A fixing device for EDM of casting blades
By designing a fixing device for EDM of casting blades, the problem of needing to fix and process the middle part of turbine blades in four stages was solved, achieving efficient multi-faceted processing and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI AOLIANBO PRECISION MASCH CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, the middle part of turbine blades needs to be fixed and processed in four stages, resulting in low production efficiency and high cost.
A fixing device for EDM of casting blades was designed, including a head, tail and middle fixing mechanism, which can simultaneously fix the head, middle and tail of the casting blades to realize EDM of the top surface, bottom surface, two front sides and two rear sides of the middle part.
This device reduces the number of times fixed tooling needs to be changed, improves processing efficiency, and lowers production costs.
Smart Images
Figure CN224587142U_ABST
Abstract
Description
Technical fields:
[0001] This utility model belongs to the field of turbine blade manufacturing technology, and specifically relates to a fixing device for electrical discharge machining of casting blades. Background technology:
[0002] Turbine blades are machined from castings, and the middle section of the blade requires electrical discharge machining (EDM) during the machining process. Since the middle section of the blade includes a top surface, a bottom surface, two front sides, and two rear sides, conventional processes require machining in four separate steps using four corresponding tooling fixtures. This not only reduces production efficiency but also increases production costs.
[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility model content:
[0004] The purpose of this utility model is to provide a fixing device for EDM of casting blades, thereby overcoming the defects in the prior art.
[0005] To achieve the above objectives, this utility model provides a fixing device for EDM machining of casting blades, including a table, a head fixing mechanism, a middle fixing mechanism, and a tail fixing mechanism. The table is provided with the head fixing mechanism, the middle fixing mechanism, and the tail fixing mechanism. The head fixing mechanism is adapted to the head of the casting blade, the middle fixing mechanism is adapted to the middle part of the casting blade, and the tail fixing mechanism is adapted to the tail of the casting blade. A machining hole is provided on the table, located at the middle fixing mechanism, and its position corresponds to the bottom surface of the middle part of the casting blade. The head fixing mechanism includes a head support and a head clamping component, the gap between the head support and the head clamping component matching the size of the front end of the casting blade head. The tail fixing mechanism... The head fixing mechanism includes a tail support and a tail positioning component. The tail support is located below the tail end of the casting blade, and the tail positioning component is located on one side of the tail end of the casting blade. The middle fixing mechanism includes a middle support, a middle clamping component, and a middle positioning component. The middle support is located around the machining hole, and a corresponding middle clamping component is provided above the middle support on one side of the machining hole. The gap between the middle clamping component and the corresponding middle support is matched with the size of the left side of the middle part of the casting blade. The middle positioning component is located on the side of the middle part of the casting blade. By fixing the casting blade through the head fixing mechanism, the middle fixing mechanism, and the tail fixing mechanism, the top surface, bottom surface, two front sides, and two rear sides of the middle part of the casting blade can be EDM machined on the fixing device without changing the fixing fixture.
[0006] Preferably, in the technical solution, the head support includes a first head support block and a second head support block. The first head support block and the second head support block are inclined at the same angle on the table surface, and the inclination angle of the first head support block and the second head support block is the same as the inclination angle of the front end of the casting blade head.
[0007] Preferably, in the technical solution, the head clamping component includes a head clamping bracket and a head clamping block. The head clamping block is provided on the head clamping bracket and is located above the first head support block and the second head support block. The bottom surface of the head clamping block is an inclined surface with the same inclination angle as the inclination angle of the front end of the casting blade. The gap between the head clamping block and the first head support block and the second head support block forms a fixed position for the front end of the casting blade.
[0008] Preferably, in the technical solution, the tail support component includes a tail support block and a tail support point. The tail support block is set on the platform, and the tail support point is provided on the tail support block. The tail support point contacts the lower part of the tail end of the casting blade.
[0009] Preferably, in the technical solution, the tail positioning component includes a tail positioning block and a tail positioning point. The tail positioning block is set on the table, and the tail positioning point is provided on the tail positioning block. The tail positioning point contacts one side of the tail end of the casting blade, and the extension line of the tail positioning point intersects perpendicularly with the extension line of the tail support point.
[0010] Preferably, in the technical solution, the central support component includes a first central support block, a second central support block, a first central support column, a second central support column, a first central support point, and a second central support point. The first central support block and the second central support block are respectively provided on the outer sides of two corners on one side of the machining hole, and the first central support column and the second central support column are respectively provided on the outer sides of two corners on the other side of the machining hole. The first central support block and the second central support block are respectively provided on the first central support block and the second central support block. The first central support block and the second central support block have different heights, and the line connecting the first central support point and the second central support point has an inclination angle of α. The first central support column and the second central support column have different heights, and the first central support column and the second central support column are inclined. The inclination angle of the first central support column and the second central support column is β, and α and β are the same as the inclination angle of the middle part of the casting blade.
[0011] Preferably, in the technical solution, the central clamping component includes a first central clamping frame, a second central clamping frame, a first central clamping block, and a second central clamping block. The first and second central clamping frames are disposed on one side of the machining hole. The first and second central clamping frames are respectively provided with the first and second central clamping blocks. The bottom surfaces of the first and second central clamping blocks are inclined surfaces with the same inclination angle as the central inclination angle of the casting blade. The first and second central clamping frames have different heights. The first central clamping frame is correspondingly disposed with the first central support column, and the second central clamping frame is correspondingly disposed with the second central support column. The gaps between the first and second central clamping blocks and their corresponding first and second central support columns match the dimensions of the left side of the central part of the casting blade.
[0012] Preferably, in the technical solution, the central positioning component includes a front side positioning block, a front side positioning point, a left side positioning block, and a left side positioning point. The front side positioning block is movably mounted on the table, and a front side positioning point is provided on the front side positioning block, with the front side positioning point facing the front side of the middle part of the casting blade. The left side positioning block is mounted on the table, and a left side positioning point is provided on the left side positioning block, with the left side positioning point facing the left side of the middle part of the casting blade.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] By fixing the head, middle and tail of the casting blade with a fixing device, it is not necessary to change different fixing fixtures when machining the top surface, bottom surface, two front sides and two rear sides of the middle part of the casting blade, which improves machining efficiency and reduces production costs. Attached image description:
[0015] Figure 1 This is a schematic diagram of the structure of the electrical discharge machining fixing device for casting blades according to this utility model;
[0016] Figure 2 This is a front view of the electrical discharge machining (EDM) fixing device for casting blades according to this utility model.
[0017] Figure 3 This is a top view of the electrical discharge machining (EDM) fixing device for casting blades according to this utility model;
[0018] Figure 4 This is a diagram showing the usage status of the electrical discharge machining (EDM) fixing device for casting blades according to this utility model. Detailed implementation method:
[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.
[0020] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.
[0021] like Figure 1-3 As shown, a fixing device for EDM of a casting blade includes a table 1, a head fixing mechanism 2, a middle fixing mechanism 3, and a tail fixing mechanism 4. The table 1 is provided with the head fixing mechanism 2, the middle fixing mechanism 3, and the tail fixing mechanism 4. The head fixing mechanism 2 is adapted to the head of the casting blade 5, the middle fixing mechanism 3 is adapted to the middle part of the casting blade 5, and the tail fixing mechanism 4 is adapted to the tail of the casting blade 5. A machining hole 10 is provided on the table 1. The machining hole 10 is located at the middle fixing mechanism 3, and the position of the machining hole 10 corresponds to the machining bottom surface of the middle part of the casting blade 5.
[0022] The head fixing mechanism 2 includes a head support and a head clamping component. The head support includes a first head support block 20 and a second head support block 21, which are inclined at the same angle on the table 1. The inclination angle of the first head support block 20 and the second head support block 21 is the same as the inclination angle of the front end of the casting blade 5. The head clamping component includes a head clamping bracket 22 and a head clamping block 23. The head clamping block 23 is provided on the head clamping bracket 22 and is located above the first head support block 20 and the second head support block 21. The bottom surface of the head clamping block 23 is an inclined surface with the same inclination angle as the front end of the casting blade 5. The gap between the head clamping block 23 and the first head support block 20 and the second head support block 21 forms a fixing position for the front end of the casting blade 5.
[0023] The tail fixing mechanism 4 includes a tail support and a tail positioning component. The tail support includes a tail support block 40 and a tail support point 41. The tail support block 40 is set on the platform 1, and the tail support point 41 is set on the tail support block 40. The tail support point 41 contacts the lower part of the tail end of the casting blade 5. The tail positioning component includes a tail positioning block 42 and a tail positioning point 43. The tail positioning block 42 is set on the platform 1, and the tail positioning point 43 is set on the tail positioning block 42. The tail positioning point 43 contacts one side of the tail end of the casting blade 5, and the extension line of the tail positioning point 43 intersects perpendicularly with the extension line of the tail support point 41.
[0024] The central fixing mechanism 3 includes a central support member 30, a central clamping member 31, and a central positioning member 32. The central support member 30 includes a first central support block 300, a second central support block 301, a first central support column 302, a second central support column 303, a first central support point 304, and a second central support point 305. The first central support block 300 and the second central support block 301 are respectively provided on the outer sides of two corners on one side of the machining hole 10, and the first central support column 302 and the second central support column 303 are respectively provided on the outer sides of two corners on the other side of the machining hole 10. The first central support point 305 is respectively provided on the first central support block 300 and the second central support block 301. 04. The second central support point 305, the first central support block 300 and the second central support block 301 have different heights, the line connecting the first central support point 304 and the second central support point 305 has an inclination angle of α, the first central support column 302 and the second central support column 303 have different heights, the first central support column 302 and the second central support column 303 are inclined, the inclination angle of the first central support column 302 and the second central support column 303 is β, α and β are the same as the inclination angle of the middle of the casting blade 5; the central clamping component 31 includes a first central clamping frame 310, a second central clamping frame 311, a first central clamping block 312, and a second central clamping block 313, the first central... The first middle clamping frame 310 and the second middle clamping frame 311 are arranged on one side of the machining hole 10. The first middle clamping frame 310 and the second middle clamping frame 311 are respectively provided with a first middle clamping block 312 and a second middle clamping block 313. The bottom surfaces of the first middle clamping blocks 312 and the second middle clamping blocks 313 are inclined surfaces, with the inclination angle being the same as the inclination angle of the middle part of the casting blade 5. The first middle clamping frame 310 and the second middle clamping frame 311 have different heights. The first middle clamping frame 310 is correspondingly arranged with the first middle support column 302, and the second middle clamping frame 311 is correspondingly arranged with the second middle support column 303. The first middle clamping blocks 312 and the second middle clamping blocks 313 are correspondingly arranged with the first middle support column 302. The gap between the first central support column 302 and the second central support column 303 matches the size of the left side of the middle part of the casting blade 5; the central positioning component 32 includes a front side positioning block 320, a front side positioning point 321, a left side positioning block 322, and a left side positioning point 323. The front side positioning block 320 is movably mounted on the platform 1. The front side positioning block 320 is provided with a front side positioning point 321, which faces the front side of the middle part of the casting blade 5. The left side positioning block 322 is mounted on the platform 1. The left side positioning block 322 is provided with a left side positioning point 323, which faces the left side of the middle part of the casting blade 5.
[0025] like Figure 4As shown, the casting blade 5 is placed on a fixed fixture. The head of the casting blade 5 is fixed by the head fixing mechanism 2, the middle part of the casting blade 5 is fixed by the middle fixing mechanism 3, and the tail part of the casting blade 5 is fixed by the tail fixing mechanism 4. When machining the top surface, bottom surface, two front sides and two rear sides of the middle part of the casting blade 5, there is no need to change different fixed fixtures, which improves machining efficiency and reduces production costs.
[0026] The description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.
Claims
1. A casting vane electro-discharge machining fixture, characterized by: The system includes a platform, a head fixing mechanism, a middle fixing mechanism, and a tail fixing mechanism. The platform is equipped with the head fixing mechanism, the middle fixing mechanism, and the tail fixing mechanism. The head fixing mechanism is adapted to the head of the casting blade, the middle fixing mechanism is adapted to the middle part of the casting blade, and the tail fixing mechanism is adapted to the tail of the casting blade. A machining hole is provided on the platform, located at the middle fixing mechanism, and its position corresponds to the machined bottom surface of the middle part of the casting blade. The head fixing mechanism includes a head support and a head clamping component. The head support and the head clamping component... The gap between the two parts matches the size of the front end of the casting blade head; the tail fixing mechanism includes a tail support and a tail positioning part. The tail support is located below the tail end of the casting blade, and the tail positioning part is located on one side of the tail end of the casting blade; the middle fixing mechanism includes a middle support, a middle clamping part, and a middle positioning part. The middle support is located around the machining hole, and a corresponding middle clamping part is provided above the middle support on one side of the machining hole. The gap between the middle clamping part and the corresponding middle support is matched with the size of the left side of the middle part of the casting blade, and the middle positioning part is located on the side of the middle part of the casting blade.
2. The casting vane EDM fixture of claim 1, wherein: The head support includes a first head support block and a second head support block. The first head support block and the second head support block are inclined at the same angle on the table. The inclination angle of the first head support block and the second head support block is the same as the inclination angle of the front end of the casting blade.
3. The electro-discharge machining fixture for a cast blade according to claim 2, characterized in that: The head clamping component includes a head clamping bracket and a head clamping block. The head clamping block is provided on the head clamping bracket and is located above the first head support block and the second head support block. The bottom surface of the head clamping block is an inclined surface with the same inclination angle as the inclination angle of the front end of the casting blade. The gap between the head clamping block and the first head support block and the second head support block forms a fixed position for the front end of the casting blade.
4. The EDM fixing device for casting blades according to claim 1, characterized in that: The tail support component includes a tail support block and a tail support point. The tail support block is set on the platform, and the tail support point is set on the tail support block. The tail support point contacts the lower part of the tail end of the casting blade.
5. The EDM fixing device for casting blades according to claim 4, characterized in that: The tail positioning component includes a tail positioning block and a tail positioning point. The tail positioning block is set on the table, and the tail positioning point is set on the tail positioning block. The tail positioning point contacts one side of the tail end of the casting blade, and the extension line of the tail positioning point intersects perpendicularly with the extension line of the tail support point.
6. The EDM fixing device for casting blades according to claim 1, characterized in that: The central support component includes a first central support block, a second central support block, a first central support column, a second central support column, a first central support point, and a second central support point. The first central support block and the second central support block are respectively installed on the outer sides of two corners on one side of the machining hole, and the first central support column and the second central support column are respectively installed on the outer sides of two corners on the other side of the machining hole. The first central support block and the second central support block are respectively equipped with a first central support point and a second central support point. The first central support block and the second central support block have different heights, and the line connecting the first central support point and the second central support point has an inclination angle of α. The first central support column and the second central support column have different heights, and the first central support column and the second central support column are inclined at an angle of β. α and β are the same as the inclination angle of the middle part of the casting blade.
7. The EDM fixing device for casting blades according to claim 1, characterized in that: The central clamping component includes a first central clamping frame, a second central clamping frame, a first central clamping block, and a second central clamping block. The first and second central clamping frames are located on one side of the machining hole. The first and second central clamping frames are respectively equipped with the first and second central clamping blocks. The bottom surfaces of the first and second central clamping blocks are inclined surfaces with the same inclination angle as the central inclination angle of the casting blade. The first and second central clamping frames have different heights. The first central clamping frame is correspondingly set with the first central support column, and the second central clamping frame is correspondingly set with the second central support column. The gaps between the first and second central clamping blocks and their corresponding first and second central support columns match the dimensions of the left side of the central part of the casting blade.
8. The EDM fixing device for casting blades according to claim 1, characterized in that: The central positioning component includes a front side positioning block, a front side positioning point, a left side positioning block, and a left side positioning point. The front side positioning block is movably mounted on the table, and a front side positioning point is provided on the front side positioning block. The front side positioning point is positioned facing the front side of the middle part of the casting blade. The left side positioning block is mounted on the table, and a left side positioning point is provided on the left side positioning block. The left side positioning point is positioned facing the left side of the middle part of the casting blade.