A wire electro-discharge machining apparatus
By incorporating an adjustment structure and a deionized water circulation system into the electrical discharge machining (EDM) equipment, the problem of cutting deviation caused by electrode wire vibration was solved, cutting accuracy and surface quality were improved, production costs were reduced, and product qualification rate was increased.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI TEHUI PRECISION MASCH CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-23
AI Technical Summary
During operation, existing electrical discharge machining (EDM) equipment is prone to non-perpendicularity due to electrode wire vibration, which affects cutting accuracy and surface quality. This is especially true for high-precision and complex-shaped cutting processes, resulting in lower product qualification rates and increased production costs.
By incorporating an adjustment structure in the electrical discharge cutting equipment, including a convex plate, adjusting screw, locking sleeve, rubber gasket, and compression spring, the tension of the electrode wire is adjusted, vibration is reduced, the electrode wire is kept vertical, and a deionized water circulation system is used to keep the discharge medium clean.
It significantly improves cutting accuracy and surface quality, increases product qualification rate, and reduces production costs, especially in high-precision, complex-shaped cutting processes.
Smart Images
Figure CN224390133U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of wire electrical discharge cutting equipment, specifically a stable wire electrical discharge cutting device. Background Technology
[0002] Electrical discharge machining (EDM) equipment is a device that uses a pulsed power supply to generate an electric spark discharge between an electrode wire and a workpiece. The high temperature generated by the discharge melts or vaporizes the workpiece material, thereby achieving the cutting and processing of metals or other conductive materials.
[0003] Existing electrical discharge machining (EDM) equipment is prone to loosening and non-perpendicularity due to electrode wire vibration during operation, which can lead to deviations in the cutting trajectory and affect cutting accuracy and surface quality. This is especially problematic when performing high-precision, complex-shaped cutting, resulting in lower product yield and increased production costs.
[0004] Therefore, we need to propose a stable wire EDM cutting device. Utility Model Content
[0005] The purpose of this invention is to provide a stable wire EDM cutting device that avoids the electrode wire from becoming loose or not perpendicular, thereby ensuring the accuracy of the cutting trajectory, significantly improving cutting precision and surface quality, especially in high-precision and complex shape cutting processes, which helps to improve the product qualification rate and reduce production costs, thus solving the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A wire EDM (Electrical Discharge Machining) device, comprising:
[0008] The body of the electric discharge cutting equipment has a water tank, an output head for outputting pulse current at the upper end of the body, an upper fixed seat at the bottom of the output head, a fixed plate inside the water tank, a lower fixed seat on the fixed plate, and an electrode wire between the lower fixed seat and the upper fixed seat.
[0009] It also includes an adjustment structure for adjusting the tension of the electrode wire, which is set inside the water tank. The adjustment structure includes convex plates located on the inner walls of both sides of the water tank. Adjustment screws are provided at both ends of the fixed plate. The adjustment screws can move up and down on the convex plates, thereby adjusting the gap between the upper fixed seat and the lower fixed seat to change the tension of the electrode wire.
[0010] Preferably, the end of the convex plate has a through hole for the adjustment screw to pass through.
[0011] Preferably, a locking sleeve is threaded onto the adjusting screw, and the locking sleeve is located on the top of the convex plate. The length of the adjusting screw below the convex plate is set by the locking sleeve.
[0012] Preferably, two sets of rubber washers are slidably fitted on the adjusting screw, with the washers located between the convex plate and the fixed plate.
[0013] Preferably, a compression spring is fitted on the adjusting screw between the two sets of washers. The two ends of the compression spring abut against the two sets of washers respectively. The compression spring is always in a compressed state, and the compression spring causes the locking sleeve to always abut against the top of the protrusion.
[0014] Preferably, the machine body is equipped with a supply tank for recycling deionized water. The supply tank has a built-in filtration system, and a recycling port connected to the supply tank is provided at the bottom of the water tank. The supply tank supplies deionized water to the electrode wire through a pump.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] By setting an adjustment structure, the gap between the upper and lower fixed seats can be adjusted, thereby changing the tension of the electrode wire. A suitable electrode wire tension can effectively reduce vibration during operation, preventing the electrode wire from becoming loose or non-perpendicular, thus ensuring the accuracy of the cutting trajectory and significantly improving cutting precision and surface quality. This is particularly advantageous in high-precision, complex-shaped cutting, helping to increase product yield and reduce production costs. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the water tank of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the fixing plate of this utility model.
[0020] In the diagram: 1. Body; 2. Output head; 3. Upper fixed seat; 4. Electrode wire; 5. Lower fixed seat; 6. Fixed plate; 7. Water tank; 8. Adjusting screw; 9. Protruding plate; 10. Locking sleeve; 11. Washer; 12. Compression spring. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1-3 This utility model provides a technical solution:
[0023] A wire EDM (Electrical Discharge Machining) device, comprising:
[0024] The electrical discharge machining equipment has a body 1, a water tank 7 on the body 1, an output head 2 for outputting pulse current at the upper end of the body 1, an upper fixed seat 3 at the bottom of the output head 2, a fixed plate 6 inside the water tank 7, a lower fixed seat 5 on the fixed plate 6, and an electrode wire 4 between the lower fixed seat 5 and the upper fixed seat 3; a supply tank for recycling deionized water is installed inside the body 1, the supply tank has a built-in filtration system, and a recycling port connected to the supply tank is located at the bottom of the water tank 7. The supply tank supplies deionized water to the electrode wire 4 through a pump.
[0025] The main body 1 provides structural support, the water tank 7 and the supply box form a deionized water circulation system, and the output head 2 provides pulsed current to the electrode wire 4 to achieve electric spark discharge cutting. The upper and lower fixing seats 5 fix the electrode wire 4, and the deionized water is circulated and filtered under the action of the pump to ensure the cleanliness of the discharge medium and ensure the stability of the cutting process.
[0026] Please see Figure 1-3 :
[0027] It also includes an adjustment structure for adjusting the tension of electrode wire 4, which is set in the water tank 7. The adjustment structure includes convex plates 9 located on the inner walls of both sides of the water tank 7, and adjusting screws 8 are provided at both ends of the fixing plate 6. The adjusting screws 8 can move up and down on the convex plates 9, thereby adjusting the gap between the upper fixing seat 3 and the lower fixing seat 5 to change the tension of electrode wire 4.
[0028] The adjustment structure is set inside the water tank 7. By adjusting the up-and-down movement of the adjusting screws 8 at both ends of the fixed plate 6 on the convex plate 9, the gap between the upper fixed seat 3 and the lower fixed seat 5 is changed, thereby adjusting the tension of the electrode wire 4. It can flexibly adjust the tension of the electrode wire 4 according to different processing requirements and the actual state of the electrode wire 4, effectively reducing the vibration of the electrode wire 4 during operation, and preventing the electrode wire 4 from becoming loose or in a non-perpendicular state, thus ensuring the accuracy of the cutting trajectory, improving cutting precision and surface quality, and playing an important role, especially in high-precision and complex shape cutting processing.
[0029] Specifically, the end of the convex plate 9 has a through hole for the adjusting screw 8 to pass through. A locking sleeve 10 is threaded onto the adjusting screw 8, located at the top of the convex plate 9. The locking sleeve 10 sets the length of the adjusting screw 8 below the convex plate 9. Two sets of rubber washers 11 are slidably fitted onto the adjusting screw 8, located between the convex plate 9 and the fixed plate 6. A compression spring 12 is fitted onto the adjusting screw 8 between the two sets of washers 11. The two ends of the compression spring 12 abut against the two sets of washers 11 respectively, and the compression spring 12 is always in a compressed state, causing the locking sleeve 10 to always abut against the top of the convex plate 9.
[0030] When in use, the tension can be adjusted by rotating the locking sleeve 10 and changing the distance between the upper fixed seat 3 and the lower fixed seat 5. At this time, the compression spring 12 is in a compressed state, providing a downward thrust to the fixed plate 6, which can keep the electrode wire 4 in a taut state.
[0031] Meanwhile, since the adjusting screw 8 is slidably inserted into the convex plate 9, and the adjusting screw 8 is equipped with a washer 11 and a compression spring 12, the electrode wire 4 will not be over-tensioned and break.
[0032] In addition, the combination of compression spring 12 and washer 11 can play a good buffering role when the electrode wire 4 vibrates, absorb and buffer vibration energy, reduce the transmission of vibration, and thus reduce the vibration amplitude of electrode wire 4.
[0033] On the other hand, during the up-and-down movement of the adjusting screw 8 and during equipment operation, the washer 11 plays a role in buffering and isolation; reducing direct friction and collision between the adjusting screw 8 and the convex plate 9 and the fixed plate 6, protecting equipment components, and extending the service life of the equipment; at the same time, the rubber washer 11 has a certain elasticity, which can absorb vibration to a certain extent and further stabilize the tension of the electrode wire 4.
[0034] In this embodiment, the specific implementation is as follows:
[0035] Electrode wire 4 (diameter φ0.05-0.3mm, material molybdenum wire or tungsten wire) is led out from the spool and passes through the upper fixed seat 3, the workpiece cutting area and the lower fixed seat 5 in sequence to form a closed loop; the upper fixed seat 3 is fixed to the bottom of the output head 2 and the lower fixed seat 5 is installed on the fixed plate 6 in the water tank 7 to ensure that the electrode wire 4 is perpendicular to the workpiece surface (perpendicularity deviation ≤0.01°); the output head 2 is connected to a pulse power supply (voltage 80-120V, frequency 10-50kHz) to conduct high-frequency pulse current to the electrode wire 4, and the workpiece is grounded through the fixture to form a discharge loop of "electrode wire 4-working fluid-workpiece".
[0036] The electrical discharge cutting process is as follows:
[0037] Breakdown discharge: When the distance between electrode wire 4 and the workpiece is reduced to the discharge gap (about 0.01-0.05mm), the pulse voltage breaks down the deionized water medium, generating instantaneous high temperature (≥10000℃), causing the workpiece material to melt or vaporize.
[0038] Erosion and chip removal: The explosive force generated by the discharge throws the molten material away from the workpiece, forming tiny pits; at the same time, the high-speed flowing deionized water (flow rate 5-10m / s) carries away the debris and heat, preparing for the next discharge.
[0039] Trajectory control: The equipment's CNC system (not shown) controls the movement of the workpiece platform, and the electrode wire 4 scans along a preset trajectory to gradually erode the material and achieve contour cutting.
[0040] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A wire electrical discharge machining (EDM) stabilization device, characterized in that, include: The body (1) of the electric spark cutting equipment is provided with a water tank (7), an output head (2) for outputting pulse current is provided at the upper end of the body (1), an upper fixed seat (3) is provided at the bottom of the output head (2), a fixed plate (6) is provided in the water tank (7), a lower fixed seat (5) is provided on the fixed plate (6), and an electrode wire (4) is provided between the lower fixed seat (5) and the upper fixed seat (3). It also includes an adjustment structure for adjusting the tension of the electrode wire (4), which is set in the water tank (7). The adjustment structure includes a convex plate (9) located on the inner wall of both sides of the water tank (7). Adjustment screws (8) are provided at both ends of the fixing plate (6). The adjustment screws (8) can move up and down on the convex plate (9) to adjust the gap between the upper fixing seat (3) and the lower fixing seat (5) to change the tension of the electrode wire (4).
2. The wire EDM stabilization cutting device according to claim 1, characterized in that: The end of the convex plate (9) has a through hole for the adjustment screw (8) to pass through.
3. The wire EDM stabilization cutting device according to claim 2, characterized in that: A locking sleeve (10) is threaded onto the adjusting screw (8). The locking sleeve (10) is located on the top of the convex plate (9). The length of the adjusting screw (8) below the convex plate (9) is set by the locking sleeve (10).
4. The wire EDM stabilization cutting device according to claim 3, characterized in that: Two sets of rubber washers (11) are slidably sleeved on the adjusting screw (8), and the washers (11) are located between the convex plate (9) and the fixed plate (6).
5. The wire EDM stabilization cutting device according to claim 4, characterized in that: A compression spring (12) is sleeved on the adjusting screw (8) between two sets of washers (11). The two ends of the compression spring (12) abut against the two sets of washers (11) respectively. The compression spring (12) is always in a compressed state. The compression spring (12) makes the locking sleeve (10) always abut against the top of the protrusion (9).
6. The wire EDM stabilization cutting device according to claim 1, characterized in that: The machine body (1) is equipped with a supply tank for recycling deionized water. The supply tank has a built-in filtration system. The bottom of the water tank (7) is equipped with a recycling port connected to the supply tank. The supply tank provides deionized water to the electrode wire (4) through a pump.