Variable circulation blade cover plate groove machining device

Abstract

The invention relates to a variable cycle blade cover plate groove machining device, and belongs to the field of aero-engine manufacturing. Comprising a clamp, an electrode and an electrode chuck, a variable circulation blade is fixedly installed in the clamp, an upper rotating shaft in the variable circulation blade penetrates through the electrode, and the electrode is fixedly installed on the electrode chuck; a plurality of special-shaped electrodes are arranged at the bottom end of the electrode in a winding mode, the special-shaped electrodes are arranged around the upper rotating shaft, the bottom ends of the special-shaped electrodes abut against cover plates in the variable circulation blades, and a plurality of cover plate grooves corresponding to the special-shaped electrodes in shape are formed under the action of electric pulses. According to the machining method, the multiple blade cover plate grooves in the variable circulation blade can be machined at the same time through electric pulses, the tool structure is simplified, the deformation problem caused by machining interference and machining is avoided, and the machining precision and efficiency are improved.

Description

Technical Field

[0001] The invention relates to the field of aviation engine manufacturing, and in particular to a variable cycle blade cover plate groove processing device. Background Art

[0002] The variable cycle blade cover slot plays an important role in aircraft engines. It is an important channel for blade heat dissipation and can enhance the cooling effect. It can provide the blade with the necessary heat dissipation and cooling channels to ensure that the blade works normally under high temperature and high pressure environment.

[0003] The variable circulation blade consists of an upper rotating shaft, a blade body, and a lower rotating shaft. The upper rotating shaft cover has a set of evenly distributed special-shaped grooves that need to be processed. Due to the complex structure of the variable circulation blade, the positioning reference of the lower rotating shaft is very narrow, and the processing stability is poor. Therefore, the processing of the blade cover groove also faces many technical challenges. Common groove processing can be done by CNC milling, laser cutting, and electric pulse processing. During the processing, the processing quality, tool interference, and processing cost issues must be considered. At the same time, there is also the problem of deformation caused by mechanical cutting force, and the stability requirements of the fixture are high. It is not suitable for the processing of complex surfaces. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a variable cycle blade cover plate groove processing device, which can process multiple blade cover plate grooves on a variable cycle blade simultaneously through electric pulses.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a variable cycle blade cover plate groove processing device, comprising: a clamp, an electrode and an electrode chuck, the variable cycle blade is installed and fixed in the clamp, the upper rotating shaft in the variable cycle blade passes through the electrode, and the electrode is installed and fixed on the electrode chuck; a plurality of special-shaped electrodes are wound around the bottom end of the electrode, and the plurality of special-shaped electrodes are arranged around the upper rotating shaft, the bottom end of the special-shaped electrode abuts against the cover plate in the variable cycle blade, and under the action of electric pulses, a plurality of cover plate grooves corresponding to the shape of the special-shaped electrodes are formed.

[0006] The beneficial effects of the present invention are as follows: the multiple special-shaped electrodes wound on the electrode are conducive to processing the cover plate on the variable circulation blade by electrical machining, and are conducive to processing multiple cover plate grooves on the cover plate at the same time, simplifying the tooling structure, avoiding processing interference and deformation problems caused by mechanical processing, and improving processing accuracy and efficiency; the clamp is conducive to stably fixing the variable circulation blade, and only requires one clamping, thereby improving processing efficiency.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the electrode also includes a cylindrical electrode body and an electrode protrusion, a plurality of the special-shaped electrodes are wound around the bottom end of the cylindrical electrode body, the electrode protrusion is arranged on the top end of the cylindrical electrode body, and the electrode protrusion is connected to the electrode clamp.

[0009] The beneficial effects of adopting the above further scheme are: the integrated design of multiple special-shaped electrodes and the cylindrical electrode body is conducive to improving efficiency, improving the consistency of processing dimensions, and reducing the production cost of a single product; the electrode protrusion is conducive to facilitating the electrode to find the correct direction during processing and quickly determine the processing reference.

[0010] Furthermore, the electrode chuck is a block structure with a bump fixing groove at the bottom end, the electrode bump is adapted to be arranged in the bump fixing groove, and a plurality of locking screws are arranged on the outer wall of the electrode chuck, the locking screws pass through the side wall of the electrode chuck and abut against the electrode bump.

[0011] The beneficial effect of adopting the above further solution is that the bump fixing groove cooperates with the locking screw to help fix the electrode bump, thereby fixing the electrode in the electrode clamp.

[0012] Furthermore, the cylindrical electrode body is axially provided with a first upper rotating shaft through hole, the electrode chuck is axially provided with a second upper rotating shaft through hole, and the upper rotating shaft passes through the first upper rotating shaft through hole and the second upper rotating shaft through hole.

[0013] The beneficial effect of adopting the above further scheme is that the first upper rotating shaft perforation and the second upper rotating shaft perforation are conducive to limiting the upper rotating shaft of the variable cycle blade to avoid interference problems, and are also conducive to determining the center line of the machining electrode.

[0014] Furthermore, the fixture includes: two clamping mechanisms, an upper positioning block, a lower positioning block, a blade positioning block, a base plate and a vertical plate; the vertical plate is vertically installed on one side of the base plate, the two clamping mechanisms are installed one-to-one on the upper and lower side walls of the vertical plate, the upper positioning block and the lower positioning block are installed on the vertical plate and correspond one-to-one to the two clamping mechanisms, the blade positioning block is installed on the vertical plate and is arranged between the two clamping mechanisms, and the variable cycle blade is installed and fixed in the fixture.

[0015] The beneficial effect of adopting the above further scheme is that the two clamping mechanisms cooperate with the upper positioning block and the lower positioning block to limit and fix the upper rotating shaft and the lower rotating shaft of the variable circulation blade, and the blade body positioning block is conducive to abutting and fixing the blade body of the variable circulation blade.

[0016] Furthermore, the clamping mechanism includes: two fixed supports, a pressure plate, a butterfly nut and a movable bolt; the two fixed supports are installed one by one on both sides of the vertical plate, one end of the pressure plate is hinged to one of the fixed supports through a pin shaft, and the other end of the pressure plate is a U-shaped block, the movable bolt passes through the U-shaped block, and the bottom end is connected to the other fixed support through a pin shaft, the butterfly nut is installed on the top of the movable bolt, the U-shaped block is arranged between the other fixed support and the butterfly nut, and a V-shaped groove is arranged on the side of the pressure plate close to the vertical plate.

[0017] The beneficial effect of adopting the above further scheme is that the butterfly nut and the movable bolt are conducive to limiting and fixing the other end of the pressure plate, and cooperating with one end of the pressure plate to be hinged with the fixed support, it is conducive to clamping and disassembling the upper and lower rotating shafts of the variable circulation blades.

[0018] Furthermore, the upper positioning block includes: an upper fixed plate, a limiting boss and two upper clamping blocks; the upper fixed plate is installed on the vertical plate, the upper clamping block and the limiting boss are both installed on the upper fixed plate, and the two upper clamping blocks form a V-shaped structure on one side close to each other, and the limiting boss abuts against the top of the cover plate.

[0019] The beneficial effect of adopting the above further scheme is that the V-shaped structure formed by the two upper clamping blocks is conducive to improving the stability when clamping the upper rotating shaft and the lower rotating shaft of the variable circulation blade, and the limiting boss abuts against the top end of the cover plate, which is conducive to limiting the variable circulation blade in the axial direction.

[0020] Furthermore, the lower positioning block includes a lower fixing plate and a lower clamping block, the lower fixing plate is mounted on the vertical plate, and the lower clamping block is a plate-like structure mounted on the lower fixing plate and provided with a V-shaped groove on one side close to the pressure plate.

[0021] The beneficial effect of adopting the above further solution is that the V-shaped groove is provided on the side of the lower clamping block close to the pressure plate, which is beneficial to improving the stability when clamping the upper rotating shaft and the lower rotating shaft of the variable cycle blade.

[0022] Furthermore, the variable circulation blade also includes a lower rotating shaft, the upper rotating shaft in the variable circulation blade is adapted to be arranged between the V-shaped structure formed by the two upper clamping blocks and the V-shaped groove of the pressure plate, and the lower rotating shaft is adapted to be arranged between the V-shaped groove of the lower clamping block and the V-shaped groove of the pressure plate.

[0023] The beneficial effect of adopting the above further scheme is that the V-shaped structure formed by the upper clamping block and the V-shaped groove of the pressure plate are conducive to the adaptation and clamping of the upper rotating shaft of the variable circulation blade, and the V-shaped groove of the lower clamping block and the V-shaped groove of the pressure plate are conducive to the adaptation and clamping of the lower rotating shaft of the variable circulation blade, thereby improving the stability of the variable circulation blade clamping.

[0024] Furthermore, the blade positioning block includes an abutment block fixing plate and a blade abutment block, the abutment block fixing plate is mounted on the vertical plate, and the blade abutment block is a plate-like structure mounted on the abutment block fixing plate and adapted to abut against the blade in the variable cycle blade.

[0025] The beneficial effect of adopting the above further solution is that the blade body abutment block is adaptively abutted with the blade body in the variable circulation blade, which is conducive to further improving the stability of the clamp when clamping the variable circulation blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A front view of the overall structure provided by an embodiment of the present invention;

[0027] Figure 2 A side view of the overall structure provided by an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of the structure of a clamp provided in an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the structure of an electrode provided in an embodiment of the present invention;

[0030] Figure 5 A schematic diagram of the structure of an electrode chuck provided in an embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the structure of a variable circulation blade provided in an embodiment of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Clamp; 2. Electrode; 3. Electrode chuck; 4. Variable circulation blade; 11. Clamping mechanism; 12. Upper positioning block; 13. Lower positioning block; 14. Blade body positioning block; 15. Bottom plate; 16. Vertical plate; 21. Special-shaped electrode; 22. Cylindrical electrode body; 23. Electrode protrusion; 31. Protrusion fixing groove; 32. Second upper rotating shaft through hole; 33. Threaded hole; 34. Locking screw; 41. Upper rotating shaft; 42. Lower rotating shaft Rotating shaft; 43, blade body; 44, cover plate; 111, fixed support; 112, pressure plate; 113, butterfly nut; 114, movable bolt; 121, upper fixing plate; 122, limiting boss; 123, upper clamping block; 131, lower fixing plate; 132, lower clamping block; 141, abutment block fixing plate; 142, blade body abutment block; 221, first upper rotating shaft through hole; 441, cover plate groove; 1121, U-shaped clamping block. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] like Figures 1 to 6 As shown, a variable cycle blade cover plate groove processing device includes: a fixture 1, an electrode 2 and an electrode chuck 3, a variable cycle blade 4 is installed and fixed in the fixture 1, an upper rotating shaft 41 in the variable cycle blade 4 passes through the electrode 2, and the electrode 2 is installed and fixed on the electrode chuck 3; a plurality of special-shaped electrodes 21 are wound around the bottom end of the electrode 2, and the plurality of special-shaped electrodes 21 are arranged around the upper rotating shaft 41, and the bottom end of the special-shaped electrode 21 abuts against the cover plate 44 in the variable cycle blade 4, and under the action of electric pulses, a plurality of cover plate grooves 441 corresponding to the shape of the special-shaped electrodes 21 are formed.

[0036] It should be noted that: in the technical solution of the present invention, the lower side chamfer of the special-shaped electrode 21 is beneficial to reducing the weight of the electrode 2.

[0037] The beneficial effects of the present invention are as follows: the multiple special-shaped electrodes wound on the electrode are conducive to processing the cover plate on the variable circulation blade by electrical machining, and are conducive to processing multiple cover plate grooves on the cover plate at the same time, simplifying the tooling structure, avoiding processing interference and deformation problems caused by mechanical processing, and improving processing accuracy and efficiency; the clamp is conducive to stably fixing the variable circulation blade, and only requires one clamping, thereby improving processing efficiency.

[0038] Preferably, Figure 4As shown, the electrode 2 also includes a cylindrical electrode body 22 and an electrode protrusion 23. The plurality of special-shaped electrodes 21 are wound around the bottom end of the cylindrical electrode body 22. The electrode protrusion 23 is arranged at the top end of the cylindrical electrode body 22. The electrode protrusion 23 is connected to the electrode chuck 3.

[0039] It should be noted that: in the technical solution of the present invention, the electrode protrusion 23 is a rectangular parallelepiped structure.

[0040] The beneficial effects of adopting the above-mentioned preferred scheme are: the integrated design of multiple special-shaped electrodes and the cylindrical electrode body is conducive to improving efficiency, improving the consistency of processing dimensions, and reducing the production cost of a single product; the electrode protrusion is conducive to facilitating the electrode to find the correct direction during processing and quickly determine the processing reference.

[0041] Preferably, Figure 5 As shown, the electrode chuck 3 is a block structure with a bump fixing groove 31 at the bottom end, and the electrode bump 23 is adapted to be arranged in the bump fixing groove 31. A plurality of locking screws 34 are arranged on the outer wall of the electrode chuck 3. The locking screws 34 pass through the side wall of the electrode chuck 3 and abut against the electrode bump 23.

[0042] It should be noted that: in the technical solution of the present invention, a plurality of threaded holes 33 for fixing the electrode chuck 3 on a machine tool are provided at the top end of the electrode chuck 3 .

[0043] The beneficial effect of adopting the above preferred solution is that the protrusion fixing groove cooperates with the locking screw to help fix the electrode protrusion, thereby fixing the electrode in the electrode clamp.

[0044] Preferably, Figure 4 and Figure 5 As shown, the cylindrical electrode body 22 is axially provided with a first upper rotating shaft through hole 221 , the electrode chuck 3 is axially provided with a second upper rotating shaft through hole 32 , and the upper rotating shaft 41 passes through the first upper rotating shaft through hole 221 and the second upper rotating shaft through hole 32 .

[0045] The beneficial effect of adopting the above preferred scheme is that the first upper rotating shaft perforation and the second upper rotating shaft perforation are conducive to limiting the upper rotating shaft of the variable cycle blade to avoid interference problems, and are also conducive to determining the center line of the machining electrode.

[0046] Preferably, Figures 1 to 3As shown, the fixture 1 includes: two clamping mechanisms 11, an upper positioning block 12, a lower positioning block 13, a blade positioning block 14, a base plate 15 and a vertical plate 16; the vertical plate 16 is vertically installed on one side of the base plate 15, the two clamping mechanisms 11 are installed one-to-one on the upper and lower side walls of the vertical plate 16, the upper positioning block 12 and the lower positioning block 13 are installed on the vertical plate 16 and correspond to the two clamping mechanisms 11 one-to-one, the blade positioning block 14 is installed on the vertical plate 16 and is arranged between the two clamping mechanisms 11, and the variable cycle blade 4 is installed and fixed in the fixture 1.

[0047] The beneficial effect of adopting the above preferred solution is that the two clamping mechanisms cooperate with the upper positioning block and the lower positioning block to limit and fix the upper rotating shaft and the lower rotating shaft of the variable circulation blade, and the blade body positioning block is conducive to abutting and fixing the blade body of the variable circulation blade.

[0048] Preferably, Figure 3 As shown, the clamping mechanism 11 includes: two fixed supports 111, a pressure plate 112, a butterfly nut 113 and a movable bolt 114; the two fixed supports 111 are installed one by one on both sides of the vertical plate 16, one end of the pressure plate 112 is hinged to one of the fixed supports 111 through a pin, and the other end of the pressure plate 112 is a U-shaped block 1121, the movable bolt 114 passes through the U-shaped block 1121, and the bottom end is connected to the other fixed support 111 through a pin, the butterfly nut 113 is installed on the top of the movable bolt 114, the U-shaped block 1121 is arranged between the other fixed support 111 and the butterfly nut 113, and a V-shaped groove is arranged on the side of the pressure plate 112 close to the vertical plate 16.

[0049] The beneficial effect of adopting the above-mentioned preferred scheme is that the butterfly nut and the movable bolt are conducive to limiting and fixing the other end of the pressure plate, and cooperating with one end of the pressure plate to be hinged with the fixed support, it is conducive to clamping and disassembling the upper and lower rotating shafts of the variable circulation blades.

[0050] Preferably, Figure 3 As shown, the upper positioning block 12 includes: an upper fixing plate 121, a limiting boss 122 and two upper clamping blocks 123; the upper fixing plate 121 is installed on the vertical plate 16, and the upper clamping block 123 and the limiting boss 122 are both installed on the upper fixing plate 121, and the two upper clamping blocks 123 are close to each other on one side to form a V-shaped structure, and the limiting boss 122 abuts against the top end of the cover plate 44.

[0051] The beneficial effects of adopting the above-mentioned preferred scheme are: the V-shaped structure formed by the two upper clamping blocks is conducive to improving the stability when clamping the upper rotating shaft and the lower rotating shaft of the variable circulation blade, and the limiting boss abuts against the top of the cover plate, which is conducive to limiting the variable circulation blade in the axial direction.

[0052] Preferably, Figure 3 As shown, the lower positioning block 13 includes a lower fixing plate 131 and a lower clamping block 132 . The lower fixing plate 131 is installed on the vertical plate 16 . The lower clamping block 132 is a plate-like structure installed on the lower fixing plate 131 and provided with a V-shaped groove on one side close to the pressing plate 112 .

[0053] The beneficial effect of adopting the above preferred solution is that the V-shaped groove is provided on the side of the lower clamping block close to the pressure plate, which is beneficial to improving the stability when clamping the upper rotating shaft and the lower rotating shaft of the variable cycle blade.

[0054] Preferably, Figure 3 As shown, the variable circulation blade 4 also includes a lower rotating shaft 42, the upper rotating shaft 41 in the variable circulation blade 4 is adapted to be arranged between the V-shaped structure formed by the two upper clamping blocks 123 and the V-shaped groove of the pressure plate 112, and the lower rotating shaft 42 is adapted to be arranged between the V-shaped groove of the lower clamping block 132 and the V-shaped groove of the pressure plate 112.

[0055] The beneficial effects of adopting the above-mentioned preferred scheme are: the V-shaped structure formed by the upper clamping block and the V-shaped groove of the pressure plate are conducive to the adaptation and clamping of the upper rotating shaft of the variable circulation blade, and the V-shaped groove of the lower clamping block and the V-shaped groove of the pressure plate are conducive to the adaptation and clamping of the lower rotating shaft of the variable circulation blade, thereby improving the stability of the variable circulation blade clamping.

[0056] Preferably, Figure 3 As shown, the blade positioning block 14 includes a contact block fixing plate 141 and a blade contact block 142. The contact block fixing plate 141 is installed on the vertical plate 16. The blade contact block 142 is a plate-like structure installed on the contact block fixing plate 141 and adapted to abut against the blade 43 in the variable cycle blade 4.

[0057] The beneficial effect of adopting the above preferred solution is that the blade body abutment block is adaptively abutted with the blade body in the variable circulation blade, which is conducive to further improving the stability of the clamp when clamping the variable circulation blade.

[0058] In a preferred embodiment of the present invention, the sequence of rough machining followed by fine machining is adopted, with a margin left during rough machining and the final size requirement achieved during fine machining. During fine machining, the cross-sectional area of ​​the special-shaped electrode 21 is smaller than the cross-sectional area of ​​the cover plate groove 441, and its shape is consistent with the cover plate groove 441, considering a single-sided discharge gap of 0.05. During rough machining, the cross-sectional area of ​​the special-shaped electrode 21 is smaller than the cross-sectional area of ​​the special-shaped electrode 21 during fine machining, considering a single-sided margin of 0.5.

[0059] Rough machining parameters: pulse width 10; pulse interval 8; current 5; voltage 60.

[0060] Finishing parameters: pulse width 8; pulse interval 10; current 3; voltage 60.

[0061] The rough machining pulse discharge has large energy and can quickly remove a large amount of material, significantly improving machining efficiency; the fine machining can achieve millimeter-level or even higher machining accuracy. The pulse discharge duration is short, and the heat has no time to conduct into the material, making the surface heat-affected zone smaller. If the appropriate equipment and parameters are selected for fine machining, the accuracy can be controlled within 0.02, and the surface roughness can reach Ra1.6μm or above, meeting high-precision requirements.

[0062] Material selection: According to the processing requirements and the use environment, the special-shaped electrode 21 preferably selects graphite material with high density, high strength, high conductivity and good corrosion resistance. The processing efficiency of graphite electrodes is high, which is 2 to 3 times faster than that of copper electrodes, and can greatly shorten the processing cycle; the processing accuracy is high, the quality is stable, and it is easy to process parts of various complex shapes. The expansion coefficient of graphite electrodes is small, and the accuracy and quality of the electrodes are not easily affected by thermal deformation during the processing.

[0063] The present invention has the following positive effects:

[0064] 1. The selection of electrical machining method is conducive to simplifying the tooling structure, avoiding machining interference, clamping in one time, and improving machining accuracy and efficiency.

[0065] 2. The upper and lower positioning blocks, clamping mechanism and blade positioning blocks of the fixture are conducive to stably fixing the blade in the fixture, and the stability of the fixture is improved by using the V-shaped structure.

[0066] 3. The selection of graphite electrode materials is conducive to high processing efficiency and can significantly shorten the processing cycle.

[0067] 4. The electrode is processed in the order of rough machining first and then fine machining. The rough machining pulse discharge energy is large, which can quickly remove a large amount of material and significantly improve the machining efficiency; fine machining can achieve millimeter-level or even higher machining accuracy, significantly improving product quality.

[0068] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A variable cycle blade cover plate groove processing device, characterized in that: include: A fixture (1), an electrode (2) and an electrode clamp (3), wherein a variable circulation blade (4) is mounted and fixed in the fixture (1), an upper rotating shaft (41) in the variable circulation blade (4) passes through the electrode (2), and the electrode (2) is mounted and fixed on the electrode clamp (3); A plurality of special-shaped electrodes (21) are wound around the bottom end of the electrode (2), and the plurality of special-shaped electrodes (21) are arranged around the upper rotating shaft (41). The bottom end of the special-shaped electrode (21) abuts against a cover plate (44) in the variable circulation blade (4), and under the action of an electric pulse, a plurality of cover plate grooves (441) corresponding to the shape of the special-shaped electrode (21) are formed.

2. According to claim 1, a variable cycle blade cover plate groove processing device is characterized in that: The electrode (2) further comprises a cylindrical electrode body (22) and an electrode protrusion (23); a plurality of the special-shaped electrodes (21) are wound around the bottom end of the cylindrical electrode body (22); the electrode protrusion (23) is arranged at the top end of the cylindrical electrode body (22); and the electrode protrusion (23) is connected to the electrode clamp (3).

3. According to claim 2, a variable cycle blade cover plate groove processing device is characterized in that: The electrode chuck (3) is a block-shaped structure with a lug fixing groove (31) at the bottom end, the electrode lug (23) is adapted to be arranged in the lug fixing groove (31), and a plurality of locking screws (34) are arranged on the outer side wall of the electrode chuck (3), and the locking screws (34) pass through the side wall of the electrode chuck (3) and abut against the electrode lug (23).

4. A variable cycle blade cover plate groove processing device according to claim 3, characterized in that: The cylindrical electrode body (22) is axially provided with a first upper rotating shaft through hole (221), the electrode clamp (3) is axially provided with a second upper rotating shaft through hole (32), and the upper rotating shaft (41) passes through the first upper rotating shaft through hole (221) and the second upper rotating shaft through hole (32).

5. The variable cycle blade cover plate groove processing device according to claim 1, characterized in that: The clamp (1) comprises: two clamping mechanisms (11), an upper positioning block (12), a lower positioning block (13), a blade body positioning block (14), a bottom plate (15) and a vertical plate (16); the vertical plate (16) is vertically mounted on one side of the bottom plate (15); the two clamping mechanisms (11) are mounted one-to-one on the upper and lower side walls of the vertical plate (16); the upper positioning block (12) and the lower positioning block (13) are mounted on the vertical plate (16) and correspond one-to-one to the two clamping mechanisms (11); the blade body positioning block (14) is mounted on the vertical plate (16) and is arranged between the two clamping mechanisms (11); and the variable cycle blade (4) is mounted and fixed in the clamp (1).

6. A variable cycle blade cover plate groove processing device according to claim 5, characterized in that: The clamping mechanism (11) comprises: two fixed supports (111), a pressure plate (112), a butterfly nut (113) and a movable bolt (114); the two fixed supports (111) are mounted on both sides of the vertical plate (16) in a one-to-one correspondence; one end of the pressure plate (112) is hinged to one of the fixed supports (111) through a pin shaft; the other end of the pressure plate (112) is a U-shaped clamping block (1121); the movable bolt (114) passes through the U-shaped clamping block (1121) and the bottom end is connected to the other fixed support (111) through a pin shaft; the butterfly nut (113) is mounted on the top of the movable bolt (114); the U-shaped clamping block (1121) is arranged between the other fixed support (111) and the butterfly nut (113); and a V-shaped groove is arranged on one side of the pressure plate (112) close to the vertical plate (16).

7. A variable cycle blade cover plate groove processing device according to claim 6, characterized in that: The upper positioning block (12) comprises: an upper fixing plate (121), a limiting boss (122) and two upper clamping blocks (123); the upper fixing plate (121) is mounted on the vertical plate (16); the upper clamping block (123) and the limiting boss (122) are both mounted on the upper fixing plate (121); the two upper clamping blocks (123) are close to each other on one side to form a V-shaped structure; the limiting boss (122) abuts against the top end of the cover plate (44).

8. The variable cycle blade cover plate groove processing device according to claim 7, characterized in that: The lower positioning block (13) comprises a lower fixing plate (131) and a lower clamping block (132); the lower fixing plate (131) is mounted on the vertical plate (16); the lower clamping block (132) is a plate-like structure mounted on the lower fixing plate (131) and having a V-shaped groove on one side close to the pressing plate (112).

9. The variable cycle blade cover plate groove processing device according to claim 8, characterized in that: The variable circulation blade (4) further comprises a lower rotating shaft (42); the upper rotating shaft (41) in the variable circulation blade (4) is adapted to be arranged between the V-shaped structure formed by the two upper clamping blocks (123) and the V-shaped groove of the pressing plate (112); and the lower rotating shaft (42) is adapted to be arranged between the V-shaped groove of the lower clamping block (132) and the V-shaped groove of the pressing plate (112).

10. The variable cycle blade cover plate groove processing device according to claim 5, characterized in that: The blade body positioning block (14) comprises an abutment block fixing plate (141) and a blade body abutment block (142); the abutment block fixing plate (141) is mounted on the vertical plate (16); the blade body abutment block (142) is a plate-shaped structure mounted on the abutment block fixing plate (141) and adapted to abut against a blade body (43) in the variable cycle blade (4).

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