Cooling type ball screw

By combining the pump box unit and the cooling plate into a cooling system, the deformation problem of the ball screw caused by frictional heat was solved, achieving efficient cooling and stable transmission.

CN224174523UActive Publication Date: 2026-04-28NAN JING MA SHI QI KE JI YOU XIAN GONG SI
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NAN JING MA SHI QI KE JI YOU XIAN GONG SI
Filing Date
2025-06-05
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing ball screws generate heat due to friction between the nut and the balls during prolonged use, leading to deformation and inaccurate precision. Furthermore, the cooling method of the hollow structure cannot effectively withstand heavy loads, which can easily cause equipment damage.

Method used

The pump box is integrated for oil-water circulation cooling, combined with ceramic plates and semiconductor cooling chips. The circuit is protected by spiral tubes and tank chains to achieve uniform cooling and stable transmission of the nut.

Benefits of technology

This achieves uniform cooling of the nut, improves transmission efficiency and equipment stability, prevents deformation, and ensures efficient operation.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224174523U_ABST
    Figure CN224174523U_ABST
Patent Text Reader

Abstract

The utility model provides a cooling type ball screw, relates to mechanical transmission technical field, including pump box all-in-one machine, slider subassembly and chilling plate, pump box all-in-one machine includes oil tank, oil tank top front surface is fixedly equipped with the water pump, and the both sides of water pump are equipped with a group of water pipe respectively, one group of water pipe is connected water tank top front surface, and the other group of water pipe is connected water tank top front surface. The other group of water pipes is connected with the two groups of sliding block assemblies. Oil and water are pumped through the water pump of the pump box all-in-one machine and transmitted to the spiral pipe in the nut for circulation, then cooling and refrigeration are conducted through the refrigeration pieces installed on the two sides of the nut, the nut is evenly cooled when moving through the ball threaded lead screw, the internal structure of the threaded lead screw is not changed, and the service life of the nut is prolonged. And the cooling mechanism on the nut can quickly cool the nut and the threaded screw rod while the transmission task is carried out with relatively high rigidity, so that stable working efficiency is achieved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a cooled ball screw. Background Technology

[0002] A ball screw is a mechanical transmission device that converts rotary motion into linear motion or vice versa. It is a precision mechanical component. By adding balls (steel balls) between the screw and the nut, it uses rolling friction to replace the sliding friction of the traditional sliding screw, thereby significantly improving transmission efficiency and accuracy. Existing motorcycle damping shock absorbers are mainly used in machine tools, automated equipment, precision instruments, aerospace and other fields.

[0003] However, because ball bearings (steel balls) are added between the nuts, when they move linearly or rotary on the screw for a long time, the ball bearings (steel balls) will rub against the screw thread and the inside of the nut, generating heat. This causes deformation of the screw and nut, resulting in inaccurate precision and equipment damage. Existing ball screw cooling technology uses a hollow screw structure to allow coolant (oil or water) to circulate inside the screw. This is not conducive to the overall integrity and strength of the screw. For heavy loads that need to be dragged by the screw, the hollow screw structure cannot easily bear the weight, leading to deformation and accidents. Utility Model Content

[0004] The purpose of this invention is to provide a cooled ball screw to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cooling ball screw, comprising an integrated pump and housing, a slider assembly, and a cooling plate;

[0006] The pump box integrated machine includes an oil tank, a water pump is fixedly installed on the top surface of the oil tank, and a set of water pipes are opened on each side of the water pump. One set of water pipes is connected to the top surface of the water tank, and the other set of water pipes is connected to two sets of slider assemblies.

[0007] The slider assembly includes two sets of nuts. Each set of nuts has a set of spiral tubes inside. The front end of each set of spiral tubes is connected to a water inlet, and the tail end of each set of spiral tubes is connected to a water outlet. A support plate is fixedly installed on the top outer wall of each set of nuts.

[0008] The cooling chip includes two sets of ceramic plates. The outer wall of one set of ceramic plates is fixedly installed on the outer walls of both sides of the nut. Multiple sets of N-type semiconductors and P-type semiconductors are equidistantly installed on the inner wall of the ceramic plates. Another set of ceramic plates is fixedly installed on the top of the N-type semiconductors and P-type semiconductors. A power port is opened on one side of the cooling chip. The cooling chip is divided into four sets and is equidistantly installed on the outer walls of both sides of the two sets of nuts.

[0009] Preferably, the power port inside the cooling chip is connected to a wire, and the wire is inserted and movable inside the tank chain. The tank chain also has a water inlet and a water outlet connected to a water pipe, and the tank chain is movably installed directly above the guide rail.

[0010] Preferably, the guide rails are divided into two groups and are fixedly installed at equal intervals at the top center of the tabletop.

[0011] Preferably, a motor is fixedly installed on the side of the desktop, and a threaded screw is movably connected to the middle of one side of the motor. The threaded screw extends towards the other side of the desktop, reaching the middle of the support base, which is fixedly installed on the desktop. Two sets of slide rails are installed on the top surface of the desktop, and a set of limiting blocks are fixedly installed at both ends of each set of slide rails. Each set of limiting blocks is fixedly installed on the front surface of the desktop. Two sets of guide rails are fixedly installed on the top surface of the desktop, and the two sets of guide rails are installed in the gap between the two sets of slide rails. Two sets of tank tracks are movably installed inside each set of guide rails.

[0012] Preferably, the top of the slide rail is provided with a slide platform, the bottom of which is movably connected to each set of slide rails by a buckle, and an operating table is fixedly installed on the top of the buckle.

[0013] Preferably, the pump box unit is located on the outside of the table, and the water pipe connected to the water pump above the pump box unit is connected in series with the spiral tube inside each set of nuts and fixedly installed on the top of the table.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, the water pump of the integrated pump box extracts oil and water, which is then transported to the spiral tube inside the nut for circulation. Cooling plates installed on both sides of the nut provide cooling, so that the nut is uniformly cooled and cooled when the ball screw moves. This does not change the internal structure of the screw, and the nut can perform the transmission task with strong rigidity. At the same time, the cooling mechanism on the nut can quickly cool the nut and the screw, achieving stable working efficiency.

[0016] 2. In this utility model, the cable is pulled and stored by the tank chains on both sides of the nut. While moving with the nut, the internal wires and water pipes are also pulled through, preventing them from being damaged by external friction, impact, pulling, squeezing, etc. The cable is pulled and moves back and forth with the nut, saving space and improving work efficiency. Attached Figure Description

[0017] Figure 1 A perspective view of a cooling type ball screw is provided for this utility model;

[0018] Figure 2 A top view of a cooling ball screw is provided for this utility model;

[0019] Figure 3 A perspective view of a slider assembly in a cooling ball screw is provided for this utility model;

[0020] Figure 4 A cross-sectional view of the slider assembly in a cooling ball screw is provided for this utility model;

[0021] Figure 5 This utility model provides an internal view of the cooling plate in a cooling ball screw.

[0022] Legend: 1. Table; 101. Desktop; 102. Guide rail; 103. Tank chain; 2. Slide table; 201. Operating table; 202. Slide rail; 203. Limit block; 3. Motor; 301. Threaded screw; 302. Support base; 4. Pump box integrated unit; 401. Oil tank; 402. Water pump; 5. Slider assembly; 501. Nut; 502. Support plate; 503. Water inlet; 504. Water outlet; 505. Spiral tube; 6. Cooling element; 601. Ceramic plate; 602. N-type semiconductor; 603. P-type semiconductor; 604. Power port. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1: Refer to Figure 1 - Figure 5 As shown: In this embodiment, a cooled ball screw is included, comprising a pump housing 4, a slider assembly 5, and a cooling plate 6;

[0026] The pump box integrated machine 4 includes an oil tank 401. A water pump 402 is fixedly installed on the top surface of the oil tank 401. A set of water pipes is opened on each side of the water pump 402. One set of water pipes is connected to the top surface of the water tank, and the other set of water pipes is connected to two sets of slider assemblies 5.

[0027] The slider assembly 5 includes two sets of nuts 501. Each set of nuts 501 has a set of spiral tubes 505 inside. The front end of each set of spiral tubes 505 is connected to a water inlet 503, and the tail end of each set of spiral tubes 505 is connected to a water outlet 504. Each set of nuts 501 has a support plate 502 fixedly installed on the top outer wall.

[0028] The cooling chip 6 includes two sets of ceramic plates 601. The outer wall of one set of ceramic plates 601 is fixedly installed on the outer walls of both sides of the nut 501. Multiple sets of N-type semiconductors 602 and P-type semiconductors 603 are equidistantly installed on the inner wall of the ceramic plates 601. Another set of ceramic plates 601 is fixedly installed on the top of the N-type semiconductors 602 and P-type semiconductors 603. A power port 604 is opened on one side of the cooling chip. The cooling chip 6 is divided into four sets, which are equidistantly installed on the outer walls of both sides of the two sets of nuts 501.

[0029] The overall effect of the first embodiment is as follows: The pump box integrated machine 4, located on one side of the table 1, uses a water pump 402 above it to extract oil and water. The water is then transmitted through a water pipe on one side of the water pump 402 to the water inlet 503 of the slider assembly 5. The oil and water are then fed into the internal spiral tube 505 of the slider assembly 5 through the water inlet 503. A water outlet 504 connects to the water pipe, transmitting the oil and water back to the pump box integrated machine 4 for circulation and cooling. This causes the high temperature of the balls in the ball screw nut 501 to transfer to a low temperature environment during the cyclical friction, achieving precise temperature control. Meanwhile, the cooling plates 6 installed on both sides of the nut 501 are equidistantly spaced inside... The device contains multiple sets of N-type semiconductors 602 and P-type semiconductors 603, with a power port 604 installed on one side. All are installed inside two ceramic plates 601. When current flows from the N-type semiconductor 602 to the node of the P-type semiconductor 603, electrons transition from a low energy level to a high energy level, absorbing heat and causing the temperature of the cooling chip 6 to drop. The ceramic plate 601 has good conductivity, which promotes a more stable cooling effect. The freezing point of oil is 70 degrees Celsius. When oil and water circulate inside the nut 501, they will not freeze due to the cooling effect and will not be unable to circulate. The cooling chip 6 can promote the cooling effect of oil and water during circulation, thereby increasing the cooling effect.

[0030] Example 2: According to Figure 1 - Figure 5As shown: A wire is connected to the internal power port 604 of the cooling chip 6, and the wire is inserted and movable inside the tank chain 103. A water inlet 503 and a water outlet 504 connected to the tank chain 103 are also inserted inside the tank chain 103. The tank chain 103 is movably mounted directly above the guide rail 102. The guide rail 102 is divided into two groups, equidistantly fixed at the center of the top of the tabletop 101 of the table 1. A motor 3 is fixedly mounted on the side of the tabletop 101, and a threaded screw 301 is movably connected to the middle of one side of the motor 3. The threaded screw 301 extends towards the other side of the tabletop 101, extending to the middle of the support base 302. The support base 302 is fixedly mounted on the tabletop 101. Two sets of slide rails 202 are mounted on the top surface of the tabletop 101. Each set of slide rails 202 has a set of limiting blocks 203 fixedly installed at both ends. Each set of limiting blocks 203 is fixedly installed on the front surface of the desktop 101. Two sets of guide rails 102 are fixedly installed on the top surface of the desktop 101. The two sets of guide rails 102 are installed in the gap between the two sets of slide rails 202. Two sets of tank chains 103 are movably installed inside each set of guide rails 102. A slide table 2 is opened on the top of the slide rail 202. The bottom of the slide table 2 is movably connected to each set of slide rails 202 by a buckle. An operating table 201 is fixedly installed on the top of the buckle. The pump box integrated machine 4 is set on one side outside the table 1. The water pipe connected to the water pump 402 above the pump box integrated machine 4 is connected in series with the spiral tube 505 inside each set of nuts 501 and fixedly installed on the top of the desktop 101.

[0031] The effect achieved by the entire embodiment 2 is as follows: a power port 604 is provided inside the cooling chip 6, and a wire is connected to the power port 604 and moves through the tank chain 103. A set of spiral tubes 505 is provided inside the slider assembly 5, and each end of the spiral tube 505 is connected to a water inlet 503 and a water outlet 504. Each of the water inlet tube 503 and the water outlet 504 is connected to a set of water pipes that move through the tank chain 103, thereby protecting the cables and pipes and providing traction and guidance. The tank chain 103 is movably installed on the inner surface 101 of the guide rail 102, and the guide rail 102 is fixedly installed on both sides of the middle of the table. The guide rail 102 can effectively guide the tank chain 103 to move.

[0032] Working principle: When motor 3 starts, it drives the rotating screw 301, causing nut 501 to move above tabletop 101. Simultaneously, the pump-box assembly 4 starts oil-water circulation. Oil and water are extracted by the water pump 402 above the pump-box assembly 4 and transferred to the spiral tube 505 inside the slider assembly 5 for oil cooling circulation. Meanwhile, the cooling plates 6 fixedly mounted on both sides of nut 501 receive current through power port 604, causing the N-type semiconductor 602 to flow to the node of the P-type semiconductor 603, thus activating the electronic circuitry. The transition from a low energy level to a high energy level requires the absorption of heat, and the oil and water are circulated through the spiral tube 505 to achieve a cooling effect. When the slider assembly 5 is pulled by the threaded screw 301, the wires and water pipes of the connected cooling plate 6 and the water inlet 503 and outlet 504 above the slider assembly 5 are pulled and moved along with the tank chain 103. The tank chain 103 and the bottom guide rail 102 are limited to move until the movement and transmission effect is not affected, and the cooling effect remains in a highly efficient state.

[0033] By following the steps outlined above, you can complete the use of the cooled ball screw.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A cooled ball screw, characterized in that: Includes pump box integrated unit (4), slider assembly (5) and cooling plate (6); The pump box integrated machine (4) includes an oil tank (401), a water pump (402) is fixedly installed on the top surface of the oil tank (401), and a set of water pipes are opened on both sides of the water pump (402), one set of water pipes is connected to the top surface of the water tank, and the other set of water pipes is connected to two sets of slider assemblies (5). The slider assembly (5) includes two sets of nuts (501), each set of nuts (501) has a set of spiral tubes (505) inside, and the front end of each set of spiral tubes (505) is connected to a water inlet (503), the tail end of each set of spiral tubes (505) is connected to a water outlet (504), and a support plate (502) is fixedly installed on the top outer wall of each set of nuts (501). The cooling chip (6) includes two sets of ceramic plates (601), and the outer wall of one set of ceramic plates (601) is fixedly installed on the outer walls of both sides of the nut (501). Multiple sets of N-type semiconductors (602) and P-type semiconductors (603) are equidistantly installed on the inner wall of the ceramic plate (601), and another set of ceramic plates (601) is fixedly installed on the top of the N-type semiconductors (602) and P-type semiconductors (603). A set of power ports (604) is opened on one side of the cooling chip. The cooling chip (6) is divided into four sets, and is equidistantly installed on the outer walls of both sides of the two sets of nuts (501).

2. The cooled ball screw according to claim 1, characterized in that: The power port (604) inside the cooling chip (6) is connected to a wire, and the wire is inserted and moved inside the tank chain (103). The tank chain (103) also has a water inlet (503) and a water outlet (504) connected to a water pipe, and the tank chain (103) is movably installed directly above the guide rail (102).

3. The cooled ball screw according to claim 2, characterized in that: The guide rail (102) is divided into two groups and is fixedly installed at equal intervals at the top center of the tabletop (101) of the table (1).

4. The cooled ball screw according to claim 3, characterized in that: A motor (3) is fixedly installed on the side of the desktop (101), and a threaded screw (301) is movably connected to the middle of one side of the motor (3). The threaded screw (301) extends to the other side of the desktop (101) and extends to the middle of the support base (302). The support base (302) is fixedly installed on the desktop (101). Two sets of slide rails (202) are installed on the top surface of the desktop (101), and a set of limiting blocks (203) are fixedly installed at both ends of each set of slide rails (202). Each set of limiting blocks (203) is fixedly installed on the front surface of the desktop (101). Two sets of guide rails (102) are fixedly installed on the top surface of the desktop (101), and the two sets of guide rails (102) are installed in the gap between the two sets of slide rails (202). Two sets of tank chains (103) are movably installed inside each set of guide rails (102).

5. The cooled ball screw according to claim 4, characterized in that: The top of the slide rail (202) is provided with a slide table (2), the bottom of which is movably connected to each set of slide rails (202) by a buckle, and an operating table (201) is fixedly installed on the top of the buckle.

6. The cooled ball screw according to claim 1, characterized in that: The pump box unit (4) is located on the outside side of the table (1), and the water pipe connected to the water pump (402) above the pump box unit (4) is connected in series with the spiral tube (505) inside each set of nuts (501) and fixedly installed on the top of the table (101).