A combined electrode for electrode processing

Abstract

The utility model relates to the technical field of electric spark machining electrode, concretely relates to a kind of combination electrode of electrode processing, including base and multiple electrode;Electrode includes bottom plate and processing part;The side of bottom plate is detachably connected to base, and the other side is provided with processing part;Several bottom plates are distributed in straight line in base, so that several electrodes are distributed in straight line.The combination electrode of electrode processing of the utility model in the electric spark machining process, electric spark machining machine first uses a group of electrodes to groove, then moves and switches to another group of electrodes to carry out right-angle correction.This can conveniently complete the switching of different function electrodes, without splitting processing and correction into two independent processes, to improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of electrical discharge machining electrodes, and more specifically, to a combined electrode for electrode processing. Background Technology

[0002] In the field of electrical discharge machining (EDM), electrode wear is one of the key factors affecting the forming accuracy of workpieces. When an electrode performs grooving on a workpiece under the action of high-frequency pulse discharge, its leading edge gradually wears away due to continuous electro-erosion, forming a natural arc-shaped contour. This shape change directly results in the bottom of the machined groove exhibiting an arc transition, which cannot meet the design requirement of maintaining a strict right angle between the groove bottom and the groove wall in precision mechanical parts. Especially in high-precision scenarios such as mold manufacturing and aerospace component processing, such shape deviations will seriously affect the product assembly accuracy and performance. To correct these defects, the industry generally adopts a two-stage processing technique: first, initial grooving of workpieces is completed in batches using the original electrodes; after the batch is finished, specially ground correction electrodes are used to perform a second correction process on the bottom of the grooves of all workpieces. While this processing mode can improve the right-angle accuracy of the grooves to some extent, it has significant limitations: firstly, the two processing steps require multiple clamping and positioning operations, which not only increases the complexity of the operation steps but also makes it easier for the correction accuracy to decrease due to repeated positioning errors; secondly, the intermittent production process of batch processing and batch correction extends the production cycle of a single product and reduces equipment utilization, especially under the production needs of small batches and multiple varieties, where the efficiency shortcomings of this mode are more prominent. As the manufacturing industry continues to demand higher processing precision and production efficiency, the traditional process of separating processing and correction is no longer suitable for the pace of modern production. There is an urgent need to develop integrated technologies that can complete processing and correction in a single setup in order to break through existing technological bottlenecks. Utility Model Content

[0003] The purpose of this invention is to provide a combined electrode for electrode processing, which can process grooves and correct grooves separately through multiple sets of electrodes, thereby improving processing efficiency.

[0004] The embodiments of this utility model are achieved through the following technical solutions: A combined electrode for electrode processing includes a base and multiple sets of electrodes; each electrode includes a base plate and a processing section; one side of the base plate is detachably connected to the base, and the processing section is disposed on the other side; a plurality of base plates are linearly distributed on the base so that the plurality of electrodes are linearly distributed.

[0005] Furthermore, it also includes a mounting base; the mounting base is detachably connected to the base; the base plate is connected to the mounting base.

[0006] Furthermore, the base is provided with positioning grooves connecting its two ends; the mounting seat is slidably embedded in the positioning grooves so that the mounting seat is installed inside the positioning grooves.

[0007] Furthermore, sealing plates are provided at both ends of the positioning groove; the sealing plates are fixed to the base by screws, so that the mounting seats are restricted inside the positioning groove by the sealing plates at both ends.

[0008] Furthermore, a wedge is provided at the bottom of the sealing plate; a slot is provided at the bottom of the positioning groove to cooperate with the wedge, so that when the sealing plate is connected to the base, the wedge is inserted into the slot; the groove wall of the slot is inclined, so that when the wedge is inserted into the slot, the groove wall of the slot pushes the wedge to move into the interior of the positioning groove.

[0009] Furthermore, the base is provided with a plurality of positioning grooves arranged in parallel; each positioning groove is provided with a mounting seat; the electrodes in the plurality of positioning grooves correspond one-to-one.

[0010] Furthermore, the mounting base is provided with a screw hole connecting its two sides; a connecting screw is provided in the screw hole; one end of the connecting screw is provided with a connecting hole for connecting the electrode, and the other end passes through the screw hole and is connected with a locking nut; a stud is provided protruding from the bottom surface of the base plate; the stud is threadedly connected to the connecting hole.

[0011] Furthermore, the bottom of the mounting base is provided with a countersunk hole; the countersunk hole is concentric with the threaded hole, so that the connecting screw and the locking nut are located inside the countersunk hole.

[0012] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects: In the electrode processing of this invention, the combined electrode first performs grooving with one set of electrodes during electrical discharge machining (EDM), and then switches to another set of electrodes for right-angle correction. This allows for convenient switching between electrodes with different functions without having to separate the machining and correction processes into two independent steps.

[0013] Both ends of the positioning groove are equipped with sealing plates to prevent the mounting base from shifting due to factors such as processing vibration, ensuring the positional accuracy of the electrode during processing, thereby improving the processing quality of the workpiece and the stability of equipment operation. This design also eliminates the need to fix several mounting bases individually; only the sealing plates at both ends need to be fixed, making operation simpler.

[0014] By utilizing the inclined surface fit structure of the wedge and the slot, the installation process of the sealing plate is transformed into a pressing process of the mounting base. When the sealing plate is fixed, the wedge generates an inward component force under the action of the inclined surface of the slot, causing the mounting bases to press against each other, eliminating the gap between the mounting bases, effectively reducing vibration and displacement during processing, significantly improving the stability and processing accuracy of electrode installation, and ensuring high quality and consistency of workpiece processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the combined electrode of this utility model.

[0016] Figure 2 A schematic diagram showing the removal of the sealing plate from the combined electrode.

[0017] Figure 3 for Figure 2 Enlarged view of point a in the middle.

[0018] Figure 4 This is a schematic diagram of the mounting base being installed in the positioning groove via a sealing plate.

[0019] Figure 5 for Figure 4 Enlarged view of point b in the middle.

[0020] Figure 6 This is a schematic diagram showing the connection between the electrode and the mounting base.

[0021] Reference numerals: 1-base, 2-base plate, 3-processing part, 4-mounting seat, 5-positioning groove, 6-sealing plate, 7-wedge block, 8-slot, 9-connecting screw, 10-locking nut, 11-stud, 12-countersunk hole, 13-slide groove. Detailed Implementation

[0022] like Figures 1-6As shown, this embodiment provides a combined electrode for electrode processing, mainly including a base 1 and multiple sets of electrodes. Each set of electrodes consists of a base plate 2 and a processing section 3. Each set of electrodes has at least two electrodes, each corresponding to a processing point on the workpiece, thereby processing multiple grooves at once. The electrode is actually a copper plate, with the excess removed so that the remaining part has the same shape and size as the groove to be processed. The remaining part is the processing section 3, used to process the workpiece and form a groove of the same shape on the workpiece surface. Generally, the processing section 3 processes 1-2 cm at a time, and is used again after being consumed. Therefore, in addition to the processing section 3, the electrode also has an unprocessed copper plate, which is located at the bottom of the processing section 3, namely the base plate 2. One side of the base plate 2 is detachably connected to the base 1. Multiple sets of base plates 2 are arranged in a straight line on the base 1, so that the multiple sets of electrodes are also distributed in a straight line. In the actual processing, one electrode can be designated for grooving the workpiece, while another electrode is specifically used to correct the bottom of the groove to a right angle. With this design, during the EDM process, the EDM machine first uses one set of electrodes to create grooves, then moves and switches to another set of electrodes for right-angle correction. This allows for convenient switching between electrodes with different functions, eliminating the need to separate machining and correction into two independent processes. Generally, the EDM machine itself can handle the translation and lifting of the cutting head, enabling electrode switching without the need for external equipment.

[0023] This design effectively overcomes the drawbacks of traditional processing methods that require multiple clamping operations, greatly reduces the complexity of operation steps, avoids repeated positioning errors, significantly improves processing efficiency and workpiece forming accuracy, and meets the needs of modern manufacturing for efficient and high-precision processing. In this embodiment, the combined electrode is further provided with a mounting base 4. The mounting base 4 is also detachably connected to the base 1, and the electrode's base plate 2 is connected to the mounting base 4. Currently, traditional electrode manufacturing typically involves removing excess material from a large copper plate to form a processing section 3. To improve processing efficiency, multiple processing sections 3 are sometimes used to process the workpiece simultaneously. However, these multiple processing sections 3 are often processed on the same copper plate, and then the base plate 2 is fixed to the base 1 as a whole. This results in a large amount of blank space between the processing sections 3, leading to a large amount of copper material consumption. In this embodiment, the electrode is fixed to the base 1 via the mounting base 4, eliminating the need for the base plate 2 to be fitted with the base 1 for mounting points. Therefore, the size of the base plate 2 does not need to be adapted to the base 1. Figure 1 and Figure 2 As shown, this setup can effectively reduce the size of the base plate 2, reduce the amount of copper used, and achieve the goal of reducing costs. In this embodiment, a positioning groove 5 extending through both ends is provided on the base 1, and the mounting seat 4 is slidably embedded inside the positioning groove 5. Sliding grooves 13 are provided on both sides of the positioning groove 5, and sliders are provided on both sides of the mounting seat 4 to cooperate with the sliding grooves 13, thus confining the mounting seat 4 within the positioning groove 5. Through this structural design, the mounting seat 4 can be securely installed within the positioning groove 5. In actual use, when it is necessary to replace the electrode, the operator can easily slide the mounting seat 4 out within the positioning groove 5 and replace it with a new mounting seat 4 and electrode. The operation process is simple and convenient. This significantly shortens the electrode replacement time, improves the maintainability of the equipment and the continuity of processing, further enhances the overall processing efficiency, and meets the actual needs for rapid electrode replacement in the production process. In this embodiment, sealing plates 6 are provided at both ends of the positioning groove 5, and the sealing plates 6 are fixed to the base 1 by screws, such as... Figure 1 As shown. In this way, multiple sets of mounting seats 4 are confined inside the positioning grooves 5 by the sealing plates 6 at both ends, effectively preventing the mounting seats 4 from sliding out of the positioning grooves 5 during processing and ensuring the stability of the combined electrode structure. The fixed connection between the sealing plates 6 and the base 1 forms a physical barrier at both ends of the positioning grooves 5. Combined with the limiting effect of the positioning grooves 5 on the mounting seats 4, a closed and stable installation space is constructed. This structural design provides reliable positioning and fixation for the mounting seats 4, preventing displacement due to factors such as processing vibration, ensuring the positional accuracy of the electrodes during processing, thereby improving the processing quality of the workpiece and the stability of equipment operation. This setting also eliminates the need to fix each mounting seat 4 individually; only the sealing plates 6 at both ends need to be fixed, making operation simpler.

[0024] In this embodiment, a wedge 7 is provided at the bottom end of the sealing plate 6, and a slot 8 is provided at the bottom of the positioning groove 5 to cooperate with the wedge 7. Figures 2-5 As shown, when the sealing plate 6 is connected to the base 1, the wedge 7 can be accurately inserted into the slot 8. Furthermore, the slot wall of the slot 8 is inclined; when the wedge 7 is inserted into the slot 8, the slot wall exerts a pushing force on the wedge 7, causing it to move into the positioning groove 5, thereby pressing the mounting seats 4 within the positioning groove 5 towards the center. Utilizing the inclined mating structure between the wedge 7 and the slot 8, the installation process of the sealing plate 6 is transformed into a pressing process of the mounting seats 4. When the sealing plate 6 is fixed, the wedge 7 generates an inward component force under the action of the inclined surface of the slot 8, causing the mounting seats 4 to press against each other, eliminating gaps between the mounting seats 4, effectively reducing vibration and displacement during processing, significantly improving the stability and processing accuracy of the electrode installation, and ensuring high quality and consistency of workpiece processing. In this embodiment, multiple sets of positioning slots 5 are arranged in parallel on the base 1, and each positioning slot 5 is equipped with a mounting base 4, with the electrodes in the multiple sets of positioning slots 5 corresponding one-to-one. In actual processing scenarios, multiple processing units 3 of multiple sets of electrodes can process the workpiece simultaneously, completing the processing operation of multiple slots at once, which greatly improves processing efficiency. By increasing the number of positioning slots 5 and corresponding electrodes, the multi-axis linkage function of the EDM equipment is fully utilized to achieve synchronous operation of multiple processing units 3. This parallel processing mode effectively improves the utilization rate of the equipment, shortens the production cycle of a single product, and is especially suitable for mass production needs. It can significantly improve production efficiency while ensuring processing accuracy, meeting the requirements of large-scale production in modern manufacturing. In this embodiment, the mounting base 4 has threaded holes extending through both sides, and a connecting screw 9 is fitted into the threaded holes. Figure 6 As shown, one end of the connecting screw 9 has a connecting hole for connecting the electrode, and the other end passes through the screw hole and is connected to a locking nut 10. Meanwhile, a stud 11 protrudes from the bottom surface of the electrode base plate 2, and the stud 11 is threadedly connected to the connecting hole of the connecting screw 9. In actual operation, only a small-sized stud 11 needs to be machined on the bottom of the base plate 2 to achieve a stable connection with the connecting screw 9. Furthermore, by rotating the connecting screw 9, the angle of the machining part 3 can be flexibly adjusted. After the angle is adjusted to a suitable position, the locking nut 10 is used to lock the connecting screw 9 and the mounting base 4 in place.

[0025] The adjustable and secure nature of the threaded connection allows for flexible adjustment and reliable fixation of the electrode angle. The connecting screw 9 serves as an intermediate connector, with one end threaded to the electrode base plate 2 and the other end connected to the mounting base 4 via a locking nut 10, forming an adjustable connection structure. Specifically, when the locking nut 10 is tightened and fitted against the base 1, it pulls the connecting screw 9 outwards, causing the threads of the connecting screw 9 to tightly engage with the threads of the threaded hole, generating strong friction. This prevents the connecting screw 9 from rotating during use and causing changes in the angle of the machining section 3. This design allows the machining section 3 to adjust its angle according to different processing requirements, increasing the applicability and flexibility of the combined electrode, meeting diverse processing requirements, and improving the equipment's ability to process complex workpieces. In this embodiment, a countersunk hole 12 concentric with the screw hole is provided at the bottom of the mounting base 4, and both the connecting screw 9 and the locking nut 10 are located inside the countersunk hole 12. By providing a countersunk hole 12 at the bottom of the mounting base 4, storage space is provided for the connecting screw 9 and the locking nut 10, thus optimizing the structural layout of the mounting base 4. The countersunk hole 12 ensures that components such as the connecting screw 9 do not protrude beyond the bottom plane of the mounting base 4, eliminating the risk of interference with the bottom of the positioning groove 5, ensuring the normal sliding and positioning of the mounting base 4 within the positioning groove 5, guaranteeing the compactness of the combined electrode structure and the reliability of its operation, and providing a guarantee for the stable processing of the electrode.

Claims

1. A composite electrode for electrode processing, characterized in that: It includes a base and multiple sets of electrodes; each electrode includes a base plate and a processing section; one side of the base plate is detachably connected to the base, and the processing section is provided on the other side; several base plates are arranged in a straight line on the base so that several electrodes are arranged in a straight line.

2. The combined electrode fabricated according to claim 1, characterized in that: It also includes a mounting base; the mounting base is detachably connected to the base; the base plate is connected to the mounting base.

3. The combined electrode fabricated according to claim 2, characterized in that: The base is provided with positioning grooves connecting its two ends; the mounting seat is slidably embedded in the positioning groove so that the mounting seat is installed inside the positioning groove.

4. The combined electrode fabricated according to claim 3, characterized in that: Both ends of the positioning groove are provided with sealing plates; the sealing plates are fixed to the base by screws so that the mounting seats are restricted inside the positioning groove by the sealing plates at both ends.

5. The combined electrode fabricated according to claim 4, characterized in that: The sealing plate has a wedge at its bottom end; the bottom of the positioning groove has a slot that matches the wedge, so that when the sealing plate is connected to the base, the wedge is inserted into the slot; the wall of the slot is inclined, so that when the wedge is inserted into the slot, the wall of the slot pushes the wedge into the interior of the positioning groove.

6. The combined electrode fabricated according to claim 5, characterized in that: The base has several positioning slots arranged in parallel; each positioning slot contains a mounting base; the electrodes in the positioning slots correspond one-to-one.

7. The combined electrode fabricated according to claim 6, characterized in that: The mounting base is provided with threaded holes connecting its two sides; a connecting screw is provided in the threaded holes; one end of the connecting screw is provided with a connecting hole for connecting the electrode, and the other end passes through the threaded hole and is connected with a locking nut; a stud is provided protruding from the bottom surface of the base plate; the stud is threaded to the connecting hole.

8. The combined electrode fabricated according to claim 7, characterized in that: The bottom of the mounting base is provided with a countersunk hole; the countersunk hole is concentric with the threaded hole so that the connecting screw and the locking nut are located inside the countersunk hole.

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