A robot roller screw assembly with self-lubricating function

Abstract

The utility model belongs to the technical field of roller screw assembly, and disclose a robot roller screw assembly with self -lubricating function, including mounting seat, the top of mounting seat is connected with the fixed ring, the inboard of fixed ring is connected with roller screw outer casing, the utility model discloses by taking down oil injection hole bung is convenient to inject the lubricating oil of sufficient amount in the lubricating box, by the oil storage cotton is convenient to absorb lubricating oil to have the storage effect to lubricating oil, by the first lubricating hole, the second lubricating hole and the third lubricating hole of intercommunication are convenient for making lubricating oil enter roller screw outer casing to be attached on the surface of screw body, to reciprocating screw body plays the role of automatic lubrication, and because the lubricating box has the effect of storing lubricating oil, the oil storage cotton has the effect of absorbing lubricating oil, so it is not necessary to repeatedly add lubricating oil only needs to be added in the quantitative time, benefit to make full use of lubricating oil to reduce waste.

Description

Technical Field

[0001] This utility model belongs to the technical field of roller screw assembly, specifically a robot roller screw assembly with self-lubricating function. Background Technology

[0002] Currently, the transmission of robot motion relies partly on ball screws. Compared to ball screws where the balls transmit the load, ball screws typically use threaded rollers as the load transmission element, giving them more contact points to support the load. As a result, ball screws have advantages such as high load-bearing capacity, high transmission accuracy, long service life, convenient installation and maintenance, and strong adaptability to harsh environments, which are beneficial for robot use.

[0003] Meanwhile, the reverse planetary roller screw based on an integral planetary carrier, with application number CN202411566536.X, includes: a nut, a screw shaft, m rollers, and a planetary carrier. The m rollers and the planetary carrier are disposed between the nut and the screw shaft. The m rollers are mounted on the planetary carrier and arranged around the screw shaft. The rollers are in a transmission engagement with the nut and the screw shaft. The planetary carrier is in a rotational engagement with the screw shaft. When the screw shaft rotates, the rollers are driven to rotate and, together with the planetary carrier, perform planetary rotation around the screw shaft.

[0004] However, the following problems were found in the implementation of the relevant technology: the roller screw is formed by the cooperation of multiple components such as nuts and screw shafts, but it is not equipped with a lubrication structure. As a result, when it is necessary to lubricate the components, the gaps between the components need to be manually lubricated, which is not conducive to improving the convenience of use. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a robot roller screw assembly with self-lubricating function, which has the advantage of facilitating automatic lubrication of the gap between roller screw components, thus eliminating the need for manual lubrication of the gap between the roller screw.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a robot roller screw assembly with self-lubricating function, including a mounting base, a fixing ring connected to the top of the mounting base, a roller screw housing connected to the inner side of the fixing ring, a screw body connected to the inner side of the roller screw housing through multiple roller drives, and a lubrication component and a communication component respectively provided on the mounting base.

[0007] Preferably, the lubrication assembly includes a lubrication housing, two drive sources, and an oil reservoir. The lubrication housing is disposed on the surface of the roller screw housing. The two drive sources are respectively disposed on the front and back of the lubrication housing. The power output ends of the two drive sources are each connected to a compression plate. The oil reservoir is disposed on the inner side of the lubrication housing. An oil injection hole plug is engaged with the top of the lubrication housing.

[0008] Preferably, one side of each of the two extrusion plates is connected to the surface of the oil-storing cotton.

[0009] Preferably, the two extrusion plates are symmetrically arranged on the front and rear sides of the vertical center line of the oil storage cotton.

[0010] Preferably, the connecting component includes three first lubrication holes and three third lubrication holes. The three first lubrication holes are all opened on the inner side of the bottom end of the lubrication box. The inner side of the fixing ring is provided with three second lubrication holes. The three third lubrication holes are all opened on the inner side of the top end of the roller screw housing.

[0011] Preferably, the first lubrication hole, the second lubrication hole, and the third lubrication hole on the left side are all connected, the second lubrication hole, the first lubrication hole, and the third lubrication hole in the middle are all connected, and the third lubrication hole, the first lubrication hole, and the second lubrication hole on the right side are all connected.

[0012] Preferably, the bottom end of the oil-retaining cotton is in contact with the surface of all three first lubrication holes.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model allows for the easy injection of sufficient lubricating oil into the lubrication box by removing the oil filling hole plug. The oil storage cotton facilitates the absorption of lubricating oil, thus storing it. The interconnected first, second, and third lubrication holes allow lubricating oil to enter the roller screw housing and adhere to the surface of the screw body, providing automatic lubrication for the reciprocating screw body. Since the lubrication box stores lubricating oil and the oil storage cotton absorbs it, there is no need to repeatedly add lubricating oil; only a fixed amount needs to be added at regular intervals.

[0015] 2. This utility model uses two drive sources to easily drive two extrusion plates to move horizontally and squeeze the oil storage cotton towards the center. This facilitates the automatic lubrication operation when the lubricating oil gradually decreases and is insufficient to drip, eliminating the need for manual application of lubricating oil. This improves the convenience of lubrication and helps to make full use of the remaining lubricating oil, effectively reducing lubricating oil waste. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the side planar structure of this utility model.

[0020] In the diagram: 1. Mounting bracket;

[0021] 2. Lubrication components; 21. Lubrication housing; 22. Drive source; 23. Extrusion plate; 24. Oil reservoir cotton; 25. Oil injection hole plug;

[0022] 3. Connecting component; 31. First lubrication hole; 32. Second lubrication hole; 33. Third lubrication hole;

[0023] 4. Retaining ring; 5. Roller screw housing; 6. Screw body. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 4 As shown, this utility model provides a robot roller screw assembly with self-lubricating function, including a mounting base 1, a fixing ring 4 connected to the top of the mounting base 1, a roller screw housing 5 connected to the inner side of the fixing ring 4, and a screw body 6 connected to the inner side of the roller screw housing 5 through multiple roller drives. A lubrication component 2 and a connecting component 3 are respectively provided on the mounting base 1.

[0026] Specifically, the lubrication assembly 2 includes a lubrication housing 21, two drive sources 22, and an oil storage cotton 24. The lubrication housing 21 is disposed on the surface of the roller screw housing 5. The two drive sources 22 are respectively disposed on the front and back of the lubrication housing 21. The power output ends of the two drive sources 22 are all connected to the extrusion plate 23. The oil storage cotton 24 is disposed on the inner side of the lubrication housing 21. The top of the lubrication housing 21 is engaged with an oil injection hole plug 25.

[0027] Furthermore, one side of each of the two extrusion plates 23 is connected to the surface of the oil-storage cotton 24.

[0028] Furthermore, the two extrusion plates 23 are symmetrically arranged on the front and rear sides of the vertical center line of the oil storage cotton 24.

[0029] It is worth noting that the connecting component 3 includes three first lubrication holes 31 and three third lubrication holes 33. The three first lubrication holes 31 are all opened on the inner side of the bottom end of the lubrication box 21. The inner side of the fixing ring 4 is provided with three second lubrication holes 32, and the three third lubrication holes 33 are all opened on the inner side of the top end of the roller screw housing 5.

[0030] It is worth noting that the first lubrication hole 31, the second lubrication hole 32, and the third lubrication hole 33 on the left side are all connected, the second lubrication hole 32, the first lubrication hole 31, and the third lubrication hole 33 in the middle are all connected, and the third lubrication hole 33, the first lubrication hole 31, and the second lubrication hole 32 on the right side are all connected.

[0031] It is worth mentioning that the bottom end of the oil-retaining cotton 24 is in contact with the surface of the three first lubrication holes 31.

[0032] The lead screw body 6, drive source 22, and oil storage cotton 24 are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail. The "front, rear, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.

[0033] Working principle: First, the fixing ring 4 is installed to the robot component via the mounting base 1, or the lubrication box 21 can be installed directly to the robot component without the mounting base 1. Beforehand, remove the oil filling hole plug 25 and inject sufficient lubricating oil into the lubrication box 21. At this time, the oil storage cotton 24 absorbs sufficient lubricating oil. However, it should be noted that when the oil storage cotton 24 has stored sufficient lubricating oil, the amount of lubricating oil injected should not exceed the height of the three first lubrication holes 31 to prevent lubricating oil overflow and waste. After the lubricating oil is injected, the oil filling hole plug 25 is re-locked. At this time, the lubricating oil will enter the roller through the connected first lubrication hole 31, second lubrication hole 32, and third lubrication hole 33. The lead screw housing 5 is attached to the surface of the reciprocating lead screw body 6, providing automatic lubrication between the lead screw housing 5 and the lead screw body 6, as well as to the connected rollers. Since the lubrication box 21 and the oil storage cotton 24 store lubricating oil, lubricating oil only needs to be added at fixed intervals. If the lubricating oil gradually decreases and is insufficient for lubrication, the two drive sources 22 drive the two extrusion plates 23 to move horizontally and squeeze the oil storage cotton 24 towards the center, making it easier to squeeze out the lubricating oil for use. The lubricating oil that overflows during extrusion will remain inside the lubrication box 21 and be absorbed by the oil storage cotton 24, which helps to make full use of the remaining lubricating oil and reduce lubricating oil waste.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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 robot roller screw assembly with self-lubricating function, comprising a mounting base (1), characterized in that: The top of the mounting base (1) is connected to a fixing ring (4), the inner side of the fixing ring (4) is connected to a roller screw housing (5), the inner side of the roller screw housing (5) is connected to a screw body (6) through multiple roller drives, and the mounting base (1) is respectively provided with a lubrication assembly (2) and a communication assembly (3).

2. The robot roller screw assembly with self-lubricating function according to claim 1, characterized in that: The lubrication assembly (2) includes a lubrication box (21), two drive sources (22) and an oil storage cotton (24). The lubrication box (21) is disposed on the surface of the roller screw housing (5). The two drive sources (22) are respectively disposed on the front and back of the lubrication box (21). The power output ends of the two drive sources (22) are all connected to a compression plate (23). The oil storage cotton (24) is disposed on the inner side of the lubrication box (21). The top of the lubrication box (21) is engaged with an oil injection hole plug (25).

3. A robot roller screw assembly with self-lubricating function according to claim 2, characterized in that: One side of each of the two extrusion plates (23) is connected to the surface of the oil storage cotton (24).

4. A robot roller screw assembly with self-lubricating function according to claim 2, characterized in that: The two extrusion plates (23) are symmetrically arranged on the front and rear sides of the vertical center line of the oil storage cotton (24).

5. A robot roller screw assembly with self-lubricating function according to claim 2, characterized in that: The connecting component (3) includes three first lubrication holes (31) and three third lubrication holes (33). The three first lubrication holes (31) are all opened on the inner side of the bottom end of the lubrication box (21). The inner side of the fixing ring (4) is provided with three second lubrication holes (32). The three third lubrication holes (33) are all opened on the inner side of the top end of the roller screw housing (5).

6. A robot roller screw assembly with self-lubricating function according to claim 5, characterized in that: The first lubrication hole (31), the second lubrication hole (32), and the third lubrication hole (33) located on the left side are all connected. The second lubrication hole (32), the first lubrication hole (31), and the third lubrication hole (33) located in the middle are all connected. The third lubrication hole (33), the first lubrication hole (31), and the second lubrication hole (32) located on the right side are all connected.

7. A robot roller screw assembly with self-lubricating function according to claim 5, characterized in that: The bottom end of the oil storage cotton (24) is in contact with the surface of the three first lubrication holes (31).

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