Three-dimensional electrode for machining tunnel

Abstract

The utility model discloses a three-dimensional electrode for processing a tunnel, which relates to the field of die electrode design and processing, and comprises a discharge part, an extension piece, a first discharge surface and a second discharge surface, the discharge part comprises a first step plate, and the extension piece is connected with the discharge part. During use, the electrode is inserted into a workpiece through a spark machine, and the electrode is fed and machined to a specified depth value in the depth direction Z; the improved direction is changed, the electrode is fed and machined in the X direction, and a first tunnel is manufactured; the improved direction is changed, the electrode is fed and machined in the direction away from the first tunnel, and a second tunnel is manufactured; when the electrode is used for machining a workpiece, the position of the workpiece does not need to be adjusted for multiple times, the problem of tolerance accumulation and out-of-tolerance is avoided, and the calibration time is saved; obvious connecting marks or steps are prevented from appearing at the overlapping positions of the multiple electrodes on the workpiece, and the machining quality of the workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the field of mold electrode design and processing, and particularly relates to a three-dimensional electrode for processing tunnels. Background Art

[0002] When a mold structure with two-way inner cores is required to solve the problem of undercuts in the demolding direction of plastic products, two-way tunnels will also be generated in the mold core, as Figure 1 shown; the tunnels on the mold core are generally completed by electrical discharge machining. Generally, the following method is adopted:

[0003] First, use electrode A to feed and machine into the workpiece along the Z-axis direction;

[0004] Then, rotate the workpiece counterclockwise by 90°, so that the original right side of the workpiece faces up, and then use electrode B to machine the undercut tunnel part by feeding in the Z direction;

[0005] Finally, rotate the workpiece clockwise by 180°, so that the original left side of the workpiece faces up, and then use electrode C to machine the undercut tunnel part by feeding in the Z direction.

[0006] However, the existing method for processing tunnels has the following defects:

[0007] First, there is a problem of cumulative tolerance exceeding the standard in multi-station machining, which will affect the accuracy;

[0008] Second, for multiple electrical discharges, the method of stacking ordinary electrodes is prone to obvious joints or steps at the overlapping parts of the electrodes (such as Figure 1 D in the figure). For areas that need to slide frequently, the existence of steps means that it is easy to cause friction and burning, which is not conducive to the stability and continuous productivity of the mold;

[0009] Third, multiple stations are used for machining, which consumes more time for loading and unloading parts and calibrating parts, resulting in low efficiency. Summary of the Utility Model

[0010] The purpose of the utility model is to provide a three-dimensional electrode for processing tunnels, which is used to solve the technical problem of how to design a two-way undercut structure on one electrode and complete the processing of two-way tunnels through one electrode in the prior art.

[0011] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0012] A three-dimensional electrode for processing tunnels, comprising:

[0013] A discharge part, the discharge part includes a first stepped plate, and a first undercut and a second undercut are arranged on the first stepped plate;

[0014] An extension part, which is connected to the discharge part;

[0015] A first discharge surface, arranged on the discharge portion;

[0016] The second discharge surface is arranged on the discharge portion and the extension piece.

[0017] Preferably, the discharge unit further includes:

[0018] A second step plate, wherein the second step plate is connected to an end of the first step plate away from the first undercut and the second undercut.

[0019] Preferably, the discharge unit further includes:

[0020] The third step plate is connected to an end of the second step plate away from the first step plate.

[0021] Preferably, a reference angle is provided on the extension member.

[0022] Preferably, the discharge portion and the extension piece are both provided with a countersunk head and a through hole, and the countersunk head and the through hole are connected.

[0023] Preferably, the length of the first step plate is 36.5 mm-37.5 mm, and the thickness of the first step plate is 5 mm-5.5 mm.

[0024] Preferably, the length of the second step plate is 12.5 mm-13.5 mm, and the thickness of the second step plate is 10 mm-11 mm.

[0025] Preferably, the length of the third step plate is 16mm-17mm, and the thickness of the third step plate (113) is 18mm-19mm.

[0026] Preferably, the first undercut and the second undercut are arranged oppositely on two sides of the first step plate.

[0027] Preferably, along the length direction of the three-dimensional electrode, the length of the first undercut is smaller than the length of the second undercut.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0029] In the present utility model, the electrode is provided with a discharge part, a first reverse buckle, a second reverse buckle and an extension part. During use, the electrode is inserted into the workpiece by a spark machine, and the electrode is fed in the depth direction Z to a specified depth value; then the feeding direction is changed, and the electrode is fed in the X direction to produce a first tunnel; then the feeding direction is changed again, and the electrode is fed in a direction away from the first tunnel to produce a second tunnel. When using this electrode to process the workpiece, there is no need to adjust the position of the workpiece multiple times, avoiding the problem of tolerance accumulation exceeding the standard and saving the calibration time; it also avoids obvious seams or steps at the overlapping parts of multiple electrodes on the workpiece, improving the processing quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the traditional processing method in the background technology of the present utility model, and the arrow Z in the figure indicates the movement direction of the electrode;

[0031] Figure 2 is a three-dimensional view of the electrode in the present utility model Figure 1 ;

[0032] Figure 3 is a position diagram of the first discharge surface and the second discharge surface of the electrode in the present utility model;

[0033] Figure 4 is the processing step of the electrode in the present utility model Figure 1 ;

[0034] Figure 5 is the processing step of the electrode in the present utility model Figure 2 ;

[0035] Figure 6 is a three-dimensional view of the electrode and the workpiece in the present utility model;

[0036] Figure 7 is a main sectional view of the electrode and the workpiece in the present utility model, and the arrows Z and X in the figure indicate the movement direction of the electrode;

[0037] Figure 8 is a sectional three-dimensional view of the electrode and the workpiece in the present utility model, and the arrows Z and X in the figure indicate the movement direction of the electrode;

[0038] Figure 9 is a sectional view of the workpiece after processing in the present utility model;

[0039] Figure 10 is a three-dimensional view of the grinding machine in the present utility model Figure 1 ;

[0040] Figure 11 is a three-dimensional view of the grinding machine in the present utility model Figure 2 ;

[0041] Figure 12 It is a three-dimensional diagram of the adjustment component in the utility model;

[0042] Reference numerals: 100, electrode; 110, discharge portion; 111, first step plate; 1111, first undercut; 1112, second undercut; 112, second step plate; 113, third step plate; 120, extension piece; 121, reference angle; 130, countersunk head; 131, through hole; 140, first discharge surface; 150, second discharge surface; 160, bottom plate; 200, fixture; 300 , workpiece; 301, first tunnel; 302, second tunnel; 400, grinding machine; 401, fixed frame; 402, sliding seat; 403, slider; 404, multi-stage electric push rod; 405, hydraulic cylinder; 406, motor; 407, grinding head; 410, mounting frame; 411, slide groove; 412, clamping block; 421, slide plate; 422, screw nut; 423, screw; 424, turntable. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0044] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0045] Example 1

[0046] like Figure 2 , Figure 3 and Figure 6 - Figure 9 As shown, a three-dimensional electrode for processing a tunnel includes a discharge portion 110 , an extension piece 120 , a first discharge surface 140 and a second discharge surface 150 .

[0047] The discharge portion 110 includes a first step plate 111, a second step plate 112 and a third step plate 113. The first step plate 111 is provided with a first undercut 1111 and a second undercut 1112. The extension piece 120 and the discharge portion 110 are integrally formed.

[0048] The second step plate 112 is connected to one end of the first step plate 111 away from the first undercut 1111 and the second undercut 1112. The third step plate 113 is connected to one end of the second step plate 112 away from the first step plate 111.

[0049] The first undercut 1111 and the second undercut 1112 are oppositely arranged on both sides of the first stepped plate 111. Along the length direction of the three-dimensional electrode, the length of the first undercut 1111 is less than that of the second undercut 1112.

[0050] The first discharge surface 140 is arranged on the discharge part 110 and is used to participate in discharging; the second discharge surface 150 is arranged on the discharge part 110 and the extension part 120. The second discharge surface 150 is not only used to participate in discharging but also has the attribute of a reference surface.

[0051] A reference angle 121 is arranged on the extension part 120. Countersinks 130 and through holes 131 are arranged on both the discharge part 110 and the extension part 120, and the countersinks 130 and the through holes 131 are communicated.

[0052] The length of the first stepped plate 111 is 36.5 mm, and the thickness of the first stepped plate 111 is 5 mm. The length of the second stepped plate 112 is 12.5 mm, and the thickness of the second stepped plate 112 is 10 mm. The length of the third stepped plate 113 is 16 mm, and the thickness of the third stepped plate 113 is 18 mm.

[0053] Working principle: When using the electrode 100 to machine the workpiece 300, as Figure 6 - Figure 9 shown, the electrode 100 is inserted into the workpiece 300 through a spark machine, and the electrode 100 is fed along the depth direction Z to a specified depth value; then, while keeping the depth value unchanged, the feeding direction is changed, and the electrode 100 is fed along the direction X for machining to produce the first tunnel 301; then, while keeping the depth value unchanged, the feeding direction is changed, and the electrode 100 is fed in a direction away from the first tunnel 301 for machining to produce the second tunnel 302.

[0054] By using the electrode 100 to machine the workpiece 300, it is not necessary to adjust the position of the workpiece 300 multiple times, avoiding the problem of tolerance accumulation exceeding the tolerance, saving the calibration time, and also avoiding obvious joints or steps at the overlapping parts of multiple electrodes on the workpiece 300, thus improving the machining quality of the workpiece 300.

[0055] Embodiment 2

[0056] As Figure 2 and Figure 3 shown, in the case where other parts are the same as those in Embodiment 1, the difference between this embodiment and Embodiment 1 is that: the length of the first stepped plate 111 is 37.5 mm, and the thickness of the first stepped plate 111 is 5.5 mm. The length of the second stepped plate 112 is 13.5 mm, and the thickness of the second stepped plate 112 is 11 mm. The length of the third stepped plate 113 is 17 mm, and the thickness of the third stepped plate 113 is 19 mm.

[0057] Example 3

[0058] As Figure 4 and Figure 5 shown, when other parts are the same as those in Example 1, the difference between this example and Example 1 lies in:

[0059] A processing method for a three-dimensional electrode for processing a tunnel, comprising the following steps:

[0060] Step 1: Select copper material with appropriate specifications and machine the electrode reference angle 121 with a milling machine;

[0061] Step 2: Use a milling machine to machine two counterbores 130 and two through holes 131 on the copper material;

[0062] Step 3: Lock the copper material blank to the clamping fixture 200 and machine the discharge part 110 through a CNC machine, leaving a bottom plate 160 with a thickness of 0.05 mm - 0.1 mm;

[0063] Step 4: Use a grinding machine 400 for machining to remove the CNC residues and the bottom plate 160 on the electrode 100.

[0064] Among them, as Figure 10 and Figure 11 shown, the above-mentioned grinding machine 400 includes a fixed frame 401, a sliding seat 402, a slider 403, a multi-stage electric push rod 404, a hydraulic cylinder 405, a motor 406, a grinding head 407, a mounting frame 410, a chute 411, two clamping blocks 412 and an adjustment component.

[0065] The sliding seat 402 is installed on the fixed frame 401; the slider 403 is slidably connected to the sliding seat 402; the multi-stage electric push rod 404 is installed in the sliding seat 402, and the extending end of the multi-stage electric push rod 404 is fixedly connected to the slider 403.

[0066] The hydraulic cylinder 405 is installed on the bottom surface of the slider 403; the motor 406 is connected to the extending end of the hydraulic cylinder 405; the grinding head 407 is installed on the power output shaft of the motor 406.

[0067] The mounting frame 410 is installed in the fixed frame 401; the chute 411 is penetrated and opened on the top surface of the mounting frame 410; both clamping blocks 412 are slidably connected to the mounting frame 410; the adjustment component is used to adjust the distance between the two clamping blocks 412.

[0068] Specifically, the adjustment component can adjust the distance between the two clamping blocks 412 so that the two clamping blocks 412 clamp and fix the electrode 100. Then, by starting the motor 406, the power output shaft of the motor 406 drives the grinding head 407 to rotate. Then, start the hydraulic cylinder 405 to drive the motor 406 and the rotating grinding head 407 to move downward, so that the grinding head 407 grinds the electrode 100. Finally, by starting the multi-stage electric push rod 404, the extending end of the multi-stage electric push rod 404 pushes the slider 403 to move, thereby driving the hydraulic cylinder 405, the motor 406 and the grinding head 407 to move, so that the grinding head 407 grinds other positions of the electrode 100.

[0069] As Figure 12 shown, the adjustment component includes two sliding plates 421, two lead screw nuts 422, a lead screw 423 and a turntable 424.

[0070] The two sliding plates 421 are respectively fixedly connected to the bottom surfaces of the two clamping blocks 412, and the two sliding plates 421 are both slidably connected to the sliding grooves 411. The two lead screw nuts 422 are respectively installed on the two sliding plates 421. The lead screw 423 passes through the two lead screw nuts 422, and the lead screw 423 is rotatably connected to the mounting bracket 410. The threads at both ends of the lead screw 423 are arranged in opposite directions. The turntable 424 is fixedly connected to the end of the lead screw 423 outside the mounting bracket 410.

[0071] Specifically, by placing the electrode 100 on the mounting bracket 410 and then rotating the turntable 424 to drive the lead screw 423 to rotate, since the threads at both ends of the lead screw 423 are arranged in opposite directions, when the lead screw 423 rotates, the two lead screw nuts 422 will move in opposite directions at the same time, thereby driving the two sliding blocks to move in opposite directions at the same time, thereby driving the two clamping plates to move, so that the two clamping plates cooperate to clamp and fix the electrode 100, thus avoiding affecting the grinding efficiency due to the movement of the electrode 100 during the grinding of the electrode 100.

[0072] By laying and locking the copper material on the fixture 200, leaving the copper material by CNC machining, and finally, through the machining of the grinding machine 400, the electrode 100 is made into a relatively thin three-dimensional electrode. Through this electrode 100, it is possible to realize the processing of two-direction tunnels in one electrode 100 in a spark machine at one time, achieving the effects of improving precision and efficiency, and overcoming the defects of poor precision and low efficiency in the traditional technical solution.

[0073] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

[0074] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to only the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A three-dimensional electrode for processing tunnels, characterized in that: include: A discharge portion (110), the discharge portion (110) comprising a first step plate (111), the first step plate (111) being provided with a first undercut (1111) and a second undercut (1112); An extension piece (120) connected to the discharge portion (110); A first discharge surface (140) is arranged on the discharge portion (110); The second discharge surface (150) is arranged on the discharge portion (110) and the extension piece (120).

2. The three-dimensional electrode for processing tunnel according to claim 1, characterized in that: The discharge unit (110) further includes: A second step plate (112), the second step plate (112) being connected to an end of the first step plate (111) away from the first undercut (1111) and the second undercut (1112).

3. The three-dimensional electrode for processing tunnel according to claim 2, characterized in that: The discharge unit (110) further includes: The third step plate (113) is connected to an end of the second step plate (112) away from the first step plate (111).

4. The three-dimensional electrode for processing tunnels according to claim 2, characterized in that: The extension piece (120) is provided with a reference angle (121).

5. The three-dimensional electrode for processing tunnel according to claim 1, characterized in that: The discharge portion (110) and the extension piece (120) are both provided with a countersunk head (130) and a through hole (131), and the countersunk head (130) and the through hole (131) are in communication.

6. The three-dimensional electrode for processing tunnel according to claim 1, characterized in that: The length of the first step plate (111) is 36.5 mm-37.5 mm, and the thickness of the first step plate (111) is 5 mm-5.5 mm.

7. The three-dimensional electrode for processing tunnel according to claim 2, characterized in that: The length of the second step plate (112) is 12.5 mm-13.5 mm, and the thickness of the second step plate (112) is 10 mm-11 mm.

8. The three-dimensional electrode for processing tunnels according to claim 3, characterized in that: The length of the third step plate (113) is 16 mm-17 mm, and the thickness of the third step plate (113) is 18 mm-19 mm.

9. The three-dimensional electrode for processing tunnels according to claim 1, characterized in that: The first undercut (1111) and the second undercut (1112) are arranged oppositely on two sides of the first step plate (111).

10. The three-dimensional electrode for processing tunnels according to claim 9, characterized in that: Along the length direction of the three-dimensional electrode, the length of the first undercut (1111) is smaller than the length of the second undercut (1112).

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