Special tool for wire cutting of aviation flame transfer groove

Abstract

The utility model discloses a special tool for aviation flame transfer groove wire cutting, which comprises a lower insert, an upper insert and a pressing block, the middle position of the lower insert is provided with a limit groove matched with the outer side molded surface of a flame transfer groove, the lower part of the upper insert is provided with a limit bulge matched with the inner side molded surface of the flame transfer groove, and the limit bulge is provided with a limit groove matched with the inner side molded surface of the flame transfer groove. According to the technical field, the upper insert and the lower insert are fixed through the pressing block and the locking connecting piece, then limiting and locking of flame transfer groove product parts are achieved, then linear cutting is conducted through a machine tool, and therefore the flame transfer groove product parts can be fixed through the pressing block and the locking connecting piece. A machine tool does not need to touch a product to find a datum plane, manual intervention is little, machining efficiency is high, the product size can be effectively guaranteed, and the product percent of pass is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation engine parts manufacturing, in particular to the application in the field of multi-angle wire cutting special tooling, specifically a special tooling for aviation flame transfer groove wire cutting. Background Art

[0002] The flame transfer groove is a technical device used in the afterburner of an aircraft engine. Its main function is to promote the propagation of flame and stabilize the combustion process. The flame transfer groove has a V-shaped cross-section and is arranged circumferentially on the inner wall of the afterburner. They are connected to the trailing edges of the outer annular flame stabilizer and the inner annular flame stabilizer to form a specific structure to promote the propagation and stability of flame. In the prior art, the traditional operation method of wire cutting of flame transfer groove parts is: first fix the product, use the machine tool to find the product reference surface for counting, and then cut; the main disadvantage of this operation method is that the product needs to be fixed on the machine tool each time it is processed, and then the machine tool touches the product to find the reference surface, and manual assistance is required each time, the processing efficiency is low, and it is not easy to ensure the product size, and the product qualification rate is low. In view of this, in-depth research was conducted on the above-mentioned problems, and this case was generated. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a special tool for aviation flame transfer groove wire cutting, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a special tool for aviation flame transfer groove wire cutting, including a lower insert, an upper insert and a pressure block, the middle position of the lower insert is provided with a limiting groove matching the outer surface of the flame transfer groove, the lower part of the upper insert is provided with a limiting protrusion matching the inner surface of the flame transfer groove, the pressure block is buckled on the top of the upper insert and assembled and fixed to the lower insert through a locking connector.

[0005] The locking connector includes a screw, a sleeve and a locking nut. The lower end of the screw is assembled and fixed with the lower insert. The sleeve is sleeved on the screw. The pressure block is symmetrically provided with guide holes matching the sleeve. The locking nut is screwed onto the screw and fits tightly with the pressure block.

[0006] A mounting groove is provided on the top of the upper insert, the size of the mounting groove matches the size of the pressing block, and a guide column is provided at the center of the mounting groove.

[0007] A limiting hole is provided on the pressing block at a position corresponding to the guide post, and the limiting hole is slidably matched with the guide post.

[0008] The utility model provides a special tool for wire cutting of aviation flame transfer grooves. It has the following beneficial effects: the special tool for wire cutting of aviation flame transfer grooves places the flame transfer groove product parts in the limiting groove in the middle of the lower insert, and at the same time, the upper insert is fixedly inserted into the flame transfer groove product, and then the upper insert and the lower insert are fixed by the pressing block and the locking connector, and then the limiting locking of the flame transfer groove product parts is realized, and then the wire cutting is performed by the machine tool, without touching the product by the machine tool to find the reference surface, less manual intervention, high processing efficiency, and can effectively ensure the product size and improve the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a three-dimensional structural schematic diagram of a special tooling for aviation flame transfer groove wire cutting.

[0010] Figure 2 It is a schematic diagram of the axonometric structure of the lower insert of the utility model.

[0011] Figure 3 It is a schematic diagram of the axonometric structure of the upper insert of the utility model.

[0012] Figure 4 This is a schematic diagram of the axonometric structure of the pressing block of the utility model.

[0013] Figure 5 This is a schematic diagram of the flame transfer trough product parts.

[0014] In the figure: 1. lower insert; 2. upper insert; 3. pressure block; 4. flame transfer groove; 5. screw; 6. sleeve; 7. locking nut; 8. assembly groove; 9. guide column; 10. limit hole; 11. guide hole. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Embodiment: In conjunction with the specification Figure 1-5It can be seen that the present application specifically designs a special tooling for wire cutting of aviation flame transfer groove 4, including a lower insert 1, an upper insert 2 and a pressure block 3. A limiting groove matching the outer profile of the flame transfer groove 4 is opened in the middle position of the lower insert 1, and a limiting protrusion matching the inner profile of the flame transfer groove 4 is provided at the lower part of the upper insert 2. The pressure block 3 is buckled on the top of the upper insert 2 and assembled and fixed with the lower insert 1 by a locking connector. The flame transfer groove 4 product parts are placed in the limiting groove in the middle of the lower insert 1, and the upper insert 2 is fixedly inserted into the flame transfer groove 4 product. Then, the upper insert 2 and the lower insert 1 are fixed by the pressure block 3 and the locking connector, and then the flame transfer groove 4 product parts are limited and locked. Then, wire cutting is performed by the machine tool without touching the product through the machine tool to find the reference surface. There is less manual intervention, high processing efficiency, and the product size can be effectively guaranteed to improve the product qualification rate.

[0017] In the specific implementation process, as a preferred setting, the above-mentioned locking connection includes a screw 5, a sleeve 6 and a locking nut 7. The lower end of the screw 5 is assembled and fixed with the lower insert 1, the sleeve 6 is sleeved on the screw 5, and the pressure block 3 is symmetrically provided with guide holes 11 matching the sleeve 6. The locking nut 7 is screwed onto the screw 5 and fits tightly with the pressure block 3. After the upper insert 2 is installed in place, the guide holes 11 at both ends of the pressure block 3 are aligned with the position of the sleeve 6 and inserted, and the pressure block 3 is locked by the locking nut 7, so that the upper insert 2 and the lower insert 1 are maintained in the current position, and the flame transfer groove 4 is clamped and fixed.

[0018] In the specific implementation process, as a preferred setting, an assembly groove 8 is provided on the top of the upper insert 2, the size of the assembly groove 8 matches the size of the pressure block 3, and a guide column 9 is provided at the center position of the assembly groove 8, wherein a limiting hole 10 is provided on the pressure block 3 corresponding to the position of the guide column 9, and the limiting hole 10 is slidably matched with the guide column 9. When in use, the assembly groove 8 on the top of the upper insert 2 and the outer edge of the pressure block 3 are stuck to each other, and at the same time, the cooperation of the guide column 9 and the limiting hole 10 can effectively prevent the upper insert 2 from moving, thereby improving the processing accuracy.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special tool for aviation flame groove wire cutting, characterized in that: It includes a lower insert, an upper insert and a pressure block. The middle position of the lower insert is provided with a limiting groove matching the outer surface of the flame transmission groove. The lower part of the upper insert is provided with a limiting protrusion matching the inner surface of the flame transmission groove. The pressure block is buckled on the top of the upper insert and assembled and fixed with the lower insert through a locking connector.

2. The special tooling for aviation flame transfer groove wire cutting according to claim 1 is characterized in that: The locking connector includes a screw, a sleeve and a locking nut. The lower end of the screw is assembled and fixed with the lower insert. The sleeve is sleeved on the screw. The pressure block is symmetrically provided with guide holes matching the sleeve. The locking nut is screwed on the screw and tightly attached to the pressure block.

3. The special tooling for aviation flame transfer groove wire cutting according to claim 1 is characterized in that: A mounting groove is provided on the top of the upper insert, the size of the mounting groove matches the size of the pressing block, and a guide column is provided at the center of the mounting groove.

4. The special tooling for aviation flame transfer groove wire cutting according to claim 3 is characterized in that: A limiting hole is provided on the pressing block at a position corresponding to the guide post, and the limiting hole is slidably matched with the guide post.

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