Low-voltage micro-arc machining head quickly connected with mechanical arm

Abstract

The utility model relates to the technical field of low-voltage micro-arc machining heads, and discloses a low-voltage micro-arc machining head quickly connected with a mechanical arm, which comprises a low-voltage micro-arc machining head body, the upper surface of the low-voltage micro-arc machining head body is fixedly connected with a connecting bracket, and the upper surface of the connecting bracket is provided with a quick connecting component; the quick connecting assembly comprises a mounting sleeve, the mounting sleeve is fixedly connected to the upper surface of the connecting support, mounting boxes are fixedly connected to the two sides of the mounting sleeve, bidirectional studs are rotationally connected into the mounting boxes, and driven bevel gears are fixedly connected to the middles of the bidirectional studs. According to the utility model, the two clamping plates can limit and fasten the inserted mounting shaft only by rotating the turntable without additionally searching for a mounting tool or screwing a plurality of bolts and screws one by one, so that the mounting efficiency and convenience are remarkably improved, and when the machining head is vibrated in the machining process, a spring in the buffer assembly can be used for buffering the machining head. And the connection between the mounting shaft and the machining head is effectively buffered.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure micro-arc processing head technology, and in particular to a low-pressure micro-arc processing head that can be quickly connected to a robotic arm. Background Technology

[0002] A robotic arm is an automated mechanical device with functions similar to a human arm, capable of performing various tasks. It is programmable, can accept instructions, and move objects according to their spatial position and posture to achieve precise operations. A low-pressure micro-arc machining head is a tool used for electrical discharge machining. Its working principle is to remove metal by rapidly and repeatedly discharging a series of electrodes between the workpiece in a liquid dielectric. This machining method has the advantages of high workpiece machining accuracy and good surface quality. The automation characteristics of the robotic arm enable it to automatically execute machining tasks. When connected to a low-pressure micro-arc machining head, automated production can be achieved, improving production efficiency.

[0003] A search revealed Chinese patent CN220480259U, which discloses a portable low-voltage micro-arc electric spindle device. This addresses the issue that existing electrical discharge machining (EDM) equipment is generally bulky and complex in internal structure, resulting in large electric spindles that are unsuitable for smaller EDM devices, lacking adaptability. Furthermore, the complex power supply structure of these large spindles makes them difficult to replace, and their portability is insufficient, making carrying and installation cumbersome and unable to meet the needs of different processing scenarios, thus limiting their practicality. Existing small spindle structures, limited by materials and structural design, often require compromises in insulation performance and rotational stability, failing to meet the requirements of low-voltage micro-arc machining and exhibiting poor adaptability. Therefore, this patent is designed to be suitable for small EDM equipment, reducing the overall size of the spindle for easier portability, simplifying the installation process, and lowering the difficulty of assembly and positioning.

[0004] In existing technologies, when mounting a low-pressure micro-arc machining head onto the mounting shaft of a robotic arm, a welding connection is typically used for fixation. However, when easy disassembly and reassembly of the low-pressure micro-arc machining head are required, multiple bolts and screws are usually used to tighten the low-pressure micro-arc machining head to the mounting shaft of the robotic arm. When installing bolts and screws, nuts and screwdrivers are usually required. It is usually difficult to tighten the bolts and screws manually, which requires additional installation tools when installing the low-pressure micro-arc machining head, reduces the connection efficiency between the low-pressure micro-arc machining head and the robotic arm, and delays the installation progress. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a low-pressure micro-arc processing head that can be quickly connected to a robotic arm.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a low-pressure micro-arc processing head that can be quickly connected to a robotic arm, comprising a low-pressure micro-arc processing head body, wherein a quick-connect component is provided on the upper surface of the low-pressure micro-arc processing head body;

[0007] The quick-connect assembly includes a mounting sleeve, which is fixedly connected to the upper surface of the low-pressure micro-arc machining head body. Mounting boxes are fixedly connected to both sides of the mounting sleeve. A bidirectional stud is rotatably connected inside the mounting box. A driven bevel gear is fixedly connected to the middle of the bidirectional stud. Two moving blocks are threaded to the outside of the bidirectional stud. A push-pull rod is hinged to one side of each moving block. A clamping plate is hinged to one end of each of the two push-pull rods. Multiple rubber balls are provided on one side of the clamping plate.

[0008] As a further description of the above technical solution:

[0009] The inner wall of the mounting box is rotatably connected to a drive bevel gear, and the drive bevel gear and the driven bevel gear are meshed together.

[0010] As a further description of the above technical solution:

[0011] A rotating rod is fixedly connected to the middle of the active bevel gear, and a fixed shell is fixedly connected to one side of the two mounting boxes. The two rotating rods are rotatably connected inside the fixed shell.

[0012] As a further description of the above technical solution:

[0013] One end of the rotating rod is fixedly connected to a driven sprocket, a turntable is rotatably connected to the middle of the fixed shell, and two driving sprockets are rotatably connected to one side of the turntable.

[0014] As a further description of the above technical solution:

[0015] A chain is meshed between the driving sprocket and the driven sprocket, and a first storage groove is provided on each side of the inner wall of the mounting sleeve.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the mounting sleeve is provided with a buffer assembly, which includes two second storage slots. The two second storage slots are opened on both sides of the inner wall of the mounting sleeve, and multiple mounting slots are opened on one side of the second storage slots.

[0018] As a further description of the above technical solution:

[0019] The upper surface of the mounting sleeve has two sliding grooves. A spring is fixedly connected inside the mounting groove. A push block is fixedly connected to one end of the spring. A buffer plate is fixedly connected to one end of a plurality of push blocks. A slider is fixedly connected to the inner wall of the buffer plate. The slider is slidably connected inside the sliding groove.

[0020] This utility model has the following beneficial effects:

[0021] This invention, through the setting of quick-connect components, allows for the connection of the low-pressure micro-arc processing head with the robotic arm. After the mounting sleeve is inserted into the robotic arm's mounting shaft, the turntable is rotated to limit and secure the inserted mounting shaft with two clamping plates. This helps improve installation efficiency and convenience, eliminating the need to find additional installation tools and tighten multiple bolts and screws one by one, thus speeding up the installation process. At the same time, the action of multiple rubber balls helps improve the anti-slip properties of the clamping plates during clamping.

[0022] This invention, through the inclusion of a buffer component, allows the low-pressure micro-arc machining head, after being connected to the mounting shaft of the robotic arm, to experience vibrations during machining. The spring force is transmitted to the push block and buffer plate, effectively buffering the connection between the mounting shaft and the machining head. This reduces the risk of damage to the mounting shaft and reduced structural strength caused by frequent vibrations generated when the machining head drives the mounting sleeve outside the mounting shaft. Furthermore, the spring force helps to further enhance the tightness of the mounting sleeve when mounted outside the mounting shaft. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0024] Figure 2 This is a partial structural diagram of the push-pull rod connection proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the clamping plate structure proposed in this utility model;

[0026] Figure 4 This is a schematic cross-sectional view of the mounting box proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the mounting sleeve structure proposed in this utility model;

[0028] Figure 6 This is a schematic diagram of the pusher block structure proposed in this utility model.

[0029] Legend:

[0030] 1. Low-pressure micro-arc machining head body; 2. Mounting sleeve; 3. Mounting box; 4. Bidirectional stud; 5. Driven bevel gear; 6. Moving block; 7. Push-pull rod; 8. Clamping plate; 9. Rubber ball; 10. Driven bevel gear; 11. Rotating rod; 12. Driven sprocket; 13. Turntable; 14. Driven sprocket; 15. Chain; 16. Fixed shell; 17. First storage slot; 18. Second storage slot; 19. Mounting slot; 20. Slide groove; 21. Spring; 22. Push block; 23. Buffer plate; 24. Slider. Detailed Implementation

[0031] 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.

[0032] As attached Figure 1-6 As shown, one embodiment of this utility model is provided: a low-pressure micro-arc processing head that can be quickly connected to a robotic arm, including a low-pressure micro-arc processing head body 1, a connecting bracket fixedly connected to the upper surface of the low-pressure micro-arc processing head body 1, and a quick-connect component provided on the upper surface of the connecting bracket.

[0033] The quick-connect assembly includes a mounting sleeve 2, which is fixedly connected to the upper surface of the connecting bracket. Mounting boxes 3 are fixedly connected to both sides of the mounting sleeve 2. A double-acting stud 4 is rotatably connected inside the mounting box 3. A driven bevel gear 5 is fixedly connected to the middle of the double-acting stud 4. Two moving blocks 6 are threadedly connected to the outside of the double-acting stud 4. A push-pull rod 7 is hinged to one side of each moving block 6. A clamping plate 8 is hinged to one end of each push-pull rod 7. Multiple rubber balls 9 are provided on one side of the clamping plate 8. The double-acting stud 4 has two threads in opposite directions on its exterior. The push-pull rod 7 facilitates pushing and pulling the clamping plate 8, and the rubber balls 9 help increase the friction on the connected mounting shaft.

[0034] As attached Figure 4As shown, a drive bevel gear 10 is rotatably connected to one side of the inner wall of the mounting box 3. The drive bevel gear 10 and the driven bevel gear 5 are meshed. A rotating rod 11 is fixedly connected to the middle of the drive bevel gear 10. A fixed housing 16 is fixedly connected to one side of the two mounting boxes 3. The two rotating rods 11 are rotatably connected inside the fixed housing 16. A driven sprocket 12 is fixedly connected to one end of the rotating rod 11. A turntable 13 is rotatably connected to the middle of the fixed housing 16. Two drive sprockets 14 are rotatably connected to one side of the turntable 13. A chain 15 is meshed between the drive sprocket 14 and the driven sprocket 12. The rotating rod 11 facilitates the connection between the driven sprocket 12 and the drive bevel gear 10, so that they rotate synchronously. The fixed housing 16 provides protection for the internal components.

[0035] As attached Figure 5 As shown, the inner wall of the mounting sleeve 2 is provided with first storage slots 17 on both sides. The inner wall of the mounting sleeve 2 is provided with a buffer assembly, which includes two second storage slots 18. The two second storage slots 18 are provided on both sides of the inner wall of the mounting sleeve 2. Multiple mounting slots 19 are provided on one side of the second storage slots 18. Two sliding grooves 20 are provided on the upper surface of the mounting sleeve 2. The first storage slots 17 facilitate the storage of the clamping plate 8, and the second storage slots 18 facilitate the storage of the buffer plate 23.

[0036] As attached Figure 2 As shown, a spring 21 is fixedly connected inside the mounting groove 19. A push block 22 is fixedly connected to one end of the spring 21. A buffer plate 23 is fixedly connected to one end of a plurality of push blocks 22. A slider 24 is fixedly connected to the inner wall of the buffer plate 23. The slider 24 is slidably connected inside the slide groove 20. The spring 21 transmits its elastic force to the buffer plate 23 through the push block 22. When the slider 24 slides inside the slide groove 20, it facilitates the limiting function of the buffer plate 23.

[0037] Working principle: When using the low-pressure micro-arc machining head body 1 in the existing technology, the low-pressure micro-arc machining head is based on electrochemical discharge machining technology. Combining the physicochemical effects of micro-arc discharge, a micro-arc discharge is generated between the electrode and the workpiece through a low-voltage power supply. The high-temperature and high-pressure plasma in the discharge channel is used to remove materials, modify the surface, or functionalize the workpiece surface. After the connecting bracket is installed on the low-pressure micro-arc machining head body 1, when connecting it to the mounting shaft of the robotic arm, the mounting shaft is first inserted into the inside of the mounting sleeve 2, and then the turntable 13 is rotated. The turntable 13 simultaneously drives the two active sprockets 14 to rotate, which, under the connection of the chain 15, drives the driven sprocket. 12 rotates, and the driven sprocket 12 drives the rotating rod 11 to rotate, which in turn drives the driving bevel gear 10 to rotate. Under the meshing of the driving bevel gear 10 and the driven bevel gear 5, the driven bevel gear 5 rotates, which in turn drives the bidirectional stud 4 to rotate. The external of the bidirectional stud 4 is set with threads in opposite directions, which causes the two moving blocks 6 to move closer to each other. This helps to push the corresponding clamping plate 8 out of the first receiving groove 17 under the action of the push-pull rod 7. Under the action of multiple rubber balls 9, the clamping plates 8 on both sides clamp the mounting shaft of the robotic arm, thus fixing the low-pressure micro-arc processing head body 1.

[0038] When the mounting shaft is installed inside the mounting sleeve 2, the spring 21 pushes the push block 22, and the multiple push blocks 22 push the buffer plate 23. The buffer plate 23 drives the slider 24 to slide inside the slide groove 20. Under the action of the spring force of the spring 21, the buffer plate 23, supported by the spring 21, will buffer the vibration force to a certain extent when the mounting sleeve 2 vibrates, reducing the impact force of the vibration on the mounting shaft. Furthermore, the spring 21 pushes the push block 22 and pushes the buffer plate 23, which facilitates the buffer plates 23 on both sides to clamp the mounting shaft, thereby further improving the tightness of the mechanical arm mounting shaft installed inside the mounting sleeve 2.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-pressure micro-arc machining head that can be quickly connected to a robotic arm, comprising a low-pressure micro-arc machining head body (1), characterized in that: A connecting bracket is fixedly connected to the upper surface of the low-pressure micro-arc processing head body (1), and a quick-connect component is provided on the upper surface of the connecting bracket. The quick-connect assembly includes a mounting sleeve (2), which is fixedly connected to the upper surface of the connecting bracket. Mounting boxes (3) are fixedly connected to both sides of the mounting sleeve (2). A double-acting stud (4) is rotatably connected inside the mounting box (3). A driven bevel gear (5) is fixedly connected to the middle of the double-acting stud (4). Two moving blocks (6) are threaded to the outside of the double-acting stud (4). A push-pull rod (7) is hinged to one side of the moving block (6). A clamping plate (8) is hinged to one end of the two push-pull rods (7). A plurality of rubber balls (9) are provided on one side of the clamping plate (8).

2. The low-pressure micro-arc processing head for quick connection with a robotic arm according to claim 1, characterized in that: The inner wall of the mounting box (3) is rotatably connected to a drive bevel gear (10), and the drive bevel gear (5) is meshed with the drive bevel gear (5).

3. The low-pressure micro-arc processing head for quick connection with a robotic arm according to claim 2, characterized in that: A rotating rod (11) is fixedly connected to the middle of the active bevel gear (10), and a fixed shell (16) is fixedly connected to one side of the two mounting boxes (3). The two rotating rods (11) are rotatably connected inside the fixed shell (16).

4. The low-pressure micro-arc processing head for quick connection with a robotic arm according to claim 3, characterized in that: One end of the rotating rod (11) is fixedly connected to a driven sprocket (12), and a turntable (13) is rotatably connected to the middle of the fixed shell (16). Two driving sprockets (14) are rotatably connected to one side of the turntable (13).

5. The low-pressure micro-arc processing head for quick connection with a robotic arm according to claim 4, characterized in that: A chain (15) is meshed between the driving sprocket (14) and the driven sprocket (12), and a first storage groove (17) is provided on both sides of the inner wall of the mounting sleeve (2).

6. The low-pressure micro-arc processing head for quick connection with a robotic arm according to claim 1, characterized in that: The inner wall of the mounting sleeve (2) is provided with a buffer assembly, which includes two second storage slots (18). The two second storage slots (18) are opened on both sides of the inner wall of the mounting sleeve (2), and multiple mounting slots (19) are opened on one side of the second storage slots (18).

7. The low-pressure micro-arc processing head for quick connection with a robotic arm according to claim 6, characterized in that: The upper surface of the mounting sleeve (2) has two sliding grooves (20). A spring (21) is fixedly connected inside the mounting groove (19). A push block (22) is fixedly connected to one end of the spring (21). A buffer plate (23) is fixedly connected to one end of a plurality of push blocks (22). A slider (24) is fixedly connected to the inner wall of the buffer plate (23). The slider (24) is slidably connected inside the sliding groove (20).

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