A contact force self-adaptive control electric discharge deposition device

Abstract

The application provides a discharge deposition device with self-adaptive contact force control and relates to the technical field of machining equipment. The discharge deposition device with self-adaptive contact force control comprises a base, a gas cylinder and a power supply box. The upper end surfaces of the base are fixedly connected with support seats on both sides. The upper end surface of one support seat is fixedly connected with a Y-axis sliding table. The sliding table of the Y-axis sliding table is fixedly connected with an X-axis sliding table above. The front end surface of the X-axis sliding table is fixedly connected with a Z-axis sliding table. The front end surface of the sliding table of the Z-axis sliding table is fixedly connected with a connecting plate. The front end surface of the connecting plate is fixedly connected with a force control push rod. The lower end of the force control push rod is fixedly connected with an L-shaped connecting plate. The front end surface of the L-shaped connecting plate is detachably connected with a deposition gun clamp. In the application, the self-adaptive control of the contact force between the electrode and the workpiece is realized, the flexibility is high, the deposition angle can be adjusted, and the good deposition quality and good consistency can be ensured.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, specifically to a discharge deposition device with contact force adaptive control. Background Technology

[0002] The contact force between the electrode and the workpiece is one of the important process parameters affecting the quality of electrical discharge deposition (EDD). When the contact force is too low, the presence of uneven peaks between the electrode and the substrate results in a small contact area, a high short-circuit current density, and a tendency for spatter to erupt. Combined with large electrode amplitude, this reduces deposition efficiency and increases surface roughness. Increasing the contact force leads to a more stable arc and less spatter, resulting in a higher-quality deposited layer. However, excessive contact force results in no gap between the electrode and the substrate, a low spark discharge frequency, and reduced heat input, ultimately affecting the deposition process and the quality of the deposited layer. Therefore, maintaining a constant contact force during deposition is crucial for ensuring consistent surface quality.

[0003] During electrical discharge machining (EDM), the electrode and workpiece move relative to each other. This relative movement causes vibrations between them, leading to dynamic changes in the contact force. Furthermore, as the deposition process continues, the electrode material is gradually consumed, and the contact force between the electrode and workpiece gradually decreases.

[0004] Under the combined influence of the two factors mentioned above, the quality of electrical discharge deposition (EDD) will inevitably be affected, and the consistency of deposition quality will deteriorate. To consistently achieve good deposition quality and consistency in EDD, it is necessary to ensure that the contact force remains stable throughout the deposition process. Furthermore, the deposition angle, which refers to the angle between the electrode and the workpiece during EDD, also affects the deposition quality. To ensure good deposition quality, the deposition angle also needs to be controlled. Therefore, those skilled in the art have provided an adaptive contact force control EDD apparatus to address the problems mentioned in the background section. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a discharge deposition device with adaptive contact force control. This device achieves adaptive control of the contact force between the electrode and the workpiece, offering high flexibility and allowing adjustment of the deposition angle. It ensures good deposition quality and consistency, solving the problems of unstable contact force between the electrode and the workpiece, and insufficient deposition quality and consistency in current electrical discharge deposition processes.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: A discharge deposition device with contact force adaptive control includes a base, a gas cylinder, and a power supply box. Support seats are fixedly connected to both sides of the upper end face of the base. A Y-axis slide is fixedly connected to the upper end face of one of the support seats. An X-axis slide is fixedly connected above the slide of the Y-axis slide. A Z-axis slide is fixedly connected to the front end face of the X-axis slide. A connecting plate is fixedly connected to the front end face of the Z-axis slide. A force control push rod is fixedly connected to the front end face of the connecting plate. An L-shaped connecting plate is fixedly connected to the lower end of the force control push rod. A deposition gun clamp is detachably connected to the front end face of the L-shaped connecting plate. A deposition gun is held in the inner side of the deposition gun clamp. A deposition electrode is fixedly provided at the lower end of the deposition gun. A workpiece clamp is fixedly provided on the front side of the upper end of the base, and the workpiece is clamped on the inner side of the workpiece clamp, with the workpiece located directly below the deposition electrode. Both sides of the front end face of the L-shaped connecting plate are provided with arc-shaped grooves, and the deposition gun fixture is detachably connected to the L-shaped connecting plate by bolts passing through the arc-shaped grooves.

[0009] Preferably, a Y-axis servo motor is fixedly installed at the outer end of the Y-axis slide, an X-axis servo motor is fixedly installed at the outer end of the X-axis slide, and a Z-axis servo motor is fixedly installed at the outer end of the Z-axis slide. Preferably, the force-controlled push rod is electrically connected to a push rod controller via a data line; Preferably, the gas cylinder is connected to the sedimentation gun via a gas pipe, and a pressure regulating valve is fixedly installed at the connection between the gas pipe and the gas cylinder; Preferably, the positive terminal of the power supply box is electrically connected to the deposition electrode via a wire, and the negative terminal of the power supply box is electrically connected to the workpiece via another wire. Preferably, a guide rail is fixedly connected to the upper end face of another support base, and a slider is fixedly connected to the lower end of one end of the X-axis slide, the slider being slidably connected to the guide rail; Preferably, the base is made of a perforated plate; Preferably, a method for operating a discharge deposition apparatus with adaptive contact force control includes the following steps: S1. Fix the workpiece on the workpiece fixture, install the deposition gun on the deposition gun fixture, clamp the deposition electrode on the deposition gun, rotate the deposition gun fixture along the arc groove of the L-shaped connecting plate until the required deposition angle is reached, and then fix the deposition gun fixture and the L-shaped connecting plate with bolts. The L-shaped connecting plate is connected to the force control push rod, and the force control push rod is connected to the connecting plate through bolts. S2. Control the movement of the X-axis servo motor, Y-axis servo motor and Z-axis servo motor to make the deposition gun align with the workpiece; S3. Connect the gas cylinder to the sedimentation gun through the gas tube and pressure regulating valve, adjust the pressure regulating valve, and introduce protective gas. S4. Connect the positive terminal of the power supply box to the deposition electrode of the deposition gun, and connect the negative terminal of the power supply box to the workpiece, then turn on the power. S5. By adjusting the movements of the X-axis servo motor, Y-axis servo motor, and Z-axis servo motor, the distance between the deposition electrode and the workpiece is reduced to achieve the discharge conditions and generate an electrical spark discharge. Then, through the adaptive adjustment of the force control push rod, the deposition gun is controlled to deposit the electrode material onto the surface of the workpiece. Specifically, by adjusting the movement of the axis servo motor, the deposition gun is driven to move up and down in a linear motion. When the deposition electrode comes into contact with the workpiece, the required contact force between the deposition electrode and the workpiece is set by the push rod controller of the force control push rod. Discharge occurs between the deposition electrode and the workpiece, and the deposition gun drives the deposition electrode to rotate, thus realizing electrical discharge deposition. During the deposition process, if the contact force between the deposition electrode and the workpiece exceeds the above-mentioned set value, the force control push rod will automatically retract to reduce the contact force to the set value. If the contact force between the deposition electrode and the workpiece is lower than the above-mentioned set value, the force control push rod will automatically push to increase the contact force to the set value. The force control push rod continuously moves up and down to achieve adaptive control of the contact force, making the contact force tend to stabilize, thereby obtaining better deposition quality. The X-axis servo motor moves the deposition gun left and right, and the Y-axis servo motor moves the deposition gun back and forth, thereby achieving electrical discharge deposition on the workpiece surface. S6. After processing is completed, adjust the Z-axis servo motor to move the Z-axis slide upward, so that the deposition gun is away from the workpiece, and then turn off the power.

[0010] (III) Beneficial Effects

[0011] This invention provides a discharge deposition apparatus with contact force adaptive control. It has the following advantages: This invention provides a discharge deposition apparatus with adaptive contact force control. A force-controlled push rod ensures that the contact force between the electrode and the workpiece remains stable. The force-controlled push rod has a constant force control function, stably maintaining the set contact force. A push rod controller connected to the force-controlled push rod sets the required contact force between the workpiece and the electrode. When the contact force changes, the force-controlled push rod automatically pushes or retracts to increase or decrease the contact force, thus maintaining the set contact force stable. This achieves adaptive control of the contact force between the electrode and the workpiece, ensuring good deposition quality and consistency.

[0012] This invention provides a contact force adaptive control discharge deposition device. By setting X-axis, Y-axis, and Z-axis slides, the deposition gun and deposition electrode can perform three-dimensional movement in three-axis directions, enabling multi-directional deposition work. It has good flexibility and a wide range of applications. At the same time, the L-shaped plate has an arc groove. By simply loosening the bolts and rotating the deposition gun fixture along the direction of the arc groove machined on the L-shaped connecting plate, the deposition angle can be adjusted, further improving flexibility and ensuring good deposition quality during the electrical discharge deposition process. Attached Figure Description

[0013] Figure 1 A perspective view of the electric spark deposition apparatus for adaptive control of contact force provided by the present invention; Figure 2 A front view of the electro-spark deposition apparatus for adaptive control of contact force provided by the present invention; Figure 3 A side view of the electrospark deposition apparatus for adaptive control of contact force provided by the present invention; Figure 4 A schematic diagram of the structure of the electrospark deposition apparatus for adaptive control of contact force provided by the present invention; Figure 5 An oblique view of the L-shaped connecting plate provided by the present invention; Figure 6 This is a front view of the electro-spark deposition apparatus with adaptive control of contact force provided by the present invention after the deposition gun has been rotated by an angle.

[0014] The components are as follows: 1. Z-axis servo motor; 2. Z-axis slide; 3. Deposition gun; 4. X-axis servo motor; 5. X-axis slide; 6. L-shaped connecting plate; 7. Y-axis servo motor; 8. Y-axis slide; 9. Force control push rod; 10. Deposition gun fixture; 11. Deposition electrode; 12. Workpiece; 13. Workpiece fixture; 14. Support base; 15. Guide rail; 16. Slider; 17. Connecting plate; 18. Gas cylinder; 19. Pressure regulating valve; 20. Gas pipe; 21. Power supply box; 22. Wire; 23. Data cable; 24. Push rod controller; 25. Arc groove; 26. Base. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example:

[0016] like Figure 1-6As shown, this embodiment of the invention provides a discharge deposition device with contact force adaptive control, including a base 26, a gas cylinder 18, and a power supply box 21. Support seats 14 are fixedly connected to both sides of the upper end surface of the base 26. A Y-axis slide 8 is fixedly connected to the upper end surface of one support seat 14. An X-axis slide 5 is fixedly connected above the slide of the Y-axis slide 8. A Z-axis slide 2 is fixedly connected to the front end surface of the X-axis slide 5.

[0017] A connecting plate 17 is fixedly connected to the front end face of the Z-axis slide 2. A force control push rod 9 is fixedly connected to the front end face of the connecting plate 17. An L-shaped connecting plate 6 is fixedly connected to the lower end of the force control push rod 9. A deposition gun clamp 10 is detachably connected to the front end face of the L-shaped connecting plate 6. A deposition gun 3 is clamped on the inner side of the deposition gun clamp 10. A deposition electrode 11 is fixedly installed at the lower end of the deposition gun 3.

[0018] A workpiece clamp 13 is fixedly installed on the front side of the upper end of the base 26. The workpiece 12 is clamped on the inner side of the workpiece clamp 13. The workpiece 12 is located directly below the deposition electrode 11. The workpiece clamp 13 can clamp the workpiece 12 and fix it in place.

[0019] The front face of the L-shaped connecting plate 6 has arc-shaped slots 25 on both sides. The deposition gun clamp 10 is detachably connected to the L-shaped connecting plate 6 by bolts passing through the arc-shaped slots 25. According to the processed slots, the L-shaped connecting plate 6 and the deposition gun clamp 10 are fixed by bolts. When the deposition angle needs to be adjusted, simply loosen the bolts and rotate the deposition gun clamp 10 in the direction of the arc-shaped slots 25 processed on the L-shaped connecting plate 6.

[0020] A Y-axis servo motor 7 is fixedly installed at the outer end of the Y-axis slide 8, an X-axis servo motor 4 is fixedly installed at the outer end of the X-axis slide 5, and a Z-axis servo motor 1 is fixedly installed at the outer end of the Z-axis slide 2. The Z-axis servo motor 1 drives the Z-axis slide 2, which in turn moves the power control push rod 9 and the deposition gun 3 up and down. X-axis servo motor 4 drives X-axis slide 5, which in turn moves Z-axis slide 2 and Z-axis servo motor 1, thereby enabling the deposition gun 3 to move left and right. Y-axis servo motor 7 drives Y-axis slide 8, and uses guide rail 15 and slider 16 to drive X-axis servo motor 4 and X-axis slide 5 to move, thereby realizing the forward and backward movement of deposition gun 3.

[0021] The force-controlled push rod 9 is electrically connected to the push rod controller 24 via the data cable 23. The push rod controller 24 connected to the force-controlled push rod 9 sets the contact force between the workpiece 12 and the deposition electrode 11 required for the experiment. When the contact force changes, the force-controlled push rod 9 will automatically push or retract in time to increase or decrease the contact force, thereby maintaining the set contact force stable and unchanged, thus realizing adaptive control of the contact force between the deposition electrode 11 and the workpiece 12. Specifically, when the contact force between the deposition electrode 11 and the workpiece 12 is too large, the force control push rod 9 automatically retracts to reduce the contact force to the set value; when the contact force between the deposition electrode 11 and the workpiece 12 is too small, the force control push rod 9 automatically pushes to increase the contact force to the set value.

[0022] Gas cylinder 18 is connected to deposition gun 3 via gas pipe 20. A pressure regulating valve 19 is fixedly installed at the connection between gas pipe 20 and gas cylinder 18. The pressure regulating valve 19 is used to control the flow rate of protective gas, which can be nitrogen or argon.

[0023] The positive terminal of the power supply box 21 is electrically connected to the deposition electrode 11 via a wire 22, and the negative terminal of the power supply box 21 is electrically connected to the workpiece 12 via another wire 22.

[0024] Another support base 14 has a guide rail 15 fixedly connected to its upper end surface, and a slider 16 is fixedly connected to the lower end of one end of the X-axis slide table 5. The slider 16 is slidably connected to the guide rail 15. By setting the slider 16 and the guide rail 15, the X-axis slide table 5 can move stably and smoothly.

[0025] The base 26 is made of a perforated plate with many mounting holes, which makes it easy to adjust the installation position of each component.

[0026] A method for operating a discharge deposition apparatus with adaptive contact force control includes the following steps: S1. Fix the workpiece 12 on the workpiece fixture 13, install the deposition gun 3 on the deposition gun fixture 10, clamp the deposition electrode 11 on the deposition gun 3, rotate the deposition gun fixture 10 along the arc groove 25 of the L-shaped connecting plate 6 until the required deposition angle is reached, and then fix the deposition gun fixture 10 and the L-shaped connecting plate 6 with bolts. The L-shaped connecting plate 6 is connected to the force control push rod 9, and the force control push rod 9 is connected to the connecting plate 17 by bolts. S2. Control the movement of X-axis servo motor 4, Y-axis servo motor 7 and Z-axis servo motor 1 so that the deposition gun 3 is aligned with the workpiece 12. S3. Connect the gas cylinder 18 to the deposition gun 3 through the gas pipe 20 and the pressure regulating valve 19, and adjust the pressure regulating valve 19 to introduce protective gas. S4. Connect the positive terminal of the power supply box 21 to the deposition electrode 11 of the deposition gun 3, connect the negative terminal of the power supply box 21 to the workpiece 12, and then turn on the power. S5. By adjusting the movement of the X-axis servo motor 4, Y-axis servo motor 7, and Z-axis servo motor 1, the distance between the deposition electrode 11 and the workpiece 12 is reduced to achieve the discharge conditions and generate an electric spark discharge. Then, through the adaptive adjustment of the force control push rod 9, the deposition gun 3 is controlled to deposit the electrode material on the surface of the workpiece 12. Specifically, by adjusting the movement of the Z-axis servo motor 1, the deposition gun 3 is driven to move up and down in a linear motion. When the deposition electrode 11 comes into contact with the workpiece 12, the required contact force between the deposition electrode 11 and the workpiece 12 is set by the push rod controller 24 of the force control push rod 9. The deposition electrode 11 and the workpiece 12 discharge, and the deposition gun 3 drives the deposition electrode 11 to rotate, thereby realizing electrical spark deposition. During the deposition process, if the contact force between the deposition electrode 11 and the workpiece 12 exceeds the above-mentioned set value, the force control push rod 9 will automatically retract to reduce the contact force to the set value. If the contact force between the deposition electrode 11 and the workpiece 12 is lower than the above-mentioned set value, the force control push rod 9 will automatically push to increase the contact force to the set value. The force control push rod 9 continuously moves up and down to achieve adaptive control of the contact force, so that the contact force tends to be stable, thereby obtaining better deposition quality. The X-axis servo motor 4 drives the deposition gun 3 to move left and right, and the Y-axis servo motor 7 drives the deposition gun 3 to move back and forth, thereby achieving electrical discharge deposition on the surface of the workpiece 12. S6. After processing is completed, adjust the Z-axis servo motor 1 to make the Z-axis slide 2 move upward, so that the deposition gun 3 moves away from the workpiece 12, and turn off the power.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A discharge deposition device with contact force adaptive control, comprising a base (26), a gas cylinder (18), and a power supply box (21), characterized in that: The upper surface of the base (26) is fixedly connected to both sides of the support seat (14), and the upper surface of the support seat (14) is fixedly connected to the Y-axis slide (8). The upper surface of the Y-axis slide (8) is fixedly connected to the X-axis slide (5), and the front end surface of the X-axis slide (5) is fixedly connected to the Z-axis slide (2). The front end face of the Z-axis slide (2) is fixedly connected to a connecting plate (17), the front end face of the connecting plate (17) is fixedly connected to a force control push rod (9), the lower end of the force control push rod (9) is fixedly connected to an L-shaped connecting plate (6), the front end face of the L-shaped connecting plate (6) is detachably connected to a deposition gun clamp (10), the inner side of the deposition gun clamp (10) holds a deposition gun (3), and the lower end of the deposition gun (3) is fixedly provided with a deposition electrode (11). A workpiece clamp (13) is fixedly provided on the front side of the upper end of the base (26), and the workpiece (12) is clamped on the inner side of the workpiece clamp (13). The workpiece (12) is located directly below the deposition electrode (11). The front end face of the L-shaped connecting plate (6) is provided with arc grooves (25) on both sides. The deposition gun fixture (10) is detachably connected to the L-shaped connecting plate (6) by bolts passing through the arc grooves (25). The force control push rod (9) is electrically connected to the push rod controller (24) via the data line (23). The push rod controller (24) connected to the force control push rod (9) sets the contact force between the workpiece (12) and the deposition electrode (11) required for the experiment. When the contact force changes, the force control push rod (9) will automatically push or retract in time to increase or decrease the contact force, thereby maintaining the contact force set to remain stable and thus realizing adaptive control of the contact force between the deposition electrode (11) and the workpiece (12). Specifically, when the contact force between the deposition electrode (11) and the workpiece (12) is too large, the force control push rod (9) automatically retracts to reduce the contact force to the set value. When the contact force between the deposition electrode (11) and the workpiece (12) is too small, the force control push rod (9) automatically pushes to increase the contact force to the set value.

2. The contact force adaptive control discharge deposition apparatus according to claim 1, characterized in that: The outer end of the Y-axis slide (8) is fixedly equipped with a Y-axis servo motor (7), the outer end of the X-axis slide (5) is fixedly equipped with an X-axis servo motor (4), and the outer end of the Z-axis slide (2) is fixedly equipped with a Z-axis servo motor (1).

3. The discharge deposition apparatus with contact force adaptive control according to claim 1, characterized in that: The gas cylinder (18) is connected to the deposition gun (3) through the gas pipe (20), and a pressure regulating valve (19) is fixedly installed at the connection between the gas pipe (20) and the gas cylinder (18).

4. The discharge deposition apparatus with contact force adaptive control according to claim 1, characterized in that: The positive terminal of the power supply box (21) is electrically connected to the deposition electrode (11) via a wire (22), and the negative terminal of the power supply box (21) is electrically connected to the workpiece (12) via another wire (22).

5. The discharge deposition apparatus with contact force adaptive control according to claim 1, characterized in that: Another support base (14) is fixedly connected to a guide rail (15) on its upper end surface, and a slider (16) is fixedly connected to the lower end of one end of the X-axis slide (5), and the slider (16) is slidably connected to the guide rail (15).

6. The discharge deposition apparatus with contact force adaptive control according to claim 1, characterized in that: The base (26) is made of a perforated plate.

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