Wire cut electrical discharge machining workbench

Abstract

The utility model discloses a wire cut electrical discharge machining workbench, and relates to the technical field of mechanical cutting. A movable seat is mounted at the output end of the air cylinder; a cutting machine is mounted on the bottom surface of the movable seat; a fastening mechanism is mounted on one side of the main frame; a pool body is fixedly connected to one side of the bottom of the main frame; a cutting line is fixedly connected between the cutting machine and the wire holder, and the cutting line is connected to one side of the cutting machine through a fastening mechanism. According to the utility model, the cutting table is placed in the deionized water environment for cutting the cutting piece, the flatness of the cutting surface is improved in a manner of extinguishing electric sparks in time, and the tension of the cutting line is adjusted in advance, so that the flatness of the cutting surface is improved in a manner of maintaining the cutting stability of the cutting line.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical cutting technology, and specifically relates to an electrical discharge wire cutting worktable. Background Technology

[0002] Electrical discharge wire cutting is a precision machining technology that uses pulsed discharge between an electrode wire and a workpiece to corrode the material. By applying high-frequency current to the copper wire through a pulsed power supply, high temperature is generated to cut the material. It is often used for machining materials with high precision requirements and high hardness, and is widely used in mold manufacturing, aerospace, medical devices and scientific research. A corresponding cutting table is required during the cutting process.

[0003] The patent specification with announcement number CN213672301 U discloses an electrical discharge wire cutting machine tool, including a worktable. Two sets of power side frames are fixedly connected to the top of the worktable and near the front side. A power roller is movably connected between the two sets of power side frames. A drive motor is fixedly connected to the outer side of one of the power side frames. The output end of the drive motor passes through the power side frame and is connected to the power roller for transmission. A first bracket is fixedly connected to the upper surface of the worktable and near the power roller. A first upper guide wheel is fixedly connected to the top of the first bracket. A second bracket is fixedly connected to the upper surface of the worktable and on the opposite side of the first bracket. A second upper guide wheel is fixedly connected to the top of the second bracket.

[0004] The shortcomings of this technical solution are as follows: when the cutting device is in use, the cutting wire is installed between the first and second supports. However, the cutting wire is not securely fastened when passing through the guide rollers on both sides, resulting in insufficient stability of the copper wire during electric cutting, which affects the flatness of the cut surface. Secondly, the cutting position of the machine tool is exposed. However, the electric discharge cutting machine will generate a high-temperature cut surface during cutting. When the cut surface is at a high temperature and is not cooled, local metal melting will occur on the cut surface, resulting in poor flatness of the cut surface.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] The purpose of this utility model is to provide an electrical discharge wire cutting workbench, and the technical problem to be solved is as follows: the existing electrical discharge cutting workbench has poor surface flatness due to the low tightness of the cut copper wire and the lack of cutting surface cooling.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] An electrical discharge wire cutting workbench includes a main frame, a cylinder mounted on one side of the top of the main frame, a movable base mounted on the output end of the cylinder, a cutting machine mounted on the bottom surface of the movable base, a fastening mechanism mounted on one side of the main frame, a pool body fixedly connected to one side of the bottom of the main frame, a terminal block mounted on the bottom of the pool body, a cutting table mounted in the middle of the main frame, a cutting wire fixedly connected between the cutting machine and the terminal block, and the cutting wire being connected to one side of the cutting machine by the fastening mechanism, the fastening mechanism being used to adjust the tension value of the cutting wire.

[0009] As a further embodiment of this utility model: a slide table is provided on the side of the main frame near the movable seat, and one side of the movable seat is slidably connected to the slide table. The cutting table includes a support plate fixedly connected to the bottom of the slide table. A wire passage is provided in the middle of the support plate. A chuck is fixedly connected to the top of the support plate. Multiple locking strips are evenly slidably connected to the chuck along its circumferential side, and a cutting component is engaged between each locking strip.

[0010] As a further embodiment of this utility model: the height of the top of the chuck is lower than the height of the top of the pool body, and the terminal block is located directly below the cutting machine.

[0011] As a further embodiment of this utility model: the fastening mechanism includes a side plate, two slide bars are installed on one side of the side plate, an adjustment platform is slidably connected between the top ends of the two slide bars, a screw is installed in the middle of the side plate, the screw is parallel to the slide bars, and one end of the screw is connected to a motor, and the screw is threadedly connected to the inner side of the adjustment platform.

[0012] As a further embodiment of this utility model: an inlet guide wheel is installed on one side of the top of the adjustment platform, and an outlet guide wheel is installed on the side closer to the cutting machine. An adjustment wheel is installed on one side of the adjustment platform, and a central rotating wheel is installed on one side of the main frame. The cutting wire is connected in sequence to the inlet guide wheel, the adjustment wheel, the outlet guide wheel, the central rotating wheel, and the cutting machine.

[0013] As a further embodiment of this utility model: a tension gauge is installed on one side of the adjusting wheel, a display screen is provided on one side of the tension gauge, and the measuring end is connected to the cutting line.

[0014] The beneficial effects of this utility model are:

[0015] By installing a fastening mechanism on one side of the main frame, the adjusting wheel between the inlet guide wheel and the outlet guide wheel is adjusted by the fastening mechanism before the cutting wire is connected to the cutting machine and the terminal block. This pre-adjusts the tension of the cutting wire, so that the cutting wire remains taut and not easily broken during cutting. In other words, the function of flat cutting of the cutting surface of the workpiece is achieved by adjusting the tension value of the cutting wire.

[0016] By installing the cutting table inside the pool and installing a cutting line between the terminal block at the bottom of the pool and the cutting machine, the cutting parts on the cutting table are immersed in the deionized water in the pool during cutting. This allows the electric sparks to be extinguished in time during cutting, thus preventing the high-temperature electric sparks from continuously melting the cutting surface. In other words, the flatness of the cutting surface is improved by extinguishing the electric sparks after the cutting is completed in time. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the structure of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the fastening mechanism of this utility model;

[0021] Figure 4 This is a utility model Figure 3 Enlarged detail view of point A in the middle;

[0022] Figure 5 This is a partial sectional bottom view of this utility model.

[0023] In the diagram: 1. Main frame; 2. Cylinder; 3. Moving seat; 4. Cutting machine; 5. Fastening mechanism; 51. Side plate; 52. Slide bar; 53. Adjusting table; 54. Screw; 55. Motor; 56. Inlet guide wheel; 57. Outlet guide wheel; 58. Adjusting wheel; 59. Central rotating wheel; 6. Pool body; 7. Terminal block; 8. Cutting table; 9. Cutting wire; 10. Power supply compartment; 11. Pulse power supply; 12. Cutting part; 13. Slide table; 14. Support plate; 15. Wire passage; 16. Chuck; 17. Clamping bar; 18. Tension gauge. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] like Figures 1 to 5As shown, an electrical discharge wire cutting workbench includes a main frame 1, a cylinder 2 installed on one side of the top of the main frame 1, a movable seat 3 installed at the output end of the cylinder 2, a cutting machine 4 installed on the bottom surface of the movable seat 3, a fastening mechanism 5 installed on one side of the main frame 1, a pool body 6 fixedly connected to one side of the bottom of the main frame 1, a terminal block 7 installed at the bottom inside the pool body 6, a cutting table 8 installed in the middle of the main frame 1, a cutting wire 9 fixedly connected between the cutting machine 4 and the terminal block 7, and the cutting wire 9 being connected to one side of the cutting machine 4 by the fastening mechanism 5, the fastening mechanism 5 being used to adjust the tension value of the cutting wire 9;

[0026] It should be noted that the main frame 1 has an L-shaped side. The power supply compartment 10 is set at the top of the side of the main frame 1 away from the pool body 6. The power supply compartment 10 is equipped with a pulse power supply 11, which is electrically connected to the cutting machine 4. The cutting wire 9 is a copper wire. The cutting piece 12 is locked in the middle of the cutting table 8. During the cutting process, a cutting hole with a diameter larger than that of the cutting wire 9 is drilled in the cutting piece 12. Then, the cutting wire 9 is installed between the bottom chuck of the cutting machine 4 and the top chuck of the terminal block 7. Under the high-frequency power of the pulse power supply 11, the cutting wire 9 acts as an electrode and generates a large number of instantaneous high-temperature electric sparks between itself and the conductive metal cutting piece 12 due to pulse discharge, thereby melting the cut surface of the cutting piece 12 and realizing the cutting function of the metal cutting piece 12.

[0027] like Figure 3 and Figure 5 As shown, a slide table 13 is provided on the side of the main frame 1 near the movable seat 3. The movable seat 3 is slidably connected to the slide table 13. The cutting table 8 includes a support plate 14 fixedly connected to the bottom of the slide table 13. A wire passage 15 is provided in the middle of the support plate 14. A chuck 16 is fixedly connected to the top of the support plate 14. Four locking strips 17 are evenly slidably connected to the chuck 16 along its circumferential side. The cutting piece 12 is locked between each locking strip 17.

[0028] It should be noted that the horizontal cross section of the slide table 13 is T-shaped. The movable seat 3 is provided with a locking block corresponding to the limiting grooves on both sides of the slide table 13 and is locked to it. This is used to limit the movement position of the movable seat 3 when the cylinder 2 pushes and pulls it, thereby improving the cutting accuracy. The wire passage 15 provided in the middle of the support plate 14 is used to pass through the cutting line 9 and cutting debris. The four locking strips 17 installed on the periphery of the chuck 16 are pushed and pulled by the robotic arm (not shown) during the operation, so as to move the relative position between each locking strip 17 to realize the displacement of the cutting part 12, thereby cutting out the target shape.

[0029] The top of the chuck 16 is lower than the top of the pool body 6, and the terminal block 7 is located directly below the cutting machine 4;

[0030] It should be noted that since the cutting wire 9 is made of copper wire, when the pulse power supply 11 is energized at high frequency, a large number of high-temperature electric sparks are generated between it and the conductive cutting part 12. These electric sparks can melt the cutting part 12 and continue to act on the cutting surface. In order to avoid the electric sparks causing melting and deformation of the cutting surface, the cutting table 8 is installed inside the pool body 6. During operation, the pool body 6 is filled with deionized water or oil-based liquid that covers the top surface of the cutting part 12. Since this type of liquid is non-conductive, it can quickly and safely extinguish the electric sparks on the cutting surface after the electric spark cutting is completed, thereby achieving the function of maintaining the flatness of the cutting surface by timely extinguishing the electric sparks.

[0031] like Figures 2 to 4 As shown, the fastening mechanism 5 includes a side plate 51, two slide bars 52 are installed on one side of the side plate 51, and an adjustment platform 53 is slidably connected between the top ends of the two slide bars 52. A screw 54 is installed in the middle of the side plate 51 between the two slide bars 52. The screw 54 is parallel to the slide bars 52 and one end is connected to a motor 55. The screw 54 is threadedly connected to the inner side of the adjustment platform 53.

[0032] An inlet guide wheel 56 is installed on one side of the top of the adjustment table 53, an outlet guide wheel 57 is installed on the side near the cutting machine 4, an adjustment wheel 58 is installed on one side of the adjustment table 53, and a central rotating wheel 59 is installed on one side of the main frame 1. The cutting wire 9 is connected to the inlet guide wheel 56, the adjustment wheel 58, the outlet guide wheel 57, the central rotating wheel 59 and the cutting machine 4 in sequence.

[0033] A tension gauge 18 is installed on one side of the adjustment wheel 58, and a display screen is set on one side of the tension gauge 18. The force measuring end is connected to the cutting line 9.

[0034] It should be noted that the tension value of the cutting wire 9 during the cutting process directly affects the cutting stability. When the tension of the cutting wire 9 is small, high-frequency vibration is likely to occur during the cutting process, affecting the regularity of the cut surface. When the tension of the cutting wire 9 is large, it is likely to break during the cutting process. Therefore, it is necessary to keep the cutting wire 9 in a taut state with high tension and low breakage during the cutting process. When the wire is led in, the rotation of the output end of the motor 55 drives the screw 54 to rotate. The adjustment table 53, which is threaded to the screw 54, moves along the vertical plane under the limiting action of the two slide bars 52. The vertical distance between the adjustment wheel 58 and the wire inlet guide wheel 56 and the wire outlet guide wheel 57 changes, thereby realizing the function of adjusting the tension value of the cutting wire 9. The tension value can be directly obtained from the display screen of the digital tension gauge 18. The cutting wire 9 with the adjusted tension is transported to the cutting machine 4 along the central rotating wheel 59, thereby realizing the function of stabilizing the flatness of the cut surface by adjusting the tension value of the cutting wire 9.

[0035] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An electrical discharge wire cutting workbench, comprising a main frame (1), wherein a cylinder (2) is mounted on one side of the top of the main frame (1), a movable base (3) is mounted on the output end of the cylinder (2), and a cutting machine (4) is mounted on the bottom surface of the movable base (3), characterized in that, A fastening mechanism (5) is installed on one side of the main frame (1). A pool body (6) is fixedly connected to one side of the bottom of the main frame (1). A terminal block (7) is installed at the bottom of the pool body (6). A cutting table (8) is installed in the middle of the main frame (1). A cutting wire (9) is fixedly connected between the cutting machine (4) and the terminal block (7). The cutting wire (9) is connected to one side of the cutting machine (4) by the fastening mechanism (5). The fastening mechanism (5) is used to adjust the tension value of the cutting wire (9).

2. The wire electrical discharge machining (EDM) worktable according to claim 1, characterized in that, The main frame (1) is provided with a slide table (13) on one side near the movable seat (3). The movable seat (3) is slidably connected to the slide table (13) on one side. The cutting table (8) includes a support plate (14) fixedly connected to the bottom of the slide table (13). The support plate (14) is provided with a wire passage (15) in the middle. The top of the support plate (14) is fixedly connected to a chuck (16). The chuck (16) is slidably connected with multiple clips (17) along its circumferential side. A cutting piece (12) is engaged between each clip (17).

3. The wire electrical discharge machining (EDM) worktable according to claim 2, characterized in that, The top of the chuck (16) is lower than the top of the pool body (6), and the terminal block (7) is located directly below the cutting machine (4).

4. The wire electrical discharge machining (EDM) worktable according to claim 1, characterized in that, The fastening mechanism (5) includes a side plate (51), on one side of which two slide bars (52) are installed. An adjustment platform (53) is slidably connected between the top ends of the two slide bars (52). A screw (54) is installed in the middle of the side plate (51). The screw (54) is parallel to the slide bars (52) and one end is connected to a motor (55). The screw (54) is threadedly connected to the inner side of the adjustment platform (53).

5. The wire electrical discharge machining (EDM) worktable according to claim 4, characterized in that, The adjusting platform (53) has an inlet guide wheel (56) installed on one side of its top, and an outlet guide wheel (57) installed on the side close to the cutting machine (4). The adjusting platform (53) has an adjusting wheel (58) installed on one side, and the main frame (1) has a central rotating wheel (59) installed on one side. The cutting line (9) is connected in sequence to the inlet guide wheel (56), the adjusting wheel (58), the outlet guide wheel (57), the central rotating wheel (59), and the cutting machine (4).

6. The wire electrical discharge machining (EDM) worktable according to claim 5, characterized in that, A tension gauge (18) is installed on one side of the adjustment wheel (58), and a display screen is provided on one side of the tension gauge (18), and the measuring end is connected to the cutting line (9).

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