Electrode clamping device

Abstract

The utility model relates to the technical field of electric spark machining, and provides an electrode clamping device which comprises a clamping seat, an auxiliary block is clamped on the clamping seat, an electrode is adhered to the auxiliary block through an adhesive, an adhesion interface of the auxiliary block is flush with an adhesion interface of the electrode, the auxiliary block is clamped through the clamping seat, and the electrode is adhered to the auxiliary block through the adhesive. And the electrode is bonded with the auxiliary block through the adhesive, so that the waste of a traditional electrode clamping section is avoided, and the utilization rate of an electrode material is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machining technology, and more specifically, to an electrode clamping device. Background Technology

[0002] Copper electrodes are widely used in electrical discharge machining (EDM) and wire EDM processes due to their excellent conductivity and machinability. Traditional electrode clamping often employs mechanical clamping structures, fixing the electrode by a pre-reserved clamping section on the electrode body that mates with an electrode holder. However, due to continuous discharge corrosion at the electrode tip during machining, damage to the electrode end necessitates repeated removal of the damaged portion and reclamping, resulting in persistently low overall electrode utilization. Especially in large-scale precision machining scenarios, the cost of electrode material wear has become a significant factor restricting the economic viability of the machining process.

[0003] In existing technologies, the electrode clamping section length typically requires a 10-15mm allowance to ensure clamping stability. This portion of material remains in a non-working state throughout the electrode's entire lifespan, resulting in inherent waste. Although existing improvements have shortened the single clamping length by optimizing the clamping structure, they have not broken through the inherent "effective section-clamping section" separation mode of mechanical clamping. Utility Model Content

[0004] The purpose of this invention is to provide an electrode clamping device that solves the problem of electrode material waste caused by existing clamping devices.

[0005] This utility model is achieved through the following technical solution: an electrode clamping device, including a clamping seat, an auxiliary block clamping the clamping seat, an electrode being bonded to the auxiliary block by an adhesive, and the bonding interface of the auxiliary block being flush with the bonding interface of the electrode.

[0006] Furthermore, positioning grooves are respectively opened on the end face of the auxiliary block, and positioning blocks for positioning and installing electrodes are connected in the positioning grooves. The positioning blocks arranged oppositely clamp the opposite ends of the electrodes.

[0007] Furthermore, the positioning block includes a connecting part and a positioning part, and the connecting part and the positioning part form a groove that is perpendicular to the electrode. One end of the connecting part is embedded in the auxiliary block.

[0008] Furthermore, the positioning groove has a slot near the electrode end for inserting the rocker to separate the electrode and the auxiliary block.

[0009] Furthermore, the adhesive is a high-temperature resistant conductive adhesive.

[0010] Furthermore, the adhesive used is a silver-silicone composite conductive adhesive.

[0011] Furthermore, the bonding interface of the auxiliary block is the same as that of the electrode bonding interface.

[0012] Furthermore, vertical, continuous marking lines are drawn on the surfaces of the auxiliary block and the electrodes. This invention has at least the following advantages and beneficial effects:

[0013] (1) The auxiliary block is clamped by the clamping seat, and the electrode is bonded to the auxiliary block by adhesive, which avoids the waste of the traditional electrode clamping section and improves the utilization rate of electrode material.

[0014] (2) By positioning and cooperating with the positioning block on the auxiliary block, the auxiliary block and the electrode can be quickly and accurately bonded together. This is convenient to operate and can prevent the electrode from being misaligned during installation.

[0015] (3) By opening an insertion in the positioning groove, it is easy to insert the rocker plate. The lever principle is used to separate the electrode and the auxiliary block, reducing the difficulty of disassembly and operation time, avoiding damage to the auxiliary block or electrode by violent disassembly, and improving the reusability and maintenance efficiency of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an electrode clamping device provided by this utility model.

[0017] Figure 2 This is a front view of an electrode clamping device provided by the present invention.

[0018] Figure 3 A side sectional view of an electrode clamping device provided by this utility model.

[0019] Figure 4 This utility model Figure 3 A magnified view of a portion of point A in the middle.

[0020] Figure 5 This is a schematic diagram of the positioning block in an electrode clamping device provided by this utility model.

[0021] Reference numerals: 1-clamping base, 2-auxiliary block, 20-positioning groove, 200-slot, 3-electrode, 4-positioning block, 40-slot, 41-connecting part, 42-positioning part. Detailed Implementation

[0022] The specific implementation method is described below with reference to the accompanying drawings.

[0023] Example

[0024] like Figures 1 to 5As shown, this embodiment mainly discloses an electrode clamping device, including a clamping base 1. An auxiliary block 2 is clamped in the clamping base 1, and an electrode 3 is bonded to the auxiliary block 2 with an adhesive. The bonding interface of the auxiliary block 2 is flush with the bonding interface of the electrode 3. Specifically, the clamping base 1 can be an electrode clamping base from the prior art. The auxiliary block 2 is placed in the slot of the electrode clamping base and secured by a bolt on one side of the electrode clamping base. The auxiliary block 2 mediates the indirect bonding between the electrode 3 and the clamping base 1, avoiding the waste of the traditional electrode 3 clamping section and improving the utilization rate of the electrode 3 material. The strictly flush bonding interfaces of the auxiliary block 2 and the electrode 3 ensure stable force transmission, reduce contact resistance and electric field distortion during discharge, and improve processing accuracy and stability.

[0025] Furthermore, in specific implementation, such as Figures 3 to 5 As shown, the auxiliary block 2 provided in this embodiment of the invention has positioning grooves 20 on its end faces. Positioning blocks 4 for positioning and installing the electrode 3 are connected within the positioning grooves 20, and the opposing positioning blocks 4 enclose the opposite ends of the electrode 3. Specifically, the positioning grooves 20 can be formed on the wide plates at both ends of the auxiliary block 2, where the detachable positioning blocks 4 constrain the freedom of the electrode 3 in the width direction, while the narrow plates can be positioned by edge alignment; alternatively, they can be formed on both the wide and narrow plates respectively. This design facilitates operation, prevents electrode 3 from shifting during installation, and enables rapid and accurate bonding of the auxiliary block 2 and the electrode 3. It should be noted that the positioning blocks 4 are smoothly removed during the bonding process between the auxiliary block 2 and the electrode 3, or knocked off when the electrode 3 is cut close to the height of the positioning block 4.

[0026] Furthermore, in specific implementation, such as Figure 5 As shown, the positioning block 4 provided in this embodiment of the present invention includes a connecting part 41 and a positioning part 42. A groove 40 is formed between the connecting part 41 and the positioning part 42, which is perpendicular to the electrode 3. One end of the connecting part 41 is embedded in the auxiliary block 2. Specifically, the right-angle groove 40 structure formed by the connecting part 41 and the positioning part 42 contacts the two right-angled edges at the top of the electrode 3 to achieve positioning. The distance between the inner sides of the two connecting parts 41 is equal to the width of the electrode 3, precisely engaging the electrode 3.

[0027] Furthermore, in specific implementation, such as Figure 4 As shown, in this embodiment of the invention, the positioning groove 20 near the electrode 3 has a slot 200 for inserting a rocker arm to separate the electrode 3 and the auxiliary block 2. Specifically, when it is necessary to separate the electrode 3 and the auxiliary block 2, the rocker arm is inserted into the slot 200, and the electrode 3 and the auxiliary block 2 are separated by lever principle, reducing the difficulty of disassembly and operation time, avoiding damage to the auxiliary block 2 or the electrode 3 by violent disassembly, and improving the reusability and maintenance efficiency of the device.

[0028] Furthermore, in specific implementations, the adhesive provided in this embodiment of the present invention is a high-temperature resistant conductive adhesive. Preferably, the adhesive is a silver-silicone composite conductive adhesive. Examples include existing products such as Aremco 571-20 and Dow Corning PI-2002. By using a suitable mixing ratio, the adhesive is ensured to have good bonding effect and, while possessing conductivity, maintain stable bonding effect under high-temperature conditions, ensuring the stability of the connection between the auxiliary block 2 and the electrode 3. It should be noted that the gap between the auxiliary block 2 and the electrode 3 is small (approximately 1 mm), and the adhesive selected is a silver-silicone composite conductive adhesive (volume resistivity ≤ 5 × 10⁻⁶). -4 Its resistivity is approximately 1 / 3000 that of copper (Ω·cm), resulting in a low resistance value. Simultaneously, the adhesive ensures complete coverage of the gaps, eliminating any potential breakage gaps. This ensures that the EDM energy is precisely applied to the electrode 3-workpiece gap, rather than the auxiliary block-electrode 3 bonding interface, avoiding bonding failure caused by unintended discharge.

[0029] Furthermore, in specific implementations, the bonding interface of the auxiliary block 2 provided in this embodiment is the same as the bonding interface of the electrode 3. This avoids weak bonding points caused by interface differences and improves the overall structural reliability.

[0030] Furthermore, in specific implementation, vertically continuous marking lines are drawn on the surfaces of the auxiliary block 2 and electrode 3 provided in this embodiment of the present invention. Specifically, the marking lines are divided into two segments, which are marked on the surfaces of the auxiliary block 2 and electrode 3 respectively. The operator can quickly determine whether the auxiliary block 2 and electrode 3 are positioned and installed in place by checking whether the two segments of the marking lines are aligned, thus ensuring the consistency of the clamping direction.

Claims

1. An electrode clamping device, comprising a clamping base (1), characterized in that, The clamping seat (1) is fitted with an auxiliary block (2), and the auxiliary block (2) is bonded to an electrode (3) by an adhesive. The bonding interface of the auxiliary block (2) is flush with the bonding interface of the electrode (3).

2. The electrode clamping device according to claim 1, characterized in that, The auxiliary block (2) has a positioning groove (20) on its end face. The positioning groove (20) is connected to a positioning block (4) for positioning and installing the electrode (3). The positioning blocks (4) arranged opposite to each other clamp the opposite ends of the electrode (3).

3. The electrode clamping device according to claim 2, characterized in that, The positioning block (4) includes a connecting part (41) and a positioning part (42). The connecting part (41) and the positioning part (42) form a slot (40) that is perpendicular to the electrode (3). One end of the connecting part (41) is embedded in the auxiliary block (2).

4. The electrode clamping device according to claim 2, characterized in that, The positioning groove (20) has a slot (200) at one end near the electrode (3) for inserting a rocker to separate the electrode (3) from the auxiliary block (2).

5. The electrode clamping device according to claim 1, characterized in that, The adhesive is a high-temperature resistant conductive adhesive.

6. The electrode clamping device according to claim 4, characterized in that, The adhesive used is a silver-silicone composite conductive adhesive.

7. The electrode clamping device according to claim 1, characterized in that, The bonding interface of the auxiliary block (2) is the same as that of the electrode (3).

8. The electrode clamping device according to claim 1, characterized in that, The auxiliary block (2) and the electrode (3) are marked with vertical continuous marking lines.

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