High-temperature-resistant internal circulation ball screw assembly

Abstract

The utility model relates to a ball screw assembly, in particular to a high-temperature-resistant internal circulation ball screw assembly which comprises a screw shaft, a nut body, circulators, steel balls, a sealing washer, a mounting ring, a rotating ring and a brush, the nut body is arranged on the outer side of the screw shaft, the circulators are arranged on the nut body, and the steel balls are arranged on the mounting ring. The steel ball is arranged in the nut body, the sealing washers are arranged at the two ends of the nut body, the installation ring is connected to the nut body, the rotating ring is rotatably installed on one side of the installation ring, the brush arranged on the outer side of the lead screw shaft in a sleeving mode is arranged on the rotating ring, and the nut body is connected with the nut body. And a driving mechanism for driving the rotating ring to rotate is arranged on the mounting ring. The circulator made of the metal SUS304 material and the sealing washer made of the PEEK material are adopted, so that the strength, the corrosion resistance and the temperature adaptability of the whole structure are enhanced.

Description

Technical Field

[0001] This utility model relates to a ball screw assembly, and more particularly to a high-temperature resistant internal circulation ball screw assembly. Background Technology

[0002] A ball screw is a mechanical component that converts rotary motion into linear motion or vice versa. It is widely used in various devices requiring precise positioning and efficient transmission, such as CNC machine tools, automated assembly lines, and robotics. Its working principle is based on a series of small steel balls placed between the screw shaft and the nut. The rolling of these balls between them reduces friction, thereby achieving efficient energy transfer.

[0003] A ball screw mainly consists of a screw, a nut, balls, and a reversing mechanism. The screw is a long rod with specific threads, and the nut mates with it, also having matching threads and channels designed to hold the balls. The balls are located in helical grooves between the screw and nut to reduce friction between them. The reversing mechanism ensures that the balls form a closed loop between the screw and nut. Additionally, seals are crucial components, preventing contaminants from entering and affecting operation.

[0004] Traditional ball screw assemblies typically use recirculators made of ordinary materials, which lack sufficient corrosion resistance and strength, making them susceptible to damage in harsh environments and affecting their service life. Furthermore, inadequate sealing measures fail to effectively prevent external dust and debris from entering the interior, accelerating ball wear, increasing frictional resistance, and reducing transmission efficiency. Simultaneously, during prolonged operation, dust and impurities easily accumulate on the screw shaft surface, further increasing frictional resistance and potentially causing additional energy loss. Utility Model Content

[0005] To overcome the shortcomings of ordinary material circulators being easily damaged in harsh environments, affecting their service life, and the easy accumulation of dust and impurities on the surface of the lead screw shaft, which increases frictional resistance, this utility model provides a high-temperature resistant internal circulation ball screw assembly.

[0006] A high-temperature resistant internal circulation ball screw assembly includes a screw shaft, a nut body, circulators, steel balls, sealing washers, a mounting ring, a rotating ring, and a brush. The nut body is located on the outside of the screw shaft. Multiple circulators are mounted on the nut body. The steel balls are located inside the nut body. Sealing washers are located at both ends of the nut body. The mounting ring is connected to the nut body. The rotating ring is rotatably mounted on one side of the mounting ring. The brush is sleeved on the outside of the screw shaft on the rotating ring. The mounting ring has a drive mechanism for driving the rotating ring to rotate, and the drive mechanism is used to drive the brush to rotate to clean the screw shaft.

[0007] Furthermore, the drive mechanism includes a tapered tube, a fan blade, a transmission component, a small pulley, and a belt. Multiple tapered tubes are mounted on the mounting ring, and each tapered tube contains a fan blade. The multiple fan blades are connected to each other via the transmission component. One of the fan blades is connected to the small pulley, and the belt is provided between the small pulley and the rotating ring.

[0008] Furthermore, the transmission component includes a transmission wheel and a transmission belt, with one transmission wheel connected to each of the fan blades, and the transmission belt wound around multiple transmission wheels.

[0009] Furthermore, it also includes a positioning block, a limiting ring, and a screw. The inner side of the rotating ring is provided with a positioning groove, and the outer side of the brush is provided with a positioning block that is adapted to the positioning groove. The limiting ring is provided on the side of the rotating ring facing the positioning groove. The limiting ring is fixed on the rotating ring by the screw. The limiting ring is used to prevent the brush from slipping off the rotating ring.

[0010] Furthermore, it also includes a protective cover, which is provided on the outside of the mounting ring, and the transmission component is located on the inside of the protective cover. The protective cover is provided with ventilation holes.

[0011] Furthermore, the diameters of both the small pulley and the transmission wheel are smaller than the minimum diameter of the tapered tube.

[0012] Furthermore, the rotating ring is provided with elongated through holes spaced apart circumferentially.

[0013] Furthermore, the circulator is made of SUS304 metal.

[0014] Furthermore, the sealing gasket is made of PEEK.

[0015] The beneficial effects of this utility model are as follows: By using a circulator made of SUS304 metal and a sealing gasket made of PEEK material, this utility model not only enhances the overall structural strength, corrosion resistance, and temperature adaptability, but also effectively prevents the intrusion of external dust and debris, protects the normal operation of the internal steel balls, and extends their service life. The drive mechanism utilizes airflow to drive the brush rotation, achieving automatic cleaning of the lead screw shaft surface, maintaining its smoothness, reducing frictional resistance, improving equipment operating efficiency, and reducing energy consumption. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is an exploded view of a partial structure of this utility model.

[0018] Figure 3This is a three-dimensional structural diagram of the conical tube, fan blade, and brush of this utility model.

[0019] Figure 4 This is a rear view of the conical tube, fan blade, brush, drive wheel, and drive belt of this utility model.

[0020] Figure 5 This is an exploded view of the rotating ring, brush, limiting ring, and screw of this utility model.

[0021] Figure 6 This is a three-dimensional structural diagram of the protective cover of this utility model.

[0022] In the attached diagram: 1: Lead screw shaft, 2: Nut body, 3: Circulator, 4: Steel ball, 5: Sealing washer, 6: Mounting ring, 7: Tapered tube, 8: Fan blade, 9: Small pulley, 10: Rotary ring, 11: Belt, 12: Brush, 13: Drive wheel, 14: Drive belt, 15: Positioning groove, 16: Positioning block, 17: Limiting ring, 18: Screw, 19: Protective cover, 20: Ventilation hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] A high-temperature resistant internal circulation ball screw assembly, such as Figures 1-3 As shown, the device includes a lead screw shaft 1, a nut body 2, a circulator 3, steel balls 4, sealing washers 5, a mounting ring 6, a rotating ring 10, and a brush 12. The nut body 2 is located on the outside of the lead screw shaft 1. Multiple circulators 3 are mounted on the nut body 2. The circulators 3 are made of SUS304 metal. Steel balls 4 are located inside the nut body 2 and are positioned between the helical gap between the nut body 2 and the circulators 3. Sealing washers 5 are provided at both ends of the nut body 2 to seal the gap between the lead screw shaft 1 and the nut body 2. The sealing washers 5 are made of PEEK. A mounting ring 6 is fixedly connected to the outside of the nut body 2. A rotating ring 10 is rotatably mounted on one side of the mounting ring 6. The rotating ring 10 has elongated through holes spaced around its circumference. A brush 12 is mounted on the rotating ring 10 and is fitted onto the outside of the lead screw shaft 1. The brush 12 is in contact with the lead screw shaft 1. A drive mechanism is provided on the mounting ring 6 to drive the rotating ring 10 to rotate and clean the lead screw shaft 1.

[0025] like Figures 3-4As shown, the drive mechanism includes a tapered tube 7, a fan blade 8, a transmission component, a small pulley 9, and a belt 11. Six tapered tubes 7 are circumferentially spaced on the mounting ring 6. Each tapered tube 7 has a fan blade 8 rotatably mounted inside it via a bracket and bearing. The six fan blades 8 are connected to each other by the transmission component. One of the fan blades 8 is coaxially connected to a small pulley 9 at the end away from the transmission component. A groove is provided on the outer side of the rotating ring 10. A belt 11 is provided between the small pulley 9 and the groove of the rotating ring 10.

[0026] like Figure 4 As shown, the transmission components include a transmission wheel 13 and a transmission belt 14. Each fan blade 8 is connected to a transmission wheel 13, and a transmission belt 14 is wound around the six transmission wheels 13. The diameters of the small pulley 9 and the transmission wheels 13 are both smaller than the minimum diameter of the tapered tube 7 to avoid the small pulley 9 and the transmission wheels 13 from blocking the airflow.

[0027] When the lead screw 1 rotates, the linear movement of the nut body 2 is achieved through the rolling contact between the steel balls 4 inside the nut body 2 and the helical grooves on the lead screw 1. Under the action of the circulator 3, the steel balls 4 circulate within the helical gap between the nut body 2 and the lead screw 1, reducing frictional resistance and improving efficiency and durability. Here, the circulator 3 is made of SUS304 stainless steel, which can be used in high-temperature environments and has good corrosion resistance and strength, adapting to various working environments. The sealing washers 5 at both ends of the nut body 2 are used to seal the gap between the lead screw 1 and the nut body 2, preventing external dust and debris from entering and affecting the normal operation of the steel balls 4. The sealing washers 5 are made of PEEK material and can withstand a certain temperature range, enhancing the service life of the overall device. When the nut body 2 moves rapidly along the lead screw shaft 1, and its direction of movement is consistent with the flaring direction of the tapered tube 7, air is forced to enter from the flared end of the tapered tube 7. After being accelerated through the narrow opening of the tapered tube 7, it impacts the windward side of the fan blade 8, causing the fan blade 8 to rotate. The transmission wheel 13 rotates accordingly, and the power is concentrated and transmitted to the small pulley 9 via the transmission belt 14. Multiple fan blades 8 rotate simultaneously, thereby increasing the torque of the small pulley 9. The small pulley 9 then drives the rotating ring 10 to rotate via the belt 11. The rotating ring 10 is equipped with a brush 12, which rotates with the rotation of the rotating ring 10 to clean the surface of the lead screw shaft 1, removing any dust and impurities that may be attached, ensuring the smoothness and smooth operation of the lead screw shaft 1. In addition, the elongated through holes on the rotating ring 10 help with heat dissipation and ventilation, maintaining the good condition of the internal parts.

[0028] like Figure 6As shown, it also includes positioning blocks 16, limiting rings 17, and screws 18. The inner side of the rotating ring 10 is provided with six positioning grooves 15 spaced circumferentially. The outer side of the brush 12 is provided with six positioning blocks 16 that are adapted to the positioning grooves 15. The brush 12 and the positioning blocks 16 are integrally formed. The brush 12 is installed in the rotating ring 10 through the cooperation of the positioning blocks 16 and the positioning grooves 15. The side of the rotating ring 10 facing the positioning grooves 15 is provided with a limiting ring 17. The limiting ring 17 is fixed to the rotating ring 10 by screws 18. After the brush 12 is installed, the limiting ring 17 limits the brush 12 to prevent the positioning blocks 16 on the brush 12 from sliding out of the positioning grooves 15.

[0029] The brush 12 is installed by the positioning block 16 and the positioning groove 15 inside the rotating ring 10, and is further fixed by the limiting ring 17 and the screw 18 to ensure that the brush 12 will not fall out of position due to high-speed rotation. When the brush 12 needs to be replaced, simply loosen the screw 18 that fixes the limiting ring 17, and then remove the limiting ring 17 to easily take out the brush 12 for replacement.

[0030] like Figure 6 As shown, it also includes a protective cover 19. The protective cover 19 is provided on the outside of the mounting ring 6. The transmission component is located inside the protective cover 19. The protective cover 19 is provided with six ventilation holes 20 at intervals. The six ventilation holes 20 correspond to the six conical tubes 7 respectively.

[0031] The protective cover 19 is designed not only to protect the internal transmission components from external factors, but also to achieve good air circulation through the ventilation holes 20, which helps to regulate the internal temperature and extend the equipment life.

[0032] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A high-temperature resistant internal circulation ball screw assembly, comprising: A lead screw shaft (1) is provided with a nut body (2) on the outside of the lead screw shaft (1); A circulator (3) is provided on the nut body (2); Steel ball (4), the steel ball (4) is provided inside the nut body (2); Sealing gaskets (5) are provided at both ends of the nut body (2); Its characteristic is that it further includes: Mounting ring (6), the mounting ring (6) is connected to the nut body (2); Rotary ring (10), the rotating ring (10) is rotatably mounted on one side of the mounting ring (6); A brush (12) is provided on the rotating ring (10) and sleeved on the outside of the lead screw shaft (1); and The mounting ring (6) is provided with a drive mechanism to drive the rotating ring (10) to rotate. The drive mechanism is used to drive the brush (12) to rotate and clean the lead screw shaft (1).

2. A high-temperature resistant internal circulation ball screw assembly according to claim 1, characterized in that, The drive mechanism includes: A tapered tube (7), and a plurality of tapered tubes (7) are mounted on the mounting ring (6); Fan blades (8), each of the tapered tubes (7) is equipped with fan blades (8), and multiple fan blades (8) are connected by transmission components; One of the fan blades (8) is connected to the small pulley (9); and A belt (11) is provided between the small pulley (9) and the swivel (10).

3. A high-temperature resistant internal circulation ball screw assembly according to claim 2, characterized in that, The transmission components include: A drive wheel (13), one of the drive wheels (13) is connected to each of the fan blades (8); and A drive belt (14) is wound around a plurality of drive pulleys (13).

4. A high-temperature resistant internal circulation ball screw assembly according to claim 1, characterized in that, Also includes: The positioning block (16) is provided with a positioning groove (15) on the inner side of the rotating ring (10) and the positioning block (16) adapted to the positioning groove (15) is provided on the outer side of the brush (12); A limiting ring (17) is provided on the side of the rotating ring (10) facing the positioning groove (15); and The screw (18) and the limiting ring (17) are fixed to the rotating ring (10) by the screw (18). The limiting ring (17) is used to prevent the brush (12) from slipping off the rotating ring (10).

5. A high-temperature resistant internal circulation ball screw assembly according to claim 3, characterized in that, Also includes: The protective cover (19) is provided on the outside of the mounting ring (6), the transmission component is located on the inside of the protective cover (19), and the protective cover (19) is provided with ventilation holes (20).

6. A high-temperature resistant internal circulation ball screw assembly according to claim 3, characterized in that, The diameters of the small pulley (9) and the transmission wheel (13) are both smaller than the minimum diameter of the tapered tube (7).

7. A high-temperature resistant internal circulation ball screw assembly according to claim 1, characterized in that, The rotating ring (10) is provided with elongated through holes at intervals around its circumference.

8. A high-temperature resistant internal circulation ball screw assembly according to claim 1, characterized in that, The circulator (3) is made of metal SUS304.

9. A high-temperature resistant internal circulation ball screw assembly according to claim 1, characterized in that, The sealing gasket (5) is made of PEEK.

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