Electric spark machining machine for robot part machining

Abstract

The utility model discloses an electric spark machining machine for robot part machining, which belongs to the technical field of electric spark machining, and comprises a joint driving mechanical arm, the inner side of the joint driving mechanical arm is movably connected with a wired electrode cutting head, and the bottom of the wired electrode cutting head is movably connected with an automatic transmission machining mechanism. The inner side of the automatic conveying and machining mechanism is movably connected with a quick disassembling and assembling mechanism, efficient circulation of workpieces can be achieved, the problem that high-continuity and high-fluency automatic machining is difficult to achieve due to the fact that feeding and discharging are tedious due to complex clamping is effectively solved, and for the workpieces with special shapes, the machining efficiency is improved. A stability guarantee mechanism in the conveying process can avoid displacement or deviation caused by unstable clamping, the position accuracy of workpieces in the conveying and machining connection link is guaranteed, the stability and reliability of the whole electric spark machining process are enhanced, and the machining process is pushed to run more smoothly and efficiently.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machining technology, and in particular to an electrical discharge machining machine for machining robot parts. Background Technology

[0002] In modern manufacturing, with the increasing demands for precision and complex shapes in parts processing, traditional machining faces numerous challenges. Some high-hardness, high-strength, and high-toughness materials, such as mold steel and cemented carbide, are difficult to process or produce poor results using traditional cutting methods. Electrical discharge machining (EDM) technology has emerged to address this need. It uses the instantaneous high temperature generated by pulsed spark discharge between the electrode and the workpiece to erode the material. It can process complex shapes and is not limited by the hardness of the material. Among EDM technologies, wire EDM stands out. It uses a continuously moving fine metal wire as the electrode and precisely controls the trajectory of the electrode wire through a CNC system. It can cut various high-precision two-dimensional graphics and is widely used in many fields such as mold manufacturing and aerospace.

[0003] In the existing technology, some traditional clamping tools cannot effectively clamp the workpiece, thus failing to effectively limit the workpiece. Moreover, during EDM, EDM produces EDM carbon slag and slag discharge. In practice, the removal of carbon slag is often sacrificed to reduce the processing speed, which greatly affects the efficiency of EDM.

[0004] To address the aforementioned issues, an existing patent (publication number: CN215698608U) proposes an EDM machine for machining robot parts. A motor is fixedly connected to the right side of the housing, with a small gear fixedly connected to the end of the motor spindle. A large gear is located outside the small gear, and a screw feeder is fixedly connected to the left side of the large gear. The screw feeder is rotatably connected to the housing, and a chip hopper is fixedly connected to the top of the housing. In this invention, an electric telescopic rod, clamping plate, fixed rod, and sliding rod are used. Activating the electric telescopic rod causes the rotating rod to slide inwards towards the operating table, where a roller contacts it, improving stability. This allows the support rod to move towards the workpiece on the fixed rod, clamping the workpiece with the clamping plate. The arc-shaped clamping plate facilitates increased contact area for clamping components of different shapes, effectively limiting the movement of workpieces of different sizes, thus significantly improving the EDM cutting effect.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, when performing wire EDM on workpieces, the complex clamping process makes loading and unloading the workpieces extremely cumbersome, making it difficult to achieve highly continuous and smooth automated processing. Furthermore, it is difficult to achieve stable clamping for workpieces with extremely special or irregular contact surfaces.

[0006] To address this, an electrical discharge machining (EDM) machine for machining robot parts is proposed. Utility Model Content

[0007] The purpose of this invention is to provide an electrical discharge machining (EDM) machine for machining robot parts, which can solve the problems of poor continuity and smoothness of existing EDM wire cutting and difficulty in clamping workpieces with special shapes.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an electrical discharge machining (EDM) machine for machining robot parts, comprising a joint-driven robotic arm, a wire electrode cutting head movably connected to the inner side of the joint-driven robotic arm, an automated transfer processing mechanism movably connected to the bottom of the wire electrode cutting head, and a quick assembly / disassembly mechanism movably connected to the inner side of the automated transfer processing mechanism.

[0009] The automated transmission and processing mechanism includes a transmission belt, a mounting groove, an elastic tension mounting box, a support plate, and a clamping assembly. The transmission belt is located at the bottom of the wire electrode cutting head. The mounting groove is opened on the inner side of the transmission belt. The elastic tension mounting box is fixedly connected to the inner side of the mounting groove. The support plate is movably connected to the inner side of the elastic tension mounting box. The clamping assembly is movably connected to the outer side of the support plate.

[0010] Preferably, an installation plate is movably connected to the bottom of the inner side of the elastic tension mounting box, the bearing plate is fixedly connected to the top of the installation plate, and a first elastic telescopic support is fixedly connected to both the left and right sides of the installation plate, and an installation card is fixedly connected to the outer side of the first elastic telescopic support.

[0011] Preferably, the inner side of the elastic tension mounting box is provided with a mounting slot, and the mounting plate is movably connected to the inner side of the mounting slot.

[0012] Preferably, a second elastic telescopic support is fixedly connected to the top of the support plate, and a handle is fixedly connected to the top of the second elastic telescopic support. Both the handle and the outer side of the mounting plate are rotatably connected to a linkage rod.

[0013] Preferably, a positioning plate is slidably connected to the top of the bearing plate, an elastic clamping pad is fixedly connected to the outside of the positioning plate, and a connecting plate is fixedly connected to the bottom of the positioning plate.

[0014] Preferably, an electric turntable is fixedly connected to the bottom of the inner side of the bearing plate, and a pull rod is rotatably connected to the outer side of both the electric turntable and the connecting plate, and a compression spring is fixedly connected to the inner side of both the connecting plate and the bearing plate.

[0015] Preferably, a transmission support base is movably connected to the outer side of the transmission belt.

[0016] Preferably, a processing table is fixedly connected to the left side of the transmission support base, and the joint-driven robotic arm is movably connected to the right side of the processing table.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The automated transfer processing mechanism of this application can realize the efficient flow of workpieces, effectively solving the problem that the complex clamping makes it difficult to achieve high continuity and smoothness of automated processing due to cumbersome loading and unloading. In the transfer process, the workpieces to be processed can be accurately transported to the processing area in sequence, and after processing, they can be smoothly transferred to the unloading point. This greatly reduces the time and effort spent on manual intervention, and improves the overall automation level and efficiency of processing. For workpieces with special shapes, the stability guarantee mechanism in the transfer process can avoid displacement or deviation caused by unstable clamping, and ensure the position accuracy of the workpiece in the connection between transfer and processing. This strongly assists the stable development of subsequent processing steps, and provides a solid and reliable transfer support for the high-precision EDM of complex-shaped workpieces. It enhances the stability and reliability of the entire EDM process and promotes a smoother and more efficient operation of the processing process.

[0019] 2. This application features an installation mechanism with a handle for easy operation, facilitating manual installation. The elastic telescopic support cushions the impact of the mounting plate and slot connection, ensuring precise and stable insertion and preventing component damage. The tight fit between the mounting plate and slot ensures the mounting plate remains stable and secure, improving processing accuracy and quality. Its convenience also shortens the material loading and unloading process, enhancing continuity and workflow. Attached Figure Description

[0020] Figure 1 An overall structural diagram of the electrical discharge machining machine for machining robot parts according to this utility model;

[0021] Figure 2 This is a partial structural diagram of the transmission belt of this utility model;

[0022] Figure 3 This is an overall structural diagram of the automated transmission and processing mechanism of this utility model;

[0023] Figure 4 This is an overall structural diagram of the clamping assembly of this utility model;

[0024] Figure 5 This is an overall structural diagram of the quick assembly / disassembly mechanism of this utility model.

[0025] In the diagram: 1. Joint-driven robotic arm; 2. Wire electrode cutting head; 3. Automated transmission and processing mechanism; 31. Transmission belt; 32. Mounting slot; 33. Elastic tension mounting box; 34. Bearing plate; 35. Clamping assembly; 35a. Positioning plate; 35b. Elastic clamping pad; 35c. Linkage plate; 35d. Electric turntable; 35e. Pull rod; 35f. Compression spring; 4. Quick disassembly and assembly mechanism; 41. Mounting plate; 42. First elastic telescopic support column; 43. Mounting plate; 44. Mounting slot; 45. Second elastic telescopic support column; 46. Handle; 47. Linkage rod; 5. Transmission support base; 6. Processing table. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] An electrical discharge machining (EDM) machine for machining robot parts includes a joint-driven robotic arm 1, a wire electrode cutting head 2 movably connected to the inner side of the joint-driven robotic arm 1, an automated transfer processing mechanism 3 movably connected to the bottom of the wire electrode cutting head 2, and a quick assembly / disassembly mechanism 4 movably connected to the inner side of the automated transfer processing mechanism 3.

[0029] The automated transmission processing mechanism 3 includes a transmission belt 31, a mounting groove 32, an elastic tension mounting box 33, a support plate 34, and a clamping assembly 35. The transmission belt 31 is located at the bottom of the online electrode cutting head 2. The mounting groove 32 is opened on the inner side of the transmission belt 31. The elastic tension mounting box 33 is fixedly connected to the inner side of the mounting groove 32. The support plate 34 is movably connected to the inner side of the elastic tension mounting box 33. The clamping assembly 35 is movably connected to the outer side of the support plate 34.

[0030] In this embodiment: continuous feeding, unloading and processing can be achieved through the conveyor belt 31, the elastic tension mounting box 33 can be fixed through the mounting groove 32, and the metal plate to be processed can be easily fixed through the bearing plate 34 and the clamping mechanism, and then installed in the elastic tension mounting box 33 for automated processing through the bearing plate 34.

[0031] Specifically, such as Figure 2 , Figure 5As shown, an installation plate 41 is movably connected to the bottom of the inner side of the elastic tension mounting box 33, and a bearing plate 34 is fixedly connected to the top of the installation plate 41. A first elastic telescopic support column 42 is fixedly connected to both the left and right sides of the installation plate 41, and an installation card plate 43 is fixedly connected to the outer side of the first elastic telescopic support column 42.

[0032] Specifically, such as Figure 2 , Figure 5 As shown, the inner side of the elastic tension mounting box 33 is provided with a mounting slot 44, and the mounting plate 43 is movably connected to the inner side of the mounting slot 44.

[0033] Specifically, such as Figure 2 , Figure 5 As shown, a second elastic telescopic support column 45 is fixedly connected to the top of the bearing plate 34, and a handle 46 is fixedly connected to the top of the second elastic telescopic support column 45. A connecting rod 47 is rotatably connected to both the handle 46 and the outer side of the mounting plate 43.

[0034] In this embodiment: the carrying plate 34 is lifted by the handle 46. When the handle 46 is lifted, the second elastic telescopic support 45 at the bottom is stretched to raise it and drive the connecting rod 47. The mounting plate 43, which is slidably connected to the mounting plate 41 on the other side of the connecting rod 47, slides inward and presses the first elastic telescopic support 42 between it and the mounting plate 41. After the mounting plate 41 and the carrying plate 34 are placed in the elastic telescopic mounting box 33 at the material loading position of the conveyor belt 31, the handle 46 is released. The second and first elastic telescopic supports 42 spring back, the handle 46 returns to its position, the mounting plate 43 pops out and snaps into the mounting slot 44, and the positioned metal plate to be processed is loaded into the elastic telescopic mounting box 33. When the workpiece reaches the unloading point, the operator quickly unloads it by lifting the handle 46 and collects the processed metal plate.

[0035] Specifically, such as Figure 3 , Figure 4 As shown, a positioning plate 35a is slidably connected to the top of the bearing plate 34, an elastic clamping pad 35b is fixedly connected to the outside of the positioning plate 35a, and a linkage plate 35c is fixedly connected to the bottom of the positioning plate 35a.

[0036] Specifically, such as Figure 3 , Figure 4 As shown, an electric turntable 35d is fixedly connected to the bottom of the inner side of the bearing plate 34. A pull rod 35e is rotatably connected to the outer side of both the electric turntable 35d and the connecting plate 35c. A compression spring 35f is fixedly connected to the inner side of both the connecting plate 35c and the bearing plate 34.

[0037] In this embodiment: by activating the electric turntable 35d driven by the motor at the bottom of the support plate 34, the turntable rotates, causing the pull rods 35e on both sides to rotate along its outer side and pull the connecting plates 35c on both sides to slide inside the support plate 34 and move inward at the same time. This causes the connecting plates 35c to move inward with the positioning clamping plate 35a to clamp the metal plate to be processed. When moving inward, the connecting plates 35c press against the compression spring 35f between the support plate 34 to provide a buffering effect, preventing the metal plate surface from being damaged by excessive clamping. After contacting the metal plate, the elastic clamping pad 35b on the surface adheres to it to achieve a tight fit. After clamping, the operation is repeated multiple times to load the metal plate to be processed.

[0038] Specifically, such as Figure 1 As shown, a transmission support base 5 is movably connected to the outer side of the transmission belt 31.

[0039] Specifically, such as Figure 1 As shown, a processing table 6 is fixedly connected to the left side of the transmission support base 5, and a joint-driven robotic arm 1 is movably connected to the right side of the processing table 6.

[0040] In this embodiment: the transmission support base 5 can support the transmission belt 31, and the processing table 6 can support the joint-driven robotic arm 1.

[0041] Working Principle: Before processing robot parts, the robot parts need to be wire-cut into special-shaped shells or internal special parts using raw metal sheets via electrical discharge machining. The operator places the metal sheet to be processed in the center of the support plate 34 and then starts the electric turntable 35d at the bottom of the support plate 34. The electric turntable 35d is driven by a motor located inside the support plate 34. During the rotation of the electric turntable 35d, it drives the pull rods 35e on both sides to rotate along the outer side of the electric turntable 35d, pulling the connecting plates 35c on both sides to slide inside the support plate 34 and simultaneously move inward. This achieves the linkage between the connecting plates 35c and the positioning clamping plate 35a, causing them to clamp the metal sheet to be processed simultaneously inward. During the process, the connecting plate 35c presses against the compression spring 35f between itself and the bearing plate 34, acting as a buffer to prevent damage to the metal sheet surface caused by excessive clamping speed. Upon contact with the metal sheet, the elastic clamping pad 35b adheres tightly to it. After clamping, the above operation is repeated multiple times to install the metal sheets to be processed. Then, the bearing plate 34 is lifted using the handle 46. Lifting the handle 46 stretches the bottom second elastic telescopic support 45, raising it and driving the bottom connecting rod 47. This causes the mounting plate 43, which is slidably connected to the mounting plate 41, to slide inward and retract, pressing the mounting plate 43 against the mounting plate 41. The first elastic telescopic support 42 and the second elastic telescopic support 45 are both composed of telescopic and elastic elements. By lifting the entire mounting plate 41 and the bearing plate 34 into the elastic tension mounting box 33 at the feeding position at the front end of the conveyor belt 31, and then releasing the handle 46, the second elastic telescopic support 45 and the first elastic telescopic support 42 spring back, causing the handle 46 to return to its original position. This causes the mounting plate 43 to quickly pop out and engage in the mounting slot 44, thereby installing the positioned metal plate to be processed into the elastic tension mounting box 33. The plate is then transferred in a stepped manner via the conveyor belt 31, which can move towards the discharge position at regular intervals. The machine moves a certain distance to replace the processed metal plate located at the center of the conveyor belt 31. A joint-driven robotic arm 1, supported by a processing table 6, is set behind the transmission support base 5 at the center of the conveyor belt 31. It can perform electrical discharge wire cutting on the positioned metal plate using a wire electrode cutting head 2. After cutting, it performs automated rotation and transfer. When the workpiece reaches the unloading point via the conveyor belt 31, the operator can quickly unload it by lifting the handle 46, thus quickly recovering the processed metal plate. The elastic tension mounting box 33 is nested in the mounting groove 32 inside the conveyor belt 31. When flipping, it only needs slight stretching to complete the reversal. In summary, this method achieves the effect of automated, high-efficiency processing and quick loading and unloading.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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. An electrical discharge machining (EDM) machine for machining robot parts, comprising a joint-driven robotic arm (1), characterized in that: The inner side of the joint-driven robotic arm (1) is movably connected to a wire electrode cutting head (2), the bottom of the wire electrode cutting head (2) is movably connected to an automated transmission and processing mechanism (3), and the inner side of the automated transmission and processing mechanism (3) is movably connected to a quick disassembly and assembly mechanism (4). The automated transmission processing mechanism (3) includes a transmission belt (31), a mounting groove (32), an elastic tension mounting box (33), a support plate (34), and a clamping assembly (35). The transmission belt (31) is located at the bottom of the online electrode cutting head (2). The mounting groove (32) is opened on the inner side of the transmission belt (31). The elastic tension mounting box (33) is fixedly connected to the inner side of the mounting groove (32). The support plate (34) is movably connected to the inner side of the elastic tension mounting box (33). The clamping assembly (35) is movably connected to the outer side of the support plate (34).

2. The electrical discharge machining (EDM) machine for machining robot parts according to claim 1, characterized in that: The bottom of the inner side of the elastic tension mounting box (33) is movably connected to the mounting plate (41), the bearing plate (34) is fixedly connected to the top of the mounting plate (41), the left and right sides of the mounting plate (41) are both fixedly connected to the first elastic telescopic support column (42), and the outer side of the first elastic telescopic support column (42) is fixedly connected to the mounting plate (43).

3. The electrical discharge machining (EDM) machine for machining robot parts according to claim 2, characterized in that: The inner side of the elastic tension mounting box (33) is provided with a mounting slot (44), and the mounting plate (43) is movably connected to the inner side of the mounting slot (44).

4. The electrical discharge machining (EDM) machine for machining robot parts according to claim 2, characterized in that: The top of the bearing plate (34) is fixedly connected to a second elastic telescopic support column (45), and the top of the second elastic telescopic support column (45) is fixedly connected to a handle (46). The handle (46) and the outer side of the mounting plate (43) are both rotatably connected to a connecting rod (47).

5. The electrical discharge machining (EDM) machine for machining robot parts according to claim 1, characterized in that: A positioning plate (35a) is slidably connected to the top of the bearing plate (34), an elastic clamping pad (35b) is fixedly connected to the outside of the positioning plate (35a), and a linkage plate (35c) is fixedly connected to the bottom of the positioning plate (35a).

6. The electrical discharge machining (EDM) machine for machining robot parts according to claim 5, characterized in that: An electric turntable (35d) is fixedly connected to the bottom of the inner side of the bearing plate (34). A pull rod (35e) is rotatably connected to the outer side of the electric turntable (35d) and the connecting plate (35c). A compression spring (35f) is fixedly connected to the inner side of the connecting plate (35c) and the bearing plate (34).

7. The electrical discharge machining (EDM) machine for machining robot parts according to claim 1, characterized in that: The outer side of the transmission belt (31) is movably connected to the transmission support base (5).

8. The electrical discharge machining (EDM) machine for machining robot parts according to claim 7, characterized in that: The processing table (6) is fixedly connected to the left side of the transmission support base (5), and the joint-driven robotic arm (1) is movably connected to the right side of the processing table (6).

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