Electric spark machining equipment

Abstract

The utility model discloses an electric spark machining device which comprises a working arm, an operation table and a machine tool, a filter box is installed on one side of the machine tool, an oil inlet and an oil outlet are formed in the filter box, a filter assembly is installed in the filter box, the filter assembly comprises a magnetic suction filter assembly and a dust filter assembly, and the magnetic suction filter assembly and the dust filter assembly are arranged on the machine tool. The magnetic suction filtering assembly comprises a magnetic suction filter, a permanent magnet is installed in the magnetic suction filter, the dust filtering assembly comprises a first filtering insertion plate and a second filtering insertion plate, embedded handles are installed on the first filtering insertion plate and the second filtering insertion plate, and a through hole and an insertion opening are formed in the upper end face of the filtering box. And the magnetic suction filter and the first filtering insertion plate respectively penetrate through the through hole and the insertion opening and are inserted into the filtering box. Compared with the prior art, the electric spark oil filter has the beneficial effects that the electric spark oil filter in the electric spark machining equipment is convenient to disassemble and replace, the adsorption of metal scraps on the filter screen is reduced, and the filter screen is convenient to clean.

Description

Technical Field

[0001] This utility model belongs to the field of processing equipment, specifically relating to an electrical discharge machining (EDM) device. Background Technology

[0002] Electrical discharge machining (EDM) equipment utilizes the electro-erosion phenomenon generated during pulsed discharge between the tool electrode and the workpiece to perform dimensional machining. EDM equipment uses the localized, instantaneous high temperatures generated during the discharge to gradually erode away the metal material, thus performing the machining process. Because visible sparks are generated during the discharge process, it is called electrical discharge machining.

[0003] Electrical discharge machining (EDM) requires the use of EDM oil, which is an indispensable discharge medium liquid in EDM. EDM oil can insulate and deionize, cool the high temperature during EDM, and remove carbon slag and metal chips.

[0004] During the processing, EDM oil washes away and carries carbon slag and metal shavings. To reuse EDM oil, it needs to be filtered. The EDM oil filters inside existing EDM equipment are often difficult to disassemble and replace, and the metal shavings attached to the filter screen are difficult to clean. Replacing and cleaning the filter screen often requires a lot of effort. Utility Model Content

[0005] The purpose of this invention is to provide an electrical discharge machining (EDM) device to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides an electrical discharge machining (EDM) device, including a work arm, an operating table, and a machine tool. A filter box is installed on one side of the machine tool, and the filter box has an oil inlet and an oil outlet. A filter assembly is installed inside the filter box, and the filter assembly includes a magnetic suction filter assembly and a dust filter assembly. The magnetic suction filter assembly includes a magnetic suction filter, and a permanent magnet is installed inside the magnetic suction filter. The dust filter assembly includes a first filter insert and a second filter insert, and embedded handles are installed on the first filter insert and the second filter insert.

[0007] In one or more embodiments of this utility model, the upper surface of the filter box is provided with a through hole and an insertion port, and the magnetic filter and the first filter insert plate are respectively inserted into the filter box through the through hole and the insertion port.

[0008] In one or more embodiments of this utility model, a filter plate cover is installed on the upper surface of the first filter plate and the second filter plate, and the embedded handle is installed inside the filter plate cover.

[0009] In one or more embodiments of this utility model, a plurality of sealing gaskets are installed on the filter box, and the sealing gaskets cooperate with the filter plate cover.

[0010] In one or more embodiments of this utility model, a plurality of pairs of sliding grooves are fixedly connected inside the filter box, and the plurality of pairs of sliding grooves cooperate with the first filter insert plate.

[0011] In one or more embodiments of this utility model, a filter plate slot is installed inside the filter box, and the filter plate slot cooperates with the second filter insert.

[0012] In one or more embodiments of this utility model, the magnetic filter is provided with threads, and the magnetic filter is threadedly connected to the filter box.

[0013] In one or more embodiments of this utility model, an external filter screen is installed on the magnetic filter.

[0014] In one or more embodiments of this utility model, the magnetic filter is provided with a fixing slot, the fixing slot cooperates with a permanent magnet, and the permanent magnet passes through the fixing slot and is inserted into the interior of the external filter screen.

[0015] In one or more embodiments of this utility model, the filter box is provided with an observation window.

[0016] Compared with the prior art, the beneficial effects of this utility model are that it makes the EDM oil filter inside the EDM equipment easy to disassemble and replace, reduces the adsorption of metal debris on the filter screen, and facilitates the cleaning of the filter screen. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an electrical discharge machining (EDM) device according to one embodiment of the present invention;

[0018] Figure 2 This is a first structural diagram of a filter box for an electrical discharge machining (EDM) device according to an embodiment of the present invention.

[0019] Figure 3 This is a second structural diagram of a filter box in an electrical discharge machining (EDM) device according to one embodiment of the present invention.

[0020] Figure 4 This is a structural diagram of the internal structure of the filter box of an electrical discharge machining equipment according to one embodiment of the present invention;

[0021] Figure 5 This is an exploded view of the filter box of an electrical discharge machining equipment according to one embodiment of the present invention;

[0022] Figure 6 This is an exploded view of a magnetic filter in an electrical discharge machining (EDM) device according to one embodiment of the present invention.

[0023] Explanation of key figure labels:

[0024] 1-Working arm, 2-Operating table, 3-Machine tool, 4-Filter box, 401-Oil inlet, 402-Oil outlet, 403-Observation window, 404-Clean oil chamber, 405-Sludge oil chamber, 406-Slide groove, 407-Through hole, 408-Insertion, 409-Filter plate slot, 410-Sealing gasket, 5-Magnetic filter, 501-Permanent magnet, 502-Connecting block, 503-Fixing slot, 504-Thread, 505-External filter screen, 6-First filter insert, 601-Filter plate cover, 602-Embedded handle, 7-Second filter insert. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0026] refer to Figures 1-4 As shown, this utility model provides an electrical discharge machining (EDM) device, including a work arm 1, an operating table 2, and a machine tool 3. A filter box 4 is installed on one side of the machine tool 3. The filter box 4 is equipped with an oil inlet 401 and an oil outlet 402. The EDM oil to be filtered enters the sludge chamber 405 inside the filter box 4 through the oil inlet 401, passes through several pairs of magnetic filters 5 and a first filter plate 6 in sequence, and finally passes through a second filter plate 7 installed on the partition inside the filter box 4, entering the clean oil chamber 404 inside the filter box 4.

[0027] The filtered EDM oil inside the clean oil chamber 404 flows out from the oil outlet 402 and enters the operating table 2 for continued use. During operation of the EDM equipment, the filter box maintains the oil level two centimeters above the oil outlet 402 to prevent EDM oil overflow. The oil inlet 401 is installed inside the sludge chamber 405, and the oil outlet 402 is installed inside the clean oil chamber 404. After being filtered by the filter assembly in the sludge chamber 405, the EDM oil enters the clean oil chamber 404 and flows out of the filter box 4 through the oil outlet 402.

[0028] During the EDM process, the EDM oil washes away and carries carbon slag and metal debris. Common materials used in processing include iron and high-carbon steel. The filter box 4 is equipped with a filter assembly, which is used to filter carbon slag and metal debris in the EDM oil. The filter assembly includes a magnetic filter assembly and a dust filter assembly. The magnetic filter assembly is used to adsorb metal debris of iron and high-elastic steel materials in the EDM oil, reducing the amount of metal debris entering the dust filter assembly. The dust filter assembly is used to filter carbon powder and other impurities generated during production.

[0029] refer to Figure 6As shown, the magnetic filter assembly includes a magnetic filter 5, in which a permanent magnet 501 is installed. The permanent magnet 501 is a cuboid magnet made of neodymium iron boron, used to attract iron and high carbon steel metal debris in the EDM oil. An external filter screen 505 is sleeved on the outer layer of the permanent magnet 501. The magnetic force of the permanent magnet 501 is sufficient to attract the metal debris in the surrounding EDM oil to the surface of the external filter screen 505 inside the external filter screen 505.

[0030] refer to Figures 4-5 As shown, the dust filtration assembly includes a first filter plate 6 and a second filter plate 7. Filter cotton is installed on the surface of the first filter plate 6 and the second filter plate 7. The first filter plate 6 and the second filter plate 7 are used to filter carbon powder and impurities in the EDM oil. The EDM oil enters the sludge chamber 405 through the inlet 401. It then passes through a pair of magnetic filters 5 near the inlet 401, which adsorb large metal fragments. Next, the oil flows through a first filter plate 6 near the inlet 401, which filters carbon powder and impurities over a wide area. The oil then passes through another pair of magnetic filters 5 away from the inlet 401, which adsorb small metal dust particles remaining after the initial filtration. Finally, the oil flows through a second filter plate 6 away from the inlet 401, which filters carbon powder and impurities again. The oil then flows through a second filter plate 7 into the clean oil chamber 404.

[0031] refer to Figures 5-6 As shown, the upper surface of the filter box 4 is provided with a through hole 407 and an inlet 408. The magnetic filter 5 passes through the through hole 407 and the inlet 408 and is inserted into the filter box 4. The first filter plate 6 and the second filter plate 7 pass through the inlet 408 and are inserted into the filter box 4. The magnetic filter 5 is provided with a thread 504, and the magnetic filter 5 is threadedly connected to the filter box 4. The magnetic filter 5 can be quickly installed and removed from the upper surface of the filter box 4 by rotating it.

[0032] refer to Figures 3-4As shown, several pairs of sliding grooves 406 are fixedly connected inside the filter box 4. These sliding grooves 406 cooperate with the first filter insert 6. The filter box 4 passes through the insertion port 408 and enters into the sliding groove 406. The first filter insert 6 is slidably installed into the filter box 4 through the sliding groove 406. The sliding groove 406 serves to limit and position the first filter insert 6. A filter plate slot 409 is installed inside the filter box 4. The filter plate slot 409 cooperates with the second filter insert 7. The second filter insert 7 is inserted into the filter plate slot 409 through the insertion port 408 to complete the positioning. A filter plate cover 601 is installed on the upper surface of the first filter insert 6 and the second filter insert 7. An embedded handle 602 is installed inside the filter plate cover 601. The filter plate cover 601 is fixedly connected to the filter screen on the lower surface of the filter plate cover 601. The first filter insert 6 can be vertically removed from the upper surface of the filter box 4 through the embedded handle 602.

[0033] refer to Figures 3-5 As shown, several sealing gaskets 410 are installed on the filter box 4. The sealing gaskets 410 cooperate with the filter plate cover 601. After the first filter insert 6 and the second filter insert 7 are vertically installed inside the filter box 4, the sealing gaskets 410 are embedded in the lower end face of the filter plate cover 601 to complete the seal. The magnetic filter 5 is sealed by threaded connection. After the magnetic filter 5, the first filter insert 6 and the second filter insert 7 are installed on the filter box 4, the filter box 4 is sealed to avoid secondary pollution and leakage of the EDM oil in the filter box 4.

[0034] refer to Figure 6 As shown, an external filter 505 is installed on the magnetic filter 5. A permanent magnet 501 is fitted inside the external filter 505. The permanent magnet 501 attracts metal dust and metal debris inside the EDM oil, causing them to adhere to the surface of the external filter 505. One end of the permanent magnet 501 is fixedly connected to the connecting block 502. The magnetic filter 5 is provided with a fixing slot 503, which cooperates with the permanent magnet 501. By holding the connecting block 502, the permanent magnet 501 can be pulled out or inserted into the external filter 505. The fixing slot 503 limits the position of the permanent magnet 501 and prevents it from shifting due to magnetic force when inserted or removed. The permanent magnet 501 passes through the fixing slot 503 and is inserted into the external filter 505.

[0035] When the permanent magnet 501 is inserted into the external filter 505, the metal debris adsorbed on the surface of the external filter 505 remains stable and will not easily fall off. At this time, rotating the magnetic filter 5 removes it from the filter box 4, allowing the metal debris and metal dust adsorbed on the surface of the external filter 505 to be removed together. Then, the permanent magnet 501 is pulled out of the external filter 505. At this point, the magnetic attraction is lost, and the metal debris on the surface of the external filter 505 can be easily cleaned off. Simultaneously, because several magnetic filters 5 are installed, the amount of metal debris on the first filter plate 6 and the second filter plate 7 is greatly reduced. The remaining dust and carbon residue, no longer disturbed by metal debris, become easier to clean.

[0036] refer to Figure 5 As shown, the filter box 4 is provided with an observation window 403. The observation window 403 is made of transparent material. Through the observation window 403, the filtration status of the filter components in the filter box 4 can be viewed in real time, and the magnetic filter 5, the first filter plate 6 and the second filter plate 7 that need to be replaced can be identified in time. The filter can be easily replaced by vertically picking it up from the top surface of the filter box 4, so as to realize the long-term operation of the EDM equipment.

[0037] In practical use, before use, the magnetic filter 5, the first filter plate 6, and the second filter plate 7 are vertically inserted into the corresponding areas through the through holes 407 and the sockets 408, respectively. The magnetic filter 5 is installed by rotating the thread. The first filter plate 6 and the second filter plate 7 are installed by pressing the filter plate cover 601 on the upper end face, so that the filter plate cover 601 and the sealing gasket 410 are engaged. When the EDM equipment is started, the EDM oil flushes and carries carbon slag and metal debris into the filter box 4 through the oil inlet 401. The EDM oil passes through the first pair of magnetic filters 5, the first first filter plate 6, the second pair of magnetic filters 5, the second first filter plate 6, and the second filter plate 7 in the sludge chamber 405 in the filter box 4, and then enters the clean oil chamber 404 in the filter box 4 from the second filter plate 7, thus completing the filtration. Among them, the magnetic filter 5 plays the role of adsorbing metal debris and metal dust inside the EDM oil, while the first filter plate 6 and the second filter plate 7 play the role of filtering carbon residue and material inside the EDM oil. At the same time, due to the presence of the magnetic filter 5, the metal debris and metal dust adsorbed on the first filter plate 6 and the second filter plate 7 are greatly reduced, making it easier to clean the first filter plate 6 and the second filter plate 7.

[0038] Users can observe the filtration status inside the filter box 4 in real time through the observation window 403, and observe the usage of the magnetic filter 5, the first filter plate 6, and the second filter plate 7. When cleaning or replacement is required, the magnetic filter 5 can be removed by rotating it with the screw thread to separate the internal permanent magnet 501. After the permanent magnet 501 is pulled out through the fixing slot 503, the metal debris on the surface of the external filter screen 505, which loses its magnetic attraction, will be easy to clean by brushing and rinsing. The first filter plate 6 and the second filter plate 7 can be lifted vertically and pulled out using the embedded handle 602 installed on their upper surfaces. Because the placement of the magnetic filter 5 reduces the metal debris on the surfaces of the first filter plate 6 and the second filter plate 7, the first filter plate 6 and the second filter plate 7 are easier to clean.

[0039] Compared with the prior art, the beneficial effects of this utility model are that it makes the EDM oil filter inside the EDM equipment easy to disassemble and replace, reduces the adsorption of metal debris on the filter screen, and facilitates the cleaning of the filter screen.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electrical discharge machining (EDM) device, comprising a work arm, an operating table, and a machine tool, characterized in that, A filter box is installed on one side of the machine tool. The filter box has an oil inlet and an oil outlet. A filter assembly is installed inside the filter box. The filter assembly includes a magnetic filter assembly and a dust filter assembly. The magnetic filter assembly includes a magnetic filter with a permanent magnet installed inside. The dust filter assembly includes a first filter plate and a second filter plate. Embedded handles are installed on the first filter plate and the second filter plate.

2. The electrical discharge machining equipment according to claim 1, characterized in that, The upper surface of the filter box is provided with a through hole and an insertion port, and the magnetic filter and the first filter plate are respectively inserted into the filter box through the through hole and the insertion port.

3. The electrical discharge machining equipment according to claim 1, characterized in that, The first and second filter inserts are fitted with filter plate covers on their upper surfaces, and the embedded handle is installed inside the filter plate cover.

4. The electrical discharge machining equipment according to claim 1, characterized in that, The filter box is equipped with several sealing gaskets, which cooperate with the filter plate cover.

5. The electrical discharge machining equipment according to claim 1, characterized in that, The filter box has several pairs of sliding grooves fixedly connected inside, and these pairs of sliding grooves cooperate with the first filter insert plate.

6. The electrical discharge machining equipment according to claim 1, characterized in that, The filter box is equipped with a filter plate slot, which is matched with a second filter insert.

7. The electrical discharge machining equipment according to claim 1, characterized in that, The magnetic filter is threaded and is threadedly connected to the filter box.

8. The electrical discharge machining equipment according to claim 1, characterized in that, An external filter screen is installed on the magnetic filter.

9. The electrical discharge machining equipment according to claim 1, characterized in that, The magnetic filter is provided with a fixing slot, which cooperates with a permanent magnet, and the permanent magnet passes through the fixing slot and is inserted into the interior of the external filter screen.

10. An electrical discharge machining (EDM) apparatus according to claim 1, characterized in that, The filter box is equipped with an observation window.

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