A high-precision numerical control milling method for a thin-walled superalloy cartridge support plate

By using a layered milling method and real-time chatter assessment, and by optimizing milling parameters based on the rigidity distribution and material properties of the support plate, the problems of machining deformation and chatter in the thin-walled high-temperature alloy casing support plate were solved, achieving high-precision and stable machining results.

CN122400628APending Publication Date: 2026-07-17CHANGZHOU KAIDU ELECTROMECHANICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU KAIDU ELECTROMECHANICAL CO LTD
Filing Date
2026-05-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Controlling the deformation of thin-walled high-temperature alloy casing plates during machining is difficult, especially due to poor chatter stability, which leads to substandard machining quality and high scrap rate. Existing technologies lack differentiated process design and real-time chatter assessment, making it difficult to achieve high-precision machining.

Method used

By collecting material and structural property data and combining the rigidity distribution of the support plate, basic milling process parameters are formulated. Layered milling method is used to distribute cutting load and plan tool path. Cutting vibration response is evaluated in real time, milling parameters are adjusted to suppress chatter and deformation, and frequency domain analysis and parameter sensitivity analysis are used to optimize the milling process.

Benefits of technology

It effectively suppressed the deformation and chatter of the thin-walled support plate, improved the uniformity of wall thickness and the accuracy of contour shape and position, reduced the scrap rate, and ensured the stability and high precision of the processing.

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Abstract

The application belongs to the technical field of milling processing, and particularly relates to a high-precision numerical control milling processing method for a high-temperature alloy thin-wall machine case support plate, which comprises the following steps: collecting material characteristics and machine case support plate structure characteristic data, combining support plate rigidity distribution and machining allowance distribution, formulating basic milling process parameters; adopting a layered rigidity milling method, calculating milling deformation regulation and control parameters according to cutting load distribution and tool path planning, adjusting the basic process parameters to obtain layered milling control parameters; collecting cutting vibration response data of the support plate in the milling process, obtaining a flutter stability margin through a frequency domain flutter evaluation method, and judging whether the flutter stability margin meets the standard or not; if the flutter stability margin does not meet the standard, the control parameters are optimized; extracting cutting force fluctuation characteristics from the vibration response data, obtaining regulation and control influence indexes through parameter sensitivity analysis, adjusting the milling deformation regulation and control parameters, and obtaining milling correction parameters; and the application can significantly improve the processing precision, effectively prevent and control milling flutter, improve the processing efficiency, and enhance the process stability.
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