Electric spark machine oil groove capable of conducting secondary filtering

By introducing a secondary filtration design with filter plates and filter yarn assemblies into the EDM oil tank, the problem of high working fluid recovery filtration pressure in the existing technology is solved, and the efficient recycling of the working fluid is realized.

CN224157850UActive Publication Date: 2026-04-24GUANGDONG HANBA INTELLIGENT EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG HANBA INTELLIGENT EQUIP CO LTD
Filing Date
2025-05-26
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

The existing working fluid recovery and filtration device for EDM machines only has one filter plate, which results in high subsequent filtration pressure and affects the recycling of the working fluid.

Method used

Design an EDM oil tank with secondary filtration, comprising a filter plate and a filter yarn assembly. The working fluid first undergoes a first filtration through the filter plate, where larger particles are trapped. Then, it undergoes a second filtration through the filter yarn assembly to further remove impurities.

Benefits of technology

Secondary filtration significantly reduces the difficulty of subsequent filtration of the working fluid and improves the recycling efficiency of the working fluid.

✦ Generated by Eureka AI based on patent content.

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Abstract

A left side plate and a right side plate are symmetrically arranged on the two sides of the upper surface of a bottom plate, a front end plate and a rear end plate are arranged at the positions, located at the two ends of the left side plate and the two ends of the right side plate, of the upper surface of the bottom plate respectively, and a workbench installation base is further arranged on the upper surface of the bottom plate. Cavities are formed in the left side plate and the right side plate, a boss is arranged on the periphery of the workbench mounting base, a slope is arranged on the periphery of the boss, the filter plate is of a frame-shaped structure and is arranged on the periphery of the workbench mounting base, and the two filter yarn assemblies are arranged in the cavities of the left side plate and the right side plate correspondingly. Liquid return ports are formed in the outer sides of the left side plate and the right side plate and are higher than the yarn filtering assembly, slag discharge ports are formed in one sides of the lower parts of the left side plate and the right side plate and are lower than the yarn filtering assembly, and a plurality of through grooves are formed in the bottoms of the inner sides of the left side plate and the right side plate in a penetrating manner. The treatment difficulty of subsequent filtering of the working solution is greatly reduced.
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Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to electrical discharge machine tools, specifically an electrical discharge machine oil tank with secondary filtration capability. Background Technology

[0002] An electrical discharge machining (EDM) machine is a type of machining equipment widely used in the manufacture of various metal molds and mechanical equipment. The EDM machine utilizes the electro-erosion effect generated by pulsed discharge between two electrodes immersed in a working fluid to remove conductive materials; it is also known as electrical discharge machining or electro-erosion machining.

[0003] In existing technology, the worktable of an EDM machine is installed in an oil tank. After the workpiece is fixed on the worktable, it is processed by the electrodes of the EDM machine. The EDM machine requires a working fluid for cooling during operation, and the working fluid is recovered from the oil tank. However, the oil tank only has one filter plate, and the recovered working fluid is subsequently filtered by a separate filtration device. Therefore, the subsequent filtration pressure is relatively high, which may even affect the recycling of the working fluid. Therefore, there is an urgent need for an improved technology to solve the above-mentioned problems in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide an EDM oil tank that can be filtered twice, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an EDM oil tank capable of secondary filtration, comprising an oil tank body, filter plates, and filter yarn assemblies; the oil tank body includes a bottom plate, a front end plate, a rear end plate, a left side plate, a right side plate, and a workbench mounting base; the left side plate and right side plate are symmetrically arranged on both sides of the upper surface of the bottom plate; the front end plate and rear end plate are respectively arranged at both ends of the left side plate and right side plate on the upper surface of the bottom plate; the workbench mounting base is also provided on the upper surface of the bottom plate; cavities are formed inside the left side plate and right side plate. The upper surfaces of the left and right side plates are open and covered with covers. The workbench mounting base has a boss around its periphery, and the boss has a ramp around its periphery. The filter plate has a frame structure and is located around the workbench mounting base. There are two filter yarn assemblies, which are respectively located in the cavities of the left and right side plates. The outer side of the left and right side plates, above the filter yarn assemblies, has a return liquid port. The lower side of the left and right side plates, below the filter yarn assemblies, has a slag discharge port. The bottom of the inner side of the left and right side plates is provided with several through grooves.

[0006] Preferably, the present invention provides an EDM oil tank capable of secondary filtration, wherein the inner surfaces of the left and right side plates are provided with a first support plate, the height of the first support plate matches the height of the boss, the outer side of the filter plate is supported on the upper surface of the first support plate and fastened to it with bolts, and the inner side of the filter plate is supported on the upper surface of the boss and fastened to it with bolts.

[0007] Preferably, the present invention provides an EDM oil tank capable of secondary filtration, wherein the inner walls of the left and right side plates are provided with a second support plate.

[0008] Preferably, the present invention provides an EDM oil tank capable of secondary filtration, wherein the filter assembly includes a clamping frame and a filter cloth, there are two clamping frames, the filter cloth is clamped between the two clamping frames, and the periphery of the clamping frame is supported by a second support plate and fastened by bolts.

[0009] Preferably, the present invention provides an EDM oil tank capable of secondary filtration, wherein the upper surface of the workbench mounting base is provided with a workbench.

[0010] Preferably, the present invention provides an EDM oil tank capable of secondary filtration, wherein the inner walls of the upper part of the left and right side plates are provided with a plurality of overflow grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) A workbench mounting base with a boss is provided on the upper surface of the base plate. Filter plates are provided between the front plate, rear plate, left plate and right plate and the workbench mounting base. Filter yarn assemblies are provided in the cavities of the left plate and right plate. The return ports on the outside of the left plate and right plate are higher than the filter yarn assemblies. The working fluid is first filtered through the filter plate. The larger particles are filtered through the filter plate and retained on the upper surface of the filter plate. Then they enter the left plate and right plate and are filtered through the filter yarn assembly for secondary filtration. Thus, impurities can be filtered in the oil tank for secondary filtration, which greatly reduces the difficulty of subsequent filtration of the working fluid.

[0013] (2) The workbench mounting base is provided with a ramp on the outer periphery of the boss to ensure that the fine slag that is not filtered in the first stage can smoothly enter the interior of the left and right side plates, so as to facilitate discharge through the slag outlet. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 For the appendix Figure 1 Enlarged structural diagram of point A in the middle;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 For the appendix Figure 1 Schematic diagram of the cross-sectional structure at point BB;

[0018] Figure 5 This is a schematic diagram of the filter yarn assembly.

[0019] In the diagram: Filter plate 1, Filter yarn assembly 2, Base plate 3, Front end plate 4, Rear end plate 5, Left side plate 6, Right side plate 7, Workbench mounting base 8, Cover plate 9, Boss 10, Slope 11, Return liquid port 12, Slag discharge port 13, Through groove 14, First support plate 15, Second support plate 16, Workbench 17, Overflow groove 18, Clamping frame 201, Filter yarn 202. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] It should be noted that in the description of this utility model, the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", 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 utility model 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 utility model.

[0022] Please see Figure 1-5This utility model provides a technical solution: an EDM oil tank capable of secondary filtration, comprising an oil tank body, a filter plate 1, and a filter yarn assembly 2; the oil tank body includes a bottom plate 3, a front end plate 4, a rear end plate 5, a left side plate 6, a right side plate 7, and a workbench mounting base 8. The left side plate 6 and right side plate 7 are symmetrically arranged on both sides of the upper surface of the bottom plate 3. The front end plate 4 and rear end plate 5 are respectively arranged at both ends of the left side plate 6 and right side plate 7 on the upper surface of the bottom plate 3. The workbench mounting base 8 is also provided on the upper surface of the bottom plate 3, and a workbench is provided on the upper surface of the workbench mounting base 8. 17. The workpiece is supported and clamped by the worktable 17. Both the left side plate 6 and the right side plate 7 have cavities inside. The upper surfaces of the left side plate 6 and the right side plate 7 are open and are provided with cover plates 9. The worktable mounting base 8 is provided with a boss 10 around its periphery. The boss 10 is provided with a ramp 11 around its periphery. The filter plate 1 has a frame structure and is provided around the worktable mounting base 8. The inner surfaces of the left side plate 6 and the right side plate 7 are provided with a first support plate 15. The height of the first support plate 15 matches the height of the boss 10. The outer side of the filter plate 1 is supported by the upper surface of the first support plate 15. The filter plate 1 is supported on the upper surface of the boss 10 and fastened with bolts. The filter plate 1 is installed and fixed by the cooperation of the first support plate 15. There are two yarn assemblies 2, which are respectively set in the cavities of the left side plate 6 and the right side plate 7. The inner walls of the left side plate 6 and the right side plate 7 are provided with second support plates 16 to install and fix the filter yarn assembly 2. The filter yarn assembly 2 includes a clamping frame 201 and a filter yarn 202. There are two clamping frames 201, and the filter yarn 202 is clamped between the two clamping frames 201. The outer perimeter of the clamping frame 201 is supported by the second support plate 16 and fastened with bolts. A finer-pore filter cloth 202 enables secondary filtration of the working fluid, ensuring filtration efficiency. Return ports 12 are located on the outer side of the left side plate 6 and the right side plate 7, above the filter cloth assembly 2. Slag discharge ports 13 are located on the lower side of the left side plate 6 and the right side plate 7, below the filter cloth assembly 2. Several through grooves 14 are formed through the bottom inner side of both the left side plate 6 and the right side plate 7. Several overflow grooves 18 are formed through the inner wall of the upper part of the left side plate 6 and the right side plate 7. These overflow grooves 18 prevent the working fluid from overflowing directly from the top of the oil tank body when there is excessive slag, the flow rate is low, and the working fluid cannot be discharged smoothly.

[0023] Installation Method and Operating Principle: First, weld the bottoms of the front plate 4, rear plate 5, left plate 6, and right plate 7 to the base plate 3. Weld the sides of the front plate 4 to the left plate 6 and right plate 7, and the sides of the rear plate 5 to the left plate 6 and right plate 7. Then, install the workbench mounting base 8 on the upper surface of the base plate 3 to complete the assembly of the oil tank body. The inner walls of the front plate 4, rear plate 5, left plate 6, and right plate 7, at the same height as the boss 10 of the workbench mounting base 8, are welded with a first support plate 15. The inner walls of the left plate 6 and right plate 7 are welded with a second support plate 16. Place the filter plate 1 into the right tank body, supporting it on the boss 10 and the first support plate 15, and secure it with bolts. Place the two filter yarn assemblies 2 into the left plate 6 and right plate 7, supporting them on the second support plate 16, and secure them with bolts to complete the assembly of the oil tank. In use, install the workbench 17 on the workbench mounting base 8. When the EDM machine processes the workpiece through the electrodes, the working fluid is sprayed onto the electrodes and the workpiece. After the coolant covers the workpiece, the working fluid is sprayed onto the electrodes. The debris generated during processing flows along the worktable 17 to the filter plate 1. Some debris is trapped on the filter plate 1 through the densely distributed filter holes. Smaller debris falls into the bottom of the oil tank body through the filter holes of the filter plate 1. Due to the flow direction of the working fluid, it passes through the channel 14 and enters the left side plate 6 and the right side plate 7. When the liquid level exceeds the filter yarn assembly 2, the working fluid flows back to the working fluid storage tank from the return port 12 of the left side plate 6 and the right side plate 7. When the filter plate 1 is not in operation, the impurities are extracted and collected by the suction device. The impurities at the bottom of the left side plate 6 and the right side plate 7 are discharged through the slag discharge port 13. This utility model has a reasonable structure. The upper surface of the base plate 3 is provided with a workbench mounting seat 8 with a boss 10. Filter plates 1 are arranged between the front plate 4, rear plate 5, left plate 6, and right plate 7 and the workbench mounting seat 8. Filter yarn assemblies 2 are arranged in the cavities inside the left plate 6 and right plate 7. The return liquid ports 12 on the outer side of the left plate 6 and right plate 7 are higher than the filter yarn assemblies 2. The working liquid first undergoes a first filtration through the filter plate 1. The larger particles are filtered through the filter plate 1 and trapped on the upper surface of the filter plate 1. Then, they enter the left plate 6 and right plate 7 and undergo a second filtration through the filter yarn assembly 2. Thus, impurities can be filtered a second time in the oil tank, which greatly reduces the difficulty of subsequent filtration of the working liquid. The workbench mounting seat 8 is provided with a ramp 11 around the boss 10 to ensure that the fine particles that are not filtered in the first filtration can smoothly enter the interior of the left plate 6 and right plate 7, so as to facilitate discharge through the slag discharge port 13.

[0024] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

[0025] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications and equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A secondary-filterable EDM oil tank, characterized in that: The system includes an oil tank body, a filter plate (1), and a filter yarn assembly (2). The oil tank body includes a bottom plate (3), a front end plate (4), a rear end plate (5), a left side plate (6), a right side plate (7), and a workbench mounting base (8). The left side plate (6) and the right side plate (7) are symmetrically arranged on both sides of the upper surface of the bottom plate (3). The front end plate (4) and the rear end plate (5) are respectively arranged on the upper surface of the bottom plate (3) and at both ends of the left side plate (6) and the right side plate (7). The workbench mounting base (8) is also provided on the upper surface of the bottom plate (3). The left side plate (6) and the right side plate (7) are both provided with cavities. The upper surfaces of the left side plate (6) and the right side plate (7) are open and are provided with cover plates. (9) A boss (10) is provided on the periphery of the workbench mounting base (8). A ramp (11) is provided on the periphery of the boss (10). The filter plate (1) is a frame structure and is located on the periphery of the workbench mounting base (8). There are two filter yarn assemblies (2) and they are respectively located in the cavities of the left side plate (6) and the right side plate (7). A return liquid port (12) is provided on the outer side of the left side plate (6) and the right side plate (7) and above the filter yarn assembly (2). A slag discharge port (13) is provided on the lower side of the left side plate (6) and the right side plate (7) and below the filter yarn assembly (2). Several through grooves (14) are provided on the bottom of the inner side of the left side plate (6) and the right side plate (7).

2. The EDM oil tank with secondary filtration capability according to claim 1, characterized in that: The inner surfaces of the left side plate (6) and the right side plate (7) are provided with a first support plate (15). The height of the first support plate (15) matches the height of the boss (10). The outer side of the filter plate (1) is supported on the upper surface of the first support plate (15) and is fastened by bolts. The inner side of the filter plate (1) is supported on the upper surface of the boss (10) and is fastened by bolts.

3. The EDM oil tank with secondary filtration capability according to claim 1, characterized in that: The inner walls of the left side plate (6) and the right side plate (7) are provided with a second support plate (16).

4. The EDM oil tank with secondary filtration capability according to claim 1, characterized in that: The filter yarn assembly (2) includes a clamping frame (201) and a filter yarn (202). There are two clamping frames (201), and the filter yarn (202) is clamped between the two clamping frames (201). The periphery of the clamping frame (201) is supported by a second support plate (16) and fastened by bolts.

5. The EDM oil tank with secondary filtration capability according to claim 1, characterized in that: The workbench mounting base (8) has a workbench (17) on its upper surface.

6. The EDM oil tank with secondary filtration capability according to claim 1, characterized in that: Several overflow grooves (18) are provided through the inner walls of the upper part of the left side plate (6) and the right side plate (7).