Electric discharge machine for precision mold machining

Abstract

The utility model discloses an electric discharge machine for precision mold machining. The electric discharge machine comprises a machine base, a double-shaft moving mechanism, a box body, a workpiece clamping jig and an electric discharge machine head. The box body is connected with the double-shaft moving mechanism, a containing cavity is formed in the box body, the workpiece clamping jig is arranged in the containing cavity, and the workpiece clamping jig is used for positioning and placing a mold accessory to be subjected to electric spark machining; the electric spark machine head is arranged above the box body and used for conducting electric discharge machining on the mold accessories on the workpiece clamping jig, and the workpiece clamping jig comprises a bottom plate, a rotating air cylinder, a pressing plate and a negative pressure cavity base. According to the utility model, a mold accessory to be subjected to electric spark machining can be placed on the workpiece clamping jig, the double-shaft moving mechanism can drive the box body to move in the X-axis direction and the Y-axis direction so as to ensure that the mold accessory is accurately positioned in the machining range of the electric spark machine head, and the electric spark machine head can corrode materials of the mold accessory in a pulse discharge mode, so that the machining efficiency is improved. Therefore, electric spark machining is achieved.

Description

Technical Field

[0001] This utility model relates to the field of electrical discharge machines, and in particular to an electrical discharge machine for precision mold processing. Background Technology

[0002] Molds can process metal materials into the required products or parts according to needs. When processing molds, rough machining and heat treatment are usually performed first, followed by fine machining. However, after heat treatment, the surface hardness of the mold is high, and grinding with a regular lathe is quite costly. Therefore, electrical discharge machining is usually used.

[0003] In the existing technology, the workpiece fixture of the EDM machine can generally only hold one workpiece at a time, and the clamping process is cumbersome, resulting in low EDM machining efficiency of the mold. In addition, the door opening of the traditional EDM machine housing is small, which is not convenient for operation, especially when clamping large or complex mold parts, making it difficult for operators to easily clamp and adjust the workpiece.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an electrical discharge machining (EDM) machine for precision mold processing that improves processing efficiency and facilitates rapid workpiece clamping.

[0006] To achieve this objective, the present invention adopts the following technical solution: an electrical discharge machine for precision mold processing, comprising a base, a dual-axis moving mechanism, a housing, a workpiece clamping fixture, and an electrical discharge head;

[0007] The dual-axis moving mechanism is mounted on the base, and the housing is connected to the dual-axis moving mechanism. The dual-axis moving mechanism is used to adjust the position of the housing.

[0008] The box has a receiving chamber, and the workpiece clamping fixture is disposed in the receiving chamber. The workpiece clamping fixture is used to position and place the mold parts to be processed by electrical discharge machining.

[0009] The electrical discharge head is located above the housing and is used to perform electrical discharge machining on the mold components on the workpiece clamping fixture.

[0010] The workpiece clamping fixture includes a base plate, a rotary cylinder, a pressure plate, and a negative pressure chamber seat. The rotary cylinder is located on both sides of the base plate, and the movable end of the rotary cylinder is connected to the pressure plate.

[0011] The negative pressure chamber seat is located between the two rotary cylinders on both sides, and the rotary cylinders are used to drive the pressure plate to rotate so as to fit tightly against the surface of the negative pressure chamber seat;

[0012] The negative pressure chamber seat is provided with an array of positioning holes, and the positioning holes are provided with adsorption air holes, which are used to adsorb the mold parts into the positioning holes.

[0013] In the above technical solution, the EDM machine for precision mold processing has a first movable door and a second movable door on the side wall of the housing;

[0014] The first movable door and the second movable door are rotatably connected to the side wall of the box body by pins, and the first movable door and the second movable door are arranged vertically.

[0015] The first movable door is provided with a first latch on one side, and the second movable door is provided with a second latch on one side. The first latch and the second latch are connected by a latch.

[0016] In the above-mentioned EDM machine for precision mold processing, the inner side of the housing is provided with a water tank chamber, which is used to fill dielectric liquid.

[0017] The side wall of the water tank chamber is provided with several ball valves, which are used to transport the dielectric liquid in the water tank chamber to the receiving chamber.

[0018] The EDM machine for precision mold processing, which adopts the above technical solutions, also includes a water pump and a liquid supply pipe;

[0019] The water pump is connected to the water tank chamber through the liquid supply pipe, and the water pump is used to transport external dielectric liquid into the water tank chamber through the liquid supply pipe.

[0020] Using the above technical solutions, in the EDM machine for precision mold processing, the dual-axis movement mechanism includes an X-axis linear module and a Y-axis linear module;

[0021] The X-axis linear module is mounted on the base, the Y-axis linear module is connected to the movable end of the X-axis linear module, and the housing is located at the movable end of the Y-axis linear module.

[0022] The EDM machine for precision mold processing, which adopts the above technical solutions, also includes a lighting lamp, which is located on the side of the housing and is used to provide illumination for the EDM head.

[0023] The EDM machine for precision mold processing, which adopts the above technical solutions, also includes a column arm and a fire extinguisher. The column arm is located on the side of the machine base, the EDM head is connected to the top of the column arm, and the fire extinguisher is hung on the side of the column arm.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] This invention places mold components to be EDM-processed on a workpiece clamping fixture. A dual-axis moving mechanism drives the housing to move along the X and Y axes, ensuring the mold components are accurately positioned within the EDM head's processing range. The EDM head removes material from the mold components via pulse discharge, thus achieving EDM processing. The workpiece clamping fixture uses negative pressure to firmly hold the mold components within the positioning holes, ensuring precise positioning and fixation during processing and preventing displacement. The arrayed positioning holes can simultaneously clamp multiple mold components, effectively improving processing efficiency and meeting large-volume processing needs. The first and second movable doors provide a larger opening size when the housing is opened, facilitating quick clamping and removal of workpieces, reducing operational difficulty, and improving work efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the workpiece clamping fixture structure of this utility model;

[0030] Figure 3 This is a schematic diagram of the overall back structure of this utility model;

[0031] Figure 4 This is a schematic diagram of the box structure of this utility model. Detailed Implementation

[0032] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below 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 skilled in the art without creative effort are within the scope of protection of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 4 As shown in the figure, this utility model embodiment provides an EDM machine for precision mold processing, including a base 1, a dual-axis moving mechanism 2, a housing 3, a workpiece clamping fixture 4, and an EDM head 5. The dual-axis moving mechanism 2 is mounted on the base 1, and the housing 3 is connected to the dual-axis moving mechanism 2. The dual-axis moving mechanism 2 is used to adjust the position of the housing 3. The housing 3 has a receiving chamber 30, and the workpiece clamping fixture 4 is disposed in the receiving chamber 30. The workpiece clamping fixture 4 is used to position and place the workpiece to be EDM machine. The EDM die assembly is located above the housing 3. The EDM die assembly 5 is used to perform electrical discharge machining on the die assembly on the workpiece clamping fixture 4. The die assembly to be EDM machined can be placed on the workpiece clamping fixture 4. The dual-axis moving mechanism 2 can drive the housing 3 to move in the X and Y axis directions to ensure that the die assembly is accurately located within the machining range of the EDM die assembly 5. The EDM die assembly 5 can remove the material of the die assembly by pulse discharge, thereby achieving the predetermined machining task.

[0036] like Figure 2As shown, the workpiece clamping fixture 4 includes a base plate 41, a rotary cylinder 42, a pressure plate 43, and a negative pressure chamber seat 44. The rotary cylinder 42 is located on both sides of the base plate 41, and the movable end of the rotary cylinder 42 is connected to the pressure plate 43. The negative pressure chamber seat 44 is located between the two rotary cylinders 42. The rotary cylinder 42 is used to drive the pressure plate 43 to rotate so that it is tightly attached to the surface of the negative pressure chamber seat 44. The negative pressure chamber seat 44 is provided with an array of positioning holes 441. The positioning holes 441 are provided with adsorption holes 442. The adsorption holes 442 on the negative pressure chamber seat 44 can tightly adsorb the mold parts into the positioning holes 441 by negative pressure adsorption, ensuring the accurate positioning and fixation of the workpiece during the processing and preventing the workpiece from shifting. The array of positioning holes 441 can clamp multiple mold parts at the same time, thereby effectively improving processing efficiency and meeting the needs of large-scale processing. It should be noted that the positioning hole 441 can be adapted and positioned with the guide sleeve spacer or sealing ring in the mold accessories.

[0037] like Figure 4 As shown, further, the side wall of the housing 3 is provided with a first movable door 31 and a second movable door 32. The first movable door 31 and the second movable door 32 are rotatably connected to the side wall of the housing 3 by pins, and the first movable door 31 and the second movable door 32 are arranged vertically. The side end of the first movable door 31 is provided with a first locking member 311, and the side end of the second movable door 32 is provided with a second locking member 321. The first locking member 311 and the second locking member 321 are connected by a locking mechanism. By arranging the first movable door 31 and the second movable door 32 vertically, and by allowing the first movable door 31 and the second movable door 32 to rotate relative to the housing 3, the housing 3 can provide a larger opening size when opened, facilitating quick clamping and removal of workpieces, reducing operational difficulty, and improving work efficiency. The locking member 311 and the second locking member 321 are connected by a locking mechanism, allowing the first movable door 31 and the second movable door 32 to fit tightly against the side wall of the housing 3, enhancing the sealing performance of the housing 3 and preventing leakage of the internal dielectric fluid.

[0038] like Figure 1 and Figure 3 As shown, further, a water tank chamber 35 is provided inside the housing 3. The water tank chamber 35 is used to fill the dielectric liquid. Several ball valves 36 are provided on the side wall of the water tank chamber 35. The ball valves 36 are used to transport the dielectric liquid in the water tank chamber 35 to the receiving chamber 30. The dielectric liquid has good electrical insulation properties, which can prevent direct short circuits between the electrodes of the EDM head 5 and the workpiece, improve the safety of processing, and effectively remove heat during EDM, maintain the temperature stability of the processing area, and extend the service life of the equipment and the workpiece.

[0039] like Figure 3 As shown, it further includes a water pump 33 and a liquid supply pipe 34. The water pump 33 is connected to the water tank chamber 35 through the liquid supply pipe 34. The water pump 33 is used to transport external dielectric liquid to the water tank chamber 35 through the liquid supply pipe 34. This arrangement can avoid processing interruption due to insufficient dielectric liquid and improve the continuity and efficiency of electrical discharge machining.

[0040] like Figure 1 As shown, the dual-axis moving mechanism 2 further includes an X-axis linear module 21 and a Y-axis linear module 22. The X-axis linear module 21 is mounted on the base 1, and the Y-axis linear module 22 is connected to the movable end of the X-axis linear module 21. The housing 3 is located at the movable end of the Y-axis linear module 22. The X-axis linear module 21 and the Y-axis linear module 22 cooperate with each other to achieve precise two-dimensional movement in a plane, enabling the housing 3 to be precisely positioned according to the requirements of the machining program, thereby aligning the workpiece on the workpiece clamping fixture 4 with the EDM head 5 for machining.

[0041] like Figure 1 As shown, it further includes a lighting lamp 6, which is located on the side of the housing 3. The lighting lamp 6 is used to provide illumination for the EDM head 5. The lighting lamp 6 provides sufficient light for the EDM head 5 and the working area, ensuring that the operator can clearly see the workpiece and processing details during the processing, and preventing accidents.

[0042] like Figure 3 As shown, the system further includes a support arm 7 and a fire extinguisher 8. The support arm 7 is located at the side end of the base 1, and the EDM head 5 is connected to the top of the support arm 7. The fire extinguisher 8 is hung on the side end of the support arm 7. High temperatures and sparks are generated during EDM, posing a risk of fire. The fire extinguisher 8 allows operators to quickly extinguish fires in emergencies, preventing the fire from spreading and protecting equipment and personnel safety.

[0043] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electrical discharge machining (EDM) machine for precision mold processing, characterized in that, Includes a base, a dual-axis moving mechanism, a housing, a workpiece clamping fixture, and an EDM head; The dual-axis moving mechanism is mounted on the base, and the housing is connected to the dual-axis moving mechanism. The dual-axis moving mechanism is used to adjust the position of the housing. The box has a receiving chamber, and the workpiece clamping fixture is disposed in the receiving chamber. The workpiece clamping fixture is used to position and place the mold parts to be processed by electrical discharge machining. The electrical discharge head is located above the housing and is used to perform electrical discharge machining on the mold components on the workpiece clamping fixture. The workpiece clamping fixture includes a base plate, a rotary cylinder, a pressure plate, and a negative pressure chamber seat. The rotary cylinder is located on both sides of the base plate, and the movable end of the rotary cylinder is connected to the pressure plate. The negative pressure chamber seat is located between the two rotary cylinders on both sides, and the rotary cylinders are used to drive the pressure plate to rotate so as to fit tightly against the surface of the negative pressure chamber seat; The negative pressure chamber seat is provided with an array of positioning holes, and the positioning holes are provided with adsorption air holes, which are used to adsorb the mold parts into the positioning holes.

2. The electrical discharge machining (EDM) machine for precision mold processing according to claim 1, characterized in that, The side wall of the enclosure is provided with a first movable door and a second movable door; The first movable door and the second movable door are rotatably connected to the side wall of the box body by pins, and the first movable door and the second movable door are arranged vertically. The first movable door is provided with a first latch on one side, and the second movable door is provided with a second latch on one side. The first latch and the second latch are connected by a latch.

3. The electrical discharge machining (EDM) machine for precision mold processing according to claim 1, characterized in that, The inner side of the box is provided with a water tank chamber, which is used to fill dielectric liquid; The side wall of the water tank chamber is provided with several ball valves, which are used to transport the dielectric liquid in the water tank chamber to the receiving chamber.

4. The electrical discharge machining (EDM) machine for precision mold processing according to claim 3, characterized in that, It also includes a water pump and a liquid supply pipe; The water pump is connected to the water tank chamber through the liquid supply pipe, and the water pump is used to transport external dielectric liquid into the water tank chamber through the liquid supply pipe.

5. The electrical discharge machining (EDM) machine for precision mold processing according to claim 1, characterized in that, The dual-axis movement mechanism includes an X-axis linear module and a Y-axis linear module; The X-axis linear module is mounted on the base, the Y-axis linear module is connected to the movable end of the X-axis linear module, and the housing is located at the movable end of the Y-axis linear module.

6. The electrical discharge machining (EDM) machine for precision mold processing according to claim 1, characterized in that, It also includes a lighting lamp, which is located on the side of the housing and is used to provide illumination for the EDM head.

7. The electrical discharge machining (EDM) machine for precision mold processing according to claim 1, characterized in that, It also includes a support arm and a fire extinguisher. The support arm is located on the side of the base, the EDM head is connected to the top of the support arm, and the fire extinguisher is hung on the side of the support arm.

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