Electrode for extrusion die machining

Abstract

The utility model discloses an electrode for extrusion die processing, including the first electrode, second electrode, tertiary electrode and base that are connected in proper order, the cross section contour of second electrode, tertiary electrode is around the cross section contour outside the first electrode, and the first electrode corresponds with the die hole of extrusion die, and second electrode corresponds with the rear air knife of extrusion die. This scheme can make the machining accuracy and processing efficiency have very big promotion, adopt the structure of multistage inlay, and each electrode has the next electrode to support, guarantees the electrode intensity, and the deformation is not easy to take place, the position is fixed between each electrode, and the die hole position accuracy and working band perpendicularity are high when spark discharge machining, and, because the base can cut out multiple electrode inlay hole positions, so a base can set up multiple electrode pieces, and the scheme can also be adopted for the case that the suspension bridge type extrusion die is designed into the multi -hole die, can fully satisfy the machining accuracy requirement, and the processing efficiency is doubled for the multi -hole die once spark discharge machining.

Description

Technical Field

[0001] This utility model belongs to the technical field of profile extrusion die processing and EDM machine, specifically relating to an electrode for extrusion die processing. Background Technology

[0002] In the processing of profile extrusion dies, a through-hole is typically formed through wire cutting or electrical discharge machining. For bridge-type extrusion dies (e.g....), Figure 7 , Figure 8 As shown in the existing patent, also referred to as a "suspension bridge type hot extrusion die" or "suspension bridge type aluminum profile extrusion die," a suspension bridge is set on the material inlet side of the die hole, spanning across the die hole. Therefore, the die hole cannot be machined using traditional wire cutting; the die hole and the first and second stage back blanks can only be machined using electrical discharge machining (EDM). The existing method involves creating electrodes separately for machining the die hole and the first and second stage back blanks, and then sequentially performing EDM. However, because the die hole is small (corresponding to thin-walled profiles), the electrodes are also small and prone to deformation, resulting in a non-vertical die working zone and low precision. The first and second stage back blanks are also prone to misalignment. Furthermore, the die cannot be designed as a multi-hole die; only a single-exit die can be made. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an electrode for extrusion die processing, which solves the problems of easy deformation and low processing accuracy of existing electrodes, and while ensuring the strength of the electrode, it can be applied to bridge-type extrusion dies and multi-hole extrusion dies.

[0004] According to the technical solution of this utility model, this utility model provides an electrode for extrusion die processing, including a primary electrode, a secondary electrode, a tertiary electrode and a base connected in sequence. The cross-sectional contours of the secondary electrode and the tertiary electrode surround the cross-sectional contour of the primary electrode. The primary electrode corresponds to the die hole of the extrusion die, and the secondary electrode corresponds to the back cutter of the extrusion die.

[0005] In some implementations, the primary electrode has a plate-like structure.

[0006] In some embodiments, the cross-sectional shape of the primary electrode has a groove-shaped structure, and the extrusion die is a suspension bridge type extrusion die.

[0007] In some embodiments, the secondary electrode has a primary mounting groove that matches the cross-sectional profile of the primary electrode, and the primary electrode is embedded and fixed in the primary mounting groove.

[0008] In some embodiments, the secondary electrode has one or more recessed secondary mounting grooves on its outer surface, and the tertiary electrode has one or more recessed tertiary mounting grooves on its outer surface. The secondary and tertiary mounting grooves are aligned and fixed with a strip; a portion of the same strip is fitted with the secondary mounting groove and another portion is fitted with the tertiary mounting groove.

[0009] In some embodiments, the secondary and tertiary mounting slots extend through each other in the direction from the primary electrode to the base, and the openings of the cross-sectional shapes of the secondary and tertiary mounting slots face outwards.

[0010] In some implementations, the openings of the secondary and tertiary inlay slots gradually decrease in size from the inside to the outside.

[0011] In some embodiments, the base has electrode mounting holes that match the cross-sectional profile of the tertiary electrode, and the tertiary electrode is embedded and fixed in the electrode mounting holes.

[0012] In some embodiments, the base has an electrode mounting hole that matches the cross-sectional profile of the tertiary electrode. The sidewall of the electrode mounting hole has an inwardly protruding mounting block that matches the tertiary mounting groove. The tertiary electrode is embedded and fixed in the electrode mounting hole, and the mounting block is engaged with the tertiary mounting groove.

[0013] In some embodiments, a set of electrode components is provided on a base, or multiple sets of electrode components are arranged side by side on a base; each set of electrode components includes a primary electrode, a secondary electrode, and a tertiary electrode connected to each other, and the cross-sectional shapes of the primary electrode, the secondary electrode, and the tertiary electrode correspond to each other; there is a gap between different sets of electrode components.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows: The electrode for extrusion die processing of this utility model can greatly improve both processing accuracy and efficiency. It employs a multi-level inlaid structure, with each level of electrode supported by the next level, ensuring electrode strength and preventing deformation. The fixed positions of each level of electrode result in high accuracy of the die hole position and high perpendicularity of the working zone during electrical discharge machining. Furthermore, since multiple electrode inlay holes can be cut into the base, multiple sets of electrodes can be installed on a single base. This solution can also be used for multi-hole extrusion dies designed as bridge-type dies, fully meeting processing accuracy requirements. For multi-hole dies, processing efficiency is doubled in a single electrical discharge machining operation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the electrode for extrusion die processing provided by this utility model.

[0016] Figure 2This is a three-dimensional structural diagram of the primary electrode provided by this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the secondary electrode provided by this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the three-stage electrode provided by this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the base provided by this utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the inlay strip provided by this utility model.

[0021] Figure 7 This is a top-view perspective structural diagram of the suspension bridge type extrusion die provided by this utility model.

[0022] Figure 8 This is a cross-sectional structural diagram of the suspension bridge type extrusion die provided by this utility model.

[0023] Explanation of reference numerals in the attached figures: 1. Primary electrode; 2. Secondary electrode; 21. Primary mounting slot; 22. Secondary mounting slot; 3. Tertiary electrode; 31. Tertiary mounting slot; 4. Base; 41. Electrode mounting hole; 42. Mounting block; 5. Insert; 6. Suspension bridge type extrusion die; 61. Suspension bridge; 62. Die hole; 63. Rear blanking tool. Detailed Implementation

[0024] This invention provides an electrode for extrusion die processing, which solves the problems of easy deformation and low processing accuracy of existing electrodes. While ensuring electrode strength, it can be applied to bridge-type extrusion dies and multi-hole extrusion dies.

[0025] Please see Figures 1 to 8 This utility model discloses an electrode for extrusion die processing, comprising a primary electrode 1, a secondary electrode 2, a tertiary electrode 3, and a base 4 connected in sequence, so as to... Figure 1 The orientation is described as follows: the tertiary electrode 3, secondary electrode 2, and primary electrode 1 are arranged sequentially from bottom to top on the base 4. The cross-sectional dimensions of the secondary electrode 2 and tertiary electrode 3 are larger than those of the primary electrode 1, and the cross-sectional contours of the secondary electrode 2 and tertiary electrode 3 surround the cross-sectional contour of the primary electrode 1. For example... Figure 2 As shown, the dashed line represents the cross-sectional profile of the secondary electrode 2; the cross-sectional profile of the tertiary electrode 3 can be the same as that of the secondary electrode 2. The primary electrode 1 corresponds to the die hole 62 of the extrusion die, and the secondary electrode 2 corresponds to the rear cutter 63 of the extrusion die.

[0026] Please see Figure 1 In a typical embodiment, the primary electrode 1 has a plate-like (thin plate-like) structure. Electrodes with this structure are more prone to deformation and are therefore more suitable for this solution. The secondary electrode 2 can strengthen and support the primary electrode 1, thereby ensuring the stability of the primary electrode 1.

[0027] Please also refer to Figure 7 , Figure 8 The cross-sectional shape of the primary electrode 1 has a groove-shaped structure, such as a U-shaped structure formed by three side walls. The die hole 62 also has this groove-shaped structure, thus forming a cantilever structure with three sides suspended on the extrusion die. To prevent the cantilever structure from deforming or being damaged under pressure, the extrusion die is preferably a suspension bridge type extrusion die 6. That is, a suspension bridge 61 is provided on the material inlet side of the extrusion die. The suspension bridge 61 spans the cantilever structure and is located above the cantilever structure (material inlet side), thereby protecting the cantilever structure and reducing the pressure it experiences. More specifically, for example, the length direction of the suspension bridge 61 points from the connecting end of the cantilever structure to the free end. The suspension bridge 61 connects to the cantilever structure in the middle, and both ends of the suspension bridge 61 gradually taper on the discharge side, with a gap between it and the die hole 62. The suspension bridge type extrusion die 6 also has a feed inlet, a rear emptying blade 63, etc. The basic structure of this type of extrusion die can refer to existing technology and is not the focus of this utility model improvement, so it will not be described in detail. The main purpose of this invention is to improve the processing scheme of extrusion dies, especially for situations where only electrical discharge machining of die holes can be used, such as for bridge-type extrusion dies.

[0028] Please see Figure 3 The secondary electrode 2 has a primary mounting groove 21 that matches the cross-sectional profile of the primary electrode 1. The primary mounting groove 21 can be, for example, a through hole or a blind hole, and the primary electrode 1 is embedded and fixed in the primary mounting groove 21. The secondary electrode 2 and the primary electrode 1 can be fixed by welding. This solution uses a groove corresponding to the first electrode 1 for insertion and installation, which effectively supports the lower end of the thinner first electrode 1 and prevents deformation.

[0029] Please also refer to Figure 4 The secondary electrode 2 has one or more recessed secondary mounting grooves 22 on its outer surface, and the tertiary electrode 3 has one or more recessed tertiary mounting grooves 31 on its outer surface. The secondary mounting grooves 22 and tertiary mounting grooves 31 are aligned and fitted with a strip 5. A portion of the same strip 5 engages with the secondary mounting groove 22, and another portion engages with the tertiary mounting groove 31. The tertiary electrode 3 and the secondary electrode 2 can optionally be fixed by welding. The strip 5 can optionally be fixed to the tertiary electrode 3 and the secondary electrode 2 by welding.

[0030] Furthermore, the secondary inlay groove 22 and the tertiary inlay groove 31 are connected in the direction from the primary electrode 1 to the base 4 (connected in the vertical direction), and the openings of the cross-sectional shape of the secondary inlay groove 22 and the tertiary inlay groove 31 face outward (in the illustrated embodiment, the openings are three inlay grooves facing the left, right and front sides).

[0031] Preferably, the openings of the secondary inlay groove 22 and the tertiary inlay groove 31 gradually decrease in size from the inside to the outside, and the cross-sectional shape of the inlay groove is triangular or trapezoidal, thereby further ensuring the fitting and fixing effect. Please refer to [link / reference]. Figure 6 The shape of the inlay 5 matches the inlay groove.

[0032] Please see Figure 5 The base 4 has electrode mounting holes 41 that match the cross-sectional profile of the tertiary electrode 3, and the tertiary electrode 3 is embedded and fixed within the electrode mounting holes 41. The tertiary electrode 3 and the base 4 can optionally be welded together. Furthermore, the sidewall of the electrode mounting hole 41 has an inwardly protruding mounting block 42, and the mounting block 42 matches the tertiary mounting groove 31. The tertiary electrode 3 is embedded and fixed within the electrode mounting hole 41, and the mounting block 42 fits into the tertiary mounting groove 31, thereby further ensuring the fitting and fixing effect. The base 4 is used for installation and connection with an EDM machine.

[0033] A set of electrode components is disposed on a base 4, or multiple sets of electrode components are disposed side by side on a base 4; each set of electrode components includes a primary electrode 1, a secondary electrode 2, and a tertiary electrode 3 connected to each other, and the cross-sectional shapes of the primary electrode 1, the secondary electrode 2, and the tertiary electrode 3 correspond to each other; the electrode components of different sets are spaced apart and do not contact each other. This utility model is particularly applicable to schemes with multiple sets of electrode components, thereby enabling the processing of multi-hole dies (extrusion dies with multiple die holes, capable of extruding multiple profiles at once), and in particular, making the efficient processing of bridge-type extrusion dies with multiple die holes possible.

[0034] As a more specific supplementary explanation, the materials of the primary electrode 1, secondary electrode 2, tertiary electrode 3, and base 4 can be different. For example, in the embodiment, the primary electrode 1 and secondary electrode 2 are made of copper, the tertiary electrode 3 and base 4 are made of steel, and the inlay 5 is made of steel.

[0035] In summary, the electrode for extrusion die processing of this utility model can greatly improve both processing accuracy and efficiency. The multi-level inlay structure, with each electrode level supported by the next level, ensures electrode strength and prevents deformation. The fixed positions of each electrode level result in high accuracy of the die hole position and high perpendicularity of the working zone during electrical discharge machining. Furthermore, since multiple electrode inlay holes can be cut into the base, multiple sets of electrodes can be installed on a single base. This solution can also be used for multi-hole extrusion dies designed as bridge-type dies, fully meeting processing accuracy requirements. For multi-hole dies, processing efficiency is doubled in a single electrical discharge machining operation.

[0036] Finally, it should be noted that: the multiple / groups mentioned in this utility model refer to two / groups or more (including two / groups); the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; obviously, the described embodiments are some embodiments of this utility model, not all embodiments; based on the embodiments in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model; in the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other; modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some of the technical features, 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 electrode for processing extrusion dies, characterized in that, It includes a primary electrode (1), a secondary electrode (2), a tertiary electrode (3) and a base (4) connected in sequence. The cross-sectional profiles of the secondary electrode (2) and the tertiary electrode (3) surround the cross-sectional profile of the primary electrode (1). The primary electrode (1) corresponds to the die hole of the extrusion die, and the secondary electrode (2) corresponds to the back empty blade of the extrusion die.

2. The electrode for extrusion die processing according to claim 1, characterized in that, The primary electrode (1) has a plate-like structure.

3. The electrode for extrusion die processing according to claim 1, characterized in that, The cross-sectional shape of the primary electrode (1) has a groove structure, and the extrusion die is a suspension bridge type extrusion die.

4. The electrode for extrusion die processing according to claim 1, characterized in that, The secondary electrode (2) has a primary mounting groove (21) that matches the cross-sectional profile of the primary electrode (1), and the primary electrode (1) is embedded and fixed in the primary mounting groove (21).

5. The electrode for extrusion die processing according to claim 1, characterized in that, The secondary electrode (2) has one or more recessed secondary mounting grooves (22) on its outer side, and the tertiary electrode (3) has one or more recessed tertiary mounting grooves (31) on its outer side. The secondary mounting grooves (22) and the tertiary mounting grooves (31) are aligned and fixed with a strip (5). A part of the same strip (5) is fitted with the secondary mounting groove (22), and another part is fitted with the tertiary mounting groove (31).

6. The electrode for extrusion die processing according to claim 5, characterized in that, The secondary inlay groove (22) and the tertiary inlay groove (31) are connected in the direction from the primary electrode (1) to the base (4), and the openings of the cross-sectional shapes of the secondary inlay groove (22) and the tertiary inlay groove (31) face outward.

7. The electrode for extrusion die processing according to claim 6, characterized in that, The openings of the secondary inlay groove (22) and the tertiary inlay groove (31) gradually decrease in size from the inside to the outside.

8. The electrode for extrusion die processing according to claim 1, characterized in that, The base (4) has an electrode mounting hole (41) that matches the cross-sectional profile of the tertiary electrode (3), and the tertiary electrode (3) is embedded and fixed in the electrode mounting hole (41).

9. The electrode for extrusion die processing according to claim 6, characterized in that, The base (4) has an electrode mounting hole (41) that matches the cross-sectional profile of the three-stage electrode (3). The side wall of the electrode mounting hole (41) has an inwardly protruding mounting block (42), and the mounting block (42) matches the three-stage mounting groove (31). The three-stage electrode (3) is embedded and fixed in the electrode mounting hole (41), and the mounting block (42) fits into the three-stage mounting groove (31).

10. The electrode for processing extrusion dies according to any one of claims 1-9, characterized in that, A set of electrode components is provided on a base (4), or multiple sets of electrode components are arranged side by side on a base (4); each set of electrode components includes a primary electrode (1), a secondary electrode (2), and a tertiary electrode (3) connected to each other, and the cross-sectional shapes of the primary electrode (1), the secondary electrode (2), and the tertiary electrode (3) correspond to each other; there is a gap between different sets of electrode components.

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