Multi-joint six-axis industrial mechanical arm

Abstract

The utility model discloses a multi-joint six-axis industrial mechanical arm, and relates to the technical field of mechanical arms. The mechanical arm mainly comprises a mechanical arm body, two adjacent arms in the mechanical arm body are hinged through a shaft rod, and a mounting shaft hole is formed in one end of each arm; the shaft rod is movably inserted into the mounting shaft hole, an oil storage cavity is formed in the middle of the shaft rod, a plurality of evenly-distributed oil coating balls are in ball connection with the outer side of the shaft rod and roll on the inner wall of the mounting shaft hole, one side of each oil coating ball is communicated with the interior of the oil storage cavity, and an oil adding pipe communicated with the oil storage cavity is arranged at one end of the shaft rod. One end of the oil adding pipe is sleeved with a sealing cover in a threaded mode, and anti-skid lines are arranged on the peripheral side of the sealing cover. Through the arrangement of the oil storage cavity and the oil coating balls on the shaft rod, automatic lubrication of the mechanical arm joint is achieved, the requirement for manual lubrication is reduced, the oil coating balls are evenly distributed on the shaft rod, and abrasion caused by uneven lubrication is avoided.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, specifically to a multi-joint six-axis industrial robotic arm. Background Technology

[0002] Robotic arms, as key components of modern industrial automation, are widely used in manufacturing, assembly, material handling, and other fields. Their high precision and multi-degree-of-freedom characteristics have brought revolutionary efficiency improvements to industrial production. However, during prolonged operation, the multi-joint structure of robotic arms experiences wear due to repeated rotation and load bearing, which in turn affects the robotic arm's precision and lifespan. To reduce this wear, traditional solutions typically rely on manual, periodic lubrication of the robotic arm joints. However, this process is not only time-consuming and labor-intensive but also suffers from uneven lubrication and low efficiency.

[0003] Currently, there are some automated lubrication systems on the market, but they often suffer from problems such as complex structure, high cost, or difficulty in integrating into existing robotic arm systems. In addition, most existing robotic arms require manual application of lubricating oil to the transmission components, which lacks automation and cannot meet the modern industry's pursuit of high efficiency and low cost.

[0004] To address this issue, this application provides a multi-joint six-axis industrial robotic arm. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-joint six-axis industrial robotic arm to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A multi-joint six-axis industrial robotic arm includes a robotic arm body, wherein two adjacent arms in the robotic arm body are hinged together by a shaft, wherein:

[0008] One end of the arm is provided with a mounting shaft hole;

[0009] The shaft is movably inserted into the mounting shaft hole. The middle part of the shaft has an oil storage cavity. Several evenly distributed oil balls are connected to the outer side of the shaft. The oil balls roll on the inner wall of the mounting shaft hole. One side of each oil ball is connected to the inside of the oil storage cavity. One end of the shaft is provided with an oil filling pipe connected to the oil storage cavity. One end of the oil filling pipe is threaded with a sealing cap.

[0010] Preferably, the shaft consists of a mounting post, a shaft tube, and a connecting post. The mounting post and the connecting post are respectively fixed at both ends of the shaft tube. The outer diameter of the mounting post and the outer diameter of the connecting post are the same as the inner diameter of the mounting shaft hole. The oil storage cavity is constructed inside the shaft tube. The outer diameter of the shaft tube is smaller than the outer diameter of the mounting post and the connecting post. The oiling ball is connected to the outside of the shaft tube. The oil filling pipe is disposed on the connecting post.

[0011] Preferably, a ball groove is constructed on the outer side of the shaft tube, the oil ball is movably installed inside the ball groove, and a cylindrical groove communicating with the ball groove is constructed on the inner wall of the oil storage cavity.

[0012] Preferably, one end of the shaft tube is threaded into one end of the connecting column, and a knob block is fixed to the other end of the connecting column. The oil filling tube passes through the knob block and the connecting column.

[0013] Preferably, the oil storage cavity is provided with an oil-absorbing cotton 1 inside, and a plurality of oil-absorbing cotton 2 are connected to the oil-absorbing cotton 1. One end of the oil-absorbing cotton 2 is inserted into the cylindrical groove and fits against the outer side of the oil ball.

[0014] Preferably, the outer side of the first oil-absorbing cotton has a slot, and the other end of the second oil-absorbing cotton is movably inserted into the slot.

[0015] Preferably, the outer periphery of the sealing cover is provided with anti-slip texture.

[0016] Preferably, the outer peripheral side of the knob block is provided with anti-slip texture.

[0017] Beneficial effects:

[0018] 1. This utility model achieves automatic lubrication of the robotic arm joints by setting up an oil storage cavity and an oil ball on the shaft, reducing the need for manual lubrication.

[0019] 2. In this utility model, the oil balls are evenly distributed on the shaft, which can achieve a uniform lubrication effect during the movement of the robotic arm, avoiding wear caused by uneven lubrication. Since continuous and uniform lubrication is achieved, friction between joints can be effectively reduced, wear can be reduced, and the service life of the robotic arm can be extended.

[0020] 3. In this utility model, the design of the oil filling pipe and the closed cap makes adding lubricant simple and quick, and the operation can be easily carried out by the knob block. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This utility model Figure 1 A three-dimensional sectional view;

[0024] Figure 3 This is a three-dimensional structural diagram of the central shaft of this utility model;

[0025] Figure 4 This utility model Figure 3 A three-dimensional sectional view;

[0026] Figure 5 This utility model Figure 3 Exploded view.

[0027] Figures 1-5 middle:

[0028] 1. Arm; 11. Mounting shaft hole; 2. Shaft; 21. Oil reservoir; 22. Oil ball; 23. Oil filling pipe; 24. Sealing cap; 201. Mounting post; 202. Shaft tube; 203. Connecting post; 204. Ball groove; 205. Cylindrical groove; 206. Knob block; 211. Oil absorbent cotton one; 212. Oil absorbent cotton two; 213. Slot. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0030] This application provides a multi-joint six-axis industrial robotic arm, mainly to address the issue that during long-term operation of the robotic arm's multi-joint structure, friction between the joints leads to wear, affecting the robotic arm's accuracy and lifespan. Traditional solutions to reduce this wear typically rely on manual, periodic lubrication of the robotic arm joints. However, this process is not only time-consuming and labor-intensive but also suffers from uneven lubrication and low efficiency. The application provides the following technical solution, which will be discussed in conjunction with... Figures 1-5 Please provide a detailed explanation:

[0031] A multi-joint six-axis industrial robotic arm mainly includes a robotic arm body, wherein two adjacent arms 1 in the robotic arm body are hinged together by a shaft 2, wherein:

[0032] One end of arm 1 is provided with a mounting shaft hole 11;

[0033] The shaft 2 is movably inserted into the mounting hole 11. The middle part of the shaft 2 has an oil reservoir 21 for storing lubricant. Several evenly distributed oil balls 22 are connected to the outer side of the shaft 2. The oil balls 22 roll on the inner wall of the mounting hole 11 to achieve automatic lubrication and ensure uniform distribution of lubricant. One side of the oil balls 22 is connected to the inside of the oil reservoir 21. One end of the shaft 2 is provided with an oil filling pipe 23 connected to the oil reservoir 21. One end of the oil filling pipe 23 is threaded with a sealing cap 24. The outer periphery of the sealing cap 24 is constructed with anti-slip texture. The sealing is achieved by threading. The anti-slip texture on the outer periphery of the sealing cap 24 facilitates operation.

[0034] This design enables automatic lubrication of the robotic arm joints, reducing the frequency and labor intensity of manual maintenance. The automatically rolling oil ball 22 ensures uniform distribution of lubricant, effectively reducing friction and wear between joints, extending the service life of the robotic arm, and improving its accuracy and reliability. The design of the oil filling tube 23 and the sealing cap 24 simplifies the lubricant addition process and improves maintenance efficiency. The overall structure is compact, optimizing the design of the robotic arm. At the same time, the anti-slip texture increases the safety of operation. In addition, this design has good adaptability and can meet the lubrication needs of the robotic arm under different loads and motion conditions.

[0035] For details, please refer to Figure 3 , Figure 4 and Figure 5 The shaft 2 consists of a mounting post 201, a shaft tube 202, and a connecting post 203. The mounting post 201 and the connecting post 203 are fixed at both ends of the shaft tube 202. The outer diameters of the mounting post 201 and the connecting post 203 are the same as the inner diameter of the mounting shaft hole 11, ensuring precise fit and good connection between the shaft 2 and the arm 1. The oil reservoir 21 is constructed inside the shaft tube 202. The outer diameter of the shaft tube 202 is smaller than the outer diameters of the mounting post 201 and the connecting post 203. The oil ball 22 is ball-connected to the outside of the shaft tube 202, ensuring that the oil ball 22 fits better against the inner wall of the mounting shaft hole 11 to achieve lubrication. At the same time, it can transfer the load of the arm 1 to the mounting post 201 and the connecting post 203, preventing damage to the oil ball 22. The oil filling pipe 23 is set on the connecting post 203. This design of the shaft 2 not only optimizes the structure of the robotic arm joint, but also improves the efficiency and reliability of the lubrication system.

[0036] In this embodiment, please refer to Figure 4 and Figure 5A ball groove 204 is constructed on the outer side of the shaft tube 202, and an oil ball 22 is movably installed inside the ball groove 204. A cylindrical groove 205 communicating with the ball groove 204 is constructed on the inner wall of the oil reservoir 21. This structure provides a space for the oil ball 22 to move, allowing it to roll freely within the groove. The movable installation of the oil ball 22 inside the ball groove 204 allows it to roll continuously as the shaft tube 202 rotates during the operation of the robotic arm, thereby evenly applying the lubricant in the oil reservoir 21 to the inner wall of the mounting shaft hole 11. In addition, the cylindrical groove 205 on the inner wall of the oil reservoir 21, communicating with the ball groove 204, ensures that the lubricant can flow smoothly from the oil reservoir 21 to the oil ball 22.

[0037] For easier maintenance or lubrication of shaft 2, please refer to [link / reference]. Figure 4 and Figure 5 One end of the shaft tube 202 is threaded into one end of the connecting column 203, and the other end of the connecting column 203 is fixed with a knob block 206. The oil filling tube 23 passes through the knob block 206 and the connecting column 203. The outer circumference of the knob block 206 is constructed with anti-slip texture. This design provides a simple and direct way to maintain and replenish the lubricant of the robotic arm joint. The anti-slip texture design on the knob block 206 increases the stability of the hand during operation, prevents operational errors caused by hand slippage, and improves the safety of the maintenance process. At the same time, the threaded connection and the setting of the knob block 206 make the maintenance of the entire lubrication system more convenient and quick, reducing maintenance time and labor intensity.

[0038] To ensure that the lubricant inside the oil reservoir 21 is applied to each oiling ball 22, please refer to... Figure 4 and Figure 5 The oil storage cavity 21 is equipped with an oil-absorbing cotton 211, and several oil-absorbing cotton 212 are connected to the oil-absorbing cotton 211. One end of the oil-absorbing cotton 212 is inserted into the cylindrical groove 205 and fits against the outer side of the oil ball 22. This arrangement allows the oil ball 22 to obtain lubricant by contacting the oil-absorbing cotton 212 during rolling, ensuring more balanced lubrication of various parts of the joint. Continuous and uniform lubrication helps to reduce friction and wear during joint rotation and extend the service life of the robotic arm. It should be noted that in this embodiment, the oil-absorbing cotton 211 and the oil-absorbing cotton 212 are polypropylene absorbent cotton.

[0039] Furthermore, please refer to Figure 5The outer side of the oil-absorbing cotton 211 has a slot 213. The other end of the oil-absorbing cotton 212 is movably inserted into the slot 213. This design facilitates the assembly of the oil-absorbing cotton 212 and the oil-absorbing cotton 211. It should be noted that one end of the mounting post 201 has a fixing groove that matches the oil-absorbing cotton 211. This groove is not shown in the attached drawing. During assembly, first insert one end of the oil-absorbing cotton 211 into the fixing groove. Then, insert the oil-absorbing cotton 212 into the cylindrical groove 205 through the ball groove 204. Press one end of the oil-absorbing cotton 212 with a wire or other wire-like tool to insert the other end of the oil-absorbing cotton 212 into the slot 213 to complete the fixing. Finally, install the oil ball 22 into the ball groove 204 to complete the assembly.

[0040] The specific operating steps of this device are as follows:

[0041] First, rotate the sealing cap 24 or the knob block 206 to add lubricant. Then, rotate the sealing cap 24 to seal one end of the oiling tube 23, or rotate the knob block 206 to connect the connecting post 203 to the shaft tube 202. At this time, the lubricant is absorbed on the first oil-absorbing cotton 211 and then transferred to the second oil-absorbing cotton 212. When the two adjacent arms 1 rotate, they will drive the oiling ball 22 to rotate, thereby applying lubricant to the inner wall of the mounting shaft hole 11. This can effectively reduce friction between joints, reduce wear, and extend the service life of the robotic arm.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-joint six-axis industrial robotic arm, comprising a robotic arm body, wherein two adjacent arms (1) in the robotic arm body are hinged together by a shaft (2), characterized in that, in: One end of the arm (1) is provided with a mounting shaft hole (11). The shaft (2) is movably inserted into the mounting shaft hole (11). The middle part of the shaft (2) is equipped with an oil storage cavity (21). Several evenly distributed oil balls (22) are connected to the outer side of the shaft (2). Several oil balls (22) roll on the inner wall of the mounting shaft hole (11). One side of the oil ball (22) is connected to the inside of the oil storage cavity (21). One end of the shaft (2) is provided with an oil filling pipe (23) connected to the oil storage cavity (21). One end of the oil filling pipe (23) is threaded with a sealing cap (24).

2. The multi-joint six-axis industrial robotic arm according to claim 1, characterized in that, The shaft (2) is composed of a mounting post (201), a shaft tube (202), and a connecting post (203). The mounting post (201) and the connecting post (203) are respectively fixed at both ends of the shaft tube (202). The outer diameter of the mounting post (201) and the outer diameter of the connecting post (203) are the same as the inner diameter of the mounting shaft hole (11). The oil storage cavity (21) is constructed inside the shaft tube (202). The outer diameter of the shaft tube (202) is smaller than the outer diameter of the mounting post (201) and the connecting post (203). The oil ball (22) is connected to the outside of the shaft tube (202). The oil filling pipe (23) is set on the connecting post (203).

3. The multi-joint six-axis industrial robotic arm according to claim 2, characterized in that, A ball groove (204) is constructed on the outer side of the shaft tube (202), and the oil ball (22) is movably installed inside the ball groove (204). A cylindrical groove (205) communicating with the ball groove (204) is constructed on the inner wall of the oil storage cavity (21).

4. The multi-joint six-axis industrial robotic arm according to claim 3, characterized in that, One end of the shaft tube (202) is threaded into one end of the connecting post (203), and the other end of the connecting post (203) is fixed with a knob block (206). The oil filling tube (23) passes through the knob block (206) and the connecting post (203).

5. A multi-joint six-axis industrial robotic arm according to claim 4, characterized in that, The oil storage cavity (21) is provided with an oil-absorbing cotton 1 (211), and a number of oil-absorbing cotton 2 (212) are connected to the oil-absorbing cotton 1 (211). One end of the oil-absorbing cotton 2 (212) is inserted into the cylindrical groove (205) and is attached to the outside of the oil ball (22).

6. A multi-joint six-axis industrial robotic arm according to claim 5, characterized in that, The outer side of the first oil-absorbing cotton (211) has a slot (213), and the other end of the second oil-absorbing cotton (212) is movably inserted into the slot (213).

7. A multi-joint six-axis industrial robotic arm according to claim 1, characterized in that, The outer periphery of the closure (24) is provided with anti-slip texture.

8. A multi-joint six-axis industrial robotic arm according to claim 4, characterized in that, The outer periphery of the knob block (206) is provided with anti-slip texture.

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