An electrode chuck device for EDM of turbine blades

Abstract

This invention relates to an electrode chuck device for EDM of turbine blades, comprising a gantry assembly, a first positioning assembly, a first electrode assembly, a second positioning assembly, and a second electrode assembly. The first positioning assembly and the second positioning assembly are respectively mounted on both ends of the gantry assembly, and the first electrode assembly and the second electrode assembly are respectively mounted on their sidewalls. This invention quickly and stably clamps turbine blades, facilitating EDM operations, and features a stable structure and simple operation.

Description

Technical Field

[0001] This invention relates to the field of turbine blade manufacturing technology, and in particular to an electrode chuck device for electrical discharge machining of turbine blades. Background Technology

[0002] Electrical pulse machining of the internal cavity of complex hollow turbine blades is an important machining method for machining deep and narrow grooves in aero-engine blades. It is a machining method that utilizes the pulsed discharge between the turbine blade and the copper electrode in a specified oil medium to induce electro-corrosion in the part.

[0003] Electrical pulse machining (EDM) for deep and narrow grooves in multi-unit complex hollow turbine blades is widely used in the aerospace and aero-engine fields due to its suitability for machining difficult-to-cut materials, adaptability to the needs of special and complex parts, and excellent performance in terms of minimal mechanical and thermal impact. However, existing EDM methods for multi-unit complex hollow turbine blades suffer from low processing efficiency, high frequency of electrode replacement, and low production frequency. Consequently, the production efficiency of mass-produced multi-unit complex hollow turbine blades is significantly affected by the number of EDM stations, reducing the speed of EDM and hindering mass production.

[0004] Therefore, those skilled in the art are dedicated to developing an electrode chuck device for EDM of turbine blades that can quickly and stably clamp turbine blades and facilitate EDM operations, while also being structurally stable and easy to operate. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electrode chuck device for EDM of turbine blades, which can quickly and stably clamp turbine blades and facilitate EDM operation, and has a stable structure and is easy to operate.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an electrode chuck device for EDM of turbine blades, comprising a gantry assembly, a first positioning assembly, a first electrode assembly, a second positioning assembly, and a second electrode assembly; the first positioning assembly and the second positioning assembly are respectively installed at both ends of the gantry assembly, and the first electrode assembly and the second electrode assembly are respectively installed on the side walls of the first positioning assembly and the second positioning assembly.

[0007] The beneficial effects of the present invention are: the first positioning component and the second positioning component are used to position the left turbine blade and the right turbine blade respectively. After the turbine blade is positioned and fixed, the left turbine blade and the right turbine blade are electrically machined by the first electrode component and the second electrode component respectively. The positioning and clamping are convenient and the stability is high, which further improves the processing efficiency.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the gantry assembly includes a support arm, the middle of which is connected to a clamping rod via a horizontal cylindrical pin, and the two ends of the support arm are respectively connected to the first positioning assembly and the second positioning assembly.

[0010] The advantage of adopting the above-mentioned further solution is that the chuck linkage is easy to connect with the robot or clamping assembly, thereby quickly operating the first positioning assembly and the second positioning assembly to clamp the turbine blades.

[0011] Furthermore, the first positioning component includes a first positioning block, which is fixedly connected to the lower side of the end of the support arm;

[0012] The second positioning component includes a second positioning block, which is fixedly connected to the lower side of the other end of the support arm.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that the first positioning block and the second positioning block are used to position the left turbine blade and the right turbine blade, respectively.

[0014] Furthermore, the first electrode assembly includes a first electrode sheet, with two first electrode sheets located on both sides of the first positioning block and fixed to both sides of the first positioning block by a first clamping block.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the first electrode sheet is used for electrical machining of the left turbine blade.

[0016] Furthermore, the second electrode assembly includes two second electrode plates, which are located on both sides of the second positioning block and fixed to both sides of the second positioning block by a second clamping block.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the second electrode sheet is used for electrical machining of the right turbine blade.

[0018] Furthermore, both the first electrode sheet and the second electrode sheet have curved surfaces that conform to the turbine blades.

[0019] The advantage of adopting the above-mentioned further solution is that the curved surface is used to fit with the turbine blade, which facilitates subsequent electrical discharge machining operations.

[0020] Furthermore, both the first positioning block and the second positioning block have clearance cavities.

[0021] The advantage of adopting the above-mentioned further solution is that the avoidance cavity is used to avoid the turbine blades, which is conducive to the positioning block to position and fix the turbine blades. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of a specific embodiment of the present invention;

[0023] Figure 2 This is a side view of a specific embodiment of the present invention;

[0024] Figure 3 This is a top view of a specific embodiment of the present invention.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Gantry assembly; 2. First positioning assembly; 3. First electrode assembly; 4. Second positioning assembly; 5. Second electrode assembly; 6. Support arm; 7. Horizontal cylindrical pin; 8. Clamping rod; 9. First positioning block; 10. Second positioning block; 11. First electrode plate; 12. First clamping block; 13. Second electrode plate; 14. Second clamping block; 15. Clearance cavity. Detailed Implementation

[0027] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "inner," "outer," "circumferential," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] like Figure 1 , Figure 2 and Figure 3As shown, an electrode chuck device for EDM of turbine blades includes a gantry assembly 1, a first positioning assembly 2, a first electrode assembly 3, a second positioning assembly 4, and a second electrode assembly 5. The first positioning assembly 2 and the second positioning assembly 4 are respectively installed at both ends of the gantry assembly 1, and the first electrode assembly 3 and the second electrode assembly 5 are respectively installed on the side walls of the first positioning assembly 2 and the second positioning assembly 4.

[0032] In this invention, the first positioning component 2 and the second positioning component 4 are used to position the left turbine blade and the right turbine blade, respectively. After the turbine blade is positioned and fixed, the left turbine blade and the right turbine blade are electrically machined by the first electrode component 3 and the second electrode component 5, respectively. The positioning and clamping are convenient and the stability is high, which further improves the processing efficiency.

[0033] In some embodiments, the gantry assembly 1 includes a support arm 6. A chuck link 8 is connected to the middle of the support arm 6 via a transverse cylindrical pin 7. The chuck link 8 is used to connect to a robotic arm or a clamping assembly, thereby quickly operating the first positioning assembly 2 and the second positioning assembly 4 to clamp the turbine blades, facilitating subsequent electrical discharge machining operations. The first positioning assembly 2 and the second positioning assembly 4 are respectively connected to both ends of the support arm 6. Specifically, a first horizontal bar and a second horizontal bar are fixedly connected to both ends of the support arm 6. The first horizontal bar and the second horizontal bar are respectively threaded to the top of the first positioning assembly 2 and the second positioning assembly 4 via connecting bolts, making the first positioning assembly 2 and the second positioning assembly 4 symmetrical along the transverse cylindrical pin 7.

[0034] In another embodiment, the first positioning component 2 includes a first positioning block 9, which is fixedly connected to the lower side of the end of the support arm 6. The second positioning component 4 includes a second positioning block 10, which is fixedly connected to the lower side of the other end of the support arm 6. Both the first positioning block 9 and the second positioning block 10 have a clearance cavity 15, making the first positioning block 9 and the second positioning block 10 approximately "U"-shaped. The lower sides of the first positioning block 9 and the second positioning block 10 are used to position and fix the turbine blades.

[0035] In some embodiments, the first electrode assembly 3 includes two first electrode plates 11, located on both sides of the first positioning block 9 and fixed to both sides of the first positioning block 9 by a first clamping block 12 and fastening bolts. The second electrode assembly 5 includes two second electrode plates 13, located on both sides of the second positioning block 10 and fixed to both sides of the second positioning block 10 by a second clamping block 14 and fastening bolts. The first electrode plates 11 are used to process the deep and narrow grooves of the turbine blade through electro-erosion. To further improve the processing accuracy, both the first electrode plates 11 and the second electrode plates 13 have curved surfaces that fit with the turbine blade, so that after the first electrode plates 11 and the second electrode plates 13 are in contact with the surface of the turbine blade, the electrode plates can accurately electro-machine the deep and narrow grooves of the turbine blade.

[0036] The working principle of this invention is as follows: The robot arm or clamping device pushes the gantry assembly 1 so that the first positioning component 2 and the second positioning component 4 respectively position and fix the left turbine blade and the right turbine blade. The switch of the electric pulse equipment is pressed and the corresponding electric pulse processing parameters are input. The first electrode plate 11 and the second electrode plate 13 approach the deep and narrow groove of the multi-unit complex hollow turbine blade under the Y-axis movement of the electric pulse equipment. Under the action of electro-corrosion, the deep and narrow groove of the multi-unit complex hollow turbine blade is simultaneously corroded and processed by the first electrode plate 11 and the second electrode plate 13. During the processing, the entire electrode chuck is in a state of reciprocating motion parallel to the Y-axis.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electrode chuck device for EDM of turbine blades, characterized in that: It includes a gantry assembly (1), a first positioning assembly (2), a first electrode assembly (3), a second positioning assembly (4), and a second electrode assembly (5); The first positioning component (2) and the second positioning component (4) are respectively installed at both ends of the gantry assembly (1), and the first electrode assembly (3) and the second electrode assembly (5) are respectively installed on the side walls of the first positioning component (2) and the second positioning component (4); The gantry assembly (1) includes a support arm (6), and a clamping rod (8) is connected to the middle of the support arm (6) by a horizontal cylindrical pin (7). The first positioning assembly (2) and the second positioning assembly (4) are respectively connected to both ends of the support arm (6). The first positioning component (2) includes a first positioning block (9), which is fixedly connected to the lower side of the end of the support arm (6); The second positioning component (4) includes a second positioning block (10), which is fixedly connected to the lower side of the other end of the support arm (6); The first electrode assembly (3) includes a first electrode sheet (11), two first electrode sheets (11) are located on both sides of the first positioning block (9) and are fixed on both sides of the first positioning block (9) by a first clamping block (12); The second electrode assembly (5) includes a second electrode sheet (13), two second electrode sheets (13) are located on both sides of the second positioning block (10) and are fixed on both sides of the second positioning block (10) by a second clamping block (14); Both the first electrode sheet (11) and the second electrode sheet (13) have curved surfaces that fit into the turbine blades; Both the first positioning block (9) and the second positioning block (10) have a clearance cavity (15).

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