Special-shaped electrode clamp and electrolytic machining equipment

Abstract

The utility model discloses a special-shaped electrode clamp and an electrolytic machining device, the clamp comprises a first clamp block, a second clamp block, a second clamp block and a third clamp block, the first clamp block is provided with a first positioning surface and a second positioning surface which are perpendicular to each other, and a first positioning structure matched with the outline shape of a first molded surface of a special-shaped electrode is arranged between the first positioning surface and the second positioning surface; the second clamping block is provided with a third positioning surface used for being matched with the first positioning surface and a fourth positioning surface used for being matched with the second positioning surface, and a second positioning structure matched with the contour shape of a second molded surface of the special-shaped electrode is formed between the third positioning surface and the fourth positioning surface; a cavity for clamping the special-shaped electrode is formed between the first clamping block and the second clamping block; the connecting piece is arranged on the first clamping block or the second clamping block and used for being connected with machining equipment; and the locking device is used for locking the first clamping block and the second clamping block.

Description

Technical Field

[0001] This utility model relates to the field of electrolytic machining technology for sealing groove parts, and in particular, to a non-circular electrode fixture. Furthermore, this utility model also relates to an electrolytic machining apparatus including the aforementioned non-circular electrode fixture. Background Technology

[0002] Currently, in the processing of sealing grooves for ring-shaped parts, due to the complex structure and compact size of some special sealing grooves, with a minimum width of only 0.4mm, the part qualification rate is low when using electrical discharge machining, which is not conducive to production requirements. On the one hand, the selection of electrode profile dimensions is unreasonable, and the processing of thin electrodes is also very difficult. On the other hand, the selection of different electrode materials will also affect the part processing.

[0003] like Figures 1 to 3 As shown, the part is a component with a sealing groove, made of... Figure 1 As can be seen, the machining part is a complex irregular groove with a surface width of only 0.4 mm. The sealing groove is machined using electrolytic machining. During the machining process, the quality of the electrode dimensions directly affects the machining quality of the part. To ensure electrode quality, the selection of electrode materials and the determination of the structure need to be carefully considered. Irregularly shaped electrodes are designed according to the machining surface of the part. The materials selected are brass or tungsten carbide. Brass is relatively soft and easily deformed due to manufacturing factors, resulting in a significant difference between the actual electrode and the design drawings. Tungsten carbide has slightly higher hardness, but its structure is limited and difficult to machine. The electrode uses a discharge gap design of 0.06 mm. Figure 4 and Figure 5 As shown, the actual designed electrode is only 0.28 mm thick. Considering processing and clamping, the electrode length reaches more than 40 mm, which makes processing difficult. Moreover, the material is brass, which is very soft and easily deformed. The deformation visible to the naked eye is relatively easy to detect, but some less obvious deformations are not easy to detect directly and need to be measured by measuring equipment. However, the measurement error of thin electrodes is large, resulting in a low part production qualification rate, which is extremely detrimental to part production. If deformation is to be reduced, reducing the length of the electrode is not economical. Utility Model Content

[0004] This utility model provides a fixture for irregularly shaped electrodes and an electrolytic machining equipment to solve the technical problems of irregularly shaped thin-walled electrodes being easily deformed and difficult to detect, and difficult to measure, when applied to the electrolytic machining of sealing groove parts.

[0005] According to one aspect of the present invention, a shaped electrode clamp is provided. The shaped electrode is applied to a sealing groove of a ring-shaped part, and includes, in sequence along its width, a first segment, a second segment, a third segment, a fourth segment, and a fifth segment. The first segment is perpendicular to the second segment, the third segment is at a predetermined angle to the second segment, the fourth segment is parallel to the second segment, and the fifth segment is perpendicular to the fourth segment. The clamp includes:

[0006] The first clamping block has a first positioning surface and a second positioning surface that are perpendicular to each other, and a first positioning structure that matches the contour shape of the first surface of the irregular electrode is provided between the first positioning surface and the second positioning surface.

[0007] The second clamping block has a third positioning surface for engaging with the first positioning surface and a fourth positioning surface for engaging with the second positioning surface, wherein a second positioning structure matching the contour shape of the second profile of the irregular electrode is formed between the third positioning surface and the fourth positioning surface.

[0008] A connector, disposed on the first clamping block or the second clamping block, is used for connection with processing equipment;

[0009] A locking device is used to lock the first clamping block and the second clamping block.

[0010] As a further improvement to the above technical solution:

[0011] The first or second clamping block is symmetrically distributed with connection structures for connecting to the connector.

[0012] The connecting member is a connecting rod, which passes through the first clamping block and extends out from both sides of the first clamping block, or the connecting rod passes through the second clamping block and extends out from both sides of the second clamping block.

[0013] The first surface of the irregular electrode is a side surface away from the fifth segment of the irregular electrode, and the second positioning structure includes a positioning groove formed in the second clamping block, the width of which is greater than the thickness of the fifth segment of the irregular electrode.

[0014] The locking device includes a first screw corresponding to the first positioning surface and the third positioning surface, and a second screw corresponding to the second positioning surface and the fourth positioning surface.

[0015] A plurality of first screws are evenly distributed on the clamping block along the length direction of the irregular electrode; a plurality of second screws are evenly distributed on the clamping block along the length direction of the irregular electrode.

[0016] The thickness of the first positioning segment is 0.28 mm.

[0017] The distance between the first positioning structure and the second positioning structure matches the thickness of the irregular electrode when the locking device locks the first clamping block and the second clamping block.

[0018] The connector is located on the side away from the clamping electrode.

[0019] According to another aspect of the present invention, an electrolytic processing apparatus is also provided, which includes the aforementioned irregular electrode fixture.

[0020] This utility model has the following beneficial effects:

[0021] The first and second clamping blocks of this irregular electrode fixture are respectively equipped with positioning surfaces and positioning structures. During the manufacturing process, they meet certain geometric tolerances and dimensional requirements, and pass quality inspection to meet accuracy requirements. After the irregular electrode is placed in and the two clamping blocks are locked by the locking device, the connecting parts are connected to the processing equipment for processing. The first and second positioning structures respectively conform to the two shaped surfaces of the irregular electrode, which can stably clamp the irregular electrode and constrain it to prevent deformation, avoid the influence of clamping errors, and improve the processing effect of the sealing groove. At the same time, this fixture has a calibration function for irregular electrodes, and can help judge whether the electrode is qualified based on the clamping condition, avoiding the use of unqualified electrodes for part processing, thus improving the part qualification rate. It also has a certain degree of correction function to realize electrode calibration. On the other hand, this fixture is easy to disassemble and assemble, and the electrode can be easily replaced after wear, making it convenient to operate.

[0022] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0024] Figure 1 This is a partial structural diagram of a sealing groove component in existing technology. Figure 1 ;

[0025] Figure 2 yes Figure 1 E-direction view;

[0026] Figure 3 This is a partial structural diagram of a sealing groove component in existing technology. Figure 2 ;

[0027] Figure 4 This is a front view of the irregularly shaped electrode according to a preferred embodiment of the present invention;

[0028] Figure 5 This is a top view of the irregularly shaped electrode of a preferred embodiment of the present invention;

[0029] Figure 6 This is a front view of the clamping state of the preferred embodiment of this utility model;

[0030] Figure 7 This is a top view of the clamping state of a preferred embodiment of the present invention.

[0031] Legend:

[0032] 1. First clamping block; 11. First positioning surface; 12. Second positioning surface; 13. First positioning structure; 14. Connecting structure; 2. Second clamping block; 21. Third positioning surface; 22. Fourth positioning surface; 23. Second positioning structure; 231. Positioning groove; 3. Irregularly shaped electrode; 4. Connector; 5. First screw; 6. Second screw. Detailed Implementation

[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0034] like Figures 6 to 7 As shown, the irregular electrode fixture of this embodiment uses an irregular electrode 3 applied to the sealing groove of a ring-shaped part. Along its width, it includes a first segment, a second segment, a third segment, a fourth segment, and a fifth segment. The first segment is perpendicular to the second segment, the third segment is at a preset angle to the second segment, the fourth segment is parallel to the second segment, and the fifth segment is perpendicular to the fourth segment. The connections between each segment are rounded / filled. The fixture includes:

[0035] The first clamping block 1 has a first positioning surface 11 and a second positioning surface 12 that are perpendicular to each other. A first positioning structure 13 that matches the contour shape of the first surface of the irregular electrode 3 is provided between the first positioning surface 11 and the second positioning surface 12.

[0036] The second clamping block 2 has a third positioning surface 21 for cooperating with the first positioning surface 11 and a fourth positioning surface 22 for cooperating with the second positioning surface 12. A second positioning structure 23 matching the contour shape of the second profile of the irregular electrode 3 is formed between the third positioning surface 21 and the fourth positioning surface 22. A cavity for clamping the irregular electrode 3 is formed between the first clamping block 1 and the second clamping block 2.

[0037] Connector 4 is disposed on the first clamping block 1 or the second clamping block 2 and is used to connect with the processing equipment;

[0038] A locking device is used to lock the first clamping block 1 and the second clamping block 2.

[0039] The fifth segment can be the positioning segment of the irregular electrode 3, located outside the sealing groove and mating with the end face of the part;

[0040] It is understandable that the first clamping block 1 and the second clamping block 2 of this irregular electrode fixture are respectively equipped with positioning surfaces and positioning structures. During the manufacturing process, they meet certain form and position tolerance requirements and dimensional requirements, and pass the quality inspection to meet the accuracy requirements. After the irregular electrode 3 is placed in and the two clamping blocks are locked by the locking device, the connecting piece 4 is connected to the processing equipment for processing. The first positioning structure 13 and the second positioning structure 23 respectively fit the two shaped surfaces of the positioning irregular electrode 3, which can stably clamp the irregular electrode 3 and constrain it to prevent deformation, avoid the influence of clamping errors, and improve the processing effect of the sealing groove. At the same time, this fixture has a calibration function for the irregular electrode 3, and assists in judging whether the electrode is qualified according to the clamping situation, avoiding the use of unqualified electrodes for part processing, improving the part qualification rate, and also has a certain degree of correction function to realize electrode calibration. On the other hand, this fixture is easy to disassemble and assemble, and the electrode is easy to replace after wear, making the operation convenient.

[0041] In this embodiment, the two ends of the cavity are open, so that electrodes can be clamped on both sides of the fixture; the connector 4 is a connecting rod, and the first clamping block 1 or the second clamping block 2 is symmetrically provided with a connecting structure 14 for connecting with the connector 4. The connecting structure 14 can be a threaded hole; wherein, the connector 4 is located on the side away from the clamping electrode; that is, the connector 4 can be connected to both sides of the fixture according to the electrode clamping direction, so as to realize the matching change of the electrode clamping position, thereby realizing the processing of both sides of the sealing groove part respectively;

[0042] In some embodiments, the connecting member 4 may be a connecting rod, which passes through the first clamping block 1 and extends out from both sides of the first clamping block 1, or the connecting rod passes through the second clamping block 2 and extends out from both sides of the second clamping block 2, which has the same effect.

[0043] In this embodiment, the first surface of the irregular electrode 3 is the side surface away from the fifth segment of the irregular electrode 3. The second positioning structure 23 includes a positioning groove 231 opened in the second clamping block 2. The width of the positioning groove 231 is greater than the thickness of the fifth segment of the irregular electrode 3. By opening a positioning groove 231 with a thickness greater than the thickness of the fifth segment, the electrode can be placed more easily on the second positioning structure 23. When locking the clamp, it can gradually close and position and correct itself, making the clamp more applicable and avoiding the inability to put in electrodes with slight deformation.

[0044] In this embodiment, the locking device includes a first screw 5 provided corresponding to the first positioning surface 11 and the third positioning surface 21, and a second screw 6 provided corresponding to the second positioning surface 12 and the fourth positioning surface 22. It is easy to disassemble and assemble, and the clamping force is uniform.

[0045] Among them, multiple first screws 5 are evenly distributed on the clamping block along the length direction of the irregular electrode 3; multiple second screws 6 are evenly distributed on the clamping block along the length direction of the irregular electrode 3, ensuring uniform and stable clamping force.

[0046] In this embodiment, the thickness of the first positioning segment is 0.28 mm, the distance between the first positioning structure 13 and the third positioning surface 21 is matched with the thickness of the first positioning segment, the remaining parts of the first positioning structure 13 and the second positioning structure 23 are matched with the thickness of the second, third and fourth segments of the electrode respectively, and the fifth segment extends into the positioning groove 231.

[0047] It should be understood that the distance between the first positioning structure 13 and the second positioning structure 23 matches the thickness of the irregular electrode 3 when the locking device locks the first clamping block 1 and the second clamping block 2. Furthermore, the first positioning structure 13 and the second positioning structure 23 do not need to be rounded, and only need to ensure that the mating gaps at each location match the thickness of the electrode at each location.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A shaped electrode clamp, wherein the shaped electrode (3) is applied to the sealing groove of a ring-shaped part, and comprises, in sequence along the width direction, a first segment, a second segment, a third segment, a fourth segment, and a fifth segment, wherein the first segment is perpendicular to the second segment, the third segment is at a predetermined angle to the second segment, the fourth segment is parallel to the second segment, and the fifth segment is perpendicular to the fourth segment, characterized in that, The clamp includes: The first clamping block (1) has a first positioning surface (11) and a second positioning surface (12) that are perpendicular to each other. A first positioning structure (13) matching the contour shape of the first surface of the irregular electrode (3) is provided between the first positioning surface (11) and the second positioning surface (12). The second clamp (2) has a third positioning surface (21) for engaging with the first positioning surface (11) and a fourth positioning surface (22) for engaging with the second positioning surface (12), and a second positioning structure (23) matching the contour shape of the second surface of the irregular electrode (3) is formed between the third positioning surface (21) and the fourth positioning surface (22). A connector (4) is disposed on the first clamping block (1) or the second clamping block (2) for connecting to the processing equipment; A locking device is used to lock the first clamping block (1) and the second clamping block (2).

2. The irregularly shaped electrode clamp according to claim 1, characterized in that, The first clamping block (1) or the second clamping block (2) is symmetrically provided with a connection structure (14) for connecting with the connector (4).

3. The irregularly shaped electrode clamp according to claim 1, characterized in that, The connecting member (4) is a connecting rod, which passes through the first clamping block (1) and extends out from both sides of the first clamping block (1), or the connecting rod passes through the second clamping block (2) and extends out from both sides of the second clamping block (2).

4. The irregularly shaped electrode clamp according to claim 1, characterized in that, The first surface of the irregular electrode (3) is a side surface away from the fifth segment of the irregular electrode (3). The second positioning structure (23) includes a positioning groove (231) opened in the second clamping block (2). The width of the positioning groove (231) is greater than the thickness of the fifth segment of the irregular electrode (3).

5. The irregularly shaped electrode clamp according to claim 1, characterized in that, The locking device includes a first screw (5) provided corresponding to the first positioning surface (11) and the third positioning surface (21) and a second screw (6) provided corresponding to the second positioning surface (12) and the fourth positioning surface (22).

6. The irregularly shaped electrode clamp according to claim 5, characterized in that, Multiple first screws (5) are evenly distributed on the clamping block along the length direction of the irregular electrode (3); multiple second screws (6) are evenly distributed on the clamping block along the length direction of the irregular electrode (3).

7. The irregularly shaped electrode clamp according to claim 1, characterized in that, The thickness of the first positioning segment is 0.28 mm.

8. The irregularly shaped electrode clamp according to claim 1, characterized in that, The distance between the first positioning structure (13) and the second positioning structure (23) matches the thickness of the irregular electrode (3) when the locking device locks the first clamping block (1) and the second clamping block (2).

9. The irregularly shaped electrode clamp according to claim 2, characterized in that, The connector (4) is located on the side away from the clamping electrode.

10. An electrolytic processing apparatus, characterized in that, The application uses the irregularly shaped electrode clamp as described in any one of claims 1-9.

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