Differential drive multi-station work platform

Abstract

This utility model relates to the field of work platform technology, and more particularly to a differential drive multi-station work platform. It primarily addresses the problem that existing multi-station platforms suffer from friction due to shared guide rails, and that fluctuations in driving force lead to displacement fluctuations at the nanometer level, making precise positioning difficult and failing to meet the accuracy requirements of ultra-precision multi-station operations, especially in testing. The proposed technical solution includes a base plate and multiple work platforms mounted on the base plate; at least one set of slides located on the side of each work platform; and a first adjustment component positioned between the work platforms and the slides. The first adjustment component includes a movable first servo motor, the output end of which is fixedly connected to a first coaxial rod, which consists of two lead screws with the same direction of rotation but different leads. This utility model can eliminate the influence of guide rail friction and offset driving force fluctuations, achieving precise positioning and meeting the accuracy requirements of ultra-precision multi-station operations, especially in testing.

Description

Technical Field

[0001] This utility model relates to the field of work platform technology, and in particular to a differential-driven multi-station work platform. Background Technology

[0002] The application of multi-station operation is becoming more and more widespread, which puts extremely high demands on the positioning accuracy of the work platform. Especially in multi-station inspection scenarios, ultra-precision multi-station work platforms have become an indispensable key equipment.

[0003] Currently, to meet the requirement that each workstation can move independently, existing multi-workstation platforms generally adopt a shared guide rail design, coupled with non-contact drive methods such as linear motors. This design approach aims to reduce interference through non-contact drive, thereby improving the platform's motion independence and flexibility.

[0004] However, in practical applications, the accuracy of existing multi-station platforms falls short of nanometer-level positioning standards. This stems primarily from two issues: firstly, guide rail friction directly impacts the platform's motion accuracy. Even though some platforms employ air-bearing guide rails to eliminate friction interference, thus mitigating accuracy loss due to friction to some extent, the problem of driving force fluctuations persists. This causes displacement fluctuations, further hindering improvements in the platform's overall accuracy and preventing it from meeting the stringent positioning accuracy requirements of ultra-precision multi-station operations, particularly multi-station inspection. Therefore, this invention proposes a differential-driven multi-station work platform. Utility Model Content

[0005] The purpose of this invention is to address the problem in the background technology that existing multi-station platforms suffer from friction due to shared guide rails, and that fluctuations in driving force can cause displacement fluctuations at the level of hundreds of nanometers, making it difficult to achieve precise positioning and failing to meet the requirements of ultra-precision multi-station operation, especially detection accuracy. The invention proposes a differential drive multi-station working platform.

[0006] The technical solution of this utility model is as follows: a differential-driven multi-station work platform, including a base plate and multiple work platforms disposed above the base plate; at least one set of slides located on the side of the work platforms; and a first adjustment component disposed between the work platforms and the slides. The first adjustment component includes a first servo motor that is movably disposed, and a first coaxial rod that is fixedly connected to the output end of the first servo motor. The first coaxial rod is composed of two lead screws with the same direction of rotation but different leads. The work platforms and slides are respectively threaded to the two ends of the lead screws. When the first coaxial rod rotates, the displacement of the work platform is controlled by the difference in the leads of the two lead screws.

[0007] Optionally, it also includes a first drive mechanism installed on the top of the base plate. The first drive mechanism includes a linear motor, which is provided with multiple sets of movers equal to the number of the working platform. The movers are fixedly connected to the slide table, and the slide table moves through a limiting component.

[0008] The limiting component includes two sets of first sliders fixedly connected to the bottom of the working platform and the slide table, and the linear motor is provided with first slide rails parallel to it on both sides. Multiple sets of first sliders are slidably connected to the two sets of first slide rails respectively.

[0009] Optionally, the first adjustment component further includes a first mounting block fixedly connected to the first servo motor, a second slide rail fixedly connected to one side of the first mounting block, a second slider slidably connected in the second slide rail, the second slider being fixedly connected to the work platform or slide table, the first coaxial rod being composed of a first lead screw and a second lead screw connected in a coaxial straight line, the first lead screw and the second lead screw being arranged parallel to the second slide rail, a second threaded sleeve being threadedly connected to the second lead screw, and a second connecting plate being fixedly connected to the outer ring of the second threaded sleeve.

[0010] Optionally, the first lead screw is threadedly connected to a first threaded sleeve, and the outer ring of the first threaded sleeve is fixedly connected to a first connecting plate. The second connecting plate and the first connecting plate are respectively fixedly connected to the work platform or the slide table. The first lead screw and the second lead screw have the same direction of rotation but different leads.

[0011] Optionally, it also includes an output plate located above the working platform and orthogonal to each other, with a synchronization plate on one side of the output plate; and a second adjustment component disposed between the output plate and the synchronization plate. The second adjustment component includes a second servo motor that is movably disposed, and a second coaxial rod that is fixedly connected to the output end of the second servo motor. The second coaxial rod is composed of two lead screws with the same direction of rotation but different leads. The output plate and the synchronization plate are respectively threaded to the two ends of the lead screws. When the second coaxial rod rotates, the displacement of the output plate is controlled by the change in the difference in the leads of the two lead screws.

[0012] Optionally, the second adjustment component further includes a second mounting block fixedly connected to the side of the second servo motor, a third slide rail fixedly connected to the side of the second mounting block, the third slide rail being perpendicular to the second slide rail, a third slider being slidably connected to the third slide rail, the third slider being fixedly connected to the output plate or the synchronization plate, the second coaxial rod being composed of a third lead screw and a fourth lead screw coaxially and linearly connected, the third lead screw and the fourth lead screw being parallel to the third slide rail, a fourth threaded sleeve being threadedly connected to the fourth lead screw, and a fourth connecting plate being fixedly connected to the outer ring of the fourth threaded sleeve.

[0013] Optionally, a third threaded sleeve is threadedly connected to the third lead screw, and a third connecting plate is fixedly connected to the outer ring of the third threaded sleeve. The third connecting plate and the fourth connecting plate are respectively fixedly connected to the output plate or the synchronization plate.

[0014] Optionally, the third lead screw and the fourth lead screw have the same direction of rotation but different leads.

[0015] Optionally, a second drive mechanism is also included, which is installed on the top of the work platform. The second drive mechanism is used to move the output plate and the synchronization plate. The second drive mechanism includes a movable seat fixedly connected to the top of the work platform. The movable seat is U-shaped. Side plates are fixedly connected to both sides of the movable seat. A third servo motor is installed on the side of the side plate away from the movable seat. The output end of the third servo motor passes through the side plate and is fixedly connected to a fifth lead screw. The fifth lead screw is parallel to the third slide rail. A fifth threaded sleeve is threadedly connected to the fifth lead screw. A fifth connecting plate is fixedly connected to the outer ring of the fifth threaded sleeve. The fifth connecting plate is fixedly connected to the bottom of the synchronization plate.

[0016] Optionally, the top of the movable seat is fixedly connected to two sets of fourth slide rails arranged parallel to the fifth lead screw. Each of the two sets of fourth slide rails is slidably connected to a fourth slider. The two sets of fourth sliders are fixedly connected to the bottom of the output board. Each of the two sets of fourth slide rails is slidably connected to a fifth slider. The two sets of fifth sliders are fixedly connected to the bottom of the synchronization board.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] This utility model uses a differential drive design of the first adjustment component and the second adjustment component to achieve minute displacement when the servo motor rotates by using lead screws with the same rotation direction but different leads. At the same time, with the limiting effect of each slide rail and slider, the influence of driving force fluctuation is effectively offset, and finally the output board is precisely positioned at the nanometer level in the two-dimensional direction, which meets the ultra-high precision requirements of multi-station detection and other scenarios.

[0019] Furthermore, the linear motor of the first drive mechanism drives multiple sets of movers and the working platform to move independently, and the third servo motor of the second drive mechanism drives the output plate and the synchronization plate to move synchronously through the fifth lead screw, realizing the independent movement and coarse adjustment of each workstation. Moreover, the first adjustment component and the second adjustment component can make precise fine adjustments on the basis of coarse adjustment. The combination of the two enables the platform to meet the needs of independent operation of multiple workstations and to flexibly realize high-precision position control, thereby improving the applicability of the equipment in complex multi-workstation scenarios.

[0020] In summary, this invention can eliminate the influence of guide rail friction and offset driving force fluctuations, achieving precise positioning and meeting the accuracy requirements of ultra-precision multi-station operation, especially detection. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the differential-driven multi-station work platform;

[0022] Figure 2 This is a schematic diagram of the first drive mechanism;

[0023] Figure 3 This is a partial cross-sectional schematic diagram of the first adjustment component;

[0024] Figure 4 This is a cross-sectional structural diagram of the second adjustment component;

[0025] Figure 5 This is a cross-sectional structural diagram of the second drive mechanism.

[0026] Figure label:

[0027] 1. Base plate; 2. Working platform; 3. First drive mechanism; 31. Linear motor; 32. Moving element; 33. Slide table; 34. First slider; 35. First slide rail;

[0028] 4. First adjusting component; 41. Second slider; 42. Second slide rail; 43. First mounting block; 44. First servo motor; 45. First lead screw; 46. Second lead screw; 47. Second threaded sleeve; 48. Second connecting plate; 49. First threaded sleeve; 410. First connecting plate;

[0029] 5. Output board; 6. Synchronization board; 7. Second adjustment component; 71. Third slider; 72. Third slide rail; 73. Second mounting block; 74. Second servo motor; 75. Third lead screw; 76. Fourth lead screw; 77. Fourth threaded sleeve; 78. Fourth connecting plate; 79. Third threaded sleeve; 710. Third connecting plate;

[0030] 8. Second drive mechanism; 81. Movable seat; 82. Side plate; 83. Third servo motor; 84. Fifth lead screw; 85. Fifth threaded sleeve; 86. Fifth connecting plate; 87. Fourth slide rail; 88. Fourth slider; 89. Fifth slider. Detailed Implementation

[0031] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0032] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0033] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Example 1

[0037] like Figure 1 As shown, the differential-driven multi-station work platform proposed in this utility model includes a base plate 1 and multiple work platforms 2 disposed above the base plate 1. It also includes at least one set of slides 33 located on the side of the work platform 2, and the work platform 2 moves synchronously when the slides 33 move.

[0038] For further details, please refer to Figure 1 and Figure 2The aforementioned working platform includes a first drive mechanism 3 mounted on the top of the base plate 1, which drives the working platform 2 to move. The first drive mechanism 3 includes a linear motor 31, which has multiple sets of movers 32, the same number as the working platform 2. The linear motor 31 drives the multiple sets of movers 32, thereby moving the multiple working platforms 2. At least one set of slides 33 is fixedly connected to each mover 32. When the mover 32 moves, it drives the slides 33 to move synchronously; when the mover 32 stops, the position of the slides 33 is fixed. The slides 33 achieve smooth movement through a limiting component, which includes two sets of first sliders 34 fixedly connected to the bottom of the working platform 2 and the slides 33 respectively. The linear motor 31 has first slide rails 35 parallel to it on both sides. The multiple sets of first sliders 34 are slidably connected to the two sets of first slide rails 35 respectively. Through the limiting effect of the first sliders 34 and the first slide rails 35, the movement of the working platform 2 and the slides 33 is smooth.

[0039] Furthermore, such as Figure 3As shown, the aforementioned working platform also includes a first adjustment component 4 disposed between the working platform 2 and the first drive mechanism 3. The first adjustment component 4 includes a first servo motor 44 movably disposed therebetween. The first servo motor 44 slides in cooperation with the working platform 2 or the slide table 33. The output end of the first servo motor 44 is fixedly connected to a first coaxial rod, which consists of two lead screws with the same direction of rotation but different leads. The working platform 2 and the slide table 33 respectively correspond to the two threaded parts of the lead screws. When the first coaxial rod rotates, the displacement of the working platform 2 is controlled by the difference in the leads of the two lead screws, thereby precisely adjusting the position of the working platform 2. The first adjustment component 4 also includes a first mounting block 43 fixedly connected to the first servo motor 44. A second slide rail 42 is fixedly connected to one side of the first mounting block 43. A second slider 41 is slidably connected in the second slide rail 42. Under the limiting action of the second slider 41 and the second slide rail 42, the movement of the first mounting block 43 is smooth. The second slider 41 is fixedly connected to the working platform 2 or the slide table 33. The first coaxial rod consists of a first lead screw 45 and a second lead screw 46 connected coaxially. After the first servo motor 44 starts, it drives the first lead screw 45 and the second lead screw 46 to rotate synchronously. The first lead screw 45 and the second lead screw 46 are arranged parallel to the second slide rail 42. A second threaded sleeve 47 is threadedly connected to the second lead screw 46. A second connecting plate 48 is fixedly connected to the outer ring of the second threaded sleeve 47. The second connecting plate 48 is fixedly connected to the bottom of a set of slide tables 33. The positions of the second threaded sleeve 47 and the second connecting plate 48 are fixed, so that the second lead screw 46 moves along its own length direction when it rotates, and drives the first servo motor 44 to move through the first lead screw 45. A first threaded sleeve 49 is threadedly connected to the first lead screw 45. When the first lead screw 45 rotates, it drives the first threaded sleeve 49 to move along the length direction of the first lead screw 45. The outer ring of the first threaded sleeve 49 is fixedly connected to the first connecting plate 410. The first connecting plate 410 is fixedly connected to the bottom of the working platform 2. When the first threaded sleeve 49 moves, it drives the working platform 2 to move through the first connecting plate 410.

[0040] It is worth mentioning that the first lead screw 45 and the second lead screw 46 have the same direction of rotation but different leads. Assuming the lead of the first lead screw 45 is 0.4 mm and the lead of the second lead screw 46 is 0.5 mm, when the first servo motor 44 drives the first lead screw 45 and the second lead screw 46 to rotate one revolution, since the second threaded sleeve 47 and the second connecting plate 48 are fixed in position, the second lead screw 46 moves 0.5 mm along its own length direction when rotating one revolution, thereby driving the first lead screw 45 and the first servo motor 44 to move 0.5 mm. Since the first lead screw 45 and the second lead screw 46 have the same direction of rotation, when the first lead screw 45 rotates one revolution, it drives the work platform 2 to move 0.4 mm in the opposite direction through the first threaded sleeve 49 and the first connecting plate 410. Therefore, when the first servo motor 44 drives the first lead screw 45 and the second lead screw 46 to rotate one revolution, the work platform 2 only moves 0.1 mm, achieving precise adjustment of the position of the work platform 2.

[0041] In this embodiment, after the linear motor 31 starts, it drives multiple sets of movers 32 to move. The movers 32 drive the slides 33 on both sides to move synchronously. Under the limiting guidance of the first slider 34 and the first slide rail 35, the working platform 2 moves smoothly with the movers 32 and the slides 33. When the movers 32 stop, the position of the slides 33 is fixed, providing a stable reference for the working platform 2.

[0042] Then, the first servo motor 44 starts, driving the first lead screw 45 and the second lead screw 46, which have the same direction of rotation but different leads, to rotate synchronously. Since the second threaded sleeve 47 is fixed to the second connecting plate 48 at the bottom of the slide table 33, the second lead screw 46 moves along its own length direction when it rotates, thereby driving the first lead screw 45 and the first servo motor 44 to move. Simultaneously, the first lead screw 45, through the first threaded sleeve 49 and the first connecting plate 410, drives the work platform 2 to move in the opposite direction to the movement of the first servo motor 44. Due to the difference in the leads of the two lead screws—0.4 mm for the first lead screw 45 and 0.5 mm for the second lead screw 46—the work platform 2 ultimately moves only 0.1 mm for every one revolution of the motor, achieving high-precision fine-tuning.

[0043] Example 2

[0044] like Figure 2 As shown, based on Embodiment 1, the above-mentioned working platform includes an output plate 5 located above the working platform 2 and orthogonal to each other. A synchronization plate 6 is provided on one side of the output plate 5, and the position of the output plate 5 is adjusted with the synchronization plate 6 as a reference.

[0045] Furthermore, such as Figure 4As shown, the aforementioned working platform includes a second adjustment component 7 disposed between the output plate 5 and the synchronization plate 6. The second adjustment component 7 includes a second servo motor 74 movably disposed, and a second coaxial rod is fixedly connected to the output end of the second servo motor 74. The second coaxial rod consists of two lead screws with the same direction of rotation but different leads. The output plate 5 and the synchronization plate 6 are respectively threaded to the two ends of the lead screws. When the second coaxial rod rotates, the displacement of the output plate 5 is controlled by the change in the difference in the leads of the two lead screws. The second adjustment component 7 is used to precisely adjust the position of the output plate 5. The second adjustment component 7 also includes a second mounting block 73 fixedly connected to the side of the second servo motor 74. A third slide rail 72 is fixedly connected to the side of the second mounting block 73. The third slide rail 72 is perpendicular to the second slide rail 42. A third slider 71 is slidably connected to the third slide rail 72. Under the limiting action of the third slider 71 and the third slide rail 72, the movement of the second mounting block 73 is smooth. The third slider 71 is fixedly connected to the output plate 5 or the synchronization plate 6. The second coaxial rod consists of a third lead screw 75 and a fourth lead screw 76 connected coaxially. After the second servo motor 74 starts, it drives the third lead screw 75 and the fourth lead screw 76 to rotate synchronously. The third lead screw 75 and the fourth lead screw 76 are both arranged parallel to the third slide rail 72. A fourth threaded sleeve 77 is threadedly connected to the fourth lead screw 76. A fourth connecting plate 78 is fixedly connected to the outer ring of the fourth threaded sleeve 77. The fourth connecting plate 78 is fixedly connected to the bottom of the synchronization plate 6. The positions of the fourth threaded sleeve 77 and the fourth connecting plate 78 are fixed, so that the fourth lead screw 76 moves along its own length direction when it rotates, and drives the second servo motor 74 to move through the third lead screw 75. A third threaded sleeve 79 is threadedly connected to the third lead screw 75. When the third lead screw 75 rotates, it drives the third threaded sleeve 79 to move along the length direction of the third lead screw 75. The outer ring of the third threaded sleeve 79 is fixedly connected to the third connecting plate 710. The third connecting plate 710 is fixedly connected to the bottom of the output plate 5. When the third threaded sleeve 79 moves, it drives the output plate 5 to move through the third connecting plate 710.

[0046] It is worth mentioning that the third lead screw 75 and the fourth lead screw 76 have the same direction of rotation but different leads. Assuming the lead of the third lead screw 75 is 0.4 mm and the lead of the fourth lead screw 76 is 0.5 mm, when the second servo motor 74 drives the third lead screw 75 and the fourth lead screw 76 to rotate one revolution, since the fourth threaded sleeve 77 and the fourth connecting plate 78 are fixed in position, the fourth lead screw 76 moves 0.5 mm along its own length direction when rotating one revolution, thereby driving the third lead screw 75 and the second servo motor 74 to move 0.5 mm. Since the third lead screw 75 and the fourth lead screw 76 have the same direction of rotation, when the third lead screw 75 rotates one revolution, it drives the output plate 5 to move 0.4 mm in the opposite direction through the third threaded sleeve 79 and the third connecting plate 710. Therefore, when the second servo motor 74 drives the third lead screw 75 and the fourth lead screw 76 to rotate one revolution, the output plate 5 only moves 0.1 mm, achieving precise adjustment of the position of the output plate 5. By using the first adjustment component 4 in conjunction with the second adjustment component 7, the position of the output board 5 can be precisely adjusted in a two-dimensional direction to ensure its positioning accuracy.

[0047] For further details, please refer to Figure 1 and Figure 5The aforementioned work platform also includes a second drive mechanism 8 installed on the top of the work platform 2. The second drive mechanism 8 is used to move the output plate 5 and the synchronization plate 6. The second drive mechanism 8 includes a movable seat 81 fixedly connected to the top of the work platform 2. The movable seat 81 is U-shaped, and the work platform 2 moves synchronously with the movable seat 81. Side plates 82 are fixedly connected to both sides of the movable seat 81. A third servo motor 83 is installed on the side of one set of side plates 82 away from the movable seat 81. The output end of the third servo motor 83 passes through the side plate 82 and is fixedly connected to a fifth lead screw 84. After the third servo motor 83 is started, it drives the fifth lead screw 84 to rotate. The fifth lead screw 84 is set parallel to the third slide rail 72, so that the fifth lead screw 84 is set perpendicular to the first slide rail 35, which facilitates the coarse adjustment of the position of the output plate 5. A fifth threaded sleeve 85 is threadedly connected to the fifth lead screw 84. When the fifth lead screw 84 rotates, it drives the fifth threaded sleeve 85 to move along the length of the fifth lead screw 84. The fifth threaded sleeve 85 is fixedly connected to a fifth connecting plate 86 on its outer ring. The fifth connecting plate 86 is fixedly connected to the bottom of the synchronization plate 6. When the fifth threaded sleeve 85 moves, it drives the synchronization plate 6 to move synchronously through the fifth connecting plate 86. Furthermore, when the second servo motor 74 is not started, the output plate 5 and the synchronization plate 6 are connected through the third lead screw 75 and the fourth lead screw 76, allowing the output plate 5 and the synchronization plate 6 to move synchronously. Two sets of fourth slide rails 87, parallel to the fifth lead screw 84, are fixedly connected to the top of the moving base 81. A fourth slider 88 is slidably connected to each of the two sets of fourth slide rails 87. The two sets of fourth sliders 88 are fixedly connected to the bottom of the output plate 5. A fifth slider 89 is slidably connected to each of the two sets of fourth slide rails 87. The two sets of fifth sliders 89 are fixedly connected to the bottom of the synchronization plate 6. The limiting effect of the fourth slide rails 87, the fourth sliders 88, and the fifth sliders 89 ensures smooth movement of the output plate 5 and the synchronization plate 6.

[0048] In this embodiment, after the position of the work platform 2 is finely adjusted with high precision, the third servo motor 83 drives the fifth lead screw 84 to rotate, causing the fifth threaded sleeve 85 to move through the fifth connecting plate 86 and the synchronous plate 6. Under the limiting of the third slider 71 and the third slide rail 72 and the linkage of the second adjustment component 7, the output plate 5 moves synchronously with the synchronous plate 6, completing the coarse position adjustment. Then, the second servo motor 74 drives the third lead screw 75 and the fourth lead screw 76 to rotate. With the help of their opposite thread directions and different leads, the third lead screw 75 is 0.4 mm and the fourth lead screw 76 is 0.5 mm. When the motor rotates one revolution, the output plate 5 moves only 0.1 mm. Through the synergistic effect of the first adjustment component 4 in the direction parallel to the first slide rail 35 and the second adjustment component 7 in the direction perpendicular to the first slide rail 35, the output plate 5 is accurately positioned in the two-dimensional direction, effectively ensuring the ultra-high precision requirements of multi-station operation.

[0049] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A differential-driven multi-station work platform, characterized in that, include: A base plate (1) and multiple sets of working platforms (2) disposed above the base plate (1); At least one set of slides (33) located on the side of the work platform (2); A first adjustment component (4) is set between the work platform (2) and the slide (33). The first adjustment component (4) includes a first servo motor (44) that is movably set. The output end of the first servo motor (44) is fixedly connected to a first coaxial rod. The first coaxial rod is composed of two lead screws with the same direction of rotation and different leads. The work platform (2) and the slide (33) are respectively threaded to the two ends of the lead screw. When the first coaxial rod rotates, the displacement of the work platform (2) is controlled by the change in the difference of the leads of the two lead screws.

2. The differential-driven multi-station work platform according to claim 1, characterized in that, It also includes a first drive mechanism (3) installed on the top of the base plate (1). The first drive mechanism (3) includes a linear motor (31). The linear motor (31) is provided with multiple sets of movers (32) equal in number to the working platform (2). The movers (32) are fixedly connected to the slide (33). The slide (33) moves through a limiting component. The limiting component includes two sets of first sliders (34) fixedly connected to the bottom of the working platform (2) and the slide (33), and the linear motor (31) is provided with first slide rails (35) parallel to it on both sides. Multiple sets of first sliders (34) are slidably connected to the two sets of first slide rails (35).

3. The differential-driven multi-station work platform according to claim 2, characterized in that, The first adjustment component (4) further includes a first mounting block (43) fixedly connected to the first servo motor (44). A second slide rail (42) is fixedly connected to one side of the first mounting block (43). A second slider (41) is slidably connected in the second slide rail (42). The second slider (41) is fixedly connected to the work platform (2) or the slide table (33). The first coaxial rod is composed of a first lead screw (45) and a second lead screw (46) connected in a straight line. The first lead screw (45) and the second lead screw (46) are arranged parallel to the second slide rail (42). A second threaded sleeve (47) is threadedly connected to the second lead screw (46). A second connecting plate (48) is fixedly connected to the outer ring of the second threaded sleeve (47).

4. The differential-driven multi-station work platform according to claim 3, characterized in that, The first lead screw (45) is threaded with a first threaded sleeve (49), and the outer ring of the first threaded sleeve (49) is fixedly connected with a first connecting plate (410). The second connecting plate (48) and the first connecting plate (410) are respectively fixedly connected to the working platform (2) or the slide table (33). The first lead screw (45) and the second lead screw (46) have the same direction of rotation but different leads.

5. The differential-driven multi-station work platform according to claim 4, characterized in that, Also includes: An output board (5) is located above the work platform (2) and is orthogonal to each other, and a synchronization board (6) is provided on one side of the output board (5); The second adjustment component (7) is located between the output plate (5) and the synchronization plate (6). The second adjustment component (7) includes a movable second servo motor (74). The output end of the second servo motor (74) is fixedly connected to a second coaxial rod. The second coaxial rod consists of two lead screws with the same direction of rotation but different leads. The output plate (5) and the synchronization plate (6) are respectively threaded to the two ends of the lead screws. When the second coaxial rod rotates, the displacement of the output plate (5) is controlled by the difference in the leads of the two lead screws.

6. The differential-driven multi-station work platform according to claim 5, characterized in that, The second adjustment component (7) further includes a second mounting block (73) fixedly connected to the side of the second servo motor (74). A third slide rail (72) is fixedly connected to the side of the second mounting block (73). The third slide rail (72) is perpendicular to the second slide rail (42). A third slider (71) is slidably connected to the third slide rail (72). The third slider (71) is fixedly connected to the output plate (5) or the synchronization plate (6). The second coaxial rod is composed of a third lead screw (75) and a fourth lead screw (76) connected in a straight line. The third lead screw (75) and the fourth lead screw (76) are both parallel to the third slide rail (72). A fourth threaded sleeve (77) is threadedly connected to the fourth lead screw (76). A fourth connecting plate (78) is fixedly connected to the outer ring of the fourth threaded sleeve (77).

7. The differential-driven multi-station work platform according to claim 6, characterized in that, The third lead screw (75) is threaded with a third threaded sleeve (79), and the outer ring of the third threaded sleeve (79) is fixedly connected with a third connecting plate (710). The third connecting plate (710) and the fourth connecting plate (78) are respectively fixedly connected to the output plate (5) or the synchronization plate (6).

8. The differential-driven multi-station work platform according to claim 7, characterized in that, The third lead screw (75) and the fourth lead screw (76) have the same direction of rotation but different leads.

9. The differential-driven multi-station work platform according to claim 8, characterized in that, It also includes a second drive mechanism (8) installed on the top of the work platform (2). The second drive mechanism (8) is used to drive the output plate (5) and the synchronization plate (6) to move. The second drive mechanism (8) includes a movable seat (81) fixedly connected to the top of the work platform (2). The movable seat (81) is arranged in the shape of "U". Side plates (82) are fixedly connected to both sides of the movable seat (81). A third servo motor (83) is installed on the side of the side plate (82) away from the movable seat (81). The output end of the third servo motor (83) passes through the side plate (82) and is fixedly connected to a fifth lead screw (84). The fifth lead screw (84) is arranged parallel to the third slide rail (72). A fifth threaded sleeve (85) is threadedly connected to the fifth lead screw (84). A fifth connecting plate (86) is fixedly connected to the outer ring of the fifth threaded sleeve (85). The fifth connecting plate (86) is fixedly connected to the bottom of the synchronization plate (6).

10. The differential-driven multi-station work platform according to claim 9, characterized in that, The top of the movable seat (81) is fixedly connected to two sets of fourth slide rails (87) arranged parallel to the fifth lead screw (84). Each of the two sets of fourth slide rails (87) is slidably connected to a fourth slider (88). The two sets of fourth sliders (88) are fixedly connected to the bottom of the output plate (5). Each of the two sets of fourth slide rails (87) is slidably connected to a fifth slider (89). The two sets of fifth sliders (89) are fixedly connected to the bottom of the synchronization plate (6).

Images