A ball screw that is easy to lubricate

Abstract

This utility model provides a ball screw that is easy to lubricate, relating to the field of ball screw technology. It includes a screw with a ball sleeve meshing in its middle. An oil inlet is provided on the circumference of the ball sleeve. A spring-loaded assembly is provided on the inner wall of the oil inlet. A sealing plate is provided inside the oil inlet via the spring-loaded assembly for sealing. When a lubricating oil nozzle is pressed against the upper surface of the sealing plate, the sealing plate moves downwards, positioning itself inside the lubricating oil pipe. The diameter of the sealing plate is smaller than the diameter of the lubricating oil pipe, allowing lubricating oil to enter the lubricating oil pipe from between the sealing plate and the pipe. After lubricating oil injection, the nozzle is removed from the oil inlet. A return spring drives a slider upwards, returning the sealing plate to the lower surface of the retaining ring, thus sealing the oil inlet.

Description

Technical Field

[0001] This utility model relates to the field of ball screw technology, and more specifically, to a ball screw that is easy to lubricate. Background Technology

[0002] A ball screw is a precision transmission element that converts rotary motion into linear motion by rolling balls between a screw and a nut. It is widely used in machinery manufacturing, automation equipment, and other fields, such as patent application number CN202311228046.4, which describes an anti-locking ball screw. The ball screw includes a screw, transmission balls, a nut, and a buffer assembly. The transmission balls abut against the drive thread of the screw. The nut is sleeved on the outer circumference of the screw. The transmission balls are positioned between the nut and the screw, and the rotational force of the screw drives the nut to move through the transmission balls. A ramp assembly is located at one end of the nut in the axial direction. The thickness of the ramp assembly gradually increases from the first end to the second end along the first direction of the nut's circumference. The support plate of the buffer assembly is detachably connected to the screw. One end of the elastic unit of the buffer assembly is fixedly connected to the support plate, and the other end extends towards the ramp assembly. When the screw rotates along the first direction of the nut's circumference, the nut moves closer to the buffer assembly until the ramp assembly abuts against the elastic unit. This solves the problem of how to avoid damage to components after the ball screw drive motor fails. The ball screw sleeve is equipped with an oil inlet for injecting lubricating oil. In the above technical solution, the oil inlet is exposed to the outside. During daily operation, foreign objects may enter the lubricating oil pipeline from the oil inlet, causing blockage and affecting the flow of lubricating oil. Utility Model Content

[0003] The main purpose of this utility model is to provide a ball screw that is easy to lubricate, which can effectively solve the problem in the prior art where the ball screw sleeve is provided with an oil inlet for injecting lubricating oil. In the above technical solution, the oil inlet is exposed to the outside. In daily operation, foreign objects will enter the lubricating oil pipeline from the oil inlet, causing blockage inside the lubricating oil pipeline and affecting the flow of lubricating oil.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a ball screw that is easy to lubricate, comprising a screw, a ball sleeve being engaged and installed in the middle of the screw, an oil inlet being provided on the circumferential surface of the ball sleeve, a spring-loaded component being provided on the inner wall of the oil inlet, and a sealing plate being provided inside the oil inlet through the spring-loaded component for sealing.

[0005] Preferably, a retaining ring is installed around the inner wall of the oil inlet.

[0006] Preferably, a limit ring is fixedly installed on the lower surface of the retaining ring.

[0007] Preferably, the rebound assembly includes a plurality of grooves, all of which are equidistantly formed on the inner wall of the oil inlet.

[0008] Preferably, a slider is slidably installed inside each of the slide grooves, and a return spring is installed on the inner surface of each slide groove, with the top end of the return spring disposed on the lower surface of the slider.

[0009] Preferably, a limiting block is fixedly installed on one side surface of the slider, and a connecting rod is fixedly installed on the lower surface of the limiting block, with the lower end of the connecting rod disposed on the upper surface of the sealing plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) When the operator presses the lubricating oil nozzle onto the upper surface of the sealing plate, the sealing plate can be moved downwards and placed inside the lubricating oil pipeline. The diameter of the sealing plate is smaller than the diameter of the lubricating oil pipeline. At this time, the lubricating oil will enter the lubricating oil pipeline from between the sealing plate and the oil pipeline for lubrication. After the lubricating oil is injected, the nozzle is removed from the oil inlet. The return spring can drive the slider to move upwards, which can drive the sealing plate to move upwards and return the sealing plate to the lower surface of the retaining ring to seal the oil inlet and prevent foreign objects from entering the lubricating oil pipeline from the oil inlet, which would affect the use of the ball screw sleeve. This device does not require any extra operations to transport the lubricating oil, making it convenient for operators to use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a ball screw that is easy to lubricate according to the present invention;

[0013] Figure 2 This is a cross-sectional view of the oil inlet structure of a ball screw that is easy to lubricate, according to the present invention.

[0014] Figure 3 This is a front view schematic diagram of the internal structure of the oil inlet of a ball screw that is easy to lubricate, according to this utility model.

[0015] In the diagram: 1. Lead screw; 2. Ball sleeve; 3. Oil inlet; 4. Sealing plate; 5. Springback assembly; 501. Slide groove; 502. Slider; 503. Return spring; 504. Connecting rod; 505. Limiting block; 6. Retaining ring; 7. Limiting ring. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0017] like Figure 1 , 2 As shown, a ball screw that is easy to lubricate includes a screw 1, a ball sleeve 2 is engaged and installed in the middle of the screw 1, an oil inlet 3 is provided on the circumferential surface of the ball sleeve 2, a spring-loaded component 5 is provided on the inner wall of the oil inlet 3, and a sealing plate 4 is provided inside the oil inlet 3 through the spring-loaded component 5 for sealing.

[0018] like Figure 2 As shown, a retaining ring 6 is installed around the inner wall of the oil inlet 3, and a limiting ring 7 is fixedly installed on the lower surface of the retaining ring 6, so that when the retaining ring 6 contacts the sealing plate 4, the sealing performance of the sealing plate 4 is better.

[0019] like Figure 2 , 3 As shown, the rebound assembly 5 includes several grooves 501, which are equidistantly formed on the inner wall of the oil inlet 3. A slider 502 is slidably installed inside each groove 501. A return spring 503 is installed on the inner surface of each groove 501, with its top end positioned on the lower surface of the slider 502. A limit block 505 is fixedly installed on one side surface of the slider 502, and a connecting rod 504 is fixedly installed on the lower surface of the limit block 505. The lower end of the connecting rod 504 is positioned on the upper surface of the sealing plate 4. When the operator presses the lubricating oil nozzle onto the upper surface of the sealing plate 4, the sealing plate 4 can move downwards, allowing it to set... Inside the lubricating oil pipeline, and with the diameter of the sealing plate 4 smaller than that of the lubricating oil pipeline, lubricating oil will enter the lubricating oil pipeline from between the sealing plate 4 and the oil pipeline for lubrication. After the lubricating oil is injected, the nozzle is removed from the oil inlet 3. The return spring 503 drives the slider 502 to move upward, which in turn drives the sealing plate 4 to move upward, returning the sealing plate 4 to the lower surface of the retaining ring 6, thus sealing the oil inlet 3 and preventing foreign objects from entering the lubricating oil pipeline from the oil inlet 3, which would affect the use of the ball screw sleeve 2. This device does not require any extra operations to deliver lubricating oil, making it convenient for operators to use.

[0020] The working principle of this type of ball screw that is easy to lubricate:

[0021] In use, when lubricating oil needs to be injected into the ball sleeve 2, the operator presses the lubricating oil nozzle onto the upper surface of the sealing plate 4. This causes the sealing plate 4 to move downwards, positioning it inside the lubricating oil pipe. The diameter of the sealing plate 4 is smaller than the diameter of the lubricating oil pipe, allowing lubricating oil to enter the lubricating oil pipe through the space between the sealing plate 4 and the pipe. After the lubricating oil injection is complete, the nozzle is removed from the oil inlet 3. The return spring 503 then drives the slider 502 to move upwards, which in turn drives the sealing plate 4 to move upwards, returning it to the lower surface of the retaining ring 6. This seals the oil inlet 3, preventing foreign objects from entering the lubricating oil pipe and affecting the use of the ball sleeve 2. This device requires no additional operation for lubricating oil delivery, making it convenient for operators to use.

[0022] The above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A ball screw that is easy to lubricate, comprising a screw (1), characterized in that: A ball screw sleeve (2) is engaged in the middle of the lead screw (1). An oil inlet (3) is provided on the circumference of the ball screw sleeve (2). A spring-loaded assembly (5) is provided on the inner wall of the oil inlet (3). A sealing plate (4) is provided inside the oil inlet (3) through the spring-loaded assembly (5) for sealing. The spring-loaded assembly (5) includes several grooves (501). Several grooves (501) are equally spaced on the inner wall of the oil inlet (3). A slider (502) is slidably installed inside each groove (501). A return spring (503) is installed on the inner surface of each groove (501). The top of the return spring (503) is located on the lower surface of the slider (502). A limit block (505) is fixedly installed on one side surface of the slider (502). A connecting rod (504) is fixedly installed on the lower surface of the limit block (505). The lower end of the connecting rod (504) is located on the upper surface of the sealing plate (4).

2. The ball screw with easy lubrication according to claim 1, characterized in that; A retaining ring (6) is installed around the inner wall of the oil inlet (3).

3. The ball screw for easy lubrication according to claim 2, characterized in that: A limit ring (7) is fixedly installed on the lower surface of the retaining ring (6).

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