Adjustable electric spark slotting device

Abstract

The utility model discloses an adjustable electric spark grooving device, include: device base, the device base is with a plurality of first electrode block with preset center annular array distribution on, first electrode block movable mounting on device base, first electrode block can be on device base along radial movable to be close to and away from preset center, drive mechanism, drive mechanism with first electrode block is connected, drive mechanism is used for driving every first electrode block radial movement to be close to preset center, drive mechanism is also used for driving every first electrode block radial movement to be away from preset center, second electrode block, the number and position of second electrode block with first motor block corresponding setting, the utility model discloses can promote the efficiency that sand wheel grooving.

Description

Technical Field

[0001] This utility model relates to the field of grinding wheel processing equipment technology, and in particular to an adjustable electric spark grooving device. Background Technology

[0002] In recent years, with the increasingly widespread use of mobile phone glass back panels by major mobile phone manufacturers, the demand for grinding wheels for thinning glass back panels has increased. During the grinding process, due to cooling and chip removal requirements, the grinding wheel cutting edge needs to be machined with evenly distributed annular chip removal grooves using electrical discharge machining. The conventional processing method in existing technology is to use an indexing base to clamp the grinding wheel and index it at the required angle, creating grooves one at a time, which is inefficient. Furthermore, the base position must be adjusted when the grinding wheel diameter changes. Utility Model Content

[0003] This invention provides an adjustable EDM grooving device, which can improve the efficiency of grinding wheel grooving.

[0004] To solve the above-mentioned technical problems, this utility model provides an adjustable electric spark grooving device, comprising:

[0005] A device base, on which a plurality of first electrode blocks are arranged in a ring array around a preset center. The first electrode blocks are movably mounted on the device base and are capable of moving radially on the device base to approach and move away from the preset center.

[0006] A driving mechanism is connected to the first electrode block. The driving mechanism is used to drive each of the first electrode blocks to move radially closer to the preset center, and the driving mechanism is also used to drive each of the first electrode blocks to move radially away from the preset center.

[0007] The number and position of the second electrode blocks correspond to those of the first electrode blocks.

[0008] As a preferred embodiment of the above technical solution, the driving mechanism includes a first bevel tooth and a second bevel tooth. The first bevel tooth is rotatably mounted on the device base and is coaxially arranged with the preset center. The second bevel tooth is correspondingly arranged with the first electrode block and meshes with the first bevel tooth.

[0009] As a preferred embodiment of the above technical solution, the driving mechanism further includes a driving screw, which is connected to the second bevel tooth and is coaxially arranged with the second bevel tooth. The first electrode block is provided with a threaded hole, and the driving screw is threadedly connected to the threaded hole.

[0010] As a preferred embodiment of the above technical solution, the device base is provided with a movable groove extending radially from the preset center, and the first electrode block is movably disposed in the movable groove.

[0011] As a preferred embodiment of the above technical solution, the first electrode block includes a first electrode substrate, a first forming part is formed at the upper end of the first electrode substrate, the shape of the first forming part corresponds to the shape of the groove of the workpiece to be processed, a T-shaped block is formed at the lower end of the first electrode substrate, the movable groove is a T-shaped groove, and the T-shaped block and the T-shaped groove are movably engaged.

[0012] As a preferred embodiment of the above technical solution, a downwardly recessed receiving space is formed at the center of the device base, the first bevel tooth is located in the receiving space, and the drive screw is rotatably mounted on the device base via a bearing.

[0013] As a preferred embodiment of the above technical solution, the adjustable EDM grooving device further includes a tooling fixture, on which the second electrode block is mounted.

[0014] As a preferred embodiment of the above technical solution, the second electrode block is detachably mounted on the tooling fixture.

[0015] As a preferred embodiment of the above technical solution, the second electrode block includes a second electrode substrate, and a second molding portion corresponding to the first molding portion is formed at the upper end of the second electrode substrate.

[0016] As a preferred embodiment of the above technical solution, the tooling fixture is provided with a plurality of U-shaped grooves arranged in a ring array. The U-shaped grooves are stepped grooves. A protrusion is provided at the lower end of the second electrode substrate. A threaded mounting hole is also formed on the second electrode substrate, passing through the protrusion. The protrusion is located in the U-shaped groove. The U-shaped groove is correspondingly arranged with the T-shaped groove. The tooling fixture is a disc. The U-shaped groove is formed on one side surface of the disc. A clamping block is provided on the other side of the disc. A locking bolt passes through the clamping block and is threadedly connected to the threaded mounting hole. A plurality of circular scale lines of different diameters are provided on the surface of the disc located on the side of the clamping block. The center of the circular scale line is consistent with the preset center.

[0017] This utility model provides an adjustable EDM grooving device, which includes a device base, a first electrode block, a second electrode block, and a drive mechanism. During processing, a grinding wheel is installed in a preset position so that the center of the grinding wheel coincides with the preset center. After the grinding wheel is installed, the second electrode blocks, arranged in a ring array, are located inside the grinding wheel and contact the inner surface of the grinding wheel. Since the first and second electrode blocks are correspondingly arranged, and multiple first electrode blocks arranged in a ring array are movably arranged on the device base, the drive mechanism drives the first electrode blocks to move radially and approach the grinding wheel until they contact the outer surface of the grinding wheel. Due to the corresponding arrangement of the first and second electrode blocks, the corresponding chip removal grooves can be cut on the grinding wheel through the joint action of the first and second electrode blocks. During the grooving process, the first electrode blocks will slowly and continuously move until they penetrate the wall of the grinding wheel to form the chip removal grooves.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0019] Figure 1 A top view of an adjustable EDM grooving device in this embodiment is shown;

[0020] Figure 2 A cross-sectional view of an adjustable EDM grooving device in this embodiment is shown.

[0021] Figure 3 A schematic diagram of the mounting structure of the second electrode block in this embodiment is shown;

[0022] Figure 4 A top view of the tooling fixture in this embodiment is shown;

[0023] Figure 5 A bottom view of the tooling fixture in this embodiment is shown;

[0024] Figure 6 A cross-sectional view of the first electrode block in this embodiment is shown;

[0025] Figure 7 A cross-sectional view of the second electrode block in this embodiment is shown.

[0026] In the figure: 10, device base; 20, first electrode block; 30, second electrode block; 40, tooling fixture; 50, drive mechanism; 101, accommodating space; 102, movable groove; 201, first electrode base; 202, first forming part; 203, T-block; 301, second electrode base; 302, second forming part; 303, protrusion; 304, mounting threaded hole; 401, U-shaped groove; 402, circular scale line; 501, first bevel tooth; 502, second bevel tooth; 503, drive screw; 504, bearing. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the 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.

[0028] See Figures 1 to 6 This utility model embodiment provides an adjustable EDM grooving device, comprising:

[0029] The device base 10 has a plurality of first electrode blocks 20 arranged in a ring array around a preset center. The first electrode blocks 20 are movably mounted on the device base 10 and can move radially on the device base 10 to approach and move away from the preset center.

[0030] The driving mechanism 50 is connected to the first electrode block 20. The driving mechanism 50 is used to drive each first electrode block 20 to move radially closer to the preset center. The driving mechanism 50 is also used to drive each first electrode block 20 to move radially away from the preset center.

[0031] The number and position of the second electrode block 30 are set to correspond to those of the first electrode block.

[0032] This embodiment provides an adjustable EDM grooving device, which includes a device base 10, a first electrode block 20, a second electrode block 30, and a drive mechanism 50. During processing, the grinding wheel is installed in a preset position so that the center of the grinding wheel coincides with the preset center. After the grinding wheel is installed, the second electrode blocks 30, which are arranged in a ring array, are located on the inner side of the grinding wheel and are in contact with the inner surface of the grinding wheel. Since the first electrode blocks 20 and the second electrode blocks 30 are correspondingly arranged, and the multiple first electrode blocks 20 arranged in a ring array are movably arranged on the device base 10, the drive mechanism 50 drives the first electrode blocks 20 to move radially and approach the grinding wheel until they contact the outer surface of the grinding wheel. Since the first electrode blocks 20 and the second electrode blocks 30 are correspondingly arranged, the corresponding chip removal grooves can be cut on the grinding wheel through the joint action of the first electrode blocks 20 and the second electrode blocks 30. During the grooving process, the first electrode blocks 20 will slowly and continuously move until they penetrate the wall of the grinding wheel to form the chip removal grooves.

[0033] In a further embodiment of this invention, the drive mechanism 50 includes a first bevel tooth 501 and a second bevel tooth 502. The first bevel tooth 501 is rotatably mounted on the device base 10 and is coaxially arranged with a preset center. The second bevel tooth 502 is correspondingly arranged with the first electrode block 20 and meshes with the first bevel tooth 501.

[0034] In a further embodiment of this invention, the drive mechanism 50 further includes a drive screw 503, which is connected to the second bevel tooth 502 and is coaxially arranged with the second bevel tooth 502. The first electrode block 20 is provided with a threaded hole, and the drive screw 503 is threadedly connected to the threaded hole.

[0035] In this embodiment, during operation, the rotation of the first bevel tooth 501 simultaneously drives the rotation of all the second bevel teeth 502. The second bevel teeth 502 drive the drive screw 503 connected to them to rotate. Since the first electrode block 20 is provided with a threaded hole, the drive screw 503 is threadedly connected to the threaded hole. The forward and reverse rotation of the first bevel tooth 501 can drive the second bevel tooth 502 to rotate forward and reverse, and the forward and reverse rotation of the second bevel tooth 502 can drive the drive screw 503 to rotate forward and reverse. The forward and reverse rotation of the drive screw 503 can drive the first electrode block 20 to move radially closer to and away from the preset center.

[0036] In a further embodiment of this invention, the device base 10 is provided with a movable groove 102 extending radially around a preset center, and the first electrode block 20 is movably disposed in the movable groove 102.

[0037] In a further embodiment of this invention, the first electrode block 20 includes a first electrode substrate 201. A first forming part 202 is formed at the upper end of the first electrode substrate 201. The shape of the first forming part 202 corresponds to the shape of the slot in the workpiece to be processed. A T-shaped block 203 is formed at the lower end of the first electrode substrate 201. The movable groove 102 is a T-shaped groove. The T-shaped block 203 and the T-shaped groove are movably engaged.

[0038] In a further embodiment of this invention, a recessed receiving space 101 is formed at the center of the device base 10, the first bevel tooth 501 is located in the receiving space 101, and the drive screw 503 is rotatably mounted on the device base 10 via the bearing 504.

[0039] In this embodiment, the first bevel tooth 501 is installed in the downwardly recessed receiving space 101, which not only saves space and makes the overall structure more compact, but also the movable groove 102 in this embodiment is set on the top surface of the device base 10, making its overall layout more reasonable and facilitating the meshing of the first bevel tooth 501 and the second bevel tooth 502.

[0040] In a further embodiment of this invention, the adjustable EDM grooving device further includes a tooling fixture 40, on which the second electrode block 30 is mounted.

[0041] In a further embodiment of this invention, the second electrode block 30 is detachably mounted on the tooling fixture 40.

[0042] In a further embodiment of this invention, the second electrode block 30 includes a second electrode substrate 301, and a second molding portion 302 corresponding to the first molding portion 202 is formed at the upper end of the second electrode substrate 301.

[0043] In a further embodiment of this invention, the tooling fixture 40 is provided with a plurality of U-shaped grooves 401 arranged in a ring array. The U-shaped grooves 401 are stepped grooves. The lower end of the second electrode base 301 is provided with a protrusion 303. The second electrode base 301 is also provided with a mounting threaded hole 304 passing through the protrusion 303. The protrusion 303 is located in the U-shaped groove 401. The U-shaped groove 401 is provided in correspondence with the T-shaped groove. The tooling fixture 40 is a disc body. The U-shaped groove 401 is formed on one side surface of the disc body. A clamping block (not shown in the figure) is provided on the other side of the disc body. A locking bolt (not shown in the figure) passes through the clamping block and is threadedly connected to the mounting threaded hole 304. The surface of the disc body located on one side of the clamping block is provided with a plurality of circular scale lines 402 of different diameters. The center of the circular scale line 402 is consistent with the preset center.

[0044] In this embodiment, the grinding wheel is installed on the second electrode block 30 during the positioning installation. Specifically, the second electrode block 30 can be installed at the position of the tooling fixture 40, so that the second electrode block 30 contacts the inner wall of the grinding wheel, thereby tensioning the grinding wheel and positioning it. The circular scale line 402 facilitates the installation of the second electrode block 30.

[0045] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An adjustable electrical discharge grooving device, characterized in that, include: A device base, on which a plurality of first electrode blocks are arranged in a ring array around a preset center. The first electrode blocks are movably mounted on the device base and are capable of moving radially on the device base to approach and move away from the preset center. A driving mechanism is connected to the first electrode block. The driving mechanism is used to drive each of the first electrode blocks to move radially closer to the preset center, and the driving mechanism is also used to drive each of the first electrode blocks to move radially away from the preset center. The number and position of the second electrode blocks correspond to those of the first electrode blocks.

2. The adjustable EDM grooving device according to claim 1, characterized in that, The driving mechanism includes a first bevel tooth and a second bevel tooth. The first bevel tooth is rotatably mounted on the device base and is coaxially arranged with the preset center. The second bevel tooth is correspondingly arranged with the first electrode block and meshes with the first bevel tooth.

3. The adjustable EDM grooving device according to claim 2, characterized in that, The driving mechanism further includes a driving screw, which is connected to the second bevel tooth and is coaxially arranged with the second bevel tooth. The first electrode block is provided with a threaded hole, and the driving screw is threadedly connected to the threaded hole.

4. The adjustable EDM grooving device according to claim 1, characterized in that, The device base is provided with a movable groove extending radially from the preset center, and the first electrode block is movably disposed in the movable groove.

5. The adjustable EDM grooving device according to claim 4, characterized in that, The first electrode block includes a first electrode substrate, a first forming part is formed at the upper end of the first electrode substrate, the shape of the first forming part corresponds to the shape of the groove of the workpiece to be processed, a T-shaped block is formed at the lower end of the first electrode substrate, the movable groove is a T-shaped groove, and the T-shaped block and the T-shaped groove are movably engaged.

6. The adjustable EDM grooving device according to claim 3, characterized in that, A recessed receiving space is formed at the center of the device base, the first bevel tooth is located in the receiving space, and the drive screw is rotatably mounted on the device base via a bearing.

7. The adjustable EDM grooving device according to claim 5, characterized in that, The adjustable EDM grooving device also includes a tooling fixture, on which the second electrode block is mounted.

8. The adjustable EDM grooving device according to claim 7, characterized in that, The second electrode block is detachably mounted on the tooling fixture.

9. The adjustable EDM grooving device according to claim 8, characterized in that, The second electrode block includes a second electrode substrate, and a second molding portion corresponding to the first molding portion is formed at the upper end of the second electrode substrate.

10. The adjustable EDM grooving device according to claim 9, characterized in that, The tooling fixture has a ring array of multiple U-shaped grooves, which are stepped grooves. A protrusion is provided at the lower end of the second electrode substrate. A threaded mounting hole is also formed on the second electrode substrate, passing through the protrusion. The protrusion is located in the U-shaped groove. The U-shaped groove is correspondingly arranged with the T-shaped groove. The tooling fixture is a disc. The U-shaped groove is formed on one side surface of the disc. A clamping block is provided on the other side of the disc. A locking bolt passes through the clamping block and is threadedly connected to the threaded mounting hole. A number of circular scale lines of different diameters are provided on the surface of the disc located on the side of the clamping block. The center of the circular scale line is consistent with the preset center.

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