An electric spark drilling device for drilling a diamond pressure cavity gasket

Abstract

This invention discloses an electrical discharge drilling device for drilling holes in diamond cavity gaskets, relating to the field of drilling equipment technology. It includes a base, a mounting platform, an electrolytic cell, and an electrical discharge generator. A sliding table is mounted on the base, the mounting platform is mounted on the sliding table, the electrolytic cell is detachably mounted on the mounting platform, and the electrical discharge generator is positioned above the electrolytic cell. A clamping and fixing mechanism is provided inside the electrolytic cell to fix the diamond cavity gasket. This invention provides an automated electrical discharge drilling device, upgrading the original manual drilling machine to an automatic one. The device has a suitable structure, is easy to operate, and has controllable costs, effectively improving processing accuracy and efficiency, and meeting the stringent requirements of high-temperature and high-pressure experiments in diamond cavity drilling for micro-hole processing of gaskets.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and in particular to an electrical discharge drilling device for drilling diamond pressure chamber gaskets. Background Technology

[0002] Drilling the gasket is essential for conducting high-temperature and high-pressure experiments in diamond chambers. As the core sealing component of the diamond chamber, the quality of the machining of the central micro-hole of the gasket directly determines the sealing performance and success rate of the high-temperature and high-pressure experiment. Deviations in hole position or rough hole walls can easily lead to pressure leakage during the experiment, significantly reducing the success rate. Because the diamond chamber must withstand extremely high pressure during operation, the gasket must be made of a metal material with extremely high hardness. Conventional mechanical drilling methods cannot overcome the material hardness limitations; therefore, only laser or EDM drilling machines can be used for drilling.

[0003] Currently, the commonly used drilling methods in the industry are mainly divided into two types: laser drilling and electrical discharge drilling. Among them, the outstanding advantage of using high-power lasers for drilling is the high drilling speed, but it has obvious drawbacks: the laser drilling process produces eroded edges, resulting in very uneven hole walls, which cannot meet the stringent requirements of diamond pressure cavity gaskets for the smoothness of micropores; at the same time, laser drilling equipment poses significant safety hazards, and the equipment is extremely expensive, greatly increasing the cost of experimentation and production, which is not conducive to its widespread use.

[0004] Compared to laser drilling, EDM drilling machines offer significant advantages such as lower cost, simpler structure, easier operation, and higher drilling quality, making them more suitable for processing diamond pressure chamber gaskets. However, existing EDM drilling equipment has significant shortcomings. Our original EDM drilling machines were operated manually, which was time-consuming, labor-intensive, and tedious, resulting in low processing efficiency. Furthermore, the precision of manual operation was difficult to control, making it impossible to consistently guarantee the positional accuracy and wall quality of holes with diameters of 0.1–0.3 mm, thus failing to meet the needs of batch processing and high-precision machining.

[0005] Based on this, in order to solve the drawbacks of manual EDM drilling machines and avoid the cost, safety, and processing quality defects of laser drilling machines, and considering the high hardness and high precision processing requirements of diamond pressure cavity gaskets, this invention proposes an automated EDM drilling device that upgrades the original manual drilling machine to an automatic drilling machine. This device has an adaptable structure, is easy to operate, and has controllable costs. It can effectively improve processing accuracy and efficiency, and meet the stringent requirements of diamond pressure cavity high temperature and high pressure experiments for gasket micro-hole processing. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects in the prior art and to propose an electrical discharge drilling device for drilling diamond pressure cavity gaskets.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An electric spark drilling device for drilling holes in diamond pressure cavity gaskets, characterized in that it includes a base, a mounting platform, an electrolytic cell, and an electric spark generator; A sliding table is provided on the base, the mounting platform is provided on the sliding table, the electrolytic cell is detachably provided on the mounting platform, and the electric spark generator is provided above the electrolytic cell; a clamping and fixing mechanism is provided inside the electrolytic cell, and the clamping and fixing mechanism is used to fix the diamond pressure chamber gasket.

[0008] Furthermore, the base is integrally formed from cast iron, with anti-slip and shock-absorbing pads at the bottom and a horizontal mounting surface at the top. A sliding groove and a drive groove are provided on the horizontal mounting surface. An x-axis drive screw is provided in the drive groove, and the slide is threadedly connected to the x-axis drive screw. A protrusion is provided at the bottom of the slide, and the protrusion is adapted to the sliding groove.

[0009] Furthermore, the slide is a linear rolling guide, and a y-axis drive screw is provided inside the linear rolling guide. The y-axis drive screw is threadedly connected to the bottom of the mounting platform.

[0010] Furthermore, the installation platform is provided with a positioning protrusion, and the electrolytic cell is provided with a positioning groove below it, the positioning protrusion and the positioning groove being compatible.

[0011] Furthermore, the bottom of the electrolytic cell is provided with a support protrusion, which is a conical structure; the top of the support protrusion is provided with an anti-slip layer.

[0012] Furthermore, a fixing clamping mechanism is provided on the opposite two side walls of the electrolytic cell. The clamping fixing mechanism includes a clamping frame and a clamping slider. The clamping slider is slidably and sealed within a through hole in the side wall of the electrolytic cell. The clamping frame is fixedly connected to the end of the clamping slider. A spring is provided between the clamping frame and the inner wall of the electrolytic cell.

[0013] Furthermore, the clamping frame is provided with an arc-shaped groove on the side away from the clamping slider, and the arc-shaped groove is adapted to the edge of the diamond pressure cavity pad.

[0014] Furthermore, a lifting mechanism is provided on one side of the base. The lifting mechanism includes a lifting seat, a lifting screw, and a guide rod. The guide rod is located on one side of the lifting screw and is slidably connected to the lifting seat. The lifting seat is also threadedly connected to the lifting screw. The lifting screw is rotatably connected to the base and controlled by a servo motor. The electric spark generator is fixedly connected to the lifting seat.

[0015] Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the coordinated operation of the base, mounting platform, slide, detachable electrolytic cell, EDM generator, and clamping and fixing mechanism within the electrolytic cell, automated processing of diamond cavity gasket drilling is achieved. This solves the problems of time-consuming, labor-intensive, tedious, inefficient, and inaccurate traditional manual EDM drilling machines. The detachable electrolytic cell design facilitates maintenance, replacement, and cleaning, adapting to different processing scenarios. The integrated clamping and fixing mechanism within the electrolytic cell precisely fixes the gasket, preventing displacement and deformation during processing and ensuring the accuracy of micro-hole processing. The EDM generator is positioned above the electrolytic cell, enhancing drilling quality in conjunction with electrolysis. Compared to laser drilling equipment, this structure is simpler, easier to operate, and more cost-effective. It also avoids the erosion edges, safety hazards, and high costs associated with laser drilling, making it suitable for processing micro-diameter holes in high-hardness gaskets and meeting the requirements of high-temperature and high-pressure experiments in diamond cavity drilling. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the overall structure of an electrical discharge drilling device.

[0019] In the diagram: 1. Lifting base; 2. Electric spark generator; 3. Lifting screw; 4. Guide rod; 5. Metal wire electrode assembly; 6. Base; 7. Mounting platform; 8. Electrolytic cell; 9. Clamping and fixing mechanism; 10. Support protrusion. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Reference Figure 1 An electric spark drilling device for drilling diamond pressure cavity gaskets includes a base 6, a mounting platform 7, an electrolytic cell 8, and an electric spark generator 2. A slide is provided on the base 6, and the mounting platform 7 is provided on the slide. The electrolytic cell 8 is detachably mounted on the mounting platform 7, and the electric spark generator 2 is located above the electrolytic cell 8. A clamping and fixing mechanism 9 is provided inside the electrolytic cell 8, which is used to fix the diamond pressure chamber gasket.

[0023] Through the coordinated operation of the base 6, mounting platform 7, slide, detachable electrolytic cell 8, EDM generator 2, and clamping and fixing mechanism 9 within the electrolytic cell 8, automated processing of diamond cavity gasket drilling is achieved, solving the problems of time-consuming, labor-intensive, tedious, inefficient, and inaccurate traditional manual EDM drilling machines. The detachable electrolytic cell 8 is designed for easy maintenance, replacement, and cleaning, adapting to different processing scenarios. The integrated clamping and fixing mechanism 9 within the electrolytic cell 8 can precisely fix the gasket, preventing displacement and deformation during processing and ensuring the accuracy of micro-hole processing. The EDM generator 2 is correspondingly positioned above the electrolytic cell 8, which can enhance drilling quality in conjunction with electrolysis. Compared to laser drilling equipment, this structure is simple, easy to operate, and cost-controllable, while avoiding the erosion edges, safety hazards, and high costs associated with laser drilling. It is suitable for the micro-diameter processing requirements of high-hardness gaskets and meets the requirements of diamond cavity high-temperature and high-pressure experiments for gaskets.

[0024] Specifically, the pulse power supply is electrically connected to the wire electrode assembly 5 and the electrolytic cell 8. It adopts a high-frequency pulse power supply for electrical discharge micro-precision machining, which can flexibly adjust the pulse width (2~50μs), peak current (1~10A), servo voltage (15~25V) and other electrical parameters according to the material and thickness of the gasket, adapting to the processing requirements of 0.1~0.3mm micro-hole diameter. A larger pulse width is used to improve efficiency during roughing, and a smaller pulse width is used to improve surface quality during finishing. It is also equipped with short-circuit protection and electrode wear compensation functions, which can effectively reduce the wear of the wire electrode and avoid hole position deviation and hole wall roughness caused by electrode wear during processing, ensuring the roundness and smoothness of the micro-hole.

[0025] In other preferred embodiments, the base 6 is integrally formed from high-strength cast iron, with anti-slip and shock-absorbing pads at the bottom and a horizontal mounting surface at the top. A sliding groove and a drive groove are provided on the horizontal mounting surface. An x-axis drive screw is provided in the drive groove, and the slide is threadedly connected to the x-axis drive screw. A protrusion is provided at the bottom of the slide, which is adapted to the sliding groove.

[0026] The base 6 is made of high-strength cast iron in one piece, which improves the overall structural stability and load-bearing capacity of the device. The anti-slip and shock-absorbing pads at the bottom can effectively reduce vibration during the processing, avoid hole position deviation caused by vibration, and ensure the processing accuracy of small holes. The sliding groove opened on the top horizontal mounting surface is adapted to the bottom protrusion of the slide table. With the help of the x-axis drive screw in the drive groove, the slide table can move smoothly and accurately along the x-axis direction. The drive method is reliable and the positioning accuracy is high. The relative position of the shim and the EDM generator 2 can be precisely adjusted to further improve the accuracy of the drilling position. At the same time, the structural design is simple, which is convenient for assembly and maintenance and reduces the equipment failure rate.

[0027] Specifically, the slide is a linear rolling guide, and a Y-axis drive screw is installed inside the linear rolling guide. The Y-axis drive screw is threaded to the bottom of the mounting platform 7.

[0028] The slide table is designed as a linear rolling guide, serving both guiding and supporting functions. This results in low motion resistance and high precision, effectively improving the smoothness of slide table movement and repeatability. The Y-axis drive screw inside the linear rolling guide is threaded to the mounting platform 7, and together with the X-axis drive screw, it enables precise adjustment of the electrolytic cell along the X and Y axes. This allows for flexible adjustment of the drilling position, adapting to different specifications of gaskets and different drilling requirements. This solves the problem of inconvenient positioning and adjustment in the original equipment, further improving processing accuracy and adaptability. At the same time, the structural design of the linear rolling guide extends the service life of the equipment and reduces maintenance costs.

[0029] In other preferred embodiments, the mounting platform 7 is provided with a positioning protrusion, and the electrolytic cell 8 is provided with a positioning groove below it, with the positioning protrusion and the positioning groove being compatible. By providing a positioning protrusion on the mounting platform 7 and a positioning groove below the electrolytic cell 8, rapid positioning and assembly of the electrolytic cell 8 and the mounting platform 7 can be achieved, ensuring accurate installation of the electrolytic cell 8 and avoiding misalignment of the EDM generator 2 and the gasket drilling position caused by the electrolytic cell 8 shifting, thus ensuring processing accuracy.

[0030] In other preferred embodiments, a support protrusion 10 with a conical structure is provided at the bottom of the electrolytic cell 8; an anti-slip layer is provided at the top of the support protrusion 10. The conical structure of the support protrusion 10 at the bottom can provide precise support for the gasket; the anti-slip layer at the top of the support protrusion 10 can increase the friction between it and the gasket, further preventing sliding displacement during the gasket processing, and at the same time avoiding scratching the surface of the gasket by the support protrusion 10.

[0031] In other preferred embodiments, a fixing clamping mechanism is provided on the opposite side walls of the electrolytic cell 8. The clamping and fixing mechanism 9 includes a clamping frame and a clamping slider. The clamping slider is slidably and sealed in the through hole of the side wall of the electrolytic cell 8. The clamping frame is fixedly connected to the end of the clamping slider. A spring is provided between the clamping frame and the inner wall of the electrolytic cell 8.

[0032] By using a sealed sliding connection between the clamping slider and the through holes on the side wall of the electrolytic cell, combined with the elasticity of the spring, flexible clamping of gaskets of different sizes can be achieved. This ensures that the gaskets are firmly fixed while avoiding deformation caused by excessive clamping force. The design of the clamping frame and the spring can automatically adapt to the gasket size, eliminating the need for precise manual adjustment, simplifying the operation process and improving positioning efficiency. The sealed sliding connection structure can prevent electrolyte leakage from the through holes, ensuring the normal progress of the electrolytic reaction.

[0033] Specifically, an arc-shaped groove is provided on the side of the clamping frame away from the clamping slider, and the arc-shaped groove is adapted to the edge of the diamond pressure cavity pad. The adaptation design of the arc-shaped groove and the edge of the pad can further improve the positioning accuracy of the pad, prevent the pad from shifting, and avoid scratching the edge of the pad during clamping.

[0034] In other preferred embodiments, a lifting mechanism is provided on one side of the base 6. The lifting mechanism includes a lifting seat 1, a lifting screw 3, and a guide rod 4. The guide rod 4 is located on one side of the lifting screw 3 and is slidably connected to the lifting seat 1. The lifting seat 1 is also threadedly connected to the lifting screw 3. The lifting screw 3 is rotatably connected to the base 6 and controlled by a servo motor. The electric discharge generator 2 is fixedly connected to the lifting seat 1. Through this structure, the electric discharge generator 2 can be precisely adjusted vertically, and the distance between the electric discharge generator 2 and the gasket processing surface can be flexibly adjusted to meet the processing requirements of gaskets of different thicknesses. At the same time, it is convenient to adjust the discharge gap to ensure the electric discharge effect and processing accuracy. The sliding connection between the guide rod 4 and the lifting seat 1 can prevent the lifting seat 1 from deviating during the lifting process and improve the lifting stability. The servo motor controls the rotation of the lifting screw 3, which has high adjustment accuracy and fast response speed, realizing automatic adjustment.

[0035] The lifting mechanism drives the electrode to reciprocate. It adopts a precision servo motor and a lifting screw 3 transmission mechanism to accurately adjust the reciprocating stroke and frequency of the metal wire electrode (adjustment range 10-50 times / second). This ensures that the metal wire electrode can stably achieve the cyclic action of "moving towards the pad - discharging - retracting". During the reciprocating motion, a stable discharge gap is maintained between the metal wire electrode and the pad. This ensures the discharge erosion effect and avoids short circuits caused by direct contact between the electrode and the pad. At the same time, it helps to remove the tiny chips generated during the processing and improves the processing stability.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An electrical discharge drilling device for drilling holes in diamond pressure cavity gaskets, characterized in that, Includes a base, mounting platform, electrolytic cell, and electric spark generator; A sliding table is provided on the base, the mounting platform is provided on the sliding table, the electrolytic cell is detachably provided on the mounting platform, and the electric spark generator is provided above the electrolytic cell; a clamping and fixing mechanism is provided inside the electrolytic cell, and the clamping and fixing mechanism is used to fix the diamond pressure chamber gasket.

2. The electrical discharge drilling device for drilling diamond pressure cavity gaskets according to claim 1, characterized in that, The base is integrally formed from cast iron, with anti-slip and shock-absorbing pads at the bottom and a horizontal mounting surface at the top. A sliding groove and a drive groove are provided on the horizontal mounting surface. An x-axis drive screw is provided in the drive groove. The slide is threadedly connected to the x-axis drive screw. A protrusion is provided at the bottom of the slide, which is adapted to the sliding groove.

3. The electrical discharge drilling device for drilling holes in diamond pressure cavity gaskets according to claim 2, characterized in that, The slide is a linear rolling guide rail, and a y-axis drive screw is provided inside the linear rolling guide rail. The y-axis drive screw is threadedly connected to the bottom of the mounting platform.

4. The electrical discharge drilling device for drilling diamond pressure cavity gaskets according to claim 1, characterized in that, The installation platform is provided with a positioning protrusion, and the electrolytic cell is provided with a positioning groove below it. The positioning protrusion and the positioning groove are adapted to each other.

5. The electrical discharge drilling device for drilling holes in diamond pressure cavity gaskets according to claim 1, characterized in that, The bottom of the electrolytic cell is provided with a support protrusion, which is a conical structure; the top of the support protrusion is provided with an anti-slip layer.

6. The electrical discharge drilling device for drilling holes in diamond pressure cavity gaskets according to claim 1, characterized in that, The electrolytic cell is provided with a fixed clamping mechanism on its two opposite side walls. The clamping mechanism includes a clamping frame and a clamping slider. The clamping slider is slidably and sealed in a through hole in the side wall of the electrolytic cell. The clamping frame is fixedly connected to the end of the clamping slider. A spring is provided between the clamping frame and the inner wall of the electrolytic cell.

7. The electrical discharge drilling device for drilling holes in diamond pressure cavity gaskets according to claim 6, characterized in that, The clamping frame has an arc-shaped groove on the side away from the clamping slider, and the arc-shaped groove is adapted to the edge of the diamond pressure cavity gasket.

8. The electrical discharge drilling device for drilling holes in diamond pressure cavity gaskets according to claim 1, characterized in that, A lifting mechanism is provided on one side of the base. The lifting mechanism includes a lifting seat, a lifting screw, and a guide rod. The guide rod is located on one side of the lifting screw and is slidably connected to the lifting seat. The lifting seat is also threadedly connected to the lifting screw. The lifting screw is rotatably connected to the base and controlled by a servo motor. The electric spark generator is fixedly connected to the lifting seat.

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