Mechanical joint of mechanical arm

Abstract

The utility model relates to the technical field of mechanical arms, in particular to a mechanical joint of a mechanical arm, which comprises the mechanical arm, a joint and a mounting component, the joint is arranged at one end of the mechanical arm, the mechanical arm comprises the mounting component, and a mounting seat is mounted at the other end of the joint through a bearing; the mounting assembly comprises an auxiliary joint, the auxiliary joint is in bolted connection with one end of the mechanical arm, a sliding sleeve is arranged on the periphery of the auxiliary joint in a sleeving mode, a ball groove is formed in the outer surface of the sliding sleeve, and a ball is connected into the ball groove in a rolling mode; and the friction force of the mechanical joint is reduced through rolling contact friction, so that the effect of improving auxiliary noise reduction is achieved, the using effect is improved, and the working environment quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a mechanical joint of a mechanical arm. Background Art

[0002] Due to its unique operational flexibility, the robotic arm has been widely used in industrial assembly, safety and explosion-proof and other fields. The robotic arm can achieve multi-angle movement, and the multi-axis robotic arm has multiple movable joints, so a reliable joint structure in the robotic arm is one of the most important components of the robotic arm.

[0003] At present, there is a lack of noise reduction mechanism when using mechanical joints. Usually, the mechanical arm needs to rotate and connect the mechanical joints during operation. However, due to long-term use or wear, sharp noise will be generated, affecting the quality of the working environment. Therefore, a mechanical joint of a robotic arm is proposed to utilize rolling contact friction to reduce the friction of the mechanical joint, thereby increasing the effect of auxiliary noise reduction, improving the use effect, and improving the quality of the working environment. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a mechanical joint of a robotic arm, so as to reduce the friction of the mechanical joint, thereby increasing the effect of auxiliary noise reduction, improving the use effect, and improving the quality of the working environment.

[0005] The technical solution adopted by the utility model to solve the technical problem is a mechanical joint of a mechanical arm, comprising a mechanical arm, a joint and a mounting assembly, wherein one end of the mechanical arm is provided with a joint, the mechanical arm comprises a mounting assembly, and the other end of the joint is provided with a bearing mounting seat;

[0006] The mounting assembly includes a secondary joint, and the secondary joint is bolted to one end of the mechanical arm. The outer sleeve of the secondary joint is provided with a sliding sleeve, and the outer surface of the sliding sleeve is provided with a ball groove, and a ball is rollingly connected in the ball groove.

[0007] By adopting the above technical solution, rolling contact friction can be utilized to improve the stability of the joint connection structure, while reducing friction, thereby reducing the generation of noise and also helping to extend the service life of the joint.

[0008] Specifically, the inner side of the mounting seat is sleeved and connected to the positioning rod, the inner side of the mounting seat located at the positioning rod is connected to the micro air cushion by gluing, and the outer periphery of the positioning rod in the mounting seat is sleeved with a spring.

[0009] By adopting the above technical solution, it is convenient to utilize the sliding of the positioning rod to form an auxiliary locking mechanism, thereby improving the stability and safety of joint positioning.

[0010] Specifically, a groove corresponding to the sliding sleeve is provided on the inner surface of the joint, an oil storage tank and a guide groove are provided in the joint, a micro-delivery pump is provided between the oil storage tank and the guide groove, the feed end of the micro-delivery pump is connected to the oil storage tank through a pipeline, and the discharge end of the micro-delivery pump is connected to the guide groove through a hose, and a socket is provided on the surface of the joint, and the socket passes through the groove.

[0011] By adopting the above technical solution, the working quality of the joints can be improved and the noise generated by friction can be further reduced by pumping lubricating oil.

[0012] Specifically, the servo motor is connected to the mounting seat via bolts, and the servo motor is connected to the joint via a driving shaft.

[0013] By adopting the above technical solution, it is convenient to drive the joint to rotate and adjust its working angle.

[0014] Specifically, both sides of the secondary joint are sleeved and connected with the plug rod, and sliding grooves are opened on both sides of the secondary joint, and the plug rod is slidably connected to the sliding grooves through sliders on both sides, and a compression spring is installed on the inner side of the plug rod in the secondary joint through a spring seat.

[0015] By adopting the above technical solution, the elastic force can be used to push the insertion rod to quickly insert to form an auxiliary limiting mechanism, which is convenient for improving the stability of the disassembly and assembly operations.

[0016] Specifically, an air nozzle is provided on the surface of the mounting seat, and an air outlet end of the air nozzle is connected to the micro air cushion through a hose.

[0017] By adopting the above technical solution, it is convenient to connect an external air pump device to inflate and deflate the micro air cushion.

[0018] Specifically, a plug hole corresponding to the positioning rod is provided on the surface of one end of the joint.

[0019] By adopting the above technical solution, it is convenient to insert the positioning rod for auxiliary limiting.

[0020] Beneficial effects of the utility model:

[0021] (1) The mechanical joint of a robot arm described in the utility model can reduce the friction generated by the rotation of the joint by means of rolling contact friction through the provision of joints, sub-joints, sliding sleeves, ball grooves and balls, thereby delaying the wear caused by long-term use and reducing the noise generation, making the use more reasonable and quieter.

[0022] (2) The mechanical joint of a mechanical arm described in the utility model can lock and limit the mechanical joint after rotation adjustment by means of the positioning rod, mounting seat, micro air cushion and spring, which can not only improve the stability of actual work, but also play an auxiliary protection effect, avoid external force from causing damage to the joint rotation structure, and improve the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the sliding sleeve of the utility model;

[0026] Figure 3 This is a schematic cross-sectional structural diagram of the mounting seat of the utility model;

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the joint of the utility model;

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the auxiliary joint of the utility model;

[0029] In the figure: 1. Robotic arm; 2. Joint; 201. Groove; 202. Oil storage tank; 203. Guide groove; 204. Micro delivery pump; 205. Socket; 3. Mounting assembly; 301. Sub-joint; 302. Sliding sleeve; 303. Ball groove; 304. Ball; 305. Insert rod; 306. Slide groove; 307. Compression spring; 4. Mounting seat; 401. Positioning rod; 402. Micro air cushion; 403. Spring; 404. Servo motor; 5. Air nozzle; 6. Socket. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] In order to reduce the friction of mechanical joints, thereby increasing the effect of auxiliary noise reduction, improving the use effect and improving the quality of the working environment, such as Figure 1-3 As shown, a mechanical joint of a mechanical arm described in the utility model comprises a mechanical arm 1, a joint 2 and a mounting assembly 3, wherein one end of the mechanical arm 1 is provided with the joint 2, the mechanical arm 1 comprises the mounting assembly 3, and the other end of the joint 2 is provided with a bearing mounting seat 4;

[0032] The mounting assembly 3 includes a secondary joint 301, and the secondary joint 301 is bolted to one end of the robot arm 1. The outer sleeve of the secondary joint 301 is provided with a sliding sleeve 302. The outer surface of the sliding sleeve 302 is provided with a ball groove 303, and a ball 304 is rollingly connected in the ball groove 303.

[0033] When in use, rolling contact friction can be utilized through the secondary joint 301, the sliding sleeve 302, the ball groove 303 and the ball 304 to reduce the friction generated between the connecting structure of the robot arm 1 and the joint 2, thereby reducing the generation of noise and reducing wear.

[0034] In order to improve the stability of joint positioning, for example, Figure 1 , Figure 3 As shown, the utility model also includes that the inner side of the mounting seat 4 is sleeved and connected to the positioning rod 401, the inner side of the mounting seat 4 is connected to the micro air cushion 402 by gluing, and the outer side of the positioning rod 401 in the mounting seat 4 is sleeved with a spring 403.

[0035] When in use, the use position of the positioning rod 401 can be adjusted through the deformation of the micro air cushion 402 and the elastic force of the spring 403, thereby realizing the plug-in positioning mechanism, improving the stability of joint positioning, and also facilitating improving work safety.

[0036] For example, Figure 4 As shown, the utility model also includes that the surface on the inner side of the joint 2 is provided with a groove 201 corresponding to the sliding sleeve 302, an oil storage tank 202 and a guide groove 203 are provided in the joint 2, a micro-delivery pump 204 is provided between the oil storage tank 202 and the guide groove 203, the feed end of the micro-delivery pump 204 is connected to the oil storage tank 202 through a pipeline, and the discharge end of the micro-delivery pump 204 is connected to the guide groove 203 through a hose, and a socket 205 is provided on the surface of the joint 2, and the socket 205 passes through the groove 201.

[0037] When in use, the micro-transfer pump 204, the oil storage tank 202 and the guide groove 203 can simultaneously perform auxiliary lubrication treatment on the connection parts of the mechanical joints during their operation, thereby improving the actual use effect and reducing the generation of noise.

[0038] For example, Figure 3 As shown, the utility model also includes that the servo motor 404 is connected to the mounting seat 4 via bolts, and the servo motor 404 is connected to the joint 2 via a driving shaft.

[0039] When in use, the servo motor 404 is used to drive the joint 2 and assist in adjusting the angle of the joint.

[0040] For example, Figure 5 As shown, the utility model also includes that both sides of the secondary joint 301 are socketed and connected to the plug rod 305, both sides of the secondary joint 301 are provided with sliding grooves 306, and the plug rod 305 is slidably connected to the sliding grooves 306 through sliders on both sides, and a compression spring 307 is installed on the inner side of the plug rod 305 in the secondary joint 301 through a spring seat.

[0041] When in use, through the slide groove 306 and the spring 307, the elastic force can be utilized to push the insertion rod 305 out and insert it into the socket 205 to complete the auxiliary disassembly and assembly limit, thereby improving the convenience and stability of the disassembly and assembly operation. A socket corresponding to the insertion rod 305 is provided on the outer surface of the shell 2, and the insertion rod 305 is limited and rotated to connect the socket.

[0042] For example, Figure 1 As shown, the utility model also includes that an air nozzle 5 is provided on the surface of the mounting seat 4, and the air outlet end of the air nozzle 5 is connected to the micro air cushion 402 through a hose.

[0043] When in use, the air nozzle 5 is used to connect to an external air pump so as to inflate and deflate the micro air cushion 402 .

[0044] For example, Figure 1 As shown, the utility model also includes that a plug hole 6 corresponding to the positioning rod 401 is opened on the surface of one end of the joint 2.

[0045] When in use, the insertion hole 6 facilitates the insertion of the positioning rod 401 for insertion and positioning.

[0046] When the utility model is used, the operator first pushes the secondary joint 301 at one end of the mechanical arm 1 into the joint 2 before use. When the designated connection position is reached, the insertion rod 305 slides out of the secondary joint 301 and is inserted into the corresponding insertion hole 6 under the elastic force of the spring 307. The insertion method is used to assist the disassembly and assembly, thereby improving the convenience and stability of the operation. Then, the sliding sleeve 302 is pushed toward the outside of the joint 2 in turn, so that the outside of the sliding sleeve 302 and the ball 304 are pushed into the groove 201, and then the sliding sleeve 302 is fixedly connected to the secondary joint 301 by bolts.

[0047] During the operation of the robot arm 1, the friction generated by the sliding sleeve 302 and the ball 304 and the rolling contact friction with the joint 2 can greatly reduce the friction force, thereby reducing the working noise, improving the working environment and the quality of use, and at the same time, the micro-transport pump 204 can be manually turned on to pump the lubricating oil into the groove 201 through the oil storage tank 202 and the guide groove 203, so as to perform self-lubrication on the connection structure, thereby further improving the quality of use of the robot arm;

[0048] After manually turning on the servo motor 404 to drive the joint 2 to rotate and completing the rotation movement of the robotic arm, you can also manually turn on the external air pump and use the connecting air nozzle 5 to inflate the micro air cushion 402. The deformation caused by the inflation pushes the positioning rod 401 into the corresponding socket 6 to complete the locking and fixing operation of the joint 2, thereby improving the stability and safety of use and making it less susceptible to rotation due to external forces.

[0049] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mechanical joint of a robotic arm, characterized in that: The invention comprises a mechanical arm (1), a joint (2) and a mounting assembly (3), wherein one end of the mechanical arm (1) is provided with the joint (2), the mechanical arm (1) comprises the mounting assembly (3), and the other end of the joint (2) is provided with a bearing mounting seat (4); The mounting assembly (3) comprises a secondary joint (301), and the secondary joint (301) is bolted to one end of the mechanical arm (1), a sliding sleeve (302) is provided on the outer sleeve of the secondary joint (301), a ball groove (303) is provided on the outer surface of the sliding sleeve (302), and a ball (304) is rollingly connected in the ball groove (303).

2. A mechanical joint of a robot arm according to claim 1, characterized in that: The inner side of the mounting seat (4) is sleeved and connected to the positioning rod (401); the inner side of the mounting seat (4) is connected to the micro air cushion (402) by gluing; and the outer side of the positioning rod (401) in the mounting seat (4) is sleeved with a spring (403).

3. The mechanical joint of a robot arm according to claim 1, characterized in that: The inner surface of the joint (2) is provided with a groove (201) corresponding to the sliding sleeve (302); an oil storage groove (202) and a guide groove (203) are provided in the joint (2); a micro-delivery pump (204) is provided between the oil storage groove (202) and the guide groove (203); a feed end of the micro-delivery pump (204) is connected to the oil storage groove (202) via a pipeline; a discharge end of the micro-delivery pump (204) is connected to the guide groove (203) via a hose; and a plug hole (205) is provided on the surface of the joint (2), and the plug hole (205) passes through the groove (201).

4. The mechanical joint of a robot arm according to claim 1, characterized in that: The mounting seat (4) is connected to a servo motor (404) via bolts, and the servo motor (404) is connected to the joint (2) via a drive shaft.

5. The mechanical joint of a robot arm according to claim 1, characterized in that: Both sides of the secondary joint (301) are sleeved and connected to the insertion rod (305), and both sides of the secondary joint (301) are provided with sliding grooves (306), and the insertion rod (305) is slidably connected to the sliding grooves (306) through sliders on both sides, and a compression spring (307) is installed on the inner side of the insertion rod (305) in the secondary joint (301) through a spring seat.

6. The mechanical joint of a robot arm according to claim 2, characterized in that: An air nozzle (5) is provided on the surface of the mounting seat (4), and an air outlet end of the air nozzle (5) is connected to the micro air cushion (402) via a hose.

7. The mechanical joint of a robot arm according to claim 2, characterized in that: A plug hole (6) corresponding to the positioning rod (401) is provided on the surface of one end of the joint (2).

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