A numerical control programming method and device for rough machining and semi-finishing blade runner surface

By using a universal insert-type round nose cutter for programming, generating a standard ISO format program and converting it into a toolpath source file, the problem of low machining efficiency of blade flow channel surfaces is solved, achieving high-efficiency and low-cost machining of blade flow channel surfaces.

CN117032086BActive Publication Date: 2026-06-19AECC AERO SCI & TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AECC AERO SCI & TECH CO LTD
Filing Date
2023-08-16
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In the existing technology, ball end mills have the problem of low processing efficiency when machining blades. In particular, the existing processing methods cannot effectively solve the problem of efficient machining of the blade flow channel surface.

Method used

Using a universal insert-type round nose cutter for programming and machining, a standard ISO format program is generated, which is then converted into a toolpath source file (cls file). The 3D model is then imported into the machining software to generate a CNC machining program, enabling roughing/semi-finishing with universal tools.

Benefits of technology

It significantly improves the machining efficiency of blade flow channel surfaces, reduces machining costs, and enables rapid machining of rotor and stator blade flow channel surfaces.

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Abstract

This invention relates to the field of gas turbine blade machining technology, and discloses a CNC programming method and apparatus for roughing and semi-finishing blade flow passage surfaces. The method involves creating a preliminary ISO format program using machining programming software to perform roughing or semi-finishing of the blade flow passage surface using machining tools. Then, reverse calculation is performed to obtain a CLS toolpath source file usable by the machining software. This toolpath source file is then imported into the machining software, and after conversion, a machining program usable for blade flow passage surface machining equipment is output, enabling the use of general-purpose machining tools for roughing / semi-finishing blade flow passage surfaces. In particular, the use of general-purpose insert-type round nose cutters in programming machining replaces the original ball end mill machining strategy, significantly improving tool feed rate and machining efficiency. Furthermore, this tool has low cost, reducing machining costs and enabling rapid machining of rotor and stator blade flow passage surfaces.
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