Tool and method for manufacturing connecting hole in mounting window of ceramic matrix composite product

By using hole making tooling with positioning components and inlaid structures in ceramic matrix composite products, the problem of low position accuracy and verticality of the connection holes in the prior art is solved, and higher hole making accuracy and yield are achieved.

CN119704413AActive Publication Date: 2025-03-28XIAN XINGUI CERAMIC COMPOSITE MATERIAL CO LTD
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Patent Information

Application Number
CN202411843078.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-03-28
Estimated Expiration
2044-12-13

AI Technical Summary

Technical Problem

The existing hole making method When preparing connecting holes in ceramic matrix composite products, the position accuracy is poor, the perpendicularity of the hole position to the surface of the parts is not high, and the hole position is easily damaged, making it difficult to meet the process requirements of ceramic matrix composite products.

Method used

Provided is a hole-making tool for connecting holes in the installation window of ceramic matrix composite material product, including a base, a positioning component, a hole-making insert and a hole-rejumping insert. The positioning assembly ensures the position accuracy of the product to be processed through a plurality of first positioning blocks, second positioning blocks and third positioning blocks; the hole-making insert and the hole-rejumping insert are matched with the positioning block through the positioning hole to avoid damage to the hole position by direct drilling of the drill bit.

Benefits of technology

The position accuracy of the connecting hole and the perpendicularity of the hole position with the surface of the parts is improved, the occurrence of hole position damage is reduced, the process requirements of ceramic matrix composite materials are met, and the hole making accuracy and yield are improved.

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Abstract

The invention discloses a hole forming tool and method for a connecting hole in a mounting window of a ceramic matrix composite product. The technical problems that the position precision of the connecting hole formed through an existing hole forming method is poor, the perpendicularity of a hole site and the surface of a part is not high, and the hole site is prone to being damaged are solved. The drilling tool comprises a base, a positioning assembly, a drilling bushing and at least one chambering bushing, the positioning assembly comprises a plurality of first positioning blocks, at least one second positioning block and at least one third positioning block; the first positioning block is used for abutting against the side wall of a to-be-machined product. The second positioning blocks and the third positioning blocks form a group in pairs and are used for abutting against the interiors of two adjacent mounting windows of a to-be-machined product, and a plurality of positioning holes are formed in the abutting faces respectively; the hole-making insert bush is used for being installed in the positioning hole of the second positioning block or the third positioning block when the bottom hole is machined. The chambering bushing is used for being installed in the positioning hole of the second positioning block or the third positioning block and chambering the bottom hole. The hole forming tool is high in hole forming precision.
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