Efficient pore discharge machine based on ultrasonic assistance

Abstract

The invention relates to the field of pore discharge machines, and discloses an ultrasonic-assisted high-efficiency pore discharge machine, which comprises a base provided with an ultrasonic-assisted mechanism and a clamping mechanism; the ultrasonic-assisted mechanism comprises a connecting frame, a hydraulic cylinder, a push plate, a threaded barrel, an electrode tip, an ultrasonic transducer and an ultrasonic transducer output end; the connecting frame is fixedly installed at the top of the base, the hydraulic cylinder is fixedly installed at the top of the connecting frame, a hydraulic rod of the hydraulic cylinder is fixedly connected with the push plate, the threaded barrel and the ultrasonic transducer are both fixedly installed at the bottom of the push plate, and the electrode tip is installed in the threaded barrel in a threaded mode. The output end of the ultrasonic transducer is fixedly installed on the ultrasonic transducer. Compared with the prior art, the electrode tip has the following advantages and effects that friction between the electrode tip and a workpiece can be effectively reduced, abrasion of the electrode tip is reduced, the service life of the electrode tip is prolonged, the workpiece can be conveniently clamped and fixed, and the machining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fine hole discharge machines, and particularly to a high-efficiency fine hole discharge machine based on ultrasonic assistance. Background Art

[0002] A fine hole discharge machine, also known as an electric discharge perforator, drilling machine, or small hole machine, is mainly used for drilling operations, that is, drilling holes in molds. Its working principle is to use a thin metal copper tube (referred to as an electrode wire) that moves continuously and vertically up and down as an electrode to perform pulsed spark discharge on the workpiece to erode the metal and form holes. Different from electric discharge wire cutting machines and molding machines, the electrode of its electric pulse is a hollow copper rod, and the medium passes through the thin hole in the middle of the copper rod hole to play a role in cooling and chip removal. Discharge between the electrode and the metal generates high temperature to corrode the metal to achieve the purpose of perforation, and is used to process fine holes in super-hard steel, cemented carbide, copper, aluminum, and any conductive material. The smallest hole that can be processed is 0.15 mm, and it can also process small holes with a taper, and is widely used in precision mold processing.

[0003] The authorized announcement number CN211727792U discloses a fine hole discharge machine. Through the through holes densely distributed on the upper surface of the workbench and connected to the cavity, during the processing of the product, the generated waste chips can be cleaned up, and thus the quality of the produced product can be better.

[0004] However, this device adjusts the position of processing the workpiece by controlling the movement of the discharge machine. However, when the rotating head processes the workpiece through materials such as copper tubes, the copper tube may be damaged due to small fluctuations or movements of the discharge machine, increasing the consumption of resources. At the same time, this device lacks a fixing device for the workpiece. Under normal conditions, the workpiece will remain stationary, but when the operator accidentally hits the device, the internal workpiece may move, resulting in possible damage to the surface of the workpiece and scrapping of the workpiece, increasing the processing cost. Moreover, currently, only simple fine hole processing is carried out by feeding the electrode head, and the friction between the electrode head and the workpiece is large, which will reduce the service life of the electrode head. Therefore, it is necessary to design a high-efficiency fine hole discharge machine based on ultrasonic assistance to solve the above problems.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-efficiency fine hole discharge machine based on ultrasonic assistance to solve the above problems.

[0007] The above technical purpose of the present invention is achieved through the following technical solutions: A high-efficiency fine hole discharge machine based on ultrasonic assistance, comprising:

[0008] A base, on which an ultrasonic assistance mechanism and a clamping mechanism are provided;

[0009] The ultrasonic assistance mechanism includes a connecting frame, a hydraulic cylinder, a push plate, a threaded cylinder, an electrode head, an ultrasonic transducer and an ultrasonic transducer output end;

[0010] The connecting frame is fixedly installed on the top of the base, the hydraulic cylinder is fixedly installed on the top of the connecting frame, the hydraulic rod of the hydraulic cylinder is fixedly connected with the push plate, the threaded cylinder and the ultrasonic transducer are both fixedly installed at the bottom of the push plate, the electrode head is threadedly installed in the threaded cylinder, the ultrasonic transducer output end is fixedly installed on the ultrasonic transducer, and the ultrasonic transducer output end is fixedly connected with the threaded cylinder.

[0011] A further setting of the present invention is that: the clamping mechanism includes a round box, a filter plate, a support table, a connecting pipe, a sealing rod one, a clamping plate, a sealing rod two, a power motor, a rotating shaft, a chassis, a vertical plate and a rubber knocking rod. The round box is fixedly installed on the top of the base, the filter plate is fixedly installed inside the round box, the support table is fixedly installed on the top of the filter plate, the connecting pipe is fixedly installed on the round box, the sealing rod one and the sealing rod two are both slidably and sealingly installed on the connecting pipe, the clamping plate is fixedly connected with the sealing rod one, the output end of the power motor is fixedly connected with the rotating shaft, an external thread is provided on the outer side of the rotating shaft, a threaded hole is provided at the bottom of the chassis, the external thread is threadedly connected with the threaded hole, the top of the chassis is fixedly connected with the sealing rod two, the vertical plate is fixedly installed at the bottom of the filter plate, and the rubber knocking rod is fixedly installed on the outer side of the rotating shaft.

[0012] A further setting of the present invention is that: the bottom of the base is fixedly connected with a stable base, and the power motor is fixedly installed on the stable base.

[0013] By adopting the above technical solution, the stability after the installation of the power motor is improved.

[0014] A further setting of the present invention is that: a moving hole is provided on the top of the base, and the sealing rod two is slidably installed in the moving hole.

[0015] A further setting of the present invention is that: the connecting pipe is filled with hydraulic oil located between the sealing rod one and the sealing rod two.

[0016] By adopting the above technical solution, the transmission of force is facilitated.

[0017] A further setting of the present invention is that: a plurality of inner cylinders are fixedly provided on the inner wall of the round box, a guide rod is slidably connected in the inner cylinder, and the guide rod is fixedly connected with the clamping plate.

[0018] By adopting the above technical solution, the clamping plate is guided.

[0019] A further setting of the present invention is that a drain pipe is fixedly connected to the round box.

[0020] A further setting of the present invention is that the rotating shaft is rotatably installed on the base and the round box.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. Through the ultrasonic auxiliary mechanism provided in the present invention, the vibration of the threaded cylinder drives the electrode head to generate high-frequency micro-vibrations. When the hydraulic cylinder pushes the push plate to make the electrode head feed towards the workpiece for fine hole discharge machining, it can effectively reduce the friction between the electrode head and the workpiece, reduce the wear of the electrode head, and extend its service life.

[0023] 2. Through the clamping mechanism provided in the present invention, when the power motor is started, multiple clamping plates can move towards the middle simultaneously, which is beneficial to improving the clamping accuracy and reliability of the workpiece. At the same time, it also reduces the wear of mechanical components and extends the service life of the clamping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 is a schematic structural diagram of a high-efficiency fine hole discharge machine based on ultrasonic assistance proposed by the present invention Figure 1 .

[0026] Figure 2 is a schematic structural diagram of a high-efficiency fine hole discharge machine based on ultrasonic assistance proposed by the present invention Figure 2 .

[0027] Figure 3 is a schematic sectional structural diagram of a high-efficiency fine hole discharge machine based on ultrasonic assistance proposed by the present invention Figure 1 .

[0028] Figure 4 is a schematic sectional structural diagram of a high-efficiency fine hole discharge machine based on ultrasonic assistance proposed by the present invention Figure 2 .

[0029] Figure 5 is Figure 3 a schematic diagram of the structure of part A in

[0030] Figure 6 is Figure 4 a schematic diagram of the structure of part B in

[0031] In the figure, 1 is the base; 2 is the connecting frame; 3 is the hydraulic cylinder; 4 is the push plate; 5 is the threaded cylinder; 6 is the electrode head; 7 is the ultrasonic transducer; 8 is the round box; 9 is the filter plate; 10 is the support platform; 11 is the connecting pipe; 12 is the first sealing rod; 13 is the clamping plate; 14 is the second sealing rod; 15 is the inner cylinder; 16 is the guide rod; 17 is the power motor; 18 is the rotating shaft; 19 is the chassis; 20 is the vertical plate; 21 is the rubber tapping rod; 22 is the drain pipe; 23 is the stable base; 24 is the output end of the ultrasonic transducer. Specific embodiments

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the present invention provides an efficient fine hole electric discharge machine based on ultrasonic assistance, including:

[0035] A base 1, on which an ultrasonic assistance mechanism and a clamping mechanism are provided;

[0036] The ultrasonic assistance mechanism includes a connecting frame 2, a hydraulic cylinder 3, a push plate 4, a threaded cylinder 5, an electrode head 6, an ultrasonic transducer 7, and an output end 24 of the ultrasonic transducer;

[0037] The connecting frame 2 is fixedly installed on the top of the base 1, the hydraulic cylinder 3 is fixedly installed on the top of the connecting frame 2, the hydraulic rod of the hydraulic cylinder 3 is fixedly connected to the push plate 4, both the threaded cylinder 5 and the ultrasonic transducer 7 are fixedly installed at the bottom of the push plate 4, the electrode head 6 is threadedly installed in the threaded cylinder 5, the output end 24 of the ultrasonic transducer is fixedly installed on the ultrasonic transducer 7, and the output end 24 of the ultrasonic transducer is fixedly connected to the threaded cylinder 5.

[0038] Through the above ultrasonic assistance mechanism, the ultrasonic transducer 7 is activated, and the vibration is transmitted to the threaded cylinder 5 through the output end 24 of the ultrasonic transducer. Since the electrode head 6 is threadedly installed in the threaded cylinder 5, the vibration of the threaded cylinder 5 drives the electrode head 6 to generate high-frequency micro-vibrations. When the hydraulic cylinder 3 pushes the push plate 4 to make the electrode head 6 feed towards the workpiece for fine hole electrical discharge machining, the friction between the electrode head 6 and the workpiece can be effectively reduced, the wear of the electrode head 6 can be reduced, and its service life can be extended.

[0039] Specifically, the clamping mechanism includes a round box 8, a filter plate 9, a support table 10, a connecting pipe 11, a sealing rod 12, a clamping plate 13, a sealing rod 14, a power motor 17, a rotating shaft 18, a chassis 19, a vertical plate 20 and a rubber knocking rod 21. The round box 8 is fixedly installed on the top of the base 1, the filter plate 9 is fixedly installed inside the round box 8, the support table 10 is fixedly installed on the top of the filter plate 9, the connecting pipe 11 is fixedly installed on the round box 8, the sealing rod 12 and the sealing rod 14 are both slidably and sealingly installed on the connecting pipe 11, the clamping plate 13 is fixedly connected to the sealing rod 12, the output end of the power motor 17 is fixedly connected to the rotating shaft 18, external threads are provided on the outer side of the rotating shaft 18, screw holes are provided at the bottom of the chassis 19, and the external threads are threadedly connected to the screw holes. The top of the chassis 19 is fixedly connected to the sealing rod 14, the vertical plate 20 is fixedly installed at the bottom of the filter plate 9, and the rubber knocking rod 21 is fixedly installed on the outer side of the rotating shaft 18.

[0040] With the above structure, the workpiece is placed on the support table 10, and the power motor 17 is activated. When the chassis 19 rotates along the axial direction during the rotation of the rotating shaft 18, since the top of the chassis 19 is fixedly connected to the sealing rod 14, the sealing rod 14 slides inside the connecting pipe 11. The connecting pipe 11 is filled with hydraulic oil, and both the sealing rod 12 and the sealing rod 14 are slidably and sealingly installed on the connecting pipe 11. When the sealing rod 14 moves, the pressure is transmitted through the hydraulic oil to push the sealing rod 12 to move synchronously. The sealing rod 12 is fixedly connected to the clamping plate 13, thereby driving the clamping plate 13 to move towards the workpiece to realize the clamping and fixing of the workpiece.

[0041] The filter plate 9 intercepts the debris, and the working fluid enters the round box 8 through the filter plate 9. When the power motor 17 continues to operate and the rotating shaft 18 rotates, the rubber knocking rod 21 fixed on the outer side of the rotating shaft 18 will periodically knock the vertical plate 20, causing the filter plate 9 to vibrate, which helps to prevent the filter holes of the filter plate 9 from being blocked by debris.

[0042] Specifically, a stable base 23 is fixedly connected to the bottom of the base 1, and the power motor 17 is fixedly installed on the stable base 23. A movable hole is opened at the top of the base 1, and the sealing rod 14 is slidably installed in the movable hole. It should be noted that the stable base 23 significantly enhances the stability of the entire equipment and reduces the possibility of displacement or shaking of the equipment due to vibration, external force collision and other factors during operation. The power motor 17 is installed on the stable base 23 to avoid the vibration generated during the operation of the motor being transmitted to the base 1 and interfering with the precise processing of the electrode head 6. The movable hole opened at the top of the base 1 provides a precise sliding track for the sealing rod 14, ensuring that the sealing rod 14 always maintains straightness during the movement, so that the clamping plate 13 can clamp or release the workpiece smoothly and accurately, ensuring the stability and reliability of the operation of the clamping mechanism.

[0043] Specifically, the connecting tube 11 is filled with hydraulic oil located between the sealing rod 12 and the sealing rod 2 14. It should be noted that the hydraulic oil is incompressible as a pressure transmission medium in the connecting tube 11. When the sealing rod 2 14 is displaced due to the movement of the chassis 19 driven by the rotating shaft 18, the hydraulic oil can evenly and instantly transmit the pressure exerted on the sealing rod 2 14 to the sealing rod 12, prompting the sealing rod 12 to move synchronously, thereby realizing a smooth and symmetrical clamping action of the clamping plate 13. Compared with direct transmission methods such as mechanical connecting rods, the hydraulic oil transmits pressure more smoothly, avoiding the jamming and impact phenomena that may occur in rigid connections, ensuring the stable application of clamping force, and helping to improve the accuracy and reliability of workpiece clamping. At the same time, it also reduces the wear of mechanical components and extends the service life of the clamping mechanism.

[0044] Specifically, a plurality of inner cylinders 15 are fixedly provided on the inner wall of the round box 8, and a guide rod 16 is slidably connected in the inner cylinder 15, and the guide rod 16 is fixedly connected to the clamping plate 13. It should be noted that the guide structure composed of the inner cylinder 15 and the guide rod 16 has a good guiding and stabilizing effect on the movement of the clamping plate 13. When the clamping plate 13 is driven by the sealing rod 12 to clamp or release the workpiece, the guide rod 16 slides smoothly in the inner cylinder 15, effectively limiting the movement trajectory of the clamping plate 13 so that it can only move along a predetermined direction. This not only ensures the straightness of the clamping plate 13 during operation, prevents it from deflecting or shaking, and thus ensures the accuracy and stability of the workpiece clamping; moreover, this guide structure shares part of the force on the clamping plate 13 during movement, reduces the load on the sealing rod 12, reduces the wear of related components, and improves the overall durability and working precision of the clamping mechanism.

[0045] Specifically, a drain pipe 22 is fixedly connected to the round box 8. It should be noted that the setting of the drain pipe 22 provides a convenient way for discharging the working fluid generated during the processing. During micro-hole electric discharge machining, a large amount of working fluid is used for cooling and chip removal. After the working fluid filters debris through the filter plate 9, it flows into the round box 8. As the processing time extends, the working fluid in the round box 8 will gradually increase. If not discharged in time, it may overflow from the round box 8, affecting the normal operation of the equipment and even potentially damaging the electrical components inside the equipment. The drain pipe 22 can be connected to an external recycling device or directly discharged to a designated location, facilitating the timely cleaning of the working fluid in the round box 8, maintaining the cleanliness of the equipment working environment, ensuring the stable operation of the equipment, and at the same time being conducive to the recycling treatment of the working fluid, realizing the recycling of resources and reducing the processing cost.

[0046] Specifically, the rotating shaft 18 is rotatably installed on the base 1 and the round box 8. It should be noted that the rotatable installation method of the rotating shaft 18 on the base 1 and the round box 8 provides it with stable support and an accurate rotation axis. This installation method enables the rotating shaft 18 to rotate smoothly and smoothly under the drive of the power motor 17, avoiding shaking or eccentricity caused by unstable installation. The stable rotation of the rotating shaft 18 is the prerequisite for the axial stable movement of the chassis 19, thereby ensuring the stable operation of the sealing rod two 14 and the clamping plate 13. At the same time, the accurate rotation axis ensures that the rubber knocking rod 21 can accurately knock the vertical plate 20 during rotation, realizing the effective vibration of the filter plate 9, improving the stability and reliability of the processing process, and ensuring the efficient and continuous operation of the equipment.

[0047] Working principle:

[0048] S1: Start the ultrasonic transducer 7. It converts the input high-frequency electrical signal into mechanical vibration and transmits it to the threaded cylinder 5 through the output end 24 of the ultrasonic transducer. Since the electrode head 6 is threadedly installed in the threaded cylinder 5, the vibration of the threaded cylinder 5 drives the electrode head 6 to generate high-frequency micro-vibrations. When the hydraulic cylinder 3 pushes the push plate 4 to make the electrode head 6 feed towards the workpiece for micro-hole electric discharge machining, the high-frequency vibration of the electrode head 6 plays multiple roles. On the one hand, it can effectively reduce the friction between the electrode head 6 and the workpiece, reduce the wear of the electrode head 6, and extend its service life. On the other hand, it improves the feeding accuracy and stability of the electrode head 6, making the size accuracy of the micro-holes processed higher and the surface quality better.

[0049] S2: Place the workpiece on the support table 10, start the power motor 17, the output end of which drives the rotation of the rotating shaft 18. The external thread on the outside of the rotating shaft 18 is in threaded engagement with the threaded hole at the bottom of the chassis 19, so that the chassis 19 moves axially when the rotating shaft 18 rotates. The top of the chassis 19 is fixedly connected to the second sealing rod 14. Therefore, the second sealing rod 14 slides in the connecting pipe 11. The connecting pipe 11 is filled with hydraulic oil, and both the first sealing rod 12 and the second sealing rod 14 are slidably and sealingly installed on the connecting pipe 11. When the second sealing rod 14 moves, it transmits pressure through the hydraulic oil to push the first sealing rod 12 to move synchronously. The first sealing rod 12 is fixedly connected to the clamping plate 13, thereby driving the clamping plate 13 to move towards the workpiece to realize the clamping and fixing of the workpiece;

[0050] S3: During the processing, the inner cylinder 15 and the guide rod 16 structures on the inner wall of the round box 8 can ensure the smooth movement of the clamping plate 13. The chips and the working fluid generated during the processing fall onto the filter plate 9. The filter plate 9 intercepts the chips, and the working fluid enters the round box 8 through the filter plate 9. When the power motor 17 continues to operate and the rotating shaft 18 rotates, the rubber knocking rod 21 fixed on the outside of the rotating shaft 18 will periodically knock on the vertical plate 20, causing the filter plate 9 to vibrate, which helps to prevent the filter holes of the filter plate 9 from being blocked by chips. In addition, the drain pipe 22 on the round box 8 can regularly drain the working fluid accumulated in the round box 8.

[0051] The above has introduced in detail a high-efficiency micro-hole electric discharge machine based on ultrasonic assistance provided by the present invention. Specific embodiments are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An efficient fine-hole electric discharge machine based on ultrasonic assistance, characterized in that Comprising: A base (1), on which an ultrasonic assistance mechanism and a clamping mechanism are provided; The ultrasonic assistance mechanism includes a connecting frame (2), a hydraulic cylinder (3), a push plate (4), a threaded cylinder (5), an electrode head (6), an ultrasonic transducer (7), and an ultrasonic transducer output end (24); The connecting frame (2) is fixedly installed on the top of the base (1), the hydraulic cylinder (3) is fixedly installed on the top of the connecting frame (2), the hydraulic rod of the hydraulic cylinder (3) is fixedly connected to the push plate (4), both the threaded cylinder (5) and the ultrasonic transducer (7) are fixedly installed at the bottom of the push plate (4), the electrode head (6) is threadedly installed in the threaded cylinder (5), the ultrasonic transducer output end (24) is fixedly installed on the ultrasonic transducer (7), and the ultrasonic transducer output end (24) is fixedly connected to the threaded cylinder (5).

2. The high-efficiency fine-hole electric discharge machine based on ultrasonic assistance according to claim 1, wherein The clamping mechanism includes a round box (8), a filter plate (9), a support table (10), a connecting pipe (11), a sealing rod one (12), a clamping plate (13), a sealing rod two (14), a power motor (17), a rotating shaft (18), a chassis (19), a vertical plate (20), and a rubber knocking rod (21). The round box (8) is fixedly installed on the top of the base (1), the filter plate (9) is fixedly installed inside the round box (8), the support table (10) is fixedly installed on the top of the filter plate (9), the connecting pipe (11) is fixedly installed on the round box (8), both the sealing rod one (12) and the sealing rod two (14) are slidably and sealingly installed on the connecting pipe (11), the clamping plate (13) is fixedly connected to the sealing rod one (12), the output end of the power motor (17) is fixedly connected to the rotating shaft (18), an external thread is provided on the outer side of the rotating shaft (18), a threaded hole is provided at the bottom of the chassis (19), the external thread is threadedly connected to the threaded hole, the top of the chassis (19) is fixedly connected to the sealing rod two (14), the vertical plate (20) is fixedly installed at the bottom of the filter plate (9), and the rubber knocking rod (21) is fixedly installed on the outer side of the rotating shaft (18).

3. The high-efficiency fine-hole electric discharge machine based on ultrasonic assistance according to claim 1, wherein The bottom of the base (1) is fixedly connected to a stable base (23), and the power motor (17) is fixedly installed on the stable base (23).

4. An efficient fine-hole electric discharge machine based on ultrasonic assistance according to claim 2, characterized in that, A moving hole is provided at the top of the base (1), and the sealing rod two (14) is slidably installed in the moving hole.

5. The high-efficiency fine-hole discharge machine based on ultrasonic assistance according to claim 2, wherein The connecting pipe (11) is filled with hydraulic oil located between the sealing rod one (12) and the sealing rod two (14).

6. The highly efficient micro-hole discharge machine based on ultrasonic assistance according to claim 2, wherein, A plurality of inner cylinders (15) are fixedly provided on the inner wall of the round box (8), a guide rod (16) is slidably connected in the inner cylinder (15), and the guide rod (16) is fixedly connected to the clamping plate (13).

7. An efficient fine-hole electric discharge machine based on ultrasonic assistance according to claim 2, characterized in that, A drain pipe (22) is fixedly connected to the round box (8).

8. An efficient fine-hole discharge machine based on ultrasonic assistance according to claim 2, characterized in that, The rotating shaft (18) is rotatably installed on the base (1) and the round box (8).

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