Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller

An integral impeller and five-axis linkage technology, applied in metal processing, automatic control devices, metal processing equipment, etc., can solve the problems of large data processing volume, low processing efficiency, and increased processing time, so as to improve processing efficiency and margin Uniformity, the effect of reducing production costs

Inactive Publication Date: 2011-06-08
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Since this processing method is processed at least twice, the processing time is doubled, the amount of data processing is large, and the processing efficiency is low.

Method used

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  • Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller
  • Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller
  • Five-axis linkage variable-axis plunge milling numerically controlled processing method for blade part of integral impeller

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0029] The specific dimensions, materials and processing parameters of the integral impeller of the present embodiment are as follows:

[0030] The maximum outer diameter of the blade: 936mm;

[0031] The minimum outer diameter of the blade: 482mm;

[0032] The maximum chord width of the blade: 210mm;

[0033] Number of blades: 20;

[0034] Maximum thickness of blade tip: 4.5mm;

[0035] Maximum thickness of blade root: 12.5mm;

[0036] Material: titanium alloy;

[0037] Processing parameters: processing line speed 30 ~ 40m / min;

[0038] The five-axis linkage variable-axis plunge-milling CNC machining method of the integral impeller blade part of the present invention is carried out according to the following steps:

[0039] 1) at figure 1 In the process...

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Abstract

The invention discloses a five-axis linkage variable-axis plunge milling numerically controlled processing method for a blade part of an integral impeller. The method comprises the following steps: 1) dividing a spatial free-form surface to be processed of a part into multiple areas to be processed; 2) analyzing the stress conditions in a tooling process; 3) selecting a proper plunge milling cutter; 4) planning a processing route; 5) generating a track of a numerically controlled cutter; 6) simulating by utilizing a numerically controlled program; 7) editing the numerically controlled program; and 8) processing the part. The method is characterized in that by adopting a five-axis linkage variable-axis plunge milling manner, the processing efficiency of removing large margin by virtue of rough grooving of the integral impeller is improved, and the processing problem that finishing process with a ball cutter is required as the residual margin on a blade surface is not uniform after the plunge milling of a fixed axle of the free-form surface is solved; and the method disclosed by the invention can be applied to the five-axis numerically controlled milling processing needing to remove large-margin parts of the complicated free-form surface structures such as axial-flow type integral impellers, integral blade rings and the like as well as to the multi-axis numerically controlled milling processing of the parts of simple free-form surface structures such as centrifugal type integral impellers, mould processing and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to a processing method of mechanical parts, in particular to a five-axis linkage variable-axis plunge-milling numerical control processing method for an integral impeller blade part. Background technique [0002] Integral impeller processing technology is one of the key technologies of advanced aero-engines. Due to the limitation of special processing technology on material properties and processing accuracy requirements, machining is still the most widely used processing method; the blade part of the integral impeller is a complex free-form surface , the blade part cannot be forged directly, therefore, the blanks of the integral impeller are mostly integral forgings, which causes the material removal rate of the integral impeller to increase greatly during the processing process, and the maximum removal rate can reach more than 93%. At present, drilling and milling o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/18B23Q15/013
Inventor 岳召启张积瑜李丹李家永杨楠
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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