A ball screw with lubrication function
By designing a lubrication mechanism on the ball screw, the supply of lubricating oil is automatically controlled, solving the problems of cumbersome traditional manual lubrication operations and uneven lubrication, and achieving efficient and uniform lubrication.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI SANSTER TECH CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional ball screw lubrication methods rely on manual application or external lubrication pumps, which are cumbersome to operate and difficult to control the amount of oil precisely, especially in large equipment or confined spaces where there is insufficient or excessive lubrication.
A ball screw with a lubrication mechanism was designed, including a gearbox, an elastic oil bladder, an oil inlet pipe, an oil outlet, and a turning mechanism. The supply of lubricating oil is controlled by rotating the handle to achieve automated lubrication.
It achieves simplicity and precision in lubrication operation, ensuring uniform distribution of lubricating oil at the contact points between the rolling balls and the lead screw, and adapting to lubrication needs under different working conditions.
Smart Images
Figure CN224453566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ball screw technology, specifically a ball screw with lubrication function. Background Technology
[0002] In the field of mechanical transmission, the rolling ball screw, as a key component that converts rotary motion into linear motion, is widely used in CNC machine tools, automated production lines, precision instruments and other equipment due to its advantages such as high precision, high transmission efficiency and low frictional resistance.
[0003] Its core working principle is to achieve smooth movement of the nut along the axial direction of the screw by cooperating with the rolling balls inside the nut and the thread groove of the screw body, thereby driving the load to complete precise positioning or reciprocating motion. The rolling ball screw introduces rolling balls between the screw and the nut, which transforms sliding friction into rolling friction, greatly improving the transmission performance.
[0004] Traditional ball screw lubrication methods often rely on manual periodic application of lubricating oil or the use of an external lubrication pump for oil supply. Therefore, manual application not only requires disassembling related parts, but also involves cumbersome and time-consuming operations. Especially in large equipment or confined spaces, adding lubricating oil is extremely difficult, making it hard to accurately control the amount of oil, and easily leading to insufficient lubrication or excessive waste.
[0005] Therefore, a ball screw with lubrication function is proposed to address the above problems. Utility Model Content
[0006] The purpose of this invention is to provide a ball screw with a lubrication function to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A ball screw with lubrication function includes a screw body and a nut, wherein the nut is provided with rolling balls inside and a lubrication mechanism is provided on the outside of the nut;
[0009] The lubrication mechanism includes a rotating box, an elastic oil bladder installed inside the rotating box, an oil inlet pipe fixedly connected to the top of the rotating box, a sealing cover snapped into the inside of the oil inlet pipe, an oil passage pipe fixedly connected to the bottom of the elastic oil bladder, an oil outlet hole opened in the inner wall of the nut, a movable ring fixedly connected to the outside of the rotating box, a pressing rod movably snapped into the inside of the movable ring, a force-bearing cover fixedly connected to the outside of the pressing rod, and a return spring sleeved on the pressing rod.
[0010] As a further optimization of this utility model, the outer side of the operating box is provided with a toggle mechanism, the toggle mechanism includes a connecting plate, the outer side of the connecting plate is provided with a rotating handle, the outer side of the rotating handle is fixedly connected with a rotating shaft, and the outer side of the rotating shaft is fixedly connected with a toggle rod.
[0011] As a further optimization of this utility model, the nut is mounted on the outside of the lead screw body via its internal rolling balls, and the operating box is fixed and symmetrically distributed on the outside of the nut.
[0012] As a further optimization of this utility model, the bottom of the oil inlet pipe is fixedly connected to the inside of the elastic oil bladder, and a one-way valve is provided inside the oil inlet pipe.
[0013] As a further optimization of this utility model, the oil passage pipes are symmetrically distributed on the outside of the elastic oil bladder, and the end of the oil passage pipe away from the elastic oil bladder is fixedly connected to the inside of the oil outlet hole.
[0014] As a further optimization of this utility model, the reset spring is located between the force-bearing cover and the extrusion rod, and the force-bearing cover is movably connected to the outside of the operating box, while the end of the extrusion rod away from the force-bearing cover is located on the outside of the elastic oil bladder.
[0015] As a further optimization of this utility model, the connecting plates are fixed and symmetrically distributed on the outside of the operating box, the rotating shaft is rotatably connected between the two connecting plates through a rotating handle, and the actuating rod and the force-bearing cover are on the same plane.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] In this invention, by setting up a lubrication mechanism, lubricating oil can be easily added to the elastic oil bladder using the oil inlet pipe. The sealing cover can effectively prevent lubricating oil leakage and impurities from entering. When lubrication is required, the elastic oil bladder can be easily squeezed with the help of components such as the extrusion rod and the force-bearing cover, so that the lubricating oil enters the contact part between the rolling ball and the lead screw body through the oil pipe and the oil outlet hole. The operation is simple and efficient. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the outer side of the nut of this utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of the nut of this utility model;
[0021] Figure 4 This is a schematic diagram of the internal structure of the operating box of this utility model;
[0022] Figure 5 This is a schematic diagram of the external structure of the operating box of this utility model;
[0023] Figure 6 This utility model Figure 5 Enlarged view of the structure at point A in the middle.
[0024] In the diagram: 1. Lead screw body;
[0025] 2. Nut; 21. Ball bearing;
[0026] 3. Lubrication mechanism; 31. Rotating box; 32. Elastic oil bladder; 33. Oil inlet pipe; 34. Sealing cover; 35. Oil passage pipe; 36. Oil outlet hole; 37. Moving ring; 38. Extrusion rod; 39. Force-bearing cover; 310. Return spring;
[0027] 4. Actuating mechanism; 41. Connecting plate; 42. Rotating handle; 43. Rotating shaft; 44. Actuating lever. Detailed Implementation
[0028] 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.
[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0030] Please see Figures 1-6 This utility model provides a technical solution:
[0031] A ball screw with lubrication function includes a screw body 1 and a nut 2. The nut 2 has a ball bearing 21 inside and a lubrication mechanism 3 on the outside.
[0032] The lubrication mechanism 3 includes a rotating box 31, an elastic oil bladder 32 installed inside the rotating box 31, an oil inlet pipe 33 fixedly connected to the top of the rotating box 31, a sealing cover 34 snapped into the inside of the oil inlet pipe 33, an oil passage pipe 35 fixedly connected to the bottom of the elastic oil bladder 32, an oil outlet hole 36 opened in the inner wall of the nut 2, a movable ring 37 fixedly connected to the outside of the rotating box 31, a pressing rod 38 movably snapped into the inside of the movable ring 37, a force-bearing cover 39 fixedly connected to the outside of the pressing rod 38, and a return spring 310 sleeved on the pressing rod 38.
[0033] It should be noted that: Nut 2 is installed on the outside of screw body 1 through its internal rolling ball 21; the operating box 31 is fixed and symmetrically distributed on the outside of nut 2; the bottom of oil inlet pipe 33 is fixedly connected to the inside of elastic oil bladder 32; and a one-way valve is provided inside oil inlet pipe 33; oil passage pipe 35 is symmetrically distributed on the outside of elastic oil bladder 32; and the end of oil passage pipe 35 away from elastic oil bladder 32 is fixedly connected to the inside of oil outlet hole 36; return spring 310 is located between force cover 39 and extrusion rod 38; and force cover 39 is movably connected to the outside of operating box 31; and the end of extrusion rod 38 away from force cover 39 is located on the outside of elastic oil bladder 32.
[0034] Furthermore, the operating box 31 serves as the mounting carrier for the lubrication mechanism 3. It is fixed and symmetrically distributed on the outside of the nut 2, providing a stable working environment for the internal components. An elastic oil bladder 32 is installed inside the operating box 31. The elastic oil bladder 32 is a key component for storing lubricating oil. Its material has good elasticity and sealing properties, and it can smoothly discharge the internal lubricating oil when it is squeezed.
[0035] Specifically: The oil inlet pipe 33 is fitted with a sealing cover 34. When it is necessary to add lubricating oil, simply remove the sealing cover 34. The operation is very convenient. At the same time, the oil inlet pipe 33 is equipped with a one-way valve. This design effectively prevents the lubricating oil in the elastic oil bladder 32 from flowing back through the oil inlet pipe 33 when it is not squeezed, thus ensuring the effective use of the lubricating oil.
[0036] As a further implementation of this solution, a toggle mechanism 4 is provided on the outside of the operating box 31. The toggle mechanism 4 includes a connecting plate 41, a rotating handle 42 is provided on the outside of the connecting plate 41, a rotating shaft 43 is fixedly connected to the outside of the rotating handle 42, and a toggle rod 44 is fixedly connected to the outside of the rotating shaft 43.
[0037] It should be noted that the connecting plates 41 are fixed and symmetrically distributed on the outside of the operating box 31, the rotating shaft 43 is rotatably connected between the two connecting plates 41 through the rotating handle 42, and the actuating rod 44 and the force-bearing cover 39 are on the same plane.
[0038] Furthermore, since the actuating lever 44 and the force-bearing cover 39 are on the same plane, when the actuating lever 44 rotates to the position of contacting the force-bearing cover 39, it will generate a thrust on the force-bearing cover 39, thereby driving the squeezing lever 38 to squeeze the elastic oil bladder 32 to achieve lubrication.
[0039] Working process: In the initial state, the elastic oil bladder 32 stores an appropriate amount of lubricating oil. The oil inlet pipe 33 is kept sealed by the sealing cover 34 to prevent lubricating oil leakage or impurities from entering. When it is necessary to replenish the elastic oil bladder 32 with lubricating oil, the sealing cover 34 is opened and lubricating oil is injected through the oil inlet pipe 33. The one-way valve inside the oil inlet pipe 33 can prevent the injected lubricating oil from flowing back, ensuring that the replenishment process is smooth.
[0040] When the lead screw body 1 requires lubrication, an external force acts on the force-bearing cover 39, pushing the pressing rod 38 to move along the movable ring 37 into the rotating box 31. At this time, the return spring 310 is compressed. During the movement of the pressing rod 38, it will squeeze the elastic oil bladder 32, so that the lubricating oil in the elastic oil bladder 32 is under pressure. It is then transported through the oil pipe 35 to the oil outlet 36 on the inner wall of the nut 2. Finally, it seeps out from the oil outlet 36 to the contact part between the rolling ball 21 and the lead screw body 1 to achieve lubrication. After the force-bearing cover 39 is released, the return spring 310 restores its elastic deformation, driving the pressing rod 38 and the force-bearing cover 39 to return to their original state. The elastic oil bladder 32 also returns to its original state due to its own elasticity, reserving power for the next lubrication.
[0041] By rotating the rotary handle 42, the rotating shaft 43 is driven to rotate between the connecting plates 41. The actuating rod 44 on the outside of the rotating shaft 43 rotates accordingly. Since the actuating rod 44 and the force-bearing cover 39 are on the same plane, the rotating actuating rod 44 will periodically contact and push the force-bearing cover 39, and then squeeze the elastic oil bladder 32 through the extrusion rod 38. The subsequent lubricating oil delivery and component reset process is the same as the direct operation of the lubrication mechanism 3. By controlling the rotation speed and angle of the rotary handle 42, the pushing frequency and force of the actuating rod 44 on the force-bearing cover 39 can be adjusted, thereby controlling the amount of lubricating oil extruded and the lubrication frequency to meet the lubrication needs under different working conditions.
[0042] In addition, the operating box 31 is symmetrically distributed on the outside of the nut 2, and the oil pipe 35 is symmetrically distributed on the outside of the elastic oil bladder 32 and connected to the oil outlet 36, ensuring that the lubricating oil can be evenly delivered to the contact area between the rolling ball 21 and the lead screw body 1, ensuring the comprehensiveness of the lubrication effect. At the same time, when the nut 2 rotates on the outside of the lead screw body 1 through the rolling ball 21, the operating box 31 moves synchronously with the nut 2, so that the lubrication action can continue to follow the operation of the ball screw, ensuring the timeliness and effectiveness of lubrication.
[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A ball screw with lubrication function, comprising a screw body (1) and a nut (2), characterized in that: The nut (2) has a ball bearing (21) inside and a lubrication mechanism (3) on the outside. The lubrication mechanism (3) includes a rotating box (31), an elastic oil bladder (32) is installed inside the rotating box (31), an oil inlet pipe (33) is fixedly connected to the top of the rotating box (31), a sealing cover (34) is snapped into the inside of the oil inlet pipe (33), an oil passage pipe (35) is fixedly connected to the bottom of the elastic oil bladder (32), an oil outlet hole (36) is opened in the inner wall of the nut (2), a movable ring (37) is fixedly connected to the outside of the rotating box (31), a pressing rod (38) is movably snapped into the inside of the movable ring (37), a force-bearing cover (39) is fixedly connected to the outside of the pressing rod (38), and a return spring (310) is sleeved on the pressing rod (38).
2. The ball screw with lubrication function according to claim 1, characterized in that: The outer side of the operating box (31) is provided with a toggle mechanism (4), the toggle mechanism (4) includes a connecting plate (41), the outer side of the connecting plate (41) is provided with a rotating handle (42), the outer side of the rotating handle (42) is fixedly connected with a rotating shaft (43), and the outer side of the rotating shaft (43) is fixedly connected with a toggle rod (44).
3. The ball screw with lubrication function according to claim 1, characterized in that: The nut (2) is mounted on the outside of the lead screw body (1) by the rolling ball (21) inside it, and the operating box (31) is fixed and symmetrically distributed on the outside of the nut (2).
4. The ball screw with lubrication function according to claim 1, characterized in that: The bottom of the oil inlet pipe (33) is fixedly connected to the inside of the elastic oil bladder (32), and a one-way valve is provided inside the oil inlet pipe (33).
5. The ball screw with lubrication function according to claim 1, characterized in that: The oil passage pipes (35) are symmetrically distributed on the outside of the elastic oil bladder (32), and the end of the oil passage pipe (35) away from the elastic oil bladder (32) is fixedly connected to the inside of the oil outlet (36).
6. The ball screw with lubrication function according to claim 1, characterized in that: The reset spring (310) is located between the force-bearing cover (39) and the extrusion rod (38), and the force-bearing cover (39) is movably connected to the outside of the operating box (31). The end of the extrusion rod (38) away from the force-bearing cover (39) is located outside the elastic oil bladder (32).
7. The ball screw with lubrication function according to claim 2, characterized in that: The connecting plates (41) are fixed and symmetrically distributed on the outside of the operating box (31). The rotating shaft (43) is rotatably connected between the two connecting plates (41) through the rotating handle (42). The actuating rod (44) and the force-bearing cover (39) are on the same plane.