An electrode clamp for electric discharge machining

Abstract

The present application relates to a kind of electric spark electrode clamps.The electric spark electrode clamp includes clamp base, electrode stem and electrode head, the electrode stem is detachably mounted on the clamp base, the electrode head is detachably mounted on the electrode stem, to select corresponding electrode stem and electrode head according to processing object.The present application solves the problem of the existing electric spark electrode clamp, which has a wide variety, high cost and low processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to an electrical discharge electrode fixture. Background Technology

[0002] As a core component of diesel engines, the nozzle's machining quality affects the overall performance of the engine. The nozzle's inner ball recess, a key structure for pressurized spraying, requires high dimensional accuracy. Located at the junction of the nozzle orifice and inner bore, the inner ball recess cannot be machined using traditional methods due to the size of the nozzle's central bore and the size of the inner ball recess; therefore, electrical discharge machining (EDM) is typically employed.

[0003] For EDM machining of the nozzle's inner spherical concave area, a corresponding EDM electrode fixture needs to be designed. The design of the electrode fixture must consider multiple factors, including the nozzle's inner bore size, the inner spherical concave area size, and the positional dimensions of the inner spherical concave area. This results in a wide variety of electrode fixture types. Furthermore, most electrode fixtures are designed as a single unit, meaning the electrode head and electrode rod are integrated. When the electrode head wears out, the entire electrode fixture needs to be replaced. Since the electrode material is a precious metal, replacing the entire fixture results in significant cost waste. Additionally, after replacing the entire electrode fixture, re-clamping and alignment are often required, severely impacting machining efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an electrical discharge electrode fixture to solve the problems of numerous types, high cost, and low processing efficiency of existing electrode fixtures.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An electrical discharge electrode fixture includes a fixture base, an electrode rod, and an electrode head. The electrode rod is detachably mounted on the fixture base, and the electrode head is detachably mounted on the electrode rod, so as to select the appropriate electrode rod and electrode head according to the workpiece.

[0007] Based on the aforementioned technical means, by detachably mounting the electrode rod on the fixture base and detachably mounting the electrode head on the electrode rod, the electrode rod and electrode head are designed as separate modular units. Therefore, when machining the inner spherical concave of the nozzle, the corresponding electrode rod and / or electrode head can be selected and replaced according to different nozzle inner hole sizes, inner spherical concave sizes, and the location of the inner spherical concave, thus satisfying the machining requirements of the inner spherical concave of the nozzle. Furthermore, if the electrode head wears during machining, only the worn electrode head needs to be replaced. This effectively achieves the platform versatility of the EDM electrode fixture, improves machining efficiency, reduces production costs, and solves the problems of numerous types, high costs, and low machining efficiency of existing electrode fixtures.

[0008] Preferably, the electrode rod includes a transverse electrode rod and a longitudinal electrode rod, which can rotate along the fixture base to realize the feed machining of the machine tool in the X-axis, Y-axis and Z-axis directions.

[0009] By setting up transverse and longitudinal electrode rods and enabling them to rotate relative to the fixture base, the machine tool can effectively perform feed machining in the X, Y, and Z axes. At the same time, the transverse electrode rod is suitable for machining large parts, while the longitudinal electrode rod is suitable for machining small and medium-sized parts, further improving the platform versatility of the EDM electrode fixture.

[0010] Preferably, the transverse electrode rod is provided with a first positioning block for positioning the transverse electrode rod.

[0011] Preferably, a second positioning block is provided on the longitudinal electrode rod for positioning the longitudinal electrode rod.

[0012] By setting a first positioning block on the transverse electrode rod and a second positioning block on the longitudinal electrode rod, self-orientation can be achieved when assembling or replacing the transverse or longitudinal electrode rod, eliminating the need for alignment. This not only ensures the assembly accuracy of the EDM electrode fixture and the machining accuracy of the parts, but also improves production efficiency.

[0013] Preferably, a first positioning hole is formed on the fixture base at a position corresponding to the first positioning block, and the positioning of the transverse electrode rod is achieved by the cooperation of the first positioning block and the first positioning hole.

[0014] Preferably, a second positioning hole is formed on the fixture base at a position corresponding to the second positioning block, and the positioning of the longitudinal electrode rod is achieved by the cooperation of the second positioning block and the second positioning hole.

[0015] By setting a first positioning hole on the fixture base that corresponds to and engages with the first positioning block, and a second positioning hole that corresponds to and engages with the second positioning block, the positioning accuracy is effectively guaranteed.

[0016] Preferably, a transverse mounting groove for mounting the transverse electrode rod is formed along the width direction at a location near the lower end of the fixture base, and one end of the transverse electrode rod is fixed to the fixture base by fasteners.

[0017] By providing a transverse mounting groove along the width direction near the lower end of the fixture base for mounting the transverse electrode rod, and by using fasteners to assemble and fix one end of the transverse electrode rod to the fixture base, the assembly stability of the transverse electrode rod is effectively ensured, thereby ensuring the machining accuracy of the fixture.

[0018] Preferably, a longitudinal mounting groove for mounting the longitudinal electrode rod is formed along the length direction at a position near the lower end of the fixture base, and one end of the longitudinal electrode rod is pressed and fixed to the fixture base by a clamping member.

[0019] By providing a longitudinal mounting groove along the length direction near the lower end of the fixture base for mounting the longitudinal electrode rod, and clamping it to the fixture base with clamping components, the assembly stability of the longitudinal electrode rod is effectively ensured, thereby guaranteeing the machining accuracy of the fixture.

[0020] Preferably, the electrode head includes a transverse electrode head mounted on the transverse electrode rod and a longitudinal electrode head mounted on the longitudinal electrode rod.

[0021] By setting a transverse electrode head on the transverse electrode rod and a longitudinal electrode head on the longitudinal electrode rod, the machine tool can perform feed machining in the X, Y, and Z axes.

[0022] Preferably, the transverse electrode rod has a first mounting hole near the other end for mounting the transverse electrode head. The first mounting hole has an opening along its axial direction to accommodate the assembly of transverse electrode heads of different sizes.

[0023] Preferably, the longitudinal electrode rod has a second mounting hole near the other end for mounting the longitudinal electrode head. The second mounting hole has an opening along its axial direction to accommodate the assembly of longitudinal electrode heads of different sizes.

[0024] Preferably, a first flushing fluid channel is formed in the fixture base.

[0025] A second flushing channel is formed inside the transverse electrode rod, which is connected to the first flushing channel. The first outlet of the second flushing channel is located at one end of the transverse electrode rod, and the second outlet of the second flushing channel is close to the other end of the transverse electrode rod.

[0026] A third flushing channel is formed inside the longitudinal electrode rod, which is connected to the first flushing channel, and the liquid outlet of the third flushing channel is close to the longitudinal electrode head.

[0027] By forming a first flushing fluid channel in the fixture base, a second flushing fluid channel connected to the first flushing fluid channel in the transverse electrode rod, and a third flushing fluid channel connected to the first flushing fluid channel in the longitudinal electrode rod, flushing fluid processing is effectively realized, improving processing efficiency and avoiding the problem of parts being completely immersed in EDM oil during processing, which is wasteful of oil and time.

[0028] Preferably, the heads of the lateral electrode head and the longitudinal electrode head are hemispherical, and the lateral electrode head and the longitudinal electrode head are made of tungsten-copper alloy.

[0029] The beneficial effects of this invention are:

[0030] The EDM electrode fixture of this invention features a modular design where the electrode rod is detachably mounted on the fixture base, and the electrode head is detachably mounted on the electrode rod. This modular design allows for the separate mounting of the electrode rod and electrode head, enabling the machining of the nozzle's inner spherical concave surface. By selecting and replacing the appropriate electrode rod and / or electrode head based on different nozzle inner hole sizes, inner spherical concave surface sizes, and the location of the inner spherical concave surface, the machining of the nozzle's inner spherical concave surface can be achieved. Furthermore, if the electrode head wears during machining, only the worn electrode head needs to be replaced. This effectively realizes the platform versatility of the EDM electrode fixture, enables rapid clamping and orientation of the electrode head, reduces the types and number of electrode fixtures, improves machining efficiency, and lowers production costs. It solves the problems of numerous types, high costs, and low machining efficiency of existing electrode fixtures. Moreover, it has the advantages of high clamping accuracy, high machining efficiency, convenient debugging, and low cost, making it valuable for widespread application in the field of machining technology. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the electrical discharge electrode fixture of the present invention;

[0032] Figure 2 This is a schematic diagram of the fixture base structure;

[0033] Figure 3 A schematic diagram of the assembly of the transverse electrode rod and the transverse electrode head;

[0034] Figure 4 This is a schematic diagram of the structure of the electrical discharge electrode fixture of the present invention for machining the first workpiece;

[0035] Figure 5 This is a schematic diagram of the longitudinal electrode rod.

[0036] Figure 6 This is another schematic diagram of the longitudinal electrode rod;

[0037] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;

[0038] Figure 8 for Figure 6 A bottom view;

[0039] Figure 9 This is a schematic diagram of the structure of the electrical discharge electrode fixture of the present invention for machining a second part to be processed;

[0040] Figure 10 This is a schematic diagram of the longitudinal electrode head.

[0041] Wherein, 1-clamp base, 11-first positioning hole, 12-second positioning hole, 13-transverse mounting groove, 14-longitudinal mounting groove, 15-first flushing channel, 16-through hole, 17-inlet end; 2-transverse electrode rod, 21-first positioning block, 22-second flushing channel, 23-first outlet, 24-second outlet, 25-first milled flat surface, 26-inlet; 3-longitudinal electrode rod, 31-second positioning block, 32-second mounting hole, 33-opening, 34-third flushing channel, 35-liquid outlet, 36-plane, 37-second milled flat surface, 38-liquid inlet; 4-fastener; 5-clamping component; 6-transverse electrode head; 7-longitudinal electrode head; 8-machine tool; 9-plug; 10-first part to be processed; 11-second part to be processed. Detailed Implementation

[0042] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0043] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] Example 1

[0045] like Figures 1 to 10 As shown, an electrical discharge electrode fixture includes a fixture base 1, an electrode rod, and an electrode head. The electrode rod is detachably mounted on the fixture base 1, and the electrode head is detachably mounted on the electrode rod, so as to select the corresponding electrode rod and electrode head according to the workpiece.

[0046] By detachably mounting the electrode rod to the fixture base and detachably mounting the electrode head to the electrode rod, the electrode rod and electrode head are designed as separate modular units. This allows for the selection and replacement of the corresponding electrode rod and / or electrode head when machining the inner spherical concave of the nozzle, based on different nozzle inner hole sizes, inner spherical concave sizes, and the location of the inner spherical concave. Furthermore, if the electrode head wears during machining, only the worn electrode head needs to be replaced. This effectively achieves the platform versatility of the EDM electrode fixture, improves machining efficiency, and reduces production costs.

[0047] Among them, detachable installation methods include, but are not limited to, snap-fit ​​assembly, threaded assembly, etc.

[0048] The EDM electrode fixture in this embodiment is suitable for fixing the EDM electrode in the inner concave part of the nozzle for EDM forming.

[0049] The electrode rod provided in this application embodiment includes a transverse electrode rod 2 and a longitudinal electrode rod 3. The fixture base 1 can only be assembled with one electrode rod at a time, that is, the fixture base 1 is only assembled with the transverse electrode rod 2 or only with the longitudinal electrode rod 3 at a time.

[0050] For example, when a transverse electrode rod 2 is mounted on the fixture base 1, the transverse electrode rod 2 can rotate relative to the fixture base 1, thereby realizing the machine tool's feed machining in the Y-axis and Z-axis directions; for example, when a longitudinal electrode rod 3 is mounted on the fixture base 1, the longitudinal electrode rod 3 can rotate relative to the fixture base 1, thereby realizing the machine tool's switching feed machining in the X-axis and Y-axis directions. Figure 4 In the process, the first part to be processed, 10, is a large part, and the transverse electrode rod 2 is suitable for processing large parts. Figure 5 In the middle section, the second part to be processed, 11, is a medium to small part, and the longitudinal electrode rod 3 is suitable for processing medium to small parts. The three directions—X-axis, Y-axis, and Z-axis—are shown in the attached diagram. Figure 1 As shown in the image.

[0051] In this embodiment, a first positioning block 21 is provided on the transverse electrode rod 2 to position the transverse electrode rod 2; a second positioning block 31 is provided on the longitudinal electrode rod 3 to position the longitudinal electrode rod 3.

[0052] In some embodiments, a first positioning hole 11 is formed on the fixture base 1 at a position corresponding to the first positioning block 21, and the positioning of the transverse electrode rod 2 is achieved by the cooperation of the first positioning block 21 and the first positioning hole 11.

[0053] A second positioning hole 12 is formed on the fixture base 1 at the position corresponding to the second positioning block 31. The positioning of the longitudinal electrode rod 3 is achieved by the cooperation of the second positioning block 31 and the second positioning hole 12.

[0054] In some embodiments, the first positioning block 21 can be disposed at any location on the transverse electrode rod 2, as long as it can achieve the positioning of the transverse electrode rod 2. A preferred arrangement is that the first positioning block 21 is disposed circumferentially on the outer side wall of the transverse electrode rod 2 and close to the right end of the fixture base 1. At the same time, the fixture base 1 forms a first positioning hole 11 at the corresponding location to cooperate with the first positioning block 21 for positioning. Through the corresponding cooperation between the first positioning block 21 and the first positioning hole 11, the positioning of the transverse electrode rod 2 is achieved. The assembly is convenient and simple, and the positioning accuracy is high.

[0055] The first positioning block 21 can be triangular, square, polygonal, or other shapes. It can be a single component fixed to the outer wall of the transverse electrode rod 2, or it can be integrally formed on the outer wall of the transverse electrode rod 2. A preferred configuration is a square shape for the first positioning block 21, integrally formed on the outer wall of the transverse electrode rod 2. When the transverse electrode rod 2 is mounted on the fixture base 1, the first positioning block 21 engages with the first positioning hole 11 located on the side wall of the fixture base 1 for positioning. In practical use, if the feed direction needs to be switched, simply rotating the transverse electrode rod 2 will switch the machining direction of the transverse electrode head 6. Furthermore, when the transverse electrode head 6 is worn, it can be directly replaced without secondary alignment. This not only allows for rapid positioning of the transverse electrode rod 2 but also rapid self-orientation of the electrode head, enabling rapid switching of the machine tool in the X and Z axes while ensuring machining accuracy.

[0056] In some embodiments, the second positioning block 31 can be disposed at any location on the longitudinal electrode rod 3, as long as it can achieve the positioning of the longitudinal electrode rod 3. A preferred arrangement is that the second positioning block 31 is disposed circumferentially on the outer wall of the longitudinal electrode rod 3 and close to the bottom end of the fixture base 1. At the same time, the fixture base 1 forms a second positioning hole 12 at the corresponding location to cooperate with the second positioning block 31 for positioning. Through the corresponding cooperation between the second positioning block 31 and the second positioning hole 12, the positioning of the longitudinal electrode rod 3 is achieved, which has the advantages of convenient and simple assembly and high positioning accuracy.

[0057] The second positioning block 31 can be configured in various shapes, including but not limited to triangles, squares, and polygons. It can be a separate component fixed to the outer wall of the longitudinal electrode rod 3, or it can be integrally formed on the outer wall of the longitudinal electrode rod 3. A preferred configuration is a square shape for the second positioning block 31, integrally formed on the outer wall of the longitudinal electrode rod 3. When the longitudinal electrode rod 3 is mounted on the fixture base 1, the second positioning block 31 engages with the second positioning hole 12 located at the bottom of the fixture base 1 for positioning. In practical use, if the feed direction needs to be switched, simply rotating the longitudinal electrode rod 3 will switch the processing direction of the longitudinal electrode head 7. Furthermore, when the longitudinal electrode head 7 is worn, it can be directly replaced without secondary alignment. This not only allows for rapid positioning of the longitudinal electrode rod 3 but also rapid self-orientation of the electrode head, enabling rapid switching of feed direction between the X and Y axes while ensuring machining accuracy.

[0058] In this embodiment, a transverse mounting groove 13 for mounting the transverse electrode rod 2 is formed along the width direction near the lower end of the fixture base 1. One end of the transverse electrode rod 2 is fixed to the fixture base 1 by a fastener 4. The fastener 4 includes, but is not limited to, nuts and other fasteners with similar functions.

[0059] In some embodiments, the fixture base 1 is generally rectangular in shape. One end of the fixture base 1 along its length is assembled and fixed to the spindle hole of the machine tool 8, and the portion near the other end is used to form a transverse mounting groove 13. The transverse mounting groove 13 is a straight groove formed from the side wall of the fixture base 1 along its width. When installing the transverse electrode rod 2, one end of the transverse electrode rod 2 passes through the straight groove and is fastened to the fixture base 1 by fasteners 4.

[0060] In this embodiment, a longitudinal mounting groove 14 for mounting a longitudinal electrode rod 3 is formed along the length direction near the lower end of the fixture base 1. One end of the longitudinal electrode rod 3 is pressed and fixed to the fixture base 1 by a clamping member 5. The clamping member 5 includes, but is not limited to, screws, bolts, or other clamping members with similar functions.

[0061] In some embodiments, the longitudinal mounting groove 14 is a straight groove formed from the bottom of the fixture base 1 along the length direction upward. A through hole 16 for the clamping member 5 to pass through is formed on the side wall of the fixture base 1. When installing the longitudinal electrode rod 3, one end of the longitudinal electrode rod 3 passes through the straight groove, and the clamping member 5 passes through the through hole 16 to press and fix the longitudinal electrode rod 3 on the fixture base 1.

[0062] In some embodiments, the transverse mounting groove 13 and the longitudinal mounting groove 14 are perpendicular to each other or tend to be perpendicular, and the transverse mounting groove 13 and the longitudinal mounting groove 14 are connected.

[0063] In some embodiments, a plane 36 that mates with the clamping member 5 is also formed on the side wall of the longitudinal electrode rod 3. The end of the clamping member 5 that contacts the longitudinal electrode rod 3 is also a plane, so that when the clamping member 5 clamps the longitudinal electrode rod 3, the plane end of the clamping member 5 directly and tightly contacts the plane 36, increasing the contact area between the clamping member 5 and the longitudinal electrode rod 3, ensuring assembly stability, and thereby improving processing efficiency and processing accuracy.

[0064] In this embodiment, the electrode head includes a transverse electrode head 6 mounted on a transverse electrode rod 2 and a longitudinal electrode head 7 mounted on a longitudinal electrode rod 3. Specifically, for the transverse electrode rod 2, one end passes through the transverse mounting groove 13 of the fixture base 1 and is fixed to the fixture base 1 by a fastener 4, while the transverse electrode head 6 is detachably mounted near the other end. For the longitudinal electrode rod 3, one end passes through the longitudinal mounting groove 14 of the fixture base 1 and is pressed and fixed to the fixture base 1 by a clamping member 5, while the longitudinal electrode head 7 is detachably mounted near the other end.

[0065] In some embodiments, the transverse electrode rod 2 has a first mounting hole for mounting the transverse electrode head 6 at a position near the other end. The first mounting hole has an opening along its axial direction to accommodate the assembly of transverse electrode heads 6 of different sizes.

[0066] The longitudinal electrode rod 3 has a second mounting hole 32 near the other end for mounting the longitudinal electrode head 7. The second mounting hole 32 has an opening 33 along its axial direction to accommodate the assembly of longitudinal electrode heads 7 of different sizes.

[0067] For example, the portion of the transverse electrode rod 2 near the other end is milled flat along the axis in a horizontal direction. A first mounting hole is formed in the vertical direction of the first milled surface 25. The transverse electrode head 6 is inserted into the first mounting hole in the vertical direction of the first milled surface 25. The transverse electrode head 6 and the first mounting hole are interference fit, so that the transverse electrode head 6 is firmly fixed by the deformation force of the first mounting hole. The first mounting hole is broken in the vertical direction of the first milled surface 25 to form an opening, thereby accommodating transverse electrode heads 6 of different sizes and improving the platform versatility of the fixture.

[0068] For example, the portion of the longitudinal electrode rod 3 near the other end is milled flat along the axis in a vertical direction. A second mounting hole 32 is formed in the vertical direction of the second milled surface 37. The longitudinal electrode head 7 is inserted into the second mounting hole 32 in the vertical direction of the second milled surface 37. The longitudinal electrode head 7 and the second mounting hole 32 are interference fit, so that the longitudinal electrode head 7 is firmly fixed by the deformation force of the second mounting hole 32. The second mounting hole 32 is broken in the vertical direction of the second milled surface 37 to form an opening 33, thereby accommodating longitudinal electrode heads 7 of different sizes and improving the platform versatility of the fixture.

[0069] In this embodiment of the application, a first flushing fluid channel 15 is formed in the fixture base 1;

[0070] A second flushing channel 22 is formed inside the transverse electrode rod 2, which is connected to the first flushing channel 15. The first outlet 23 of the second flushing channel 22 is located at one end of the transverse electrode rod 2, and the second outlet 24 of the second flushing channel 22 is close to the other end of the transverse electrode rod 2.

[0071] A third flushing channel 34 is formed inside the longitudinal electrode rod 3, which is connected to the first flushing channel 15. The liquid outlet 35 of the third flushing channel 34 is close to the longitudinal electrode head 7.

[0072] In some embodiments, the first flushing fluid channel 15 in the fixture base 1 is formed along the centerline in the length direction, and the inlet end 17 of the first flushing fluid channel 15 is connected to the flushing fluid channel of the machine tool 8. The second flushing fluid channel 22 inside the transverse electrode rod 2 has a T-shaped structure with one inlet and two outlets, thus adapting to various options for electrical discharge machining. The inlet 26 of the second flushing fluid channel 22 is located on the side wall of the transverse electrode rod 2. When the transverse electrode rod 2 is installed on the fixture base 1, the inlet 26 of the second flushing fluid channel 22 is connected to the outlet of the first flushing fluid channel 15. The transverse flow channel of the second flushing fluid channel 22 is arranged along the axis of the transverse electrode rod 2. The end of the transverse electrode rod 2 used to fix it with the fastener 4 is the first outlet 23. Normally, the first outlet 23 is sealed by a plug 9. The plug 9 is made of nylon. When flushing is required, the plug 9 can be removed. The second outlet 24 of the transverse electrode rod 2 is located at the milled end, and the orientation of the second outlet 24 is aligned with the transverse electrode head 6, thereby effectively realizing flushing and avoiding completely immersing the parts in the electrical discharge oil. The third flushing fluid channel 34 inside the longitudinal electrode rod 3 is arranged along the axis of the longitudinal electrode rod 3. The liquid inlet 38 of the third flushing fluid channel 34 is located at one end of the longitudinal electrode rod 3. When the longitudinal electrode rod 3 is installed on the fixture base 1, the liquid inlet 38 of the third flushing fluid channel 34 is connected to the liquid outlet of the first flushing fluid channel 15. The liquid outlet 35 of the longitudinal electrode rod 3 is located at the milled end, and the liquid outlet 35 is aligned with the longitudinal electrode head 7, thereby effectively realizing flushing fluid processing and avoiding completely immersing the parts in the EDM oil.

[0073] In this embodiment, the heads of the transverse electrode head 6 and the longitudinal electrode head 7 are hemispherical in shape and are made of tungsten-copper alloy. The dimensions of the heads of the transverse electrode head 6 and the longitudinal electrode head 7 are determined by the size of the inner concave part of the nozzle.

[0074] In summary, the EDM electrode fixture of the present invention features a modular design where the electrode rod is detachably mounted on the fixture base and the electrode head is detachably mounted on the electrode rod. This modular design allows for the separate mounting of the electrode rod and electrode head, enabling the machining of the nozzle's inner spherical concave surface by selecting and replacing the appropriate electrode rod and / or electrode head based on different nozzle inner hole sizes, inner spherical concave surface sizes, and the location of the inner spherical concave surface. Furthermore, if the electrode head wears during machining, only the worn electrode head needs to be replaced. This effectively achieves the platform versatility of the EDM electrode fixture, enables rapid clamping and orientation of the electrode head, reduces the types and number of electrode fixtures, improves machining efficiency, and lowers production costs. It solves the problems of numerous types, high costs, and low machining efficiency of existing electrode fixtures, and has the advantages of high clamping accuracy, high machining efficiency, convenient debugging, and low cost. It has significant application value in the field of machining technology.

[0075] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. An electrical discharge electrode fixture, characterized in that, It includes a fixture base (1), an electrode rod and an electrode head. The electrode rod is detachably mounted on the fixture base (1), and the electrode head is detachably mounted on the electrode rod, so as to select the corresponding electrode rod and electrode head according to the processing object. The electrode rod includes a transverse electrode rod (2) and a longitudinal electrode rod (3). The transverse electrode rod (2) and the longitudinal electrode rod (3) can rotate along the fixture base (1) to realize the feed machining of the machine tool in the X-axis, Y-axis and Z-axis directions. The transverse electrode rod (2) is provided with a first positioning block (21) for positioning the transverse electrode rod (2); the longitudinal electrode rod (3) is provided with a second positioning block (31) for positioning the longitudinal electrode rod (3). The electrode head includes a transverse electrode head (6) mounted on the transverse electrode rod (2) and a longitudinal electrode head (7) mounted on the longitudinal electrode rod (3). The transverse electrode rod (2) has a first mounting hole near one end for mounting the transverse electrode head (6). The first mounting hole has an opening along its axial direction to accommodate the assembly of transverse electrode heads (6) of different sizes. The longitudinal electrode rod (3) has a second mounting hole (32) near one end for mounting the longitudinal electrode head (7). The second mounting hole (32) has an opening (33) along its axial direction to accommodate the assembly of longitudinal electrode heads (7) of different sizes.

2. The EDM electrode fixture according to claim 1, characterized in that, The fixture base (1) has a first positioning hole (11) formed at a position corresponding to the first positioning block (21), and the positioning of the transverse electrode rod (2) is achieved by the cooperation of the first positioning block (21) and the first positioning hole (11); And / or a second positioning hole (12) is formed on the fixture base (1) at a position corresponding to the second positioning block (31), and the positioning of the longitudinal electrode rod (3) is achieved by the cooperation of the second positioning block (31) and the second positioning hole (12).

3. The electrical discharge electrode fixture according to claim 1, characterized in that, A transverse mounting groove (13) for mounting the transverse electrode rod (2) is formed along the width direction at a position near the lower end of the fixture base (1). The other end of the transverse electrode rod (2) is fixed to the fixture base (1) by fasteners (4).

4. The electrical discharge electrode fixture according to claim 1, characterized in that, A longitudinal mounting groove (14) for mounting the longitudinal electrode rod (3) is formed along the length direction at a position near the lower end of the fixture base (1). The other end of the longitudinal electrode rod (3) is pressed and fixed on the fixture base (1) by a clamping member (5).

5. The electrical discharge electrode fixture according to claim 1, characterized in that, A first flushing channel (15) is formed inside the fixture base (1); The transverse electrode rod (2) has a second flushing channel (22) that is connected to the first flushing channel (15). The first outlet (23) of the second flushing channel (22) is located at one end of the transverse electrode rod (2), and the second outlet (24) of the second flushing channel (22) is close to the other end of the transverse electrode rod (2). The longitudinal electrode rod (3) has a third flushing channel (34) that is connected to the first flushing channel (15), and the liquid outlet (35) of the third flushing channel (34) is close to the longitudinal electrode head (7).

6. The EDM electrode fixture according to claim 1, characterized in that, The heads of the transverse electrode head (6) and the longitudinal electrode head (7) are hemispherical in shape, and the transverse electrode head (6) and the longitudinal electrode head (7) are made of tungsten copper alloy.

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