A screw cooling system

Abstract

This application discloses a lead screw cooling system, comprising a lead screw mechanism, a lead screw nut cooling sleeve, a fixed-end bearing housing, a motor-end bearing housing, and a motor pad. The lead screw nut cooling sleeve includes a first liquid cooling channel, the fixed-end bearing housing includes a second liquid cooling channel, the motor-end bearing housing includes a third liquid cooling channel, and the motor pad includes a fourth liquid cooling channel. The first liquid cooling channel is connected in parallel with the second, third, and fourth liquid cooling channels. This application achieves rapid cooling of the lead screw body through the lead screw nut cooling sleeve, the fixed-end bearing housing, and the motor-end bearing housing, avoiding deformation during lead screw machining and thus improving the machining accuracy of the lead screw. Furthermore, the motor pad cools the heat generated by the motor, preventing the motor's heat from affecting the machining accuracy of the lead screw.

Description

Technical Field

[0001] This application relates to the field of lead screw cooling technology, and more specifically, to a lead screw cooling system. Background Technology

[0002] Ball screw assemblies are high-precision and high-stability transmission devices. However, in some high-precision equipment, under long-term operation, the screw may elongate to a certain extent due to thermal expansion and contraction, which in turn affects the running accuracy of the ball screw assembly.

[0003] A lead screw cooling system is a device used to control the operating temperature of a lead screw. In many high-precision mechanical devices, the operating accuracy of the lead screw and nut is crucial to the overall performance of the equipment, and temperature changes significantly affect the accuracy of the lead screw and nut. The lead screw cooling system removes the heat generated by the operation of the lead screw and nut through a cooling medium, thereby stabilizing the temperature of the lead screw and nut.

[0004] Existing lead screw cooling systems typically use hollow lead screws, cooling them by circulating coolant inside. For example, patent application number 202410565848.2 discloses a lead screw constant-temperature cooling system, including a lead screw assembly, a drive motor, and a liquid chiller. The lead screw assembly includes a lead screw and a lead screw nut rotatably sleeved on the outside of the lead screw, with a lead screw through-hole along its axial direction. The drive motor includes a motor shaft that passes through the motor, with a shaft through-hole along its axial direction. The lead screw is sealed to the motor shaft, and the lead screw through-hole communicates with the shaft through-hole. The liquid chiller allows coolant to flow through the lead screw through-hole and the shaft through-hole. The liquid chiller allows coolant to flow through the lead screw through-hole and the shaft through-hole, carrying away the heat generated by the high-speed rotation of the motor and the heat generated by the friction between the lead screw nut and the lead screw, thus maintaining the lead screw at a constant temperature.

[0005] Because the lead screw needs to rotate during operation, the coolant circulation pipeline needs to be rotated and sealed with the lead screw, which increases the overall manufacturing difficulty of the device, reduces its service life, and significantly increases the manufacturing cost.

[0006] Therefore, existing technologies need to be improved. Summary of the Invention

[0007] The purpose of this application is to provide a lead screw cooling system, which aims to solve the technical problem of how to reduce the impact of thermal expansion and contraction of the lead screw on the accuracy of the lead screw in the prior art.

[0008] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0009] This application provides a lead screw cooling system, comprising:

[0010] A lead screw mechanism, comprising a lead screw body, a lead screw nut, a lead screw motor, a lead screw motor end, and a lead screw fixed end. One end of the lead screw body is rotatably connected to the lead screw motor end, and the other end is rotatably connected to the lead screw fixed end. The lead screw nut is mounted on the lead screw body, and the lead screw motor is drivenly connected to the lead screw body.

[0011] A lead screw nut cooling sleeve, the lead screw nut cooling sleeve including a first liquid cooling channel, the lead screw nut cooling sleeve being sleeved on the lead screw nut, the first liquid cooling channel being used to cool the lead screw nut;

[0012] A fixed-end bearing housing, the fixed-end bearing housing including a second liquid cooling channel, the fixed-end bearing housing being installed on the fixed end of the lead screw, the second liquid cooling channel being used to cool the fixed end of the lead screw;

[0013] A motor end bearing housing, the motor end bearing housing including a third liquid cooling channel, the motor end bearing housing being installed on the end of the lead screw motor, the third liquid cooling channel being used to cool the end of the lead screw motor;

[0014] A motor pad, the motor pad including a fourth liquid cooling channel, the motor pad being connected to the lead screw motor, the fourth liquid cooling channel being used to cool the lead screw motor, and the first liquid cooling channel being connected in parallel with the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel respectively.

[0015] In one embodiment, the nut cooling sleeve further includes:

[0016] The first integrated cooling housing has a first liquid cooling channel inside it. The first integrated cooling housing defines a first hollow cavity for embedding a lead screw nut. The first integrated cooling housing has an opening that extends through the entire first integrated cooling housing along its axial direction.

[0017] Two fastening parts are located on both sides of the opening, and the two fastening parts are used to close the opening;

[0018] The first liquid inlet is disposed in the first integrated cooling housing and is used to communicate with the first liquid cooling channel.

[0019] The first liquid outlet is disposed in the first integrated cooling housing and is used to communicate with the first liquid cooling channel.

[0020] In one embodiment, the first liquid cooling channel includes a left liquid cooling channel and a right liquid cooling channel communicating with the left liquid cooling channel. The left liquid cooling channel is located on the left side of the first integrated cooling housing, and the right liquid cooling channel is located on the right side of the first integrated cooling housing.

[0021] In one embodiment, the left liquid cooling channel includes a plurality of sequentially connected S-shaped channels; the right liquid cooling channel includes a plurality of sequentially connected S-shaped channels.

[0022] In one embodiment, the fastening part includes:

[0023] A fastening body extends radially outward along the first integrated cooling housing;

[0024] A first mounting hole is formed in the fastening body and is used for fixing a bolt to close the opening.

[0025] A gradient connection portion is provided, which is connected to the fastening body and the first integrated cooling housing. The cross-sectional dimensions of the gradient connection portion gradually increase from the first integrated cooling housing towards the opening side.

[0026] In one embodiment, the fixed-end bearing housing further includes:

[0027] The second integrated cooling housing defines a second hollow cavity, which is used to connect the bearing at the fixed end of the lead screw. The second integrated cooling housing is provided with a second liquid cooling channel surrounding the second hollow cavity.

[0028] The second mounting portion extends outward from the second integrated cooling housing and is provided with a plurality of second mounting holes.

[0029] The second liquid inlet is disposed in the second integrated cooling housing and is used to communicate with the second liquid cooling channel;

[0030] The second liquid outlet is disposed in the second integrated cooling housing and is used to communicate with the second liquid cooling channel.

[0031] In one embodiment, the motor end bearing housing further includes:

[0032] The third integrated cooling housing defines a third hollow cavity, which is used to connect the bearing at the end of the lead screw motor. The third integrated cooling housing is provided with a third liquid cooling channel surrounding the third hollow cavity.

[0033] The third housing fixing seat is sleeved on the third integrated cooling housing and is used to fix the lead screw motor end.

[0034] In one embodiment, the third integrated cooling housing includes:

[0035] A third tubular structure is embedded in the third housing fixing seat and defines the third hollow cavity. The third tubular structure has a third liquid cooling channel surrounding the third hollow cavity.

[0036] The third base plate is disposed at the bottom of the third tubular structure and is integrally formed with the third tubular structure;

[0037] The third liquid inlet is disposed on the third base plate and is used to communicate with the third liquid cooling channel;

[0038] The third liquid outlet is disposed on the third base plate and is used to communicate with the third liquid cooling channel.

[0039] In one embodiment, the third housing mounting base includes:

[0040] A mounting base body defines a fourth hollow cavity, which is used to embed and install the third integrated cooling housing;

[0041] The fourth mounting part is located on the left and right sides of the fixed base body. The fourth mounting part extends outward from the fixed base body and is provided with a plurality of fourth mounting holes for fixing the lead screw motor end.

[0042] A motor connection frame is disposed on the side of the fixed base body away from the fourth hollow cavity. The motor connection frame abuts against the lead screw motor via the motor pad and is used to install the motor pad.

[0043] In one embodiment, the motor pad includes:

[0044] The fifth integrated cooling frame defines a fifth hollow cavity, which is used to install the coupling on the lead screw motor, and the fifth integrated cooling frame is provided with the fourth liquid cooling channel.

[0045] The first mounting and fitting surface is disposed on the fifth integrated cooling frame and is used to fit and connect with the motor connection frame.

[0046] The second mounting and fitting surface is located on the side of the fifth integrated cooling frame away from the first mounting and fitting surface. The second mounting and fitting surface includes a second mounting plane and a second stepped surface. The second mounting plane is located around the second stepped surface. Both the second mounting plane and the second stepped surface are used to fit and connect with the lead screw motor.

[0047] The fourth liquid inlet is disposed on the fifth integrated cooling frame and is located on the vertical surface between the first mounting surface and the second mounting surface. The fourth liquid inlet is used to communicate with the fourth liquid cooling channel.

[0048] The fourth liquid outlet is disposed on the fifth integrated cooling frame and is located on the vertical surface between the first mounting surface and the second mounting surface. The fourth liquid outlet is used to communicate with the fourth liquid cooling channel.

[0049] The beneficial effects of the lead screw cooling system provided in this application are at least as follows:

[0050] This application discloses a lead screw cooling system, comprising a lead screw mechanism, a lead screw nut cooling sleeve, a fixed end bearing seat, a motor end bearing seat, and a motor pad. The lead screw mechanism includes a lead screw body, a lead screw nut, a lead screw motor, a lead screw motor end, and a lead screw fixed end. One end of the lead screw body is rotatably connected to the lead screw motor end, and the other end is rotatably connected to the lead screw fixed end. The lead screw nut is mounted on the lead screw body, and the lead screw motor is driven by the lead screw body. The lead screw nut cooling sleeve includes a first liquid cooling channel, and the lead screw nut cooling sleeve is sleeved on the lead screw nut. The first liquid cooling channel is used to cool the lead screw. The screw nut, the fixed-end bearing housing includes a second liquid-cooling channel, the fixed-end bearing housing is installed on the fixed end of the screw, and the second liquid-cooling channel is used to cool the fixed end of the screw. The motor-end bearing housing includes a third liquid-cooling channel, the motor-end bearing housing is installed on the motor end of the screw, and the third liquid-cooling channel is used to cool the motor end of the screw. The motor pad includes a fourth liquid-cooling channel, the motor pad is connected to the screw motor, and the fourth liquid-cooling channel is used to cool the screw motor. The first liquid-cooling channel is connected in parallel with the second, third, and fourth liquid-cooling channels. This application achieves rapid cooling of the screw body through the screw nut cooling sleeve, the fixed-end bearing housing, and the motor-end bearing housing, avoiding deformation during the screw machining process, thereby improving the machining accuracy of the screw. Furthermore, the motor pad can cool the heat generated by the motor, preventing the motor heat from affecting the machining accuracy of the screw. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a schematic diagram of the screw cooling system provided in an embodiment of this application;

[0053] Figure 2 This is a schematic diagram of the disassembled structure of the lead screw cooling system provided in the embodiments of this application;

[0054] Figure 3 This is a schematic diagram of the structure of the nut cooling sleeve provided in the embodiments of this application;

[0055] Figure 4 A schematic diagram of a specific embodiment of the first liquid cooling channel provided in this application;

[0056] Figure 5 This is a schematic diagram of the structure of the fixed-end bearing housing provided in an embodiment of this application;

[0057] Figure 6 This is a schematic diagram of the disassembled structure of the motor end bearing housing provided in an embodiment of this application.

[0058] The following are the labeling elements in the figure:

[0059] 100. Lead screw mechanism; 200. Lead screw nut cooling jacket; 300. Fixed end bearing housing; 400. Motor end bearing housing; 500. Motor pad; 110. Lead screw body; 120. Lead screw nut; 130. Lead screw motor; 140. Lead screw motor end; 150. Lead screw fixed end; 111. Bearing; 112. Impact block; 131. Coupling; 210. First integrated cooling housing; 220. First liquid cooling channel; 23. 0. First hollow cavity; 240. Fastening part; 250. First liquid inlet; 260. First liquid outlet; 211. Opening; 221. Left liquid cooling channel; 222. Right liquid cooling channel; 223. S-shaped channel; 241. Fastening body; 242. First mounting hole; 243. Gradient connection part; 310. Second integrated cooling shell; 320. Second liquid cooling channel; 330. Second hollow cavity; 340. Second mounting... Mounting components; 341, Second mounting hole; 350, Second liquid inlet; 360, Second liquid outlet; 311, Fixing cap; 312, Fixing nut; 410, Third integrated cooling housing; 420, Third liquid cooling channel; 430, Third hollow cavity; 440, Third housing mounting base; 411, Third tubular structure; 412, Third base plate; 413, Third liquid inlet; 414, Third liquid outlet; 441, Fixing... 442. Fixed base body; 443. Fourth mounting part; 444. Motor connection frame; 445. Fourth hollow cavity; 446. Fourth mounting hole; 510. Fifth integrated cooling frame; 520. Fourth liquid cooling channel; 530. Fifth hollow cavity; 540. First mounting mating surface; 550. Second mounting mating surface; 560. Fourth liquid inlet; 570. Fourth liquid outlet; 551. Second mounting plane; 552. Second stepped surface. Detailed Implementation

[0060] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0061] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0062] Please see Figure 1 This embodiment provides a lead screw cooling system, which includes: a lead screw mechanism 100, a lead screw nut cooling sleeve 200, a fixed end bearing seat 300, a motor end bearing seat 400, and a motor pad 500. The lead screw mechanism 100 includes a lead screw body 110, a lead screw nut 120, a lead screw motor 130, a lead screw motor end 140, and a lead screw fixed end 150. One end of the lead screw body 110 is rotatably connected to the lead screw motor end 140, and the other end is rotatably connected to the lead screw fixed end 150. The lead screw nut 120 is installed on the lead screw body 110, and the lead screw motor 130 is drivenly connected to the lead screw body 110.

[0063] The lead screw nut cooling sleeve 200 includes a first liquid cooling channel 220. The lead screw nut cooling sleeve 200 is sleeved on the lead screw nut 120. The first liquid cooling channel 220 is used to cool the lead screw nut 120.

[0064] The fixed end bearing housing 300 includes a second liquid cooling channel 320. The fixed end bearing housing 300 is installed on the fixed end 150 of the lead screw, and the second liquid cooling channel 320 is used to cool the fixed end 150 of the lead screw.

[0065] The motor end bearing housing 400 includes a third liquid cooling channel 420. The motor end bearing housing 400 is mounted on the lead screw motor end 140, and the third liquid cooling channel 420 is used to cool the lead screw motor end 140.

[0066] The motor pad 500 includes a fourth liquid cooling channel 520. The motor pad 500 is connected to the lead screw motor 130. The fourth liquid cooling channel 520 is used to cool the lead screw motor 130. The first liquid cooling channel 220 is connected in parallel with the second liquid cooling channel 320, the third liquid cooling channel 420 and the fourth liquid cooling channel 520 respectively.

[0067] In this embodiment, when the lead screw mechanism 100 is in operation, the components that cause the lead screw body 110 to heat up mainly include the lead screw motor 130, the lead screw fixed end 150, the lead screw motor end 140, and the lead screw nut 120. For example, when the lead screw mechanism 100 is working, the lead screw motor 130 generates heat and transfers it to the lead screw body 110. After the lead screw body 110 rotates at high speed, the connection position between the lead screw body 110 and the lead screw fixed end 150, as well as the connection position between the lead screw body 110 and the lead screw motor end 140, will generate heat. After high load and high speed repeated movement, the lead screw nut 120 itself and the position connected to the lead screw body 110 will generate heat. This heat generation can easily cause thermal expansion and deformation, resulting in a decrease in the accuracy of the lead screw mechanism 100.

[0068] This embodiment provides a lead screw cooling system that keeps the lead screw body 110 at a constant temperature, reducing the impact of thermal expansion and contraction on the accuracy of the lead screw body 110. The lead screw nut cooling jacket 200 can remove the heat generated by the high-speed operation of the lead screw nut 120 and the heat generated by the friction between the lead screw nut 120 and the lead screw body 110 through the first liquid cooling channel 220; the fixed end bearing seat 300 can remove the heat generated by the friction between the fixed end 150 of the lead screw and the lead screw body 110 through the second liquid cooling channel 320; the motor end bearing seat 400 can remove the heat generated by the friction between the motor end 140 of the lead screw and the lead screw body 110 through the third liquid cooling channel 420; the motor pad 500 can remove the heat generated by the operation of the lead screw motor 130 through the fourth liquid cooling channel 520, preventing the lead screw motor 130 from transferring heat to the lead screw body 110. It can be seen that this embodiment can effectively dissipate heat from multiple heat sources of the lead screw body 110 at the same time, so that the lead screw body 110 can maintain a constant temperature state, thereby reducing the impact of thermal expansion and contraction of the lead screw body 110 on the accuracy of the lead screw body 110.

[0069] In addition, in this embodiment, the first liquid cooling channel 220 is connected in parallel with the second liquid cooling channel 320, the third liquid cooling channel 420 and the fourth liquid cooling channel 520 respectively. The parallel channels can distribute the coolant to the nut cooling jacket 200, the fixed end bearing seat 300, the motor end bearing seat 400 and the motor pad 500, so that each branch channel covers different heat source areas, thereby achieving more uniform heat dissipation. The channel layout can be flexibly designed according to the distribution of heat sources, and precise cooling can be performed for different heat source areas. By adjusting the flow distribution of each parallel channel, more coolant can be provided to high heat areas to achieve dynamic thermal management. At the same time, it can also reduce the power consumption of the system pump and improve the energy efficiency of the cooling system.

[0070] Therefore, in this embodiment, the lead screw body 110 can be rapidly cooled by the lead screw cooling sleeve 200, the fixed end bearing seat 300, and the motor end bearing seat 400, which avoids deformation during the lead screw processing and thus improves the machining accuracy of the lead screw. In addition, the motor pad 500 can cool the heat generated by the motor and prevent the heat generated by the motor from affecting the machining accuracy of the lead screw.

[0071] Specifically, please refer to Figure 2 and Figure 3 The lead screw nut cooling sleeve 200 further includes: a first integrated cooling housing 210, two fastening parts 240, a first liquid inlet 250, and a first liquid outlet 260. The first integrated cooling housing 210 is provided with a first liquid cooling channel 220. The first integrated cooling housing 210 defines a first hollow cavity 230 for embedding the lead screw nut 120. The first integrated cooling housing 210 has an opening 211 that extends through the entire first integrated cooling housing 210 along its axial direction. The two fastening parts 240 are located on both sides of the opening 211 and are used to close the opening 211. The first liquid inlet 250 is disposed in the first integrated cooling housing 210 and is used to communicate with the first liquid cooling channel 220. The first liquid outlet 260 is disposed in the first integrated cooling housing 210 and is used to communicate with the first liquid cooling channel 220.

[0072] In this embodiment, when installing the lead screw nut cooling sleeve 200 and the lead screw nut 120, since the first integrated cooling housing 210 has an opening 211 and the size of the first hollow cavity 230 of the first integrated cooling housing 210 is slightly larger than the outer diameter of the lead screw nut 120, the lead screw nut 120 can be inserted into the first hollow cavity 230. Then, the opening 211 is closed by the fastening part 240, so that the first integrated cooling housing 210 is tightly fixed to the lead screw nut 120. Its structure is simple and easy to install. The opening 211 greatly simplifies the installation process and improves work efficiency. At the same time, the fastening part 240 ensures the tightness and reliability of the connection between the lead screw nut cooling sleeve 200 and the lead screw nut 120, thereby ensuring that the lead screw cooling sleeve 200 can effectively cool the lead screw nut 120 and ensure the machining accuracy of the lead screw mechanism 100. Furthermore, the lead screw cooling sleeve 200 adopts an integrated molding design, which has high structural strength, simplifies the production process, and reduces costs.

[0073] Specifically, please refer to Figure 3The fastening part 240 includes a fastening body 241, a first mounting hole 242, and a gradient connecting part 243. The fastening body 241 extends radially outward along the first integrated cooling housing 210. The first mounting hole 242 is formed in the fastening body 241 and is used for fixed connection with a bolt to achieve a closed opening 211. The gradient connecting part 243 connects the fastening body 241 and the first integrated cooling housing 210. The cross-sectional size of the gradient connecting part 243 gradually increases from the first integrated cooling housing 210 toward the opening 211.

[0074] In this embodiment, the first mounting hole 242 can be configured as a threaded hole. When installing the lead screw nut cooling sleeve 200 and the lead screw nut 120, the first integrated cooling housing 210 can be fitted onto the lead screw nut 120, and then the bolts can be connected to the first mounting hole 242 to lock the fastening part 240, so that the fastening body 241 is tightly fixed to the lead screw nut 120. This facilitates installation and provides good heat dissipation. The gradient connection part 243 can significantly reduce the stress concentration of the first integrated cooling housing 210, making the stress distribution at the fastening part 240 position more uniform and avoiding excessive local stress.

[0075] Specifically, please refer to Figure 4 The first liquid cooling channel 220 includes a left liquid cooling channel 221 and a right liquid cooling channel 222 connected to the left liquid cooling channel 221. The left liquid cooling channel 221 is located on the left side of the first integrated cooling housing 210, and the right liquid cooling channel 222 is located on the right side of the first integrated cooling housing 210.

[0076] In this embodiment, the first liquid cooling channel 220 includes a left liquid cooling channel 221 and a right liquid cooling channel 222. It can be understood that the first integrated cooling housing 210 has a proximal end and a distal end. Taking the first liquid inlet 250 located at the proximal end as an example, the first liquid inlet 250 can communicate with the left liquid cooling channel 221. The left liquid cooling channel 221 extends from the proximal end to the distal end. The right liquid cooling channel 222 communicates with the left liquid cooling channel 221 at the distal end, and the right liquid cooling channel 222 extends from the distal end to the proximal end. The right liquid cooling channel 222 communicates with the first liquid outlet 260 at the proximal end. That is, both the first liquid inlet 250 and the first liquid outlet 260 are located at the proximal end, which facilitates the arrangement of pipelines and makes installation and maintenance easier.

[0077] Specifically, please refer to Figure 4 The left liquid cooling channel 221 includes several sequentially connected S-shaped channels 223; the right liquid cooling channel 222 includes several sequentially connected S-shaped channels 223.

[0078] The S-shaped flow channel 223 can extend the flow path of the coolant in the lead screw nut cooling jacket 200, increase the contact area between the lead screw nut 120 and the cooling surface, and improve the heat exchange efficiency. At the same time, the S-shaped flow channel 223 generates more turbulence when the coolant flows, breaks the laminar boundary layer, and improves the heat transfer efficiency. In addition, the S-shaped flow channel 223 can make the coolant distribution more uniform, avoid local overheating, and ensure the overall temperature consistency of the lead screw nut 120.

[0079] Specifically, please refer to Figure 4 The fixed-end bearing housing 300 further includes: a second integrated cooling housing 310, a second mounting portion 340, a second liquid inlet 350, and a second liquid outlet 360. The second integrated cooling housing 310 defines a second hollow cavity 330, which is used to connect the bearing 111 of the screw fixed end 150. The second integrated cooling housing 310 is provided with a second liquid cooling channel 320 surrounding the second hollow cavity 330. The second mounting portion 340 extends outward from the second integrated cooling housing 310 and is provided with a plurality of second mounting holes 341. The second liquid inlet 350 is disposed in the second integrated cooling housing 310 and is used to communicate with the second liquid cooling channel 320. The second liquid outlet 360 is disposed in the second integrated cooling housing 310 and is used to communicate with the second liquid cooling channel 320.

[0080] In this embodiment, the fixed end bearing seat 300 is installed on the fixed end 150 of the lead screw body. A fixing cap 311 can be provided on the side of the fixed end bearing seat 300 away from the lead screw nut. The fixing nut 312 is located at the end of the lead screw nut. Coolant can enter the second liquid cooling channel 320 from the second liquid inlet 350 and flow out from the second liquid outlet 360 to remove the heat generated by the fixed end 150 of the lead screw, thereby cooling the fixed end 150 of the lead screw and ensuring that the lead screw body 110 operates within a suitable temperature range to maintain its accuracy and performance. The second mounting part 340 extends outward from the second integrated cooling housing 310. The second mounting part 340 is provided with a second mounting hole 341 for fixing the fixed end bearing seat 300. Its structure is simple, integrally formed, easy to install, and has high structural strength. It can provide a stable and constant temperature working environment for the high-speed operation of the lead screw body 110 to ensure the machining accuracy of the lead screw mechanism 100.

[0081] Specifically, please refer to Figure 5The motor end bearing housing 400 also includes: a third integrated cooling housing 410, a third housing fixing seat 440, and a stop block 112. The third integrated cooling housing 410 defines a third hollow cavity 430. The third hollow cavity 430 is used to connect the bearing 111 of the lead screw motor end 140. The third integrated cooling housing 410 is provided with a third liquid cooling channel 420 surrounding the third hollow cavity 430. The third housing fixing seat 440 is sleeved on the third integrated cooling housing 410 and is used to fix the lead screw motor end 140. The stop block 112 is disposed on the side of the third housing fixing seat 440 near the lead screw nut 120. The stop block 112 can limit the movement range of the lead screw nut 120 and also has a buffering and shock absorption effect, which can reduce the impact when the lead screw nut 120 reaches the end point, and reduce noise and wear.

[0082] In this embodiment, the third housing fixing seat 440 is located on the side of the lead screw body 110 near the lead screw motor 130. For example, the lead screw motor 130 is connected to the lead screw body 110 via a coupling 131. The bearing 111 of the lead screw motor end 140 is embedded in the third integrated cooling housing 410. The third integrated cooling housing 410 is provided with a third liquid cooling channel 420. The third integrated cooling housing 410 can remove heat from the lead screw motor end 140 through the third liquid cooling channel 420 to achieve cooling of the lead screw motor end 140, ensuring that the lead screw body 110 operates within a suitable temperature range to maintain its accuracy and performance. In order to maintain the high-speed operation of the lead screw mechanism 100, the third housing fixing seat 440 is sleeved on the third integrated cooling housing 410. The third housing fixing seat 440 can restrict and fix the third integrated cooling housing, that is, provide a stable working environment for the high-speed operation of the bearing 111 of the lead screw motor end 140.

[0083] Specifically, please refer to Figure 5 The third integrated cooling housing 410 includes: a third tubular structure 411, a third base plate 412, a third liquid inlet 413, and a third liquid outlet 414. The third tubular structure 411 is embedded in the third housing fixing seat 440 and defines a third hollow cavity 430. A third liquid cooling channel 420 is provided inside the third tubular structure 411 and surrounds the third hollow cavity 430. The third base plate 412 is disposed at the bottom of the third tubular structure 411 and is integrally formed with the third tubular structure 411. The third liquid inlet 413 is disposed on the third base plate 412 and is used to communicate with the third liquid cooling channel 420. The third liquid outlet 414 is disposed on the third base plate 412 and is used to communicate with the third liquid cooling channel 420.

[0084] In this embodiment, coolant can enter the third liquid cooling channel 420 from the third inlet 413 and flow out from the third outlet 414 to carry away the heat generated by the lead screw motor end 140, thereby cooling the lead screw motor end 140 and ensuring that the lead screw mechanism 100 operates within a suitable temperature range to maintain its accuracy and performance. The third tubular structure 411 is embedded in the third housing fixing seat 440 and sleeved on the bearing 111 of the screw motor end 140. The third base plate 412 is located at the bottom of the third tubular structure 411. It can be understood that the third base plate 412 extends outward from the bottom of the third tubular structure 411. The third base plate 412 is provided with a third liquid inlet 413 and a third liquid outlet 414. On the one hand, the third housing fixing seat 440 can form a tight fit with the third tubular structure 411 to restrict the bearing 111 of the screw motor end 140. On the other hand, the third base plate 412 can provide a convenient installation environment for the third liquid inlet 413 and the third liquid outlet 414, which can facilitate the installation and fixation of the third integrated cooling housing 410 and ensure that the third integrated cooling housing 410 can effectively dissipate heat and cool the screw motor end 140.

[0085] Specifically, please refer to Figure 5 The third housing mounting base 440 includes: a mounting base body 441, a fourth mounting part 442, and a motor connecting frame 443. The mounting base body 441 defines a fourth hollow cavity 444, which is used to embed and install the third integrated cooling housing 410. The fourth mounting part 442 is located on the left and right sides of the mounting base body 441 and extends outward from the mounting base body 441. The fourth mounting part 442 is provided with a plurality of fourth mounting holes 445, which are used to fix the lead screw motor end 140. The motor connecting frame 443 is located on the side of the mounting base body 441 away from the fourth hollow cavity 444. The motor connecting frame 443 abuts against the lead screw motor 130 via a motor pad 500 and is used to install the motor pad 500.

[0086] In this embodiment, the fixed base body 441 is fitted with the third integrated cooling housing 410 through the fourth hollow cavity 444, so that the third integrated cooling housing 410 and the third housing fixed base 440 are tightly fitted together, and the connection is stable, which can provide a stable output environment for the operation of the lead screw mechanism 100. The fourth mounting part 442 extends outward from the fixed base body 441 and is provided with a plurality of fourth mounting holes 445. The lead screw motor end 140 can be fixed through the fourth mounting holes 445, which facilitates installation. The motor connecting frame 443, the motor pad 500 and the lead screw motor 130 are stacked and tightly connected together in sequence. For example, the motor connecting frame 443 can fix the motor pad 500 to the lead screw motor 130 with bolts, so that the motor pad 500 can quickly cool and dissipate heat from the lead screw motor 130 and prevent the heat generated by the lead screw motor 130 from being transferred to the lead screw body 110.

[0087] Specifically, please refer to Figure 5 The motor pad 500 includes: a fifth integrated cooling frame 510, a first mounting surface 540, a second mounting surface 550, a fourth liquid inlet 560, and a fourth liquid outlet 570. The fifth integrated cooling frame 510 defines a fifth hollow cavity 530, which is used to install the coupling 131 on the lead screw motor 130. The fifth integrated cooling frame 510 also has a fourth liquid cooling channel 520. The first mounting surface 540 is disposed on the fifth integrated cooling frame 510 and is used to fit and connect with the motor connecting frame 443. The second mounting surface 550 is disposed on the side of the fifth integrated cooling frame 510 away from the first mounting surface 540. The second mounting surface 550 includes a first... The second mounting plane 551 and the second stepped surface 552 are located around the second stepped surface 552. Both the second mounting plane 551 and the second stepped surface 552 are used to fit and connect with the lead screw motor 130. The fourth liquid inlet 560 is set on the fifth integrated cooling frame 510, and the fourth liquid inlet 560 is located on the vertical surface between the first mounting surface 540 and the second mounting surface 550. The fourth liquid inlet 560 is used to communicate with the fourth liquid cooling channel 520. The fourth liquid outlet 570 is set on the fifth integrated cooling frame 510, and the fourth liquid outlet 570 is located on the vertical surface between the first mounting surface 540 and the second mounting surface 550. The fourth liquid outlet 570 is used to communicate with the fourth liquid cooling channel 520.

[0088] In this embodiment, coolant can enter the fourth liquid cooling channel 520 from the fourth inlet 560 and flow out from the fourth outlet 560 to remove the heat generated by the lead screw motor 130, preventing the lead screw motor 130 from transferring heat to the lead screw body 110, and ensuring that the lead screw mechanism 100 operates within a suitable temperature range to maintain its accuracy and performance. The fifth integrated cooling frame 510 is provided with a first mounting surface 540 and a second mounting surface 550 on the other side. The fifth integrated cooling frame 510 is embedded between the motor connecting frame 443 and the lead screw motor 130 through the first mounting surface 540 and the second mounting surface 550, allowing the motor pad 500 to fit tightly with the motor connecting frame 443 and the lead screw motor 130, effectively cooling the lead screw motor 130. In addition, the fifth integrated cooling frame 510 has a fifth hollow cavity 530. When installing the motor pad 500, the fifth hollow cavity 530 can be fitted onto the coupling 131, making installation convenient.

[0089] The specific structures of the second liquid cooling channel 320 and the third liquid cooling channel 420 can be referenced from the structure of the first liquid cooling channel 220, and the specific structures of the second liquid cooling channel 320 and the third liquid cooling channel 420 will not be described in detail. The motor pad 500 has a flat rectangular frame structure, and the fourth liquid cooling channel 520 can be arranged along the edge of the motor pad 500, and the specific structure of the fourth liquid cooling channel 520 will not be described in detail.

[0090] In summary, this application discloses a lead screw cooling system, comprising a lead screw mechanism, a lead screw nut cooling sleeve, a fixed end bearing seat, a motor end bearing seat, and a motor pad. The lead screw mechanism includes a lead screw body, a lead screw nut, a lead screw motor, a lead screw motor end, and a lead screw fixed end. One end of the lead screw body is rotatably connected to the lead screw motor end, and the other end is rotatably connected to the lead screw fixed end. The lead screw nut is mounted on the lead screw body. The lead screw motor is driven by the lead screw body. The lead screw nut cooling sleeve includes a first liquid cooling channel and is sleeved on the lead screw nut. A liquid cooling channel is used to cool the lead screw nut. The fixed end bearing housing includes a second liquid cooling channel, which is installed on the fixed end of the lead screw. The second liquid cooling channel is used to cool the fixed end of the lead screw. The motor end bearing housing includes a third liquid cooling channel, which is installed on the motor end of the lead screw. The third liquid cooling channel is used to cool the motor end of the lead screw. The motor pad includes a fourth liquid cooling channel, which is connected to the lead screw motor. The fourth liquid cooling channel is used to cool the lead screw motor. The first liquid cooling channel is connected in parallel with the second, third, and fourth liquid cooling channels. This application achieves rapid cooling of the lead screw body through the lead screw nut cooling sleeve, the fixed end bearing housing, and the motor end bearing housing, avoiding deformation during the lead screw machining process, thereby improving the machining accuracy of the lead screw. Furthermore, the motor pad can cool the heat generated by the motor, preventing the motor heat from affecting the machining accuracy of the lead screw.

[0091] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lead screw cooling system, characterized in that, include: A lead screw mechanism, comprising a lead screw body, a lead screw nut, a lead screw motor, a lead screw motor end, and a lead screw fixed end. One end of the lead screw body is rotatably connected to the lead screw motor end, and the other end is rotatably connected to the lead screw fixed end. The lead screw nut is mounted on the lead screw body, and the lead screw motor is drivenly connected to the lead screw body. A lead screw nut cooling sleeve, the lead screw nut cooling sleeve including a first liquid cooling channel, the lead screw nut cooling sleeve being sleeved on the lead screw nut, the first liquid cooling channel being used to cool the lead screw nut; A fixed-end bearing housing, the fixed-end bearing housing including a second liquid cooling channel, the fixed-end bearing housing being installed on the fixed end of the lead screw, the second liquid cooling channel being used to cool the fixed end of the lead screw; A motor end bearing housing, the motor end bearing housing including a third liquid cooling channel, the motor end bearing housing being installed on the end of the lead screw motor, the third liquid cooling channel being used to cool the end of the lead screw motor; A motor pad, the motor pad including a fourth liquid cooling channel, the motor pad being connected to the lead screw motor, the fourth liquid cooling channel being used to cool the lead screw motor, and the first liquid cooling channel being connected in parallel with the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel respectively; The nut cooling jacket also includes: The first integrated cooling housing has a first liquid cooling channel inside it. The first integrated cooling housing defines a first hollow cavity for embedding a lead screw nut. The first integrated cooling housing has an opening that extends through the entire first integrated cooling housing along its axial direction. Two fastening parts are located on both sides of the opening, and the two fastening parts are used to close the opening; The first liquid inlet is disposed in the first integrated cooling housing and is used to communicate with the first liquid cooling channel. The first liquid outlet is disposed on the first integrated cooling housing and is used to communicate with the first liquid cooling channel.

2. The lead screw cooling system as described in claim 1, characterized in that, The first liquid cooling channel includes a left liquid cooling channel and a right liquid cooling channel communicating with the left liquid cooling channel. The left liquid cooling channel is located on the left side of the first integrated cooling housing, and the right liquid cooling channel is located on the right side of the first integrated cooling housing.

3. The lead screw cooling system as described in claim 2, characterized in that, The left liquid cooling channel includes several sequentially connected S-shaped channels; the right liquid cooling channel includes several sequentially connected S-shaped channels.

4. The lead screw cooling system as described in claim 1, characterized in that, The fastening part includes: A fastening body extends radially outward along the first integrated cooling housing; A first mounting hole is formed in the fastening body and is used for fixing a bolt to close the opening. A gradient connection portion is provided, which is connected to the fastening body and the first integrated cooling housing. The cross-sectional dimensions of the gradient connection portion gradually increase from the first integrated cooling housing towards the opening side.

5. The lead screw cooling system as described in claim 1, characterized in that, The fixed-end bearing housing also includes: The second integrated cooling housing defines a second hollow cavity, which is used to connect the bearing at the fixed end of the lead screw. The second integrated cooling housing is provided with a second liquid cooling channel surrounding the second hollow cavity. The second mounting portion extends outward from the second integrated cooling housing and is provided with a plurality of second mounting holes. The second liquid inlet is disposed in the second integrated cooling housing and is used to communicate with the second liquid cooling channel; The second liquid outlet is disposed in the second integrated cooling housing and is used to communicate with the second liquid cooling channel.

6. The lead screw cooling system as described in claim 1, characterized in that, The motor end bearing housing also includes: The third integrated cooling housing defines a third hollow cavity, which is used to connect the bearing at the end of the lead screw motor. The third integrated cooling housing is provided with a third liquid cooling channel surrounding the third hollow cavity. The third housing fixing seat is sleeved on the third integrated cooling housing and is used to fix the lead screw motor end.

7. The lead screw cooling system as described in claim 6, characterized in that, The third integrated cooling housing includes: The third tubular structure is embedded in the third housing fixing seat and defines the third hollow cavity. The third tubular structure has a third liquid cooling channel surrounding the third hollow cavity. The third base plate is disposed at the bottom of the third tubular structure and is integrally formed with the third tubular structure; The third liquid inlet is disposed on the third base plate and is used to communicate with the third liquid cooling channel; The third liquid outlet is disposed on the third base plate and is used to communicate with the third liquid cooling channel.

8. The lead screw cooling system as described in claim 6, characterized in that, The third housing mounting base includes: A mounting base body defines a fourth hollow cavity, which is used to embed and install the third integrated cooling housing; The fourth mounting part is located on the left and right sides of the fixed base body. The fourth mounting part extends outward from the fixed base body and is provided with a plurality of fourth mounting holes for fixing the lead screw motor end. A motor connection frame is disposed on the side of the fixed base body away from the fourth hollow cavity. The motor connection frame abuts against the lead screw motor via the motor pad and is used to install the motor pad.

9. The lead screw cooling system as described in claim 8, characterized in that, The motor pad includes: The fifth integrated cooling frame defines a fifth hollow cavity, which is used to install the coupling on the lead screw motor, and the fifth integrated cooling frame is provided with the fourth liquid cooling channel. The first mounting and fitting surface is disposed on the fifth integrated cooling frame and is used to fit and connect with the motor connection frame. The second mounting and fitting surface is located on the side of the fifth integrated cooling frame away from the first mounting and fitting surface. The second mounting and fitting surface includes a second mounting plane and a second stepped surface. The second mounting plane is located around the second stepped surface. Both the second mounting plane and the second stepped surface are used to fit and connect with the lead screw motor. The fourth liquid inlet is disposed on the fifth integrated cooling frame and is located on the vertical surface between the first mounting surface and the second mounting surface. The fourth liquid inlet is used to communicate with the fourth liquid cooling channel. The fourth liquid outlet is disposed on the fifth integrated cooling frame and is located on the vertical surface between the first mounting surface and the second mounting surface. The fourth liquid outlet is used to communicate with the fourth liquid cooling channel.

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