Special linear cutting tool for aero-engine blade casting
By designing reference surfaces A and B to determine the starting and ending points of the cutting, and by utilizing the cooperation between the inclined clamping handle and the pressure block, the problem of clamping irregular surfaces of engine blades was solved, achieving stable cutting and efficient positioning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JICUI YITUO TECHNOLOGY (SUZHOU) CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
Existing engine blades, being composed of arc or inclined surfaces, cannot be stably clamped and their X0Y0 positions cannot be determined, making wire cutting difficult.
A special tooling for wire cutting of aero-engine blade castings was designed. The starting and ending points of the cutting are determined by reference planes A and B. The inclined clamping handle cooperates with the clamping block to achieve stable clamping and fixing of irregular surfaces.
It enables stable clamping and positioning of irregular blade castings, ensuring positional accuracy and stability during the cutting process and improving cutting efficiency.
Smart Images
Figure CN224273605U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting cutting technology, specifically a wire cutting tooling for aero-engine blade castings. Background Technology
[0002] For parts that require wire EDM, the upper plane of the part is needed for stable clamping, and two mutually perpendicular planes on the part that are also perpendicular to the horizontal plane are used to determine the X0Y0 position of the part.
[0003] However, existing engine blades are composed of arc surfaces or inclined surfaces, which cannot be stably clamped during installation. Furthermore, arc surfaces and inclined surfaces cannot be used to directly determine the X0Y0 position of the part, making wire cutting impossible. Utility Model Content
[0004] The purpose of this utility model is to provide a special tooling for wire cutting of aero-engine blade castings. The first positioning bracket is located on the reference surface A of the tooling base plate, and the third positioning bracket is located on the reference surface B of the tooling base plate. Through the reference surfaces A and B, the cutting line is moved to the cutting starting point according to the theoretical value. Then, the casting body is installed on the tooling and pressed tightly. The cutting program is started, and cutting is performed from A to B according to the cutting line trajectory. The cutting process is completed when the cutting end point B is reached. This can solve the problems in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a special tooling for wire cutting of aero-engine blade castings, comprising a tooling base plate and a casting body, wherein an integrally formed support shaft is provided above the tooling base plate, a clamping handle is provided above the support shaft, a first positioning bracket is provided on one side of the support shaft, and a first positioning bracket is provided on the other side of the support shaft, wherein a third positioning bracket is provided between the first positioning bracket and the second positioning bracket, and the third positioning bracket is aligned with the support shaft, and positioning pins are provided on the outer surfaces of the first positioning bracket, the second positioning bracket and the third positioning bracket.
[0006] With the above scheme, three sets of positioning brackets and one set of clamping structure are installed above the tooling base plate. The four sets of structures correspond to the four sides of the tooling base plate. Positioning pin structures are set on the surface of the three sets of positioning brackets. The casting body contacts the positioning pins during placement, thereby ensuring the stable placement of the casting body. Finally, the casting body is clamped and fixed by the clamping handle to prevent the blade from moving during wire cutting.
[0007] Furthermore, the surface of the first positioning bracket has two positioning pins, the surface of the second positioning bracket has three positioning pins, one of which is located on one side of the second positioning bracket, and the inclined surface of the third positioning bracket has one positioning pin.
[0008] Furthermore, a metal hinge is provided below the clamping handle, and the metal hinges are connected to each other by bolts, wherein the clamping handle is rotatably connected to the metal hinge.
[0009] Furthermore, a pressure block is provided at the front end of the clamping handle, and a locking clamp is provided above the pressure block. The pressure block is connected to the clamping handle through the locking clamp.
[0010] The above scheme utilizes a tilted clamping handle in conjunction with a front-end clamping block to press the surface of the blade casting. The tilted clamping block can also better fit the irregular surface of the blade casting, improving the stability of the clamping.
[0011] Furthermore, the locking clamp is slidably connected to the front end of the clamping handle, and the front end of the clamping handle is configured as a ring structure.
[0012] The above method allows for adjustment of the distance between the pressure blocks by adjusting the tightness of the locking clamps, thus enabling adaptive adjustments based on the placement angle of the blade casting during use.
[0013] Furthermore, the two ends of the casting body are respectively located above the first positioning bracket and the second positioning bracket, and one side of the casting body is in contact with the inclined surface of the third positioning bracket.
[0014] With the above scheme, the side where the first positioning bracket is located is set as the reference surface A of the tooling base plate, and the side where the third positioning bracket is located is set as the reference surface B of the tooling base plate 1 on one side.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. In this utility model, the first positioning bracket is located on the reference surface A of the tooling base plate, and the third positioning bracket is located on the reference surface B of the tooling base plate. Through reference surfaces A and B, the cutting line is moved to the cutting starting point according to the theoretical value. Then, the casting body is installed on the tooling and pressed tightly. The cutting program is started, and the cutting is performed from A to B according to the cutting line trajectory. The cutting process is completed when the cutting end point B is reached.
[0017] 2. In this utility model, the clamping handle adopts an inclined design structure. Because the blade casting is an irregular structure, it cannot be kept horizontal during placement. At this time, the inclined clamping handle, together with the front clamping block, is used to clamp the surface of the blade casting. The inclined clamping block can also better fit with the irregular surface of the blade casting, improving the stability of clamping. Attached Figure Description
[0018] Figure 1 This is the overall front view of the present invention;
[0019] Figure 2This is an overall side view of the present invention;
[0020] Figure 3 This is a schematic diagram of the main structure of the casting of this utility model;
[0021] Figure 4 This is a schematic diagram of the main casting installation structure of this utility model.
[0022] In the figure: 1. Tooling base plate; 2. First positioning bracket; 3. Second positioning bracket; 4. Third positioning bracket; 5. Clamping handle; 6. Support shaft; 7. Casting body; 8. Positioning pin; 501. Metal hinge; 502. Pressure block; 503. Locking clamp. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] To address the issue that existing engine blades, composed of curved or inclined surfaces, cannot be stably clamped during mounting, and that these surfaces cannot be used to directly determine the X0Y0 position of the part, thus preventing wire EDM; please refer to... Figure 1-4 The present invention provides the following solution:
[0025] Reference Figure 1-3 A wire cutting fixture for aero-engine blade casting includes a fixture base plate 1 and a casting body 7. An integrally formed support shaft 6 is provided above the fixture base plate 1. A clamping handle 5 is provided above the support shaft 6. A first positioning bracket 2 is provided on one side of the support shaft 6 and another first positioning bracket 2 is provided on the other side of the support shaft 6. A third positioning bracket 4 is aligned with the support shaft 6 and is provided between the first positioning bracket 2 and the second positioning bracket 3. Positioning pins 8 are provided on the outer surfaces of the first positioning bracket 2, the second positioning bracket 3 and the third positioning bracket 4. The surface of the first positioning bracket 2 has two positioning pins 8, the surface of the second positioning bracket 3 has three positioning pins 8, one of which is located on one side of the second positioning bracket 3, and the inclined surface of the third positioning bracket 4 has one positioning pin 8.
[0026] In this embodiment, the tooling base plate 1 is a rectangular structure, mainly used for mounting on the machine platform and determining the reference surface. Three sets of positioning brackets and one set of clamping structure are installed on the top of the tooling base plate 1. The four sets of structures correspond to the four sides of the tooling base plate 1. Positioning pins 8 are provided on the surface of the three sets of positioning brackets. The casting body 7 contacts the positioning pins 8 during placement, thereby ensuring the stable placement of the casting body 7. Finally, the casting body 7 is clamped and fixed by the clamping handle 5 to prevent the blade from moving during wire cutting.
[0027] It should be noted that the third positioning bracket 4 forms a concave groove structure with the first positioning bracket 2 and the second positioning bracket 3 on the opposite side, which is used to place and fix the main body 7 of the casting.
[0028] Reference Figure 1-2 A metal hinge 501 is provided below the clamping handle 5. The metal hinge 501 is connected to the metal hinge 501 by bolts. The clamping handle 5 is rotatably connected to the metal hinge 501. A pressure block 502 is provided at the front end of the clamping handle 5. A locking clamp 503 is provided above the pressure block 502. The pressure block 502 is connected to the clamping handle 5 through the locking clamp 503. The locking clamp 503 is slidably connected to the front end of the clamping handle 5. The front end of the clamping handle 5 is set as a ring structure.
[0029] In this embodiment, the clamping handle 5 adopts an inclined design structure. Because the blade casting is an irregular structure, it cannot be kept horizontal during placement. At this time, the inclined clamping handle 5, together with the front clamping block 502, is used to clamp the surface of the blade casting. The inclined clamping block 502 can also better fit with the irregular surface of the blade casting, improving the stability of clamping.
[0030] It should be noted that the distance of the pressure block 502 can be adjusted by adjusting the tightness of the locking clamp 503, so that it can be adapted to the placement angle of the blade casting during use.
[0031] Reference Figure 4 The two ends of the casting body 7 are respectively located above the first positioning bracket 2 and the second positioning bracket 3, and one side of the casting body 7 is in contact with the inclined surface of the third positioning bracket 4.
[0032] In this embodiment, the mounting surface of the fixture base plate 1 is placed on the wire cutting machine table and fixed. The first positioning bracket 2 is located on the reference surface A of the fixture base plate 1, and the third positioning bracket 4 is located on the reference surface B of the fixture base plate 1. The cutting line is moved to the cutting starting point according to the theoretical value through the reference surfaces A and B. Then, the casting body 7 is installed on the fixture and pressed tightly. The cutting program is started, and the cutting is performed from A to B according to the cutting line trajectory. The cutting process is completed when the cutting end point B is reached.
[0033] The working principle is as follows: the mounting surface of the fixture base plate 1 is placed on the wire cutting machine table and fixed. Then, the casting body 7 is installed on the fixture. During the placement process, the casting body 7 contacts the positioning pin 8, thereby ensuring the stable placement of the casting body 7. Finally, the casting body 7 is pressed and fixed by the clamping handle 5 to prevent the blade from moving during the wire cutting process. Finally, the cutting program is started, and the cutting is carried out from A to B according to the cutting line trajectory. The cutting process is completed when the cutting end point B is reached.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A wire cutting jig for an aeroengine blade casting, characterized by, The fixture includes a base plate (1) and a casting body (7). An integrally formed support shaft (6) is provided above the base plate (1). A clamping handle (5) is provided above the support shaft (6). A first positioning bracket (2) is provided on one side of the support shaft (6) and another first positioning bracket (2) is provided on the other side of the support shaft (6). A third positioning bracket (4) is aligned with the support shaft (6) between the first positioning bracket (2) and the second positioning bracket (3). Positioning pins (8) are provided on the outer surfaces of the first positioning bracket (2), the second positioning bracket (3) and the third positioning bracket (4).
2. The wire cutting special tooling for aero-engine blade casting according to claim 1, characterized in that: The first positioning bracket (2) has two positioning pins (8) on its surface, the second positioning bracket (3) has three positioning pins (8) on its surface, one of which is located on one side of the second positioning bracket (3), and the third positioning bracket (4) has one positioning pin (8) on its inclined surface.
3. The wire cutting special tooling for aero-engine blade casting according to claim 1, characterized in that: A metal hinge (501) is provided below the clamping handle (5). The metal hinge (501) is connected to the metal hinge (501) by bolts. The clamping handle (5) is rotatably connected to the metal hinge (501).
4. The wire cutting special tooling for aero-engine blade casting according to claim 1, characterized in that: The front end of the clamping handle (5) is provided with a pressure block (502), and a locking clamp (503) is provided above the pressure block (502). The pressure block (502) is connected to the clamping handle (5) through the locking clamp (503).
5. The wire cutting special tooling for aero-engine blade casting according to claim 4, characterized in that: The locking clamp (503) is slidably connected to the front end of the clamping handle (5), and the front end of the clamping handle (5) is set as a ring structure.
6. The wire cutting fixture for aero-engine blade castings according to claim 1, characterized in that: The two ends of the casting body (7) are located above the first positioning bracket (2) and the second positioning bracket (3) respectively, and one side of the casting body (7) is in contact with the inclined surface of the third positioning bracket (4).