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Method for improving yield rate of aviation blade machining

An aviation blade and yield technology, applied in metal processing, metal processing equipment, metal processing machinery parts, etc., can solve the problems of reduced processing efficiency, poor blade accuracy, blade processing deformation, etc., to prevent processing deformation and improve processing efficiency. , the effect of large cutting depth of the tool

Active Publication Date: 2019-04-12
ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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Problems solved by technology

[0003] The blade is a thin-walled curved surface part. In order to avoid waste products during processing, the value of the cutting parameters must be mastered; if the cutting parameters are too large, the stress will exceed the yield stress of the material. Under the action of the cutting force, the blade will produce processing deformation. As a result, the precision of the processed blade is poor, and its profile cannot meet the design requirements, and it is difficult to be consistent with the theoretical design stably; too small cutting parameters will reduce the processing efficiency

Method used

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  • Method for improving yield rate of aviation blade machining
  • Method for improving yield rate of aviation blade machining
  • Method for improving yield rate of aviation blade machining

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Embodiment 1

[0030] A method for improving the yield rate of aerospace blades, such as figure 1 shown, including the following steps:

[0031] Step 1. Establish a three-dimensional model of the aviation blade, such as figure 2 As shown, this aviation blade includes the blade tenon 1 and the blade root 2 at the end, the blade tip 4 at the front end, and the blade back 3 and the blade pot 5 connecting the blade root 2 and the blade tip 4; this blade is an aviation thin-walled blade, and is The first stage stator blade of an aero-engine, the size is 125mm*40mm*6mm.

[0032] Step 2. Import the blade model into the finite element analysis software Abaqus, draw up a machining path that is spirally distributed along the length direction of the blade back 3 and the blade pot 5, and select multiple loading points equidistantly on the blade machining path as cutting points during stress analysis. point of application of force.

[0033] Step 3. Convert the depth of cut of the tool at the first lo...

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Abstract

The invention discloses a method for improving the yield rate of aviation blade machining. According to the method for improving the yield rate of the aviation blade machining, the cutting force applied on cutting points of a cutter on a blade model machining path is simulated and analyzed by a finite element analysis software, the obtained maximum stress is compared with the yield stress, and optimal cutter cutting depth of the cutting points is obtained by iterative adjustment; the optimal cutter cutting depth of each of the cutting points in the blade machining is obtained by iterative computations on the multiple cutting points of the machining path, the cutter cutting depths and coordinates of the points are input into a cutter machining run code of a numerically-controlled machine tool, and actual blade machining is carried out by the numerically-controlled machine tool; blade machining deformation is prevented under the machining parameters, and the cutting depth of the cutter is maximum; and the blade machining efficiency and the blade machining yield rate are improved under the premise that the machining quality is guaranteed.

Description

technical field [0001] The invention relates to a method for improving the yield rate of aviation blade processing, in particular to a method for obtaining the critical cutting depth of a tool in blade processing through iterative solution in finite element software, belonging to the field of aviation thin-wall blade processing. Background technique [0002] The blade of an aero-engine is the core part of the aviation manufacturing industry, which has high requirements for its manufacturing precision. The machining accuracy and stability of the blade have a direct impact on the performance of the aero-engine. In the process of blade processing, since the processing efficiency and processing quality are difficult to meet the requirements at the same time, it is necessary to improve the processing efficiency as much as possible under the premise of ensuring the processing quality. [0003] The blade is a thin-walled curved surface part. In order to avoid waste products during...

Claims

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Application Information

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IPC IPC(8): B23Q15/02
CPCB23Q15/02
Inventor 胡俊林沈阳涂集林李巍田中君童水光易军尹玉明
Owner ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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