High-precision lifting mechanism stretching out and drawing back through thread transmission

Abstract

The utility model discloses a high-precision lifting mechanism capable of stretching out and drawing back through thread transmission, and relates to the technical field of destacking and stacking of collaborative robots. One end of the speed reducer is fixedly connected with the servo motor, and the other end is provided with a synchronizing wheel; the synchronous wheel is in transmission with the synchronous belt; the synchronous belt is rotationally connected with an inner transmission lead screw. The inner transmission lead screw is rotationally connected with the spline shaft; the spline shaft is rotationally connected with one end of the internal spline lead screw, the other end of the internal spline lead screw is in sliding connection with the upper guide square tube, and the upper guide square tube is in sliding connection with the middle guide square tube. And the transmission stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of collaborative robot palletizing and disassembling, and in particular relates to a high-precision lifting mechanism utilizing threaded transmission and telescoping. Background Art

[0002] As the global manufacturing industry accelerates its transformation toward intelligent and flexible manufacturing, market demand for automated palletizing equipment continues to grow. Industries like food, pharmaceuticals, and daily necessities face significant demand for palletizing operations. Traditional manual palletizing suffers from numerous drawbacks, including worker fatigue, low efficiency, difficulty recruiting, and rising labor costs. Traditional industrial palletizing robots, however, are bulky, complex to program, and lack flexibility, making them unable to meet the demands of businesses for automated upgrades. Consequently, the collaborative robot palletizing industry has emerged.

[0003] Threaded drive offers advantages such as high transmission accuracy, large load capacity, smooth transmission, and excellent self-locking properties. It meets the high-precision lifting requirements of telescopic vertical axes in small trusses. By properly designing thread parameters such as pitch and thread profile, precise displacement control can be achieved. Furthermore, threaded drive mechanisms are relatively simple in structure, easy to manufacture and maintain, and relatively low in cost, making them widely used in high-precision lifting mechanisms.

[0004] Collaborative robots, due to their simple programming, flexible deployment, and easy operation, are well-suited for production lines with limited space and dense personnel, as well as flexible production lines with "small batches and high varieties." However, as collaborative robots are deployed in various complex work environments, expanding their working range has become a pressing issue. To enhance the efficiency and flexibility of collaborative robots, lifting column technology has emerged. In the packaging and palletizing industry in particular, lifting systems have played a significant role in improving efficiency and expanding the working range, compensating for the shortcomings of collaborative robots. Utility Model Content

[0005] The purpose of the utility model is to provide a high-precision lifting mechanism that utilizes threaded transmission and telescoping to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A high-precision lifting mechanism utilizing threaded transmission for telescopic movement comprises a base with a reducer mounted on the base. One end of the reducer is fixedly connected to a servo motor, and the other end is mounted to a synchronous pulley. The synchronous pulley is driven by a synchronous belt. The synchronous belt is rotatably connected to an internal drive screw. The internal drive screw is rotatably connected to a spline shaft. The spline shaft is rotatably connected to one end of the internal spline screw, and the other end of the internal spline screw is slidably connected to an upper guide square tube, which is in turn slidably connected to a middle guide square tube.

[0008] The above technical solution employs a reducer fixedly connected to the servo motor, reducing the servo motor's output speed while simultaneously increasing its output torque. The servo motor, the power source for the entire lifting mechanism, precisely controls parameters such as speed, direction, and output torque based on control signals. This achieves high-precision angle control and speed regulation, enabling the lifting mechanism to be precisely positioned at the desired height during the lifting process, meeting the high-precision requirements.

[0009] The fixed connection between the base and the reducer reduces unnecessary clearance and looseness, allowing the power output of the reducer to be transmitted more accurately and stably along the established transmission path, avoiding problems such as power loss and transmission deviation caused by unstable connection parts.

[0010] A further improvement of the technical solution of the utility model is that it also includes a lower guide square tube, and the lower guide square tube is slidably connected to the middle guide square tube.

[0011] With the above technical solution, as the lifting mechanism carries heavy objects for lifting and lowering operations, each component needs to bear a corresponding load. The sliding connection between the lower guide square tube and the middle guide square tube allows the two to share the load. The lower guide square tube can provide additional support for the middle guide square tube, transferring part of the load to the base through itself, preventing the middle guide square tube from deforming or being damaged due to bearing a large load alone. This improves the load-bearing capacity of the entire guide structure, thereby ensuring that the entire lifting mechanism can operate reliably under different load conditions and effectively enhancing the structural strength.

[0012] A further improvement of the technical solution of the utility model is that it also includes a bearing seat, which is rotatably connected to the spline shaft.

[0013] The above technical solution is adopted, in which the bearing seat is rotatably connected to the spline shaft, and the internal bearing structure can effectively reduce the friction of the spline shaft during rotation. The bearing has a high-precision rolling element and raceway design, which allows the spline shaft to rotate smoothly around its axis, ensuring the stability of the rotation link during power transmission. Whether it is the power transmitted from the servo motor through the reducer and other components to drive the spline shaft to rotate, or the spline shaft further transmits the torque to the internal spline screw and other components connected to it, this stable rotation connection can avoid power loss and transmission errors caused by excessive friction or rotation jamming, thereby ensuring the continuity and accuracy of power transmission of the entire lifting mechanism.

[0014] A further improvement of the technical solution of the utility model is that it also includes a lower guide column and a hollow guide column, the lower guide column is inserted into the hollow guide column, and the hollow guide column is both a guide column and a guide sleeve.

[0015] The above-mentioned technical solution is adopted, in which the lower guide column is inserted into the interior of the hollow guide column, so that the hollow guide column constrains the movement of the lower guide column from both the internal and external directions. The hollow guide column itself has a certain axial direction and geometric shape. As a guide column, it provides an external guide reference for the lower guide column, guiding the lower guide column to move linearly along its axial direction. As a guide sleeve, its internal hollow structure adapts to the shape of the lower guide column, further limiting the range of motion of the lower guide column from the inside, ensuring that the lower guide column can only slide smoothly in its limited axial direction, minimizing the occurrence of lateral deviation, swinging, and other situations in the lower guide column that affect the movement accuracy, making the entire movement process highly accurate.

[0016] A further improvement of the technical solution of the present utility model is that a multi-layer guide structure is formed between the lower guide column, the hollow guide column, the middle guide square tube and the upper guide square tube.

[0017] The above technical solution is adopted, in which each layer of the guide structure plays a key guiding role for the movable parts inside the lifting mechanism during its operation. Looking from the bottom up, the lower guide column provides accurate linear motion guidance for the hollow guide column, so that the hollow guide column can only slide along the predetermined axial direction. Then, the hollow guide column constrains the movement of the middle guide square tube to ensure the linearity of its motion trajectory. Finally, the middle guide square tube further guides the upper guide square tube to perform linear lifting and lowering motion. Through such progressive layer-by-layer guide constraints, the possibility of lateral deviation, swinging, etc. of each component during the lifting process can be greatly reduced, so that the entire lifting action is strictly carried out in the vertical direction, thereby accurately achieving the preset height adjustment and meeting the requirements of high-precision lifting. It is particularly suitable for application scenarios such as precision processing equipment and high-precision measuring instruments that have strict requirements on height positioning accuracy.

[0018] A further improvement of the technical solution of the utility model is that it also includes a robot mounting plate and an upper support column, the robot mounting plate is fixedly connected to the upper support column, and the upper support column is slidably connected to the internal spline screw.

[0019] With this technical solution, the internal spline screw, through its sliding connection with the upper support column, smoothly transmits power to the upper support column during rotation, thereby driving the entire mounting structure and lifting mechanism to rise and fall. This connection method effectively avoids vibration and jamming caused by factors such as uneven power transmission and unstable fit between components, ensuring a smooth and stable lifting process. This helps protect the precision components within the lifting mechanism and extends their service life. It also ensures that the lifting mechanism will not experience operational errors due to unstable movement during operation.

[0020] A further improvement of the technical solution of the utility model is that it also includes a sliding block, which is slidably connected to the lower guide square tube.

[0021] The above-mentioned technical solution, in which the lower guide square tube has a defined geometry and axial orientation, provides a clear guide for the movement of the slider after it is slidably connected to it. The slider can only slide in a straight line along the axial direction of the lower guide square tube, avoiding random lateral deviation, swinging, and other instabilities during movement. This ensures that the slider's motion trajectory meets the design expectations and moves precisely in the predetermined direction. This is crucial for other associated components to operate according to precise requirements, helping to improve the operating accuracy of the entire system.

[0022] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0023] The utility model provides a high-precision lifting mechanism utilizing threaded transmission and telescopic extension. Each transmission component utilizes a self-lubricating and sealed lubrication design. The internal structure of these components incorporates a medium or structure that continuously provides lubrication. This lubrication method ensures that the transmission components maintain a low coefficient of friction over extended periods of use. This reduces friction-induced wear, heat generation, and energy loss, effectively extending the service life of each transmission component. Whether it is the dual-threaded transmission between the internal drive screw and the internal splined lead screw, the rotation of the splined shaft within the bearing seat, or the meshing transmission between the synchronous belt and the synchronous pulley, all components maintain excellent operating conditions over a long period of time, eliminating the need for frequent maintenance operations such as manual lubrication and impurity cleaning. This significantly reduces maintenance costs and labor, ensures continuous and stable operation of the entire lifting mechanism, reduces maintenance-related downtime, and improves equipment efficiency. The servo motor achieves a highly optimized power transmission chain through the combination of a reducer and synchronous belt drive. The reducer, with its precise gear ratio design, accurately converts the servo motor's high-speed, low-torque output into a low-speed, high-torque output suitable for the lifting mechanism. During this process, the gears inside the reducer undergo precision machining and strict assembly technology, ensuring accuracy and stability when changing speed and torque, and avoiding fluctuations and losses during power transmission.

[0024] Compared to a single thread, the double-thread structure converts rotary motion into linear motion, offering finer displacement adjustment capabilities. The tight coordination of the two lead screws through the double threads produces extremely precise axial linear displacement for each rotation angle. This allows for precise control of lift height down to the smallest increments, meeting the stringent height adjustment requirements of precision operations. While errors inevitably arise during the transmission process due to machining accuracy and assembly, the unique structural characteristics of the double-thread transmission compensate for these errors to a certain extent. The meshing of each thread contributes to corrective transmission accuracy, preventing the accumulation of errors during the transmission process and ensuring high precision levels throughout the entire lifting motion. Furthermore, the even force distribution of the double thread ensures smooth torque transmission and reduces localized stress concentrations. This not only enhances transmission stability but also further ensures high-precision lifting performance, ensuring that the mechanism consistently meets the precision requirements of precision operations over long periods of time and repeated lifts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the internal side structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the internal front structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the side structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the top structure of the utility model;

[0030] Figure 5 It is a schematic diagram of the side sectional structure of the utility model;

[0031] Figure 6 It is a partially enlarged side sectional view of the present utility model;

[0032] In the figure: 1. Base; 2. Synchronous belt; 3. Synchronous pulley; 4. Reducer; 5. Servo motor; 6. Lower guide column; 7. Internal transmission screw; 8. Bearing seat; 9. Spline shaft; 10. Lower guide square tube; 11. Sliding block; 12. Internal spline screw; 13. Middle guide square tube; 14. Upper guide square tube; 15. Upper support column; 16. Robot mounting plate; 17. Hollow guide column. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the embodiments:

[0034] Example 1

[0035] like Figures 1-6 As shown, the utility model provides a high-precision lifting mechanism utilizing threaded transmission for extension and retraction, comprising a base 1, on which is mounted a reducer 4. One end of the reducer 4 is fixedly connected to a servo motor 5, and the other end is mounted to a synchronous pulley 3. The synchronous pulley 3 is driven by a synchronous belt 2. The synchronous belt 2 is rotatably connected to an internal transmission screw 7. The internal transmission screw 7 is rotatably connected to a spline shaft 9. The spline shaft 9 is rotatably connected to one end of an internal spline screw 12. The other end of the internal spline screw 12 is slidably connected to an upper guide square tube 14, which is in turn slidably connected to a middle guide square tube 13.

[0036] In this embodiment, the reducer 4 is fixedly connected to the servo motor 5, reducing the speed of the servo motor 5 output and increasing the output torque. As the power source of the entire lifting mechanism, the servo motor 5 can accurately control parameters such as speed, direction and output torque according to the control signal. High-precision angle control and speed adjustment are achieved, so that the lifting mechanism can be accurately positioned at the desired height during the lifting process, meeting the requirements for high precision. Utilizing the principle of screw transmission, the rotational motion is converted into axial linear motion, which in turn drives the connected guide square tube and other components to achieve lifting and lowering. It is the core component for achieving high-precision lifting actions.

[0037] One end of the upper guide square tube 14 is slidably connected to the internal spline screw 12, and can move linearly along the axial direction under the drive of the internal spline screw 12 to achieve height changes. At the same time, the upper guide square tube 14 is slidably connected to the middle guide square tube 13, which can provide guidance and support for it, ensuring that the upper guide square tube 14 moves smoothly in the predetermined direction during the lifting process, avoiding deflection and other situations, ensuring the accuracy of the entire lifting process and the stability of the mechanism operation, and ensuring the ultimate high-precision lifting effect.

[0038] In this embodiment, the base 1, serving as the foundation of the entire lifting mechanism, typically has a large contact area and sufficient weight to be securely placed on a mounting surface. When securely connected to the reducer 4, it provides a solid and reliable support for the reducer 4, enabling it to maintain a stable position during operation and prevent displacement or shaking due to factors such as vibration or torque reaction. This ensures that the gears and other transmission components within the reducer 4 can mesh properly and operate smoothly, extending the service life of the reducer 4 and maintaining its stable deceleration and torque transmission performance.

[0039] Preferably, it further includes a lower guide square tube 10 , which is slidably connected to the middle guide square tube 13 .

[0040] In this embodiment, in the entire high-precision lifting mechanism, the guide square tube plays a key role in ensuring that the lifting action is carried out in an accurate straight line. The lower guide square tube 10 is slidably connected to the middle guide square tube 13 to form a multi-guide structure. When the middle guide square tube 13 is driven by the internal spline screw 12 and other transmission components to perform lifting and lowering motion, the lower guide square tube 10 can further constrain the motion path of the middle guide square tube 13, so that it can only slide smoothly along a specific axial direction, avoiding lateral deviation, swinging, etc. of the middle guide square tube 13, thereby enhancing the stability of the entire guide system, ensuring that the lifting action is carried out accurately and smoothly, and helping to achieve the high-precision lifting function required by the mechanism.

[0041] Preferably, it also includes a bearing seat 8, the platform between the middle section and the lower section of the bolt is fixedly connected to the bearing seat 8, the bearing seat 8 is rotatably connected to the spline shaft 9, and the bearing seat 8 provides a support point for the spline shaft 9, so that the spline shaft 9 maintains a vertical spatial posture.

[0042] In this embodiment, the spline shaft 9 serves to connect the inner transmission screw 7 and the inner spline screw 12. The spline shaft 9 is rotatably connected to the inner transmission screw 7 and penetrates into the inner spline screw 12. The outer part of the inner spline screw 12 is connected to the screw nut, and the screw nut is fixedly connected to the middle platform. When the inner transmission screw 7 rotates, the spline shaft 9 rotates to drive the inner spline screw 12 to rotate. The rotation of the inner spline screw 12 drives the screw nut to rotate, and the rotation of the screw nut drives the middle platform to move up and down. This connection method can transmit torque, ensure the effective transmission of power, and allow the inner spline screw 12 to move axially relative to the spline shaft 9. This connection method is very critical for realizing the telescopic movement of the screw and the lifting function of the entire mechanism.

[0043] When the lifting mechanism carries a heavy object and performs a lifting action, the spline shaft 9 will be subjected to various loads such as corresponding axial force and radial force. The bearing seat 8 serves as a support point and can reasonably disperse and transmit these forces to the base 1. The bearing seat 8 relies on its own structural strength and stable installation method to bear the load on the spline shaft 9, preventing the spline shaft 9 from bending, deformation and other damage due to excessive force, ensuring that the spline shaft 9 can operate stably and reliably during long-term use, extending the service life of the spline shaft 9 and the entire transmission component system, while also ensuring the structural safety and reliability of the entire lifting mechanism.

[0044] Preferably, it further comprises a lower guide column 6 and a hollow guide column 17 , wherein the lower guide column 6 is inserted into the hollow guide column 17 , and the hollow guide column 17 serves as both a guide column and a guide sleeve.

[0045] In this embodiment, the lower guide post 6 is inserted into the hollow guide post 17, so that the hollow guide post 17 constrains the movement of the lower guide post 6 from both the inside and outside directions. The hollow guide post 17 itself has a defined axial direction and geometric shape. As a guide post, it provides an external guide reference for the lower guide post 6, guiding the lower guide post 6 to move linearly along its axial direction. As a guide sleeve, its internal hollow structure adapts to the outer shape of the lower guide post 6, further restricting the range of motion of the lower guide post 6 from the inside, ensuring that the lower guide post 6 can only slide smoothly in its limited axial direction. This minimizes the occurrence of lateral deviation and swing of the lower guide post 6, which affects the motion accuracy, and makes the entire motion process highly accurate.

[0046] This nested design enhances the stability of the overall structure. The lower guide column 6 and the hollow guide column 17 cooperate with each other to form a relatively stable combination. When the hollow guide column 17 is disturbed by external forces or vibrations caused by internal power transmission, the lower guide column 6 is tightly wrapped and constrained by it, which can help suppress the shaking of the hollow guide column 17 and restore it to a stable linear motion state as soon as possible. Similarly, if the lower guide column 6 tends to be unstable, the hollow guide column 17 can also provide support and restriction from both external and internal levels. The synergistic effect of the two ensures that the entire guide structure can remain stable in a complex working environment, thereby laying the foundation for the reliable operation of the entire mechanism and reducing problems such as component wear and precision reduction caused by structural instability.

[0047] Preferably, a multi-layer guide structure is formed between the lower guide column 6 , the hollow guide column 17 , the middle guide square tube 13 and the upper guide square tube 14 .

[0048] In this embodiment, during the operation of the lifting mechanism, each layer of the guide structure plays a key guiding role for the movable components inside it. Looking from the bottom up, the lower guide column 6 provides accurate linear motion guidance for the hollow guide column 17, so that the hollow guide column 17 can only slide along the predetermined axial direction. Then, the hollow guide column 17 constrains the movement of the middle guide square tube 13 to ensure the linearity of its motion trajectory. Finally, the middle guide square tube 13 further guides the upper guide square tube 14 to perform linear lifting motion. Through such a layer-by-layer progressive guidance constraint, the possibility of lateral deviation, swinging, etc. of each component during the lifting process can be greatly reduced, so that the entire lifting action is carried out strictly in the vertical direction, thereby accurately achieving the preset height adjustment and meeting the requirements of high-precision lifting. It is particularly suitable for application scenarios such as precision processing equipment and high-precision measuring instruments that have strict requirements on height positioning accuracy.

[0049] Preferably, the spline shaft 9 drives the internal transmission screw 7 to rotate synchronously, thereby driving the upper guide square tube 14 to move up and down.

[0050] In this embodiment, the spline shaft 9, due to its multi-point contact with the inner transmission screw 7 and its rational structural design, can evenly distribute the torque at the connection point between the two during the process of transmitting power to the inner transmission screw 7, thereby more evenly transmitting power to the inner transmission screw 7. When the inner transmission screw 7 drives the upper guide square tube 14 to move up and down, the force it bears is also relatively uniform, avoiding damage to components and increased wear caused by excessive local force.

[0051] Preferably, it further includes a robot mounting plate 16 and an upper support column 15 , wherein the robot mounting plate 16 is fixedly connected to the upper support column 15 , and the upper support column 15 is slidably connected to the internal spline screw 12 .

[0052] In this embodiment, the robot mounting plate 16 provides a flat and stable mounting surface. Its fixed connection method ensures that it can maintain a stable posture after installation, avoiding shaking, displacement, etc. due to an unstable mounting surface. The support column slides along the internal spline screw 12, and the axial direction of the internal spline screw 12 itself provides a precise guide for the lifting and lowering of the upper support column 15. The upper support column 15 can only move in a straight line along the axial direction of the screw, avoiding lateral deviation, swinging, etc. during the lifting process that affect the robot's posture and working accuracy. Moreover, the screw drive itself has a high precision and can accurately control the lifting and lowering displacement of the upper support column 15.

[0053] Preferably, it further includes a sliding block 11 , which is slidably connected to the lower guide square tube 10 .

[0054] In this embodiment, the lower guide square tube 10 has a defined geometric shape and axial orientation. Once the sliding block 11 is slidably connected to it, the lower guide square tube 10 provides a clear guide for the movement of the sliding block 11. The sliding block 11 can only slide linearly along the axial direction of the lower guide square tube 10, preventing instability such as random lateral deviation and swinging during movement. This ensures that the movement trajectory of the sliding block 11 meets the design expectations and accurately moves in the predetermined direction. This is crucial for other associated components to operate according to precise requirements and helps improve the operational accuracy of the entire system.

[0055] In this embodiment, the transmission between the internal transmission screw 7 and the internal spline screw 12 is carried out through a double thread, which ensures the high precision of the lifting movement and meets the needs of precision operation. The double thread can make the torque transmission more evenly distributed in the various meshing parts of the screw during transmission. Compared with a single thread, it increases the contact area and the number of force points, so that the force transmitted from the internal transmission screw 7 to the internal spline screw 12 can be more evenly dispersed, reducing the situation of local stress concentration. During long-term lifting operations, the wear of the screw will be more uniform, and it is less likely to cause problems such as thread damage and deformation due to local excessive force, thereby ensuring the long-term stable operation of the transmission system and improving the reliability of the entire lifting mechanism.

[0056] The following is a detailed description of the working principle of this high-precision lifting mechanism that utilizes threaded transmission and telescoping.

[0057] like Figure 1-Figure 3 As shown, the lifting mechanism uses a servo motor 5 as a power source. After the speed and torque are adjusted by the reducer 4, the power is transmitted to the inner transmission screw 7 through the synchronous belt 2 and the synchronous wheel 3. The rotation of the inner transmission screw 7 drives the middle guide square tube 13 to move up and down. The inner transmission screw 7 and the inner spline screw 12 use double thread transmission. At the same time, the inner transmission screw 7 drives the spline shaft 9 to rotate, and the rotation of the spline shaft 9 drives the inner spline screw 12 to rotate, thereby driving the upper guide square tube 14 to move up and down at the same time. The robot mounting plate 16 is fixedly connected to the upper support column 15 and the upper support column 15 is slidably connected to the inner spline screw 12, so as to realize the height adjustment of the load.

[0058] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A high-precision lifting mechanism utilizing screw drive and telescopic movement, characterized in that: The invention comprises a base (1), wherein a reducer (4) is mounted on the base (1); one end of the reducer (4) is fixedly connected to a servo motor (5), and the other end is mounted with a synchronous wheel (3); the synchronous wheel (3) is driven by a synchronous belt (2); the synchronous belt (2) is rotatably connected to an inner transmission screw (7); the inner transmission screw (7) is rotatably connected to a spline shaft (9); the spline shaft (9) is rotatably connected to one end of an inner spline screw (12), the other end of the inner spline screw (12) is slidably connected to an upper guide square tube (14), and the upper guide square tube (14) is slidably connected to a middle guide square tube (13).

2. The high-precision lifting mechanism utilizing threaded transmission and telescoping according to claim 1, characterized in that: It also includes a lower guide square tube (10), wherein the lower guide square tube (10) is slidably connected to the middle guide square tube (13).

3. The high-precision lifting mechanism utilizing threaded transmission and telescoping according to claim 1, characterized in that: It also includes a bearing seat (8), and the bearing seat (8) is rotatably connected to the spline shaft (9).

4. The high-precision lifting mechanism utilizing threaded transmission and telescoping according to claim 1, characterized in that: It also includes a lower guide column (6) and a hollow guide column (17), wherein the lower guide column (6) is inserted into the hollow guide column (17), and the hollow guide column (17) is both a guide column and a guide sleeve.

5. The high-precision lifting mechanism utilizing threaded transmission and telescoping according to claim 4, characterized in that: A multi-layer guide structure is formed between the lower guide column (6), the hollow guide column (17), the middle guide square tube (13) and the upper guide square tube (14).

6. The high-precision lifting mechanism utilizing threaded transmission and telescoping according to claim 1, characterized in that: It also includes a robot mounting plate (16) and an upper support column (15), wherein the robot mounting plate (16) is fixedly connected to the upper support column (15), and the upper support column (15) is slidably connected to the internal spline screw (12).

7. The high-precision lifting mechanism utilizing threaded transmission and telescoping according to claim 2, characterized in that: It also includes a sliding block (11), which is slidably connected to the lower guide square tube (10).

Images