) is fixedly connected to the third threaded sleeve (63), and the synchronization block (64) is fixedly connected to the mounting platform (33).

7. A differential lead screw rigid-flexible coupling motion platform according to claim 6, characterized in that, The adjustment component (6) also includes a second servo motor (65), and a mounting plate (66) is provided on the outside of the second servo motor (65). The second servo motor (65) is mounted on the mounting plate (66), and the output end of the second servo motor (65) passes through the mounting plate (66) and is fixedly connected to the second threaded rod (62). The mounting plate (66) is connected to the bottom of the motor plate (5).

8. A differential lead screw rigid-flexible coupling motion platform according to claim 7, characterized in that, When the motor plate (5) is fixedly connected to the mounting frame (31) or the motor plate (5) is fixedly connected to the positioning plate (4), a mating mechanism (7) is provided between the mounting plate (66) and the motor plate (5).

9. A differential lead screw rigid-flexible coupling motion platform according to claim 8, characterized in that, The mating mechanism (7) includes a second slide rail (71) fixedly connected to the top of the mounting plate (66), a second slider (72) slidably connected on the second slide rail (71), and the second slider (72) fixedly connected to the motor plate (5).

10. A differential lead screw rigid-flexible coupling motion platform according to claim 9, characterized in that, The internal thread pitch of the second threaded sleeve (61) is greater than that of the internal thread pitch of the third threaded sleeve (63), and the thread pitches at both ends of the second threaded rod (62) are different.

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