A Contour Quality Control Method for Aeroengine Blade Machining Degradation

A quality control method and aero-engine technology, which are applied in the field of contour quality control in the machining process of engine blades, and in the field of contour quality control in which the machining process of aero-engine blades is degraded, and can solve the problems of low contour quality control accuracy and the like.

Active Publication Date: 2020-01-31
XIDIAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects in the above-mentioned prior art, and propose a method for controlling the contour quality of the degradation of the machining process of the aero-engine blade, which is used to solve the problem of low precision of the contour quality control in the machining process of the aero-engine blade

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  • A Contour Quality Control Method for Aeroengine Blade Machining Degradation
  • A Contour Quality Control Method for Aeroengine Blade Machining Degradation
  • A Contour Quality Control Method for Aeroengine Blade Machining Degradation

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Embodiment Construction

[0060] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0061] Reference figure 1 , The implementation steps of the present invention are as follows:

[0062] Step 1) Establish a coupling prediction model for the accumulation of profile errors in the multi-stage machining process of aero-engine blades:

[0063] Step 1a) Analyze the multi-source error that affects the degradation of the aero-engine blade processing process:

[0064] Through the state space and error flow transfer principle, refer to figure 2 , To determine the error source of the aero-engine blade machining process is divided into benchmark error; machining error caused by tool path; fixture geometric error; workpiece deformation error caused by cutting force; noise error; error transmission analysis and machining process degradation mechanism analysis of engine blade, Obtain the coefficient expression of the engine blade machining process de...

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Abstract

The invention provides a quality control method for a degraded profile in a processing course of a blade of an aviation engine, and is used for solving the problem that profile quality control precision is low in an existing processing course of the blade of the aviation engine. The method comprises the following implementation steps: establishing a coupling prediction model for degraded profile error accumulation in the multi-stage processing course of the blade of the aviation engine; carrying out least square regression on the coupling prediction model for degraded profile error accumulation in the multi-stage processing course of the blade of the aviation engine; carrying out self-closing treatment on profile errors in the processing course of the blade of the engine by using a methodfor predicting residual errors ahead of time; carrying out least square regression on a residual equation of a node process k in the processing course of the blade of the engine; establishing a T2 control chart monitoring model based on clusters; and acquiring a degraded profile quality control result in the processing course of the blade of the aviation engine. The profile quality control precision of the processing course of the blade of the engine can be improved, and the method can be applied to profile quality control in the processing course of the blade of the engine in the field of aviation industry.

Description

Technical field [0001] The invention belongs to the technical field of advanced manufacturing and automation, and specifically relates to a contour quality control method for degraded aeroengine blade processing process, and can be used for contour quality control of the engine blade processing process in the field of aviation industry. Background technique [0002] Aero-engine blades are difficult to machine, complex in profile, difficult to guarantee contour accuracy, and difficult to control errors. Such parts usually use nickel-based superalloys, titanium alloys and other materials that are difficult to process. In the multi-source and multi-process machining process, there are many and complex error sources, the workpiece is volatile, and the structure is easy to chatter. [0003] In the existing processing quality control methods, by establishing models, designing control limits, and combining with control charts to achieve processing quality control, it can help improve blad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/19G05B19/408
CPCG05B19/19G05B19/4086G05B2219/45225
Inventor 王佩胡磊郭泽坤贺华
Owner XIDIAN UNIV
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