Water cooling assembly and servo lead screw transmission system

Abstract

According to the water cooling assembly and the servo lead screw transmission system, a servo motor and an efficient water cooling assembly are integrated, the outer wall of the motor is tightly sleeved with a water cooling end cover, and a closed-loop cooling system is formed by a liquid guide channel in the water cooling end cover, a liquid extraction pump and a liquid storage tank. During working, cooling liquid flows through the water-cooling end cover to directly absorb heat of the motor, so that temperature rise is effectively controlled. Direct water cooling effectively reduces the temperature of the motor, reduces thermal deformation, and ensures the machining precision and stability of a machine tool; the stable temperature environment avoids precision reduction, and the part machining quality is improved; the service life of the motor is prolonged, and fault and downtime is reduced; the compact design is easy to install and maintain, production efficiency is improved, and energy consumption and mechanical abrasion are reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a water-cooled component and a servo lead screw transmission system. Background Technology

[0002] In the field of CNC machine tool technology, the motion accuracy of the feed axis directly determines the machining quality of the parts. To improve the precision of motion control, permanent magnet synchronous servo motors are widely used in the feed axis systems of CNC machine tools. These motors, with their high torque, low noise, and high efficiency, significantly improve the machining efficiency and accuracy of machine tools.

[0003] However, servo motors generate a significant amount of heat during operation. This heat is conducted to critical components such as the lead screw seat through connecting parts like flanges, causing thermal deformation. Thermal deformation not only leads to fluctuations in machine tool accuracy but also affects the machining precision of parts, and in severe cases, can even cause parts to be scrapped, threatening the stable operation of automated production lines.

[0004] To alleviate this problem, the industry currently widely adopts a warm-up running-in method for machine tools before processing. However, this method has many drawbacks, such as long preheating time leading to decreased production efficiency, increased energy consumption, and accelerated wear of machine tool mechanical parts. In addition, warm-up running-in does not fundamentally solve the problem of thermal deformation, and the machine tool may still experience a decrease in accuracy due to temperature fluctuations after long-term operation. Utility Model Content

[0005] The purpose of this invention is to provide a water-cooled component and a servo screw drive system that can improve the above-mentioned problems.

[0006] The embodiments of this utility model are implemented as follows:

[0007] In a first aspect, this application discloses a water-cooled assembly applied to a servo screw drive system, characterized in that it includes: a water-cooled end cap assembly, a liquid pump, a liquid storage tank, and a liquid guide pipe;

[0008] The water-cooled end cap assembly includes at least one water-cooled end cap, which is stacked between the servo motor and the lead screw seat in the servo screw drive system and is in direct or indirect contact with the servo motor and / or the lead screw seat.

[0009] The water-cooled end cap is provided with a receiving hole for fitting the outer wall of the servo motor, and the inside of the water-cooled end cap is provided with a liquid guiding channel surrounding the receiving hole.

[0010] The inlet of the pump is connected to the storage tank via a liquid guide pipe, the inlet of the liquid guide channel is connected to the outlet of the pump via a liquid guide pipe, and the outlet of the liquid guide channel is connected to the storage tank via a liquid guide pipe.

[0011] This application provides a water-cooled assembly for use in a servo screw drive system. Its core component is a water-cooled end cap located between the servo motor and the screw mount within the system, featuring a carefully designed internal liquid-guiding channel. These channels are connected to a pump and a reservoir via liquid-guiding pipes, forming a closed-loop cooling circulation system. When the servo motor operates, the coolant, propelled by the pump, flows through the liquid-guiding channels of the water-cooled end cap, directly absorbing and carrying away the heat generated by the servo motor, thereby effectively controlling the temperature rise of the servo motor. By directly water-cooling the servo motor, the operating temperature can be significantly reduced, minimizing thermal deformation caused by heat conduction to critical components such as the screw mount, thus ensuring the machining accuracy and stability of the machine tool.

[0012] In optional embodiments of this utility model, at least one of the following is included: the inner wall of the receiving hole is structurally matched with the outer wall of the servo motor, such that the water-cooled end cap is fitted onto the outer wall of the servo motor through the receiving hole; the inner diameter of the receiving hole is greater than or equal to the outer diameter of the servo motor.

[0013] In an optional embodiment of this utility model, the water-cooled end cap assembly includes at least two water-cooled end caps, which are stacked and arranged in a stacked manner. The receiving holes of the at least two water-cooled end caps are sequentially fitted onto the outer wall of the servo motor. The outlet of the liquid guiding channel of the water-cooled end cap is connected to the inlet of the liquid guiding channel of the adjacent water-cooled end cap through a liquid guiding pipe.

[0014] It is understandable that the design employing at least two stacked water-cooled end caps further enhances the cooling effect and applicability of the water-cooled components and servo screw drive system. The multi-layered water-cooling structure not only increases the contact area between the coolant and the outer wall of the servo motor but also improves the flow efficiency and heat exchange rate of the coolant, thereby more effectively controlling the temperature rise of the servo motor. The multi-layered water-cooled end caps can distribute the cooling effect more evenly, avoiding localized overheating and ensuring the overall temperature stability and consistency of the servo motor. Secondly, the enhanced cooling effect allows this component to be used with higher-power servo motors, meeting more complex and efficient processing requirements. Finally, the stacked design of the water-cooled end caps facilitates installation and disassembly, aiding in maintenance and replacement, and improving the system's reliability and maintainability.

[0015] In an optional embodiment of this utility model, each water-cooled end cap is provided with at least 4 screw holes, and when the at least two water-cooled end caps are stacked, the screw holes are aligned; the water-cooled end cap is fixed to the lead screw seat by screws passing through the screw holes.

[0016] In an optional embodiment of this utility model, the inner walls of the outlet and inlet of the liquid guiding channel are provided with a first thread, and the outer wall of the end of the liquid guiding tube is provided with a second thread that matches the first thread.

[0017] In an optional embodiment of this utility model, the inner wall of the liquid guiding channel is further provided with M protrusions, where M is a positive integer greater than 1.

[0018] It's understandable that multiple protrusions are designed on the inner wall of the coolant channel to increase the contact area between the coolant and the channel. This protrusion design improves cooling efficiency, allowing the coolant to more fully absorb heat from the servo motor, further reducing the servo motor temperature and ensuring long-term high-precision operation of the machine tool.

[0019] Secondly, this application also discloses a servo screw drive system, including: a servo motor, a screw holder, a screw, and a water-cooling assembly as described in any of the first aspects;

[0020] The lead screw base includes a motor interface end and a lead screw interface end. A first angular contact bearing is provided on the lead screw interface end. The lead screw passes through the first angular contact bearing and is connected to the rotating shaft of the servo motor provided on the motor interface end. The lead screw achieves radial movement under the drive of the servo motor.

[0021] The at least one water-cooled end cap is stacked and, after being fitted over the servo motor, is connected to the motor interface.

[0022] It is understood that this application discloses a servo screw drive system, which incorporates a water-cooling component to maintain a stable temperature environment during continuous machine tool operation. This avoids accuracy degradation caused by temperature fluctuations and improves the machining quality of parts. Furthermore, due to the efficient heat dissipation of the water-cooling component, the service life of the servo motor is extended, reducing malfunctions and downtime caused by servo motor overheating. Finally, this water-cooled servo motor assembly is compact, easy to install and maintain, not only improving production efficiency but also reducing energy consumption and wear on mechanical parts, providing a strong guarantee for the efficient and stable operation of CNC machine tools.

[0023] In an optional embodiment of this utility model, the servo motor has an outer wall protrusion at one end facing the motor interface end; the motor interface end has an opening for accommodating the servo motor; the inner walls of the opening and the accommodating hole are both provided with a stepped structure that matches the outer wall protrusion.

[0024] In an optional embodiment of this utility model, a lead screw bearing housing with a second angular contact bearing is further included, and the other end of the lead screw is disposed on the second angular contact bearing.

[0025] It is understandable that the introduction of a lead screw bearing housing equipped with a second angular contact bearing allows the other end of the lead screw to be stably supported on the second angular contact bearing, forming a double support structure with the first angular contact bearing at the motor interface end. This double support not only improves the stability and accuracy of the lead screw in radial motion but also effectively distributes the load and stress generated during operation, extending the service life of the lead screw and bearing. Furthermore, the second angular contact bearing helps reduce vibration and noise during high-speed operation, improving the overall smoothness of machine tool operation and machining quality. Simultaneously, this design increases the rigidity and vibration resistance of the machine tool, enabling it to better resist external interference and maintain stable machining accuracy during processing.

[0026] In an optional embodiment of this utility model, the lead screw is connected to the rotating shaft of the servo motor via a coupling.

[0027] It's understandable that a coupling is used to connect the lead screw and the servo motor's rotating shaft. As a crucial component in mechanical transmission, the type and performance of the coupling significantly impact the stability and accuracy of the transmission system. Considering the high requirements of CNC machine tools for transmission accuracy and rigidity, a rigid coupling is the preferred choice for connecting the lead screw and the servo motor's rotating shaft. Rigid couplings possess high torsional stiffness and torque transmission capacity, ensuring precise radial movement of the lead screw driven by the servo motor. Simultaneously, rigid couplings effectively reduce vibration and noise during transmission, improving the overall smoothness of the machine tool's operation. Besides rigid couplings, other types of couplings can be selected based on actual needs, such as flexible couplings or elastic couplings. Flexible couplings offer a certain degree of elasticity and vibration damping, absorbing and compensating for manufacturing errors, installation errors, and impacts and vibrations generated during operation between the servo motor and the lead screw. They are suitable for applications with slightly lower transmission accuracy requirements but higher vibration damping performance requirements. Flexible couplings, on the other hand, allow for larger deviations and displacements between the two shafts. They are suitable for applications where transmission accuracy and rigidity requirements are relatively low, but installation and adjustment convenience are highly important.

[0028] Beneficial effects:

[0029] This application provides a water-cooling component for a servo screw drive system. Its core component is a water-cooled end cap located between the servo motor and the screw mount in the servo screw drive system, with a carefully designed internal liquid guiding channel. These channels are connected to a liquid pump and a storage tank via liquid guide pipes, forming a closed-loop cooling circulation system. When the servo motor is operating, the coolant, driven by the liquid pump, flows through the liquid guiding channel of the water-cooled end cap, directly absorbing and carrying away the heat generated by the servo motor, thereby effectively controlling the temperature rise of the servo motor. By directly water-cooling the servo motor, the operating temperature of the servo motor can be significantly reduced, minimizing thermal deformation caused by heat conduction to critical components such as the screw mount, thus ensuring the machining accuracy and stability of the machine tool.

[0030] This application also provides a servo screw drive system that incorporates a water-cooling component. This allows the machine tool to maintain a stable temperature environment during continuous operation, preventing accuracy degradation due to temperature fluctuations and improving the machining quality of parts. Furthermore, the efficient heat dissipation of the water-cooling component extends the service life of the servo motor, reducing malfunctions and downtime caused by servo motor overheating. Finally, this water-cooled servo motor assembly is compact, easy to install and maintain, improving production efficiency, reducing energy consumption and wear on mechanical components, and providing strong support for the efficient and stable operation of CNC machine tools.

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of a water-cooling component provided in this application;

[0034] Figure 2 This is a cross-sectional schematic diagram of the water-cooled end cap provided in this application;

[0035] Figure 3 This is a structural schematic diagram of two adjacent water-cooled end caps provided in this application;

[0036] Figure 4 This is a schematic diagram of a liquid guiding channel provided in this application;

[0037] Figure 5 This is a schematic diagram of the structure of a water-cooled component and a servo screw drive system provided in this application;

[0038] Figure 6 yes Figure 5 A partially disassembled schematic diagram of the water-cooling components and servo screw drive system shown;

[0039] Figure 7 This is a disassembled schematic diagram of the motor interface end, motor, and water-cooled end cover provided in this application. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0041] Firstly, such as Figure 1 and Figure 2 As shown, this application discloses a water-cooled assembly applied to a servo screw drive system, characterized in that it includes: a water-cooled end cap assembly, a liquid pump 4, a liquid storage tank 5, and a liquid guide pipe 6.

[0042] like Figure 5 As shown, the above-mentioned water-cooled end cap assembly includes at least one water-cooled end cap 7, which is stacked between the servo motor 1 and the lead screw seat 2 in the servo screw drive system, and is in direct or indirect contact with the servo motor 1 and / or the lead screw seat 2.

[0043] like Figure 2 As shown, the water-cooled end cap 7 is provided with a receiving hole 71 for fitting the outer wall of the servo motor 1, and a liquid guiding channel 72 is provided inside the water-cooled end cap 7 surrounding the receiving hole 71.

[0044] The inlet of the pump 4 is connected to the storage tank 5 through the liquid guide pipe 6, the inlet of the liquid guide channel 72 is connected to the outlet of the pump 4 through the liquid guide pipe 6, and the outlet of the liquid guide channel 72 is connected to the storage tank 5 through the liquid guide pipe 6.

[0045] This application provides a water-cooled assembly for use in a servo screw drive system. Its core component is a water-cooled end cap 7 located between the servo motor 1 and the screw seat 2 within the servo screw drive system. The end cap 7 has a carefully designed internal liquid guiding channel 72. These channels are connected to a liquid pump 4 and a liquid storage tank 5 via liquid guiding pipes 6, forming a closed-loop cooling circulation system. When the servo motor 1 is operating, the coolant, driven by the liquid pump 4, flows through the liquid guiding channel 72 of the water-cooled end cap 7, directly absorbing and carrying away the heat generated by the servo motor 1, thereby effectively controlling the temperature rise of the servo motor 1. By directly water-cooling the servo motor 1, the operating temperature of the servo motor 1 can be significantly reduced, minimizing thermal deformation caused by heat conduction to critical components such as the screw seat 2, thus ensuring the machining accuracy and stability of the machine tool.

[0046] In optional embodiments of this utility model, at least one of the following is included: the inner wall of the receiving hole 71 is structurally matched with the outer wall of the servo motor 1, so that the water-cooled end cap 7 is fitted onto the outer wall of the servo motor 1 through the receiving hole 71; the inner diameter of the receiving hole 71 is greater than or equal to the outer diameter of the servo motor 1.

[0047] In an optional embodiment of this utility model, the water-cooled end cap assembly includes at least two water-cooled end caps, which are stacked on top of each other, and the receiving holes of the at least two water-cooled end caps are sequentially fitted onto the outer wall of the servo motor; the outlet of the liquid guiding channel of the water-cooled end cap is connected to the inlet of the liquid guiding channel of the adjacent water-cooled end cap through a liquid guiding pipe.

[0048] like Figure 3 As shown, the water-cooled end cap assembly includes a first water-cooled end cap 91 and a second water-cooled end cap 92 stacked together. The first receiving hole of the first water-cooled end cap 91 and the second receiving hole of the second water-cooled end cap 92 are used to sequentially fit onto the outer wall of the servo motor. The outlet 910 of the liquid guiding channel of the first water-cooled end cap 91 is connected to the inlet 920 of the liquid guiding channel of the second water-cooled end cap 92 through a liquid guiding pipe 6. The arrow in the figure indicates the direction of liquid flow.

[0049] It is understandable that the design employing at least two stacked water-cooled end caps further enhances the cooling effect and applicability of the water-cooled components and servo screw drive system. The multi-layered water-cooling structure not only increases the contact area between the coolant and the outer wall of the servo motor but also improves the flow efficiency and heat exchange rate of the coolant, thereby more effectively controlling the temperature rise of the servo motor. The multi-layered water-cooled end caps can distribute the cooling effect more evenly, avoiding localized overheating and ensuring the overall temperature stability and consistency of the servo motor. Secondly, the enhanced cooling effect allows this component to be used with higher-power servo motors, meeting more complex and efficient processing requirements. Finally, the stacked design of the water-cooled end caps facilitates installation and disassembly, aiding in maintenance and replacement, and improving the system's reliability and maintainability.

[0050] In an optional embodiment of this utility model, each water-cooled end cover 7 is provided with at least 4 screw holes, and when at least two water-cooled end covers 7 are stacked, the screw holes are aligned; the water-cooled end cover 7 is fixed to the motor interface end 2121 by screws passing through the screw holes.

[0051] In an optional embodiment of this invention, the inner walls of both the outlet and inlet of the liquid guiding channel 72 are provided with a first thread, and the outer wall of the end of the liquid guiding tube 6 is provided with a second thread that matches the first thread. It can be understood that the liquid guiding tube 6 can be fixed to the outlet or inlet of the corresponding liquid guiding channel 72 by the matching thread.

[0052] In optional embodiments of this utility model, such as Figure 4 As shown, the inner wall of the liquid guiding channel 72 is also provided with M protrusions 1110, where M is a positive integer greater than 1.

[0053] It is understandable that multiple protrusions 1110 are set on the inner wall of the fluid guiding channel 72 to increase the contact area between the coolant and the channel. The protrusion 1110 design improves cooling efficiency, allowing the coolant to more fully absorb the heat of the servo motor 1, further reducing the temperature of the servo motor 1, and ensuring long-term high-precision operation of the machine tool.

[0054] Secondly, such as Figure 5 and Figure 6 As shown, this application also discloses a servo screw drive system, including: a servo motor 1, a screw holder 2, a screw, and a water-cooling assembly as described in any of the first aspects.

[0055] The lead screw base 2 includes a motor interface end 21 and a lead screw interface end 22. A first angular contact bearing 23 is provided on the lead screw interface end 22. The lead screw passes through the first angular contact bearing 23 and is connected to the rotating shaft of the servo motor 1 provided on the motor interface end 21. The lead screw achieves radial movement under the drive of the servo motor 1.

[0056] At least one water-cooled end cap 7 is stacked and connected to the motor interface 21 after being fitted onto the servo motor 1.

[0057] It is understood that this application discloses a servo screw drive system, which incorporates a water-cooling component to maintain a stable temperature environment during continuous machine tool operation. This avoids accuracy degradation caused by temperature fluctuations and improves the machining quality of parts. Furthermore, due to the efficient heat dissipation of the water-cooling component, the service life of the servo motor 1 is extended, reducing malfunctions and downtime caused by overheating of the servo motor 1. Finally, this water-cooled servo motor 1 component is compact in design and easy to install and maintain, not only improving production efficiency but also reducing energy consumption and wear on mechanical parts, providing a strong guarantee for the efficient and stable operation of CNC machine tools.

[0058] In optional embodiments of this utility model, such as Figure 7 As shown, the servo motor 1 has an outer wall protrusion 11 at the end facing the motor interface end 21; the motor interface end 21 has an opening 24 for accommodating the servo motor 1; the inner wall of the opening 24 is provided with a first step structure 25 that matches the outer wall protrusion 11, and the inner wall of the receiving hole 71 is provided with a second step structure 26 that matches the outer wall protrusion 11; the water-cooled end cover 7 is fitted onto the servo motor 1 and then connected to the motor interface end 21.

[0059] In optional embodiments of this utility model, such as Figure 5 As shown, it also includes a lead screw bearing housing 9 with a second angular contact bearing 27, and the other end of the lead screw 3 is mounted on the second angular contact bearing 27.

[0060] It is understandable that the introduction of the lead screw bearing housing 9 equipped with the second angular contact bearing 27 allows the other end of the lead screw 3 to be stably supported on the second angular contact bearing 27, forming a double support structure with the first angular contact bearing 23 at the motor interface end 21. This double support not only improves the stability and accuracy of the lead screw 3 in radial motion, but also effectively disperses the load and stress generated by the lead screw 3 during operation, extending the service life of the lead screw 3 and the bearing. In addition, the installation of the second angular contact bearing 27 also helps to reduce the vibration and noise of the lead screw 3 during high-speed operation, improving the overall smoothness of machine tool operation and machining quality. At the same time, this design also increases the rigidity and vibration resistance of the machine tool, enabling the machine tool to better resist external interference and maintain stable machining accuracy during machining.

[0061] In optional embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the lead screw 3 is connected to the rotating shaft of the servo motor 1 via a coupling 30.

[0062] It is understandable that a coupling is used to connect the lead screw 3 and the rotating shaft of the servo motor 1. As a crucial component in mechanical transmission, the type and performance of the coupling significantly impact the stability and accuracy of the transmission system. Considering the high requirements of CNC machine tools for transmission accuracy and rigidity, a rigid coupling is the preferred choice for connecting the lead screw 3 and the rotating shaft of the servo motor 1. Rigid couplings possess high torsional stiffness and torque transmission capacity, ensuring precise radial movement of the lead screw 3 under the drive of the servo motor 1. Simultaneously, rigid couplings effectively reduce vibration and noise during transmission, improving the overall smoothness of the machine tool's operation. Besides rigid couplings, other types of couplings can be selected based on actual needs, such as flexible couplings or elastic couplings. Flexible couplings possess a certain degree of elasticity and vibration damping capability, absorbing and compensating for manufacturing errors, installation errors, and impacts and vibrations generated during operation between the servo motor 1 and the lead screw 3. They are suitable for applications with slightly lower requirements for transmission accuracy but higher requirements for vibration damping performance. Flexible couplings, on the other hand, allow for larger deviations and displacements between the two shafts. They are suitable for applications where transmission accuracy and rigidity requirements are relatively low, but installation and adjustment convenience are highly important.

[0063] The terms "first," "second," "first," or "second" as used in the various embodiments of this disclosure may modify various components regardless of their order and / or importance, but these terms do not limit the corresponding components. The above terms are configured only for the purpose of distinguishing an element from other elements. For example, "first user equipment" and "second user equipment" refer to different user equipments, although both are user equipment. For example, without departing from the scope of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0064] When a component (e.g., a first component) is referred to as being "(operably or communicatively) coupled" or "(operably or communicatively) coupled to" or "connected to" another component (e.g., a second component), it should be understood that the first component is directly connected to the second component or that the first component is indirectly connected to the second component via yet another component (e.g., a third component). Conversely, it can be understood that when a component (e.g., a first component) is referred to as being "directly connected" or "directly coupled" to another component (the second component), no component (e.g., a third component) is inserted between the two.

[0065] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0066] The above description is merely an optional embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water-cooled component, applied to a servo screw drive system, characterized in that, include: Water-cooled end cap assembly, liquid pump, liquid storage tank and liquid guide pipe; The water-cooled end cap assembly includes at least one water-cooled end cap, which is stacked between the servo motor and the lead screw seat in the servo screw drive system and is in direct or indirect contact with the servo motor and / or the lead screw seat. The water-cooled end cap is provided with a receiving hole for fitting the outer wall of the servo motor, and the inside of the water-cooled end cap is provided with a liquid guiding channel surrounding the receiving hole. The inlet of the pump is connected to the storage tank via a liquid guide pipe, the inlet of the liquid guide channel is connected to the outlet of the pump via a liquid guide pipe, and the outlet of the liquid guide channel is connected to the storage tank via a liquid guide pipe.

2. The water-cooled assembly according to claim 1, characterized in that, Includes at least one of the following: The inner wall of the receiving hole matches the structure of the outer wall of the servo motor, so that the water-cooled end cap is fitted onto the outer wall of the servo motor through the receiving hole; The inner diameter of the receiving hole is greater than or equal to the outer diameter of the servo motor.

3. The water-cooling assembly according to claim 1, characterized in that, The water-cooled end cap assembly includes at least two water-cooled end caps, which are stacked on top of each other, and the receiving holes of the at least two water-cooled end caps are sequentially fitted onto the outer wall of the servo motor. The outlet of the liquid guiding channel of the water-cooled end cap is connected to the inlet of the liquid guiding channel of the adjacent water-cooled end cap through a liquid guiding pipe.

4. The water-cooled assembly according to claim 3, characterized in that, Each of the water-cooled end caps is provided with at least 4 screw holes, and when the at least two water-cooled end caps are stacked, the screw holes are aligned. The water-cooled end cap is fixed to the lead screw seat by passing a screw through the screw hole.

5. The water-cooling assembly according to claim 3, characterized in that, The inner walls of the outlet and inlet of the liquid guiding channel are provided with a first thread, and the outer wall of the end of the liquid guiding tube is provided with a second thread that matches the first thread.

6. The water-cooling assembly according to any one of claims 1 to 5, characterized in that, The inner wall of the liquid guiding channel is also provided with M protrusions, where M is a positive integer greater than 1.

7. A servo lead screw drive system, characterized in that, include: Servo motor, lead screw holder, lead screw, and water-cooling assembly as described in any one of claims 1 to 6; The lead screw base includes a motor interface end and a lead screw interface end. A first angular contact bearing is provided on the lead screw interface end. The lead screw passes through the first angular contact bearing and is connected to the rotating shaft of the servo motor provided on the motor interface end. The lead screw achieves radial movement under the drive of the servo motor. The at least one water-cooled end cap is stacked and, after being fitted over the servo motor, is connected to the motor interface.

8. The servo lead screw transmission system according to claim 7, characterized in that, The servo motor has an outer wall protrusion at one end facing the motor interface. The motor interface end is provided with an opening for accommodating the servo motor; The inner walls of both the opening and the receiving hole are provided with stepped structures that match the protrusions on the outer wall.

9. The servo lead screw transmission system according to claim 7, characterized in that, It also includes a lead screw bearing housing with a second angular contact bearing, the other end of the lead screw being disposed on the second angular contact bearing.

10. The servo lead screw drive system according to any one of claims 7 to 9, characterized in that, The lead screw is connected to the rotating shaft of the servo motor via a coupling.

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