Hole milling tool special for sealing piece

Abstract

The utility model relates to a special hole milling tool for a sealing fin, which comprises a base and is technically characterized in that a lower stop block is embedded on the upper surface of the base, a lower positioning groove corresponding to the wide bottom surface of the sealing fin is arranged on the upper surfaces of the base and the lower stop block, a positioning block is arranged above the base, and the positioning block is arranged in the lower positioning groove. An upper check block corresponding to the lower check block is embedded in the front portion of the lower surface of the positioning block, an upper positioning groove corresponding to the narrow top face of the sealing piece is formed in the lower surface of the upper check block, and vertical receding notches corresponding to the arc-shaped openings in the narrow top face of the sealing piece in a one-to-one mode are formed in the front side wall of the positioning block and the front side wall of the upper check block. The tool is further provided with a positioning strip used for being inserted into the inner bend of the inflection point of the sealing piece. According to the tool, the problem that the sealing piece which is special in shape and thin in wall is prone to deformation during hole milling is solved, and the machining precision is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine component manufacturing technology, specifically to a special milling tool for sealing sheets. Background Technology

[0002] Sealing plates are crucial components of aero engines, and their quality is closely related to the high-performance requirements of aircraft. Sealing plates must possess excellent performance and dimensional accuracy to ensure the normal operation of critical components such as aero engines, cabins, and fuel systems. Furthermore, with the development of aerospace technology, higher requirements are placed on the materials, processes, and structures of sealing plates to meet stringent performance standards. Therefore, ensuring both efficient production and dimensional accuracy is essential.

[0003] However, see sealing sheet. Figures 4-5 When the shape is special and the wall is thin, it is not easy to clamp, and it is easy to deform during milling, which is not conducive to ensuring machining accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a special milling fixture for sealing sheets that has a reasonable structure and reliable use, so as to solve the problem that sealing sheets with special shapes and thin walls are prone to deformation during milling, and significantly improve the machining accuracy.

[0005] The technical solution of this utility model is:

[0006] A special milling fixture for sealing sheets includes a base. The key technical features are: a lower stop block is embedded on the upper surface of the base; the upper surfaces of the base and the lower stop block have lower positioning grooves corresponding to the wide bottom surface of the sealing sheet; a positioning block is provided above the base; an upper stop block corresponding to the lower stop block is embedded in the front part of the lower surface of the positioning block; the lower surface of the upper stop block has an upper positioning groove corresponding to the narrow top surface of the sealing sheet; the front sidewalls of the positioning block and the upper stop block have vertical clearance notches corresponding to each arc-shaped opening on the narrow top surface of the sealing sheet; and the fixture further includes a positioning strip for insertion into the inner bend of the sealing sheet's inflection point.

[0007] The aforementioned milling fixture for sealing sheets has multiple locking screws between the base and the positioning block, and multiple longitudinal springs are also embedded on the upper surface of the base to eliminate gaps.

[0008] The beneficial effects of this utility model are:

[0009] When in use, the sealing sheet is first supported by the positioning strip, and then the outer side of the sealing sheet is clamped by the upper and lower blocks. This avoids deformation during clamping, thereby achieving high efficiency and stability in the processing of the sealing sheet, ensuring dimensional accuracy, guaranteeing milling precision, improving product qualification rate, increasing production efficiency, saving processing costs, and making it highly operable and practical. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 yes Figure 1 The left view;

[0012] Figure 3 yes Figure 1 Top view;

[0013] Figure 4 This is a schematic diagram of the sealing sheet structure;

[0014] Figure 5 yes Figure 4 Sectional view along the AA direction. Detailed Implementation

[0015] The present invention will be described in detail with reference to the accompanying drawings.

[0016] like Figures 1-5 As shown, this special milling fixture for sealing sheets includes a base 1. A lower stop block 6 is embedded in the upper surface of the base 1. The upper surfaces of the base 1 and the lower stop block 6 are provided with lower positioning grooves corresponding to the wide bottom surface 401 of the sealing sheet 4. A positioning block 2 is provided above the base 1. An upper stop block 7 corresponding to the lower stop block 6 is embedded in the front part of the lower surface of the positioning block 2. The lower surface of the upper stop block 7 is provided with an upper positioning groove corresponding to the narrow top surface 402 of the sealing sheet 4. The front sidewalls of the positioning block 2 and the upper stop block 7 are provided with vertical clearance notches 3 that correspond one-to-one with each arc-shaped opening 403 on the narrow top surface of the sealing sheet 4. The fixture also has a positioning strip (omitted in the figure) for inserting into the inflection point of the sealing sheet 4.

[0017] In this embodiment, a plurality of locking screws 8 are provided between the base 1 and the positioning block 2, and a plurality of longitudinal springs 5 ​​are also embedded on the upper surface of the base 1 to eliminate gaps.

[0018] Working principle:

[0019] Place the sealing sheet 4 (to be milled) onto the positioning strip, then place the sealing sheet 4 above the lower positioning groove of the base 1 and the lower stop block 6. Next, press the positioning block 2 onto the sealing sheet 4, that is, the upper positioning groove of the upper stop block 7 is fastened onto the sealing sheet 4. The positioning block 2 and the base 1 are connected and fixed with locking screws 8 to achieve internal and external clamping and positioning of the sealing sheet 4. After positioning is completed, the milling operation can be performed.

[0020] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A special milling tool for sealing sheet, comprising a base, characterized in that: The upper surface of the base is fitted with a lower stop block. The upper surfaces of the base and the lower stop block are provided with a lower positioning groove corresponding to the wide bottom surface of the sealing sheet. A positioning block is provided above the base. The lower surface of the positioning block is fitted with an upper stop block corresponding to the lower stop block. The lower surface of the upper stop block is provided with an upper positioning groove corresponding to the narrow top surface of the sealing sheet. The front sidewalls of the positioning block and the upper stop block are provided with vertical clearance notches corresponding to each arc-shaped opening on the narrow top surface of the sealing sheet. The tooling is further provided with a positioning strip for inserting into the inner bend of the sealing sheet.

2. The sealing sheet dedicated hole-milling tool according to claim 1, characterized by: Multiple locking screws are provided between the base and the positioning block, and multiple longitudinal springs are also embedded on the upper surface of the base.

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