High-precision dustproof ball screw
By designing a structure that combines the cannulated bead reverser and protective shell on the ball screw, cleaning and lubrication are achieved by using the movement of the linkage plate and the extruded inclined plate, the problem of lubricating oil loss during dust prevention in the prior art is solved, and the transmission accuracy and service life are improved.
Patent Information
- Application Number
- CN202421358170.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The existing ball screw pair will lose lubricant during the dustproof process, resulting in increased friction, accelerated wear and reduced operating efficiency, and lack of effective solutions.
A high-precision dust-proof ball screw is designed, which adopts a structure that combines the cannulated bead reverser and the protective shell. The cleaning block and cleaning blade are driven to approach the surface of the screw by moving the linkage plate and the extruded inclined plate to remove dust and reapply lubricating oil by applying the rotary beads.
It effectively prevents the accumulation of dust, reduces friction, improves the transmission accuracy and service life, and ensures sufficient application of lubricating oil and improves the operating efficiency of the ball screw.
Smart Images
Figure CN222791357U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ball screws, in particular to a high-precision dustproof ball screw. Background Art
[0002] In the field of CNC machine tools and other precision machinery, the ball screw pair, as the key execution unit of the drive system, plays a vital role in ensuring and improving the processing accuracy, work efficiency and comprehensive performance of the entire equipment. However, during long-term use, the ball screw pair will inevitably face an important problem - dust prevention.
[0003] In the prior art, the dust prevention method of the ball screw pair usually uses a scraper or a brush to scrape off the dust and garbage on the inner wall of the screw thread groove. Although this method can remove dust to a certain extent, since the outer surface of the screw is usually coated with lubricating oil to reduce friction and wear, when the scraper is used for cleaning, the lubricating oil on the surface of the screw will also be cleaned. The loss of lubricating oil has a significant negative impact on the use of the ball screw. First, the reduction of lubricating oil will lead to increased friction between the screw and the nut, thereby increasing wear and shortening the service life of the ball screw. Secondly, the lack of lubricating oil will reduce the operating efficiency of the ball screw and reduce the overall processing accuracy and work efficiency of the CNC machine tool. In response to the problems in the relevant technology, no effective solution has been proposed. Therefore, it is necessary to propose a high-precision dustproof ball screw to solve the above-mentioned problems. Utility Model Content
[0004] In view of the problems in the related technology, the utility model proposes a high-precision dust-proof ball screw to overcome the above technical problems existing in the existing related technology.
[0005] To this end, the specific technical solutions adopted by the utility model are as follows:
[0006] A high-precision dust-proof ball screw comprises a screw, a tube-type ball return device is slidably installed on the surface of the screw, a protective shell is fixedly connected to the surface of the tube-type ball return device, contraction grooves are opened on the two side surfaces of the protective shell, a telescopic spring is fixedly connected to the inner wall of the contraction groove, a telescopic block is fixedly connected to the end of the telescopic spring, a transmission inclined plate is fixed to one side of the telescopic block, a cleaning block is fixedly connected to one end of the transmission inclined plate, a cleaning scraper is fixedly connected to the surface of the cleaning block, a transmission groove is opened on one side of the contraction groove, a linkage plate is slidably installed inside the transmission groove, extrusion inclined plates are fixedly connected to both ends of the linkage plate, an oil tank is fixedly installed on the surface of the protective shell, an oil filling box is fixedly installed on one side of the cleaning block, a smear rotating ball is rotatably installed on one side of the oil filling box, oil pipelines are fixedly connected to both sides of the oil tank, and the ends of the oil pipelines are fixedly installed on the oil filling box.
[0007] Furthermore, in order to realize the extrusion inclined plate to squeeze and contract the transmission inclined plate after the extrusion inclined plate is moved, the inclined surface of the transmission inclined plate cooperates with the extrusion inclined plate, and a limiting block is fixedly connected to one side of the extrusion inclined plate.
[0008] Furthermore, in order to facilitate the movement of the linkage plate in the transmission groove, a push groove is opened on the surface of the protective shell, one end of the push groove is through-connected with the transmission groove, and a push rod is fixedly connected to the surface of one side of the linkage plate, and the push rod is slidably installed in the push groove.
[0009] Furthermore, in order to realize the detachable replacement of the cleaning scraper, threaded holes are opened on both side surfaces of the cleaning block and the cleaning scraper, and the cleaning scraper is fixedly mounted on the surface of the cleaning block by bolts.
[0010] Furthermore, in order to inject lubricating oil into the oil tank, an oil filling pipe is fixedly connected to the surface of the oil tank, and a sealing cap is installed at the end of the oil filling pipe.
[0011] Furthermore, in order to achieve a fixed connection between the oil filling box and the cleaning block, a support frame is fixedly connected to one side surface of the oil filling box, and the oil filling box is fixedly mounted on the cleaning block through the support frame.
[0012] Furthermore, in order to prevent the protective housing from falling off when the insert-tube type bead return device drives the protective housing to move on the lead screw, one end of the lead screw is fixedly connected to a limit ring.
[0013] The beneficial effects of the utility model are as follows: through the movement of the linkage plate in the transmission groove, the extrusion inclined plate is driven to extrude the transmission inclined plate on one side of the protective shell, and after the transmission inclined plate is extruded, the cleaning block is driven to move toward the surface of the screw, so that the cleaning scraper and the coating ball on the cleaning block are close to the threaded groove on the surface of the screw, and when the screw rotates, the cleaning scraper scrapes the wall to remove dust on its surface, and after dust removal, the coating ball is used to coat the surface with lubricating oil, and the cleaning block on the other side of the protective shell is away from the surface of the screw by the elastic force of the telescopic spring, preventing the cleaning scraper from scraping off the coated lubricating oil, which can effectively remove dust and reduce the friction during the transmission of the ball screw pair, thereby improving the transmission accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a schematic diagram of the surface structure of a high-precision dustproof ball screw according to an embodiment of the utility model;
[0016] Figure 2It is a schematic diagram of the internal cross-section of a protective housing in a high-precision dustproof ball screw according to an embodiment of the utility model;
[0017] Figure 3 It is a schematic diagram of the installation structure of a cleaning scraper in a high-precision dustproof ball screw according to an embodiment of the utility model;
[0018] Figure 4 It is a side view of a high-precision dustproof ball screw according to an embodiment of the utility model.
[0019] In the figure:
[0020] 1. Screw; 2. Insert-tube bead return device; 3. Protective shell; 4. Contraction groove; 5. Telescopic spring; 6. Telescopic block; 7. Transmission ramp; 8. Cleaning block; 9. Cleaning scraper; 10. Transmission groove; 11. Linkage plate; 12. Extrusion ramp; 13. Oil tank; 14. Oil filling box; 15. Applicator bead; 16. Oil delivery pipe; 17. Limit block; 18. Push groove; 19. Push rod; 20. Threaded hole; 21. Oil filling pipe; 22. Sealing cover; 23. Support frame; 24. Limit ring. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] According to an embodiment of the utility model, a high-precision dustproof ball screw is provided.
[0023] Embodiment 1:
[0024] like Figure 1-Figure 4As shown, according to an embodiment of the utility model, a high-precision dust-proof ball screw 1 includes a metal screw 1, a surface of the screw 1 is slidably installed with a tube-type ball return device 2 for rolling transmission on the surface of the screw 1; the surface of the tube-type ball return device 2 is fixedly connected to a protective shell 3, and a pair of contraction grooves 4 are opened on the two side surfaces of the protective shell 3, and a telescopic spring 5 is fixedly connected to the inner wall of each contraction groove 4, and a telescopic block 6 is fixedly connected to the end of the telescopic spring 5, and the width of the telescopic block 6 matches the contraction groove 4; a transmission inclined plate 7 is fixed on one side of the telescopic block 6, and a cleaning block 8 is fixedly connected to one end of the transmission inclined plate 7, and a cleaning scraper 9 is fixedly connected to the surface of the cleaning block 8, a transmission groove 10 is opened on one side of the contraction groove 4 inside the protective shell 3, and a linkage plate 11 is slidably installed inside the transmission groove 10, and a pair of extrusion inclined plates 12 are fixedly connected at both ends of the linkage plate 11, and a limited block 17 is fixedly connected to one side of the extrusion inclined plate 12, and the extrusion inclined plate 12 is fixedly connected to a limited block 17 installed on the transmission inclined plate 7. The side, and cooperate with the inclined surface of the transmission inclined plate 7, drive the extrusion inclined plate 12 to extrude the transmission inclined plate 7 through the movement of the linkage plate 11, and the transmission inclined plate 7 drives the telescopic block 6 to shrink and move into the contraction groove 4 after being squeezed, so that the cleaning block 8 drives the cleaning scraper 9 to stick to the threaded groove on the surface of the screw 1; the surface of the protective shell 3 is fixedly installed with an oil tank 13, and one side of the cleaning block 8 is fixedly installed with an oil filling box 14, and the two oil filling boxes 14 are respectively installed on the upper and lower sides of the cleaning block 8 on both sides of the protective shell 3; one side of the oil filling box 14 is rotatably installed with a smearing rotating bead 15, and the smearing rotating bead 15 and the cleaning scraper 9 are both matched with the threaded groove on the surface of the screw 1; a pair of oil delivery pipes 16 are fixedly connected on both sides of the oil tank 13, and the end of the oil delivery pipe 16 is fixedly installed on the oil filling box 14, which is used to inject lubricating oil into the oil filling box 14, and the cleaning block 8 moves and drives the surface of the smearing rotating bead 15 to stick to the surface of the screw 1, and the smearing rotating bead 15 rotates to smear the lubricating oil in the oil filling box 14 on the surface of the screw 1.
[0025] like Figure 1-Figure 4 As shown, a push groove is opened on the surface of the protective shell 3, one end of the push groove is connected with the transmission groove 10, and a push rod 19 is fixedly connected to the surface of the linkage plate 11 on one side, and the push rod 19 is slidably installed in the push groove, which is used to drive the linkage plate 11 to move in the transmission groove 10 through the push rod 19; threaded holes 20 are opened on the two side surfaces of the cleaning block 8 and the cleaning scraper 9, and the cleaning scraper 9 is fixedly installed on the surface of the cleaning block 8 by bolts, which is used to realize the disassembly and replacement of the cleaning scraper 9; an oil filling pipe 21 is fixedly connected to the surface of the oil tank 13, and a sealing cover 22 is installed at the end of the oil filling pipe 21. After opening the sealing cover 22, lubricating oil is injected into the oil tank 13 through the oil filling pipe 21; a support frame 23 is fixedly connected to the surface of the oil filling box 14, and the oil filling box 14 is fixedly installed on the cleaning block 8 through the support frame 23; a limiting ring 24 is fixedly connected to one end of the screw 1, which is used to prevent the insert-type bead return device 2 from falling off when driving the protective shell 3 to move on the screw 1.
[0026] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.
[0027] In summary, with the aid of the above-mentioned technical scheme of the utility model, the linkage plate 11 is moved in the transmission groove 10 in the opposite direction of the transmission of the protective shell 3 and the insert tube type bead return device 2 by pushing the rod 19, driving the extrusion inclined plate 12 at one end to squeeze the transmission inclined plate 7 on one side of the protective shell 3, and after the transmission inclined plate 7 is squeezed, it drives the telescopic block 6 and the telescopic spring 5 to shrink and move into the contraction groove 4, so that the cleaning block 8 drives the cleaning scraper 9 to stick to the threaded groove on the surface of the screw 1, and drives one side of the smear rotating bead 15 to stick to the surface of the screw 1, and the extrusion inclined plate 12 at the other end of the linkage plate 11 is away from the transmission inclined plate 7 on one side of the protective shell 3, and does not squeeze the telescopic block 6 on one side, and the telescopic block 6 that is not squeezed Through the elastic force of the bottom telescopic spring 5, the cleaning block 8 is driven to move in the direction away from the surface of the screw 1. The cleaning scraper 9 and the coating ball 15 on the surface of the cleaning block 8 are not in contact with the surface of the screw 1. When the screw 1 rotates and drives the insert-tube type ball return device 2 and the protective shell 3 to transmit on its surface, the cleaning scraper 9 close to one side of the surface of the screw 1 scrapes the dust on its surface, and the coating ball 15 on one side re-applies lubricating oil to the surface of the screw 1 after cleaning, so as to achieve the dust-proof and lubrication effect of the ball screw 1. When the screw 1 needs to rotate in the opposite direction for transmission, the push rod 19 can be used to drive the linkage plate 11 to move in the opposite direction of the above operation, so as to achieve dust removal and lubrication during reverse transmission.
[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A high-precision dustproof ball screw, characterized in that: The invention comprises a lead screw (1), a tube-type bead return device (2) is slidably mounted on the surface of the lead screw (1), a protective shell (3) is fixedly connected to the surface of the tube-type bead return device (2), contraction grooves (4) are opened on the two side surfaces of the protective shell (3), a telescopic spring (5) is fixedly connected to the inner wall of the contraction groove (4), a telescopic block (6) is fixedly connected to the end of the telescopic spring (5), a transmission inclined plate (7) is fixedly connected to one side of the telescopic block (6), a cleaning block (8) is fixedly connected to one end of the transmission inclined plate (7), and a cleaning scraper is fixedly connected to the surface of the cleaning block (8). (9), a transmission groove (10) is opened on one side of the contraction groove (4), a linkage plate (11) is slidably installed inside the transmission groove (10), and the two ends of the linkage plate (11) are fixedly connected with extrusion inclined plates (12), an oil tank (13) is fixedly installed on the surface of the protective shell (3), an oil filling box (14) is fixedly installed on one side of the cleaning block (8), and a smear rotating bead (15) is rotatably installed on one side of the oil filling box (14), and oil delivery pipes (16) are fixedly connected to both sides of the oil tank (13), and the ends of the oil delivery pipes (16) are fixedly installed on the oil filling box (14).
2. A high-precision dustproof ball screw according to claim 1, characterized in that: The transmission inclined plate (7) matches the inclined surface of the extrusion inclined plate (12), and one side of the extrusion inclined plate (12) is fixedly connected to a limiting block (17).
3. A high-precision dustproof ball screw according to claim 1, characterized in that: A push groove (18) is formed on the surface of the protective shell (3), one end of the push groove (18) is connected to the transmission groove (10), and a push rod (19) is fixedly connected to one side surface of the linkage plate (11), and one end of the push rod (19) is slidably installed in the push groove (18).
4. A high-precision dustproof ball screw according to claim 1, characterized in that: Threaded holes (20) are provided on both side surfaces of the cleaning block (8) and the cleaning scraper (9), and the cleaning scraper (9) is fixedly mounted on the surface of the cleaning block (8) by means of bolts.
5. The high-precision dustproof ball screw according to claim 1, characterized in that: An oil filling pipe (21) is fixedly connected to the surface of the oil tank (13), and a sealing cover (22) is installed at the end of the oil filling pipe (21).
6. A high-precision dustproof ball screw according to claim 1, characterized in that: A support frame (23) is fixedly connected to one side surface of the oil filling box (14), and the oil filling box (14) is fixedly mounted on the cleaning block (8) via the support frame (23).
7. The high-precision dustproof ball screw according to claim 1, characterized in that: One end of the lead screw (1) is fixedly connected to a limiting ring (24).