Wire cutting medium-speed wire cutting machine tool

Abstract

The utility model relates to the technical field of linear cutting machine tools, and discloses a linear cutting medium wire feeding machine tool which comprises a machine tool body and a wire holder, a cooling liquid tank is arranged at the front end of the wire holder, an electrode wire movably penetrates through the cooling liquid tank, a spray head unit is arranged below the cooling liquid tank, and a driving unit is arranged between the spray head unit and the cooling liquid tank. The spray head unit comprises a spray head body, an angle adjusting unit and an assembling frame, and the angle adjusting unit comprises an arc-shaped plate and a shaft rod; the driving unit comprises a circular ring and a flywheel gear ring. When the electrode wire is cut, cooling liquid flows down along the electrode wire to cool the electrode wire, the situation that the cooling liquid does not fully flow in the cut seam possibly exists, and the situation that secondary discharge is caused by accumulation of discharge products possibly exists, the flowing direction of the cooling liquid can be changed by arranging the two sets of spray head units, and it is ensured that the cooling liquid in the cut seam fully flows; and by arranging the driving unit, rotation of the spray head unit is achieved, and the requirement for cutting in different directions is met.

Description

Technical Field

[0001] This utility model relates to the field of wire EDM machine tool technology, and in particular to a wire EDM wire feeding machine tool. Background Technology

[0002] Medium-speed wire EDM uses a moving metal wire as a tool electrode and generates a discharge in the gap between the wire electrode and the workpiece, thereby machining the workpiece into the desired shape.

[0003] The prior art discloses a wire EDM machine tool (publication number: CN117655439B), which has a bed. The top wall of the bed along the direction of gravity is fixedly provided with a column and a wire feeding assembly. The column is provided with an X-axis, a Y-axis and a Z-axis along the length, width and height directions, respectively. The top wall of the bed is fixedly provided with a workpiece support assembly. On the side of the workpiece support assembly near the bed, an X-axis transmission assembly for driving the workpiece support assembly to move along the X-axis direction and a Y-axis transmission assembly for moving along the Y-axis direction are fixedly provided.

[0004] In the current online cutting process, the coolant flows down the electrode wire to cool it. However, there may be cases where the coolant does not flow sufficiently in the cut, which may cause the accumulation of discharge products and lead to secondary discharge, thus affecting product quality.

[0005] Therefore, those skilled in the art have provided a wire EDM machine tool. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a wire EDM machine tool that solves the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A wire EDM machine includes a machine body and a wire frame. A coolant tank is located at the front end of the wire frame, through which the electrode wire moves. A nozzle unit for cooling the electrode wire is located below the coolant tank. A drive unit for rotating the nozzle unit is located between the nozzle unit and the coolant tank. A servo motor is fixedly mounted on one outer wall of the coolant tank. The nozzle unit includes a nozzle body, an angle adjustment unit, and an assembly frame. A miniature drive motor is fixedly mounted inside the cavity of the assembly frame. The angle adjustment unit includes an arc plate and a shaft. Rotation of the shaft causes the arc plate and the nozzle body to rotate synchronously. The drive unit includes a ring and a flywheel gear ring. The flywheel gear ring is fixedly mounted on the outer wall of the ring. During rotation, the flywheel gear ring drives two sets of nozzle units below to rotate.

[0009] According to the wire EDM machine tool, a coolant inlet pipe is provided in the coolant tank cavity, and a liquid delivery pipe is connected between the coolant inlet pipe and the nozzle body. An arc plate is fixedly installed on the top of the nozzle body, and there are two sets of arc plates. A shaft is fixedly installed between the two sets of arc plates.

[0010] According to the wire cutting machine tool, the shaft is fixedly connected to a first helical gear, and the output shaft of the micro drive motor is fixedly connected to a second helical gear, which meshes with the first helical gear.

[0011] According to the wire EDM machine tool, arc-shaped limiting strips are fixedly installed on the side of the two sets of arc plates that are far apart from each other, and limiting frames are fixedly installed on the outer wall of the assembly frame, with the arc-shaped limiting strips moving through the corresponding limiting frames.

[0012] According to the wire EDM machine tool, two sets of assembly frames are fixedly installed at the bottom end of the ring, and the two sets of assembly frames are symmetrical.

[0013] According to the wire EDM machine tool, the drive unit further includes a drive gear, the output shaft of the servo motor is fixedly connected to the drive shaft, the other end of the drive shaft is fixedly connected to the drive gear, and the drive gear is movably meshed with the flywheel gear ring.

[0014] According to the wire cutting machine tool, the inner wall of the ring is provided with a sliding groove, and multiple sets of locking blocks are fixedly installed at the bottom of the coolant tank. The locking blocks are L-shaped and arranged in a ring array. One end of the locking block is movably locked in the sliding groove.

[0015] This utility model provides a wire EDM machine tool. It has the following advantages:

[0016] (1) During the online cutting process, the coolant flows down along the electrode wire to cool the electrode wire. There may be a situation where the coolant does not flow sufficiently in the cut, which may cause the discharge products to accumulate and lead to secondary discharge, affecting the product quality. This application can change the flow direction of the coolant by setting two sets of nozzle units to ensure that the coolant flows sufficiently in the cut. The nozzle units can be rotated by setting a drive unit to meet the needs of cutting in different directions.

[0017] (2) A coolant inlet pipe is provided in the coolant tank cavity, and a delivery pipe is connected between the coolant inlet pipe and the nozzle body. The coolant enters the nozzle unit from the delivery pipe and is sprayed out. The nozzle unit is set to be flat so that the coolant is sprayed out in a flat line shape, which makes it easy for the coolant to enter the cut and ensures that the coolant in the cut flows fully.

[0018] (3) Two sets of arc plates are fixedly installed on opposite sides. A limit frame is fixedly installed on the outer wall of the assembly frame. The arc limit strip moves through the corresponding limit frame. The limit frame hooks the lower arc plate and the nozzle body through the arc limit strip. Two sets of assembly frames are fixedly installed at the bottom of the ring. The two sets of assembly frames are symmetrical. The ring rotates and drives the assembly frame to rotate synchronously. The drive gear is set to mesh with the flywheel gear ring. The flywheel gear ring is fixedly installed on the outer wall of the ring. When the servo motor is working, it drives the drive gear to rotate through the drive shaft. The flywheel gear ring and the ring rotate and drive the assembly frame to rotate, so that the nozzle unit rotates to meet the cutting requirements of the device in different directions. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a wire EDM machine tool according to the present invention;

[0020] Figure 2 This is a schematic diagram showing the positional relationship between the nozzle unit, drive unit, and coolant tank of a wire EDM machine tool according to the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the nozzle unit of a wire EDM machine tool according to the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the drive unit of a wire EDM machine according to the present invention;

[0023] Figure 5 This is a perspective view of a clamping block for a wire EDM machine according to the present invention.

[0024] Legend:

[0025] 10. Machine tool body; 11. Wire frame; 12. Coolant tank; 13. Nozzle unit; 14. Infusion pipe; 15. Drive unit; 16. Servo motor; 17. Nozzle body; 18. Arc plate; 19. Arc-shaped limit bar; 20. Assembly frame; 21. Limit frame; 22. Shaft; 23. First helical gear; 24. Micro drive motor; 25. Second helical gear; 26. Ring; 27. Flywheel gear ring; 28. Drive gear; 29. ​​Drive shaft; 30. Slide groove; 31. Engaging block. Detailed Implementation

[0026] like Figure 1-5As shown: A wire EDM machine tool includes a machine body 10 and a wire frame 11. A coolant tank 12 is provided at the front end of the wire frame 11. The electrode wire moves through the coolant tank 12. A nozzle unit 13 for cooling the electrode wire is provided below the coolant tank 12. A drive unit 15 for rotating the nozzle unit 13 is provided between the nozzle unit 13 and the coolant tank 12. A servo motor 16 is fixedly installed on one outer wall of the coolant tank 12. The nozzle unit 13 includes a nozzle body 17, an angle adjustment unit, and an assembly frame 20. A micro drive motor 24 is fixedly installed in the cavity of the assembly frame 20. The angle adjustment unit includes an arc plate 18 and a shaft 22. The rotation of the shaft 22 causes the arc plate 18 and the nozzle body 17 to rotate synchronously. The drive unit 15 includes a ring 26 and a flywheel gear ring 27. The flywheel gear ring 27 is fixedly installed on the outer wall of the ring 26. During the rotation, the flywheel gear ring 27 drives the two sets of nozzle units 13 below to rotate.

[0027] It is worth noting that the machine tool body 10 has already been disclosed in the prior art of a wire EDM machine tool (announcement number: CN117655439B), and will not be elaborated here.

[0028] Specifically, during wire cutting, coolant flows down the electrode wire to cool it. However, insufficient coolant flow within the kerf may occur, potentially leading to the accumulation of discharge products and secondary discharge, thus affecting product quality. This application addresses this by using two sets of nozzle units 13 to change the coolant flow direction, ensuring sufficient coolant flow within the kerf. A drive unit 15 rotates the nozzle units 13, meeting the needs of cutting in different directions.

[0029] A coolant inlet pipe is provided inside the coolant tank 12. A liquid delivery pipe 14 is connected between the coolant inlet pipe and the nozzle body 17. An arc plate 18 is fixedly installed on the top of the nozzle body 17. There are two sets of arc plates 18. A shaft 22 is fixedly installed between the two sets of arc plates 18.

[0030] Specifically, a coolant inlet pipe is provided inside the coolant tank 12, and a delivery pipe 14 is connected between the coolant inlet pipe and the nozzle body 17. The coolant enters the nozzle unit 13 from the delivery pipe 14 and is sprayed out. The nozzle unit 13 is designed with a flat opening so that the coolant is sprayed out in a flat line shape, which facilitates the coolant to enter the cut and ensures that the coolant in the cut flows fully.

[0031] A first helical gear 23 is fixedly passed through the shaft 22, and a second helical gear 25 is fixedly connected to the output shaft of the micro drive motor 24. The second helical gear 25 is movably meshed with the first helical gear 23.

[0032] Specifically, by setting a shaft 22 to be fixedly inserted through the first helical gear 23, and the output shaft of the micro drive motor 24 to be fixedly connected to the second helical gear 25, the second helical gear 25 is movably meshed with the first helical gear 23. During the process of adjusting the tilt angle of the nozzle body 17, the micro drive motor 24 drives the second helical gear 25 to rotate, and the second helical gear 25 is movably meshed with the first helical gear 23, so that the first helical gear 23 drives the shaft 22, the arc plate 18 and the nozzle body 17 to rotate synchronously.

[0033] Two sets of arc-shaped plates 18 are each fixedly installed with an arc-shaped limiting strip 19 on the side away from each other. A limiting frame 21 is fixedly installed on the outer wall of the assembly frame 20, and the arc-shaped limiting strip 19 moves through the corresponding limiting frame 21. The two sets of assembly frames 20 are fixedly installed at the bottom end of the ring 26, and the two sets of assembly frames 20 are in a symmetrical state.

[0034] Specifically, two sets of arc-shaped plates 18 are fixedly installed on opposite sides, and a limit frame 21 is fixedly installed on the outer wall of the assembly frame 20. The arc-shaped limit strip 19 moves through the corresponding limit frame 21. The limit frame 21 hooks the lower arc-shaped plate 18 and the nozzle body 17 through the arc-shaped limit strip 19. By setting two sets of assembly frames 20 fixedly installed at the bottom of the ring 26, the two sets of assembly frames 20 are symmetrical, so that the rotation of the ring 26 drives the assembly frame 20 to rotate synchronously.

[0035] The drive unit 15 also includes a drive gear 28. The output shaft of the servo motor 16 is fixedly connected to a drive shaft 29, and the other end of the drive shaft 29 is fixedly connected to the drive gear 28. The drive gear 28 is movably meshed with the flywheel ring gear 27. A groove 30 is provided on the inner wall of the ring 26. Multiple sets of locking blocks 31 are fixedly installed at the bottom of the coolant tank 12. The locking blocks 31 are L-shaped and arranged in a ring array. One end of the locking block 31 is movably engaged in the groove 30.

[0036] Specifically, the drive gear 28 is configured to mesh with the flywheel ring gear 27, which is fixedly mounted on the outer wall of the ring 26. When the servo motor 16 is working, it drives the drive gear 28 to rotate via the drive shaft 29. The rotation of the flywheel ring gear 27 and the ring 26 causes the assembly frame 20 to rotate, thereby causing the nozzle unit 13 to rotate and meet the cutting requirements of the device in different directions. By setting a groove 30 on the inner wall of the ring 26, multiple sets of locking blocks 31 are fixedly installed at the bottom of the coolant tank 12. One end of the locking block 31 is movably locked in the groove 30, and the multiple sets of locking blocks 31 are movably connected to the ring 26.

[0037] The working principle of the wire EDM machine described in this application is as follows: During the wire EDM process, coolant flows down along the electrode wire to cool it. However, there may be situations where the coolant does not flow sufficiently in the kerf, which may cause secondary discharge due to the accumulation of discharge products, affecting product quality. This application addresses this by setting two sets of nozzle units 13 to change the flow direction of the coolant, ensuring sufficient flow of coolant in the kerf. The nozzle units 13 are rotated by a drive unit 15 to meet the needs of cutting in different directions.

[0038] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A wire EDM machine tool, comprising a machine body (10) and a wire frame (11), wherein a coolant tank (12) is provided at the front end of the wire frame (11), and the electrode wire moves through the coolant tank (12), characterized in that: Below the coolant tank (12) is a nozzle unit (13) for cooling the electrode wire. Between the nozzle unit (13) and the coolant tank (12) is a drive unit (15) for rotating the nozzle unit (13). A servo motor (16) is fixedly installed on one side of the outer wall of the coolant tank (12). The nozzle unit (13) includes a nozzle body (17), an angle adjustment unit and an assembly frame (20). A micro drive motor (24) is fixedly installed in the cavity of the assembly frame (20). The angle adjustment unit includes an arc plate (18) and a shaft (22). The rotation of the shaft (22) causes the arc plate (18) and the nozzle body (17) to rotate synchronously. The drive unit (15) includes a ring (26) and a flywheel gear ring (27). The flywheel gear ring (27) is fixedly installed on the outer wall of the ring (26). During the rotation, the flywheel gear ring (27) drives the two sets of nozzle units (13) below to rotate.

2. The wire EDM machine tool according to claim 1, characterized in that: The coolant tank (12) is provided with a coolant inlet pipe. A delivery pipe (14) is connected between the coolant inlet pipe and the nozzle body (17). An arc plate (18) is fixedly installed on the top of the nozzle body (17). There are two sets of arc plates (18), and a shaft (22) is fixedly installed between the two sets of arc plates (18).

3. The wire EDM machine tool according to claim 2, characterized in that: The shaft (22) is fixedly connected to the first helical gear (23), and the output shaft of the micro drive motor (24) is fixedly connected to the second helical gear (25). The second helical gear (25) is in movable mesh with the first helical gear (23).

4. The wire EDM machine tool according to claim 2, characterized in that: Both sets of arc-shaped plates (18) are fixedly installed on the side away from each other, and a limit frame (21) is fixedly installed on the outer wall of the assembly frame (20). The arc-shaped limit strip (19) moves through the corresponding limit frame (21).

5. The wire EDM machine tool according to claim 1, characterized in that: The two sets of assembly frames (20) are fixedly installed at the bottom of the ring (26), and the two sets of assembly frames (20) are symmetrical.

6. The wire EDM machine tool according to claim 1, characterized in that: The drive unit (15) also includes a drive gear (28), the output shaft of the servo motor (16) is fixedly connected to the drive shaft (29), the other end of the drive shaft (29) is fixedly connected to the drive gear (28), and the drive gear (28) is movably meshed with the flywheel ring gear (27).

7. The wire EDM machine tool according to claim 1, characterized in that: The inner wall of the ring (26) is provided with a groove (30), and multiple sets of locking blocks (31) are fixedly installed at the bottom of the coolant tank (12). The locking blocks (31) are L-shaped and arranged in a ring array. One end of the locking block (31) is movably locked in the groove (30).

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