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Machining technology method for miniature integrated impeller

A technology of integral impeller and machining process, applied in the direction of program control, instrumentation, electrical and digital data processing, etc., can solve the problems of difficult-to-machine structure, no proposed machining process, and no milling parameter selection and optimization part, so as to achieve optimal cutting parameters, the effect of improving processing stability

Active Publication Date: 2019-04-09
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The poor machinability of the material makes the machining of the overall impeller face the dual challenges of difficult-to-machine structures and difficult-to-machine materials
[0003] The existing integral impeller machining methods do not involve the selection and optimization of milling parameters and do not propose a complete machining process, but only emphasize the tool path and the overall machining method of five-axis CNC

Method used

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  • Machining technology method for miniature integrated impeller

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Embodiment Construction

[0028] Such as figure 1 As shown, this embodiment relates to a processing method of a miniature integral impeller, and the specific steps include:

[0029] Step 1: Use CAM software to design and calculate the tool path and simulate the virtual machining process to prevent collisions and overcutting caused by unreasonable and wrong tool path planning from causing serious damage to the process system, and then determine through experiments Suitable tool inclination.

[0030] The virtual machining process simulation can effectively reduce the manufacturing cost of the product, shorten the product manufacturing cycle, and establish a simulation environment for the machining process system, which is extremely important for the numerical control machining of complex structures such as integral impellers.

[0031] During the machining process, with the change of the tool inclination angle, the tool and the workpiece surface will form different contact areas. Too small an inclination angle...

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Abstract

The invention discloses a machining technology method for a miniature integrated impeller. A proper cutter dip angle is determined through cutter path design and virtual machining process simulation,then, a milling process is subjected to force thermal modeling to optimize machining parameters, and finally, the optimized parameters are used for carrying out numerical control milling and machiningon the miniature integrated impeller through a five-axis numerical control machine tool. By use of the method, while machining quality is guaranteed, machining efficiency is improved, the localization of the manufacture technology of the integrated impeller of the type of difficult-to-machine materials is realized, and the manufacture technology level of Chine in the field of aircraft engines isimproved.

Description

Technical field [0001] The invention relates to a technology in the field of aeronautical engineering manufacturing, in particular to a processing method suitable for miniature integral impellers made of nickel-based superalloys and other materials. Background technique [0002] The compressor and turbine of the micro-turbojet engine are generally integral impellers, which reduces the number of parts and simplifies the blade connection structure, which provides a basis for achieving the advantages of the micro-turbojet engine with high performance (large thrust-to-weight ratio) and small size. The blade shape of the integral impeller is complex, the blades are thin and twisted, the flow channel is narrow and deep, the deformation is large after force, the precision is high, the blades are many and dense, and the machining allowance is large; it needs to withstand high temperature and pressure, gas corrosion, heat Stress, etc., have formed a great test for the oxidation resistance...

Claims

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Application Information

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IPC IPC(8): G05B19/4097G05B19/4069G06F17/50
CPCG05B19/4069G05B19/4097G06F30/23G06F2119/06
Inventor 陈明李富长陈小刚黄鹿安庆龙明伟伟
Owner SHANGHAI JIAO TONG UNIV
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