Method for controlling surface stress-strain field of casing part based on constant cutting force

A surface stress and control method technology, applied in computer control, digital control, program control, etc., can solve problems such as the control method of stress and strain field on the surface of complex casing parts of aero-engines that have not yet been disclosed, and achieve huge economic and social benefits , Good practical value, reasonable design effect

Active Publication Date: 2019-02-15
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology

So far, there is no published method for surface stress-strain field control for aeroengine complex casing parts

Method used

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  • Method for controlling surface stress-strain field of casing part based on constant cutting force
  • Method for controlling surface stress-strain field of casing part based on constant cutting force
  • Method for controlling surface stress-strain field of casing part based on constant cutting force

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Embodiment Construction

[0046]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0047] The present invention proposes a method for controlling the stress-strain field on the surface of casing parts based on constant cutting force, comprising the following steps:

[0048] Step 1, importing the part model, i.e. the CAD model of the part target shape, into the computer;

[0049] Step 2, importing the original CNC program into the computer;

[0050] The original numerical control program includes cutting parameters, tool path and tool swing angle, which are used to control the machine tool to perform corresponding processing actions; the original numerical control prog...

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Abstract

The invention relates to a method for controlling the surface stress-strain field of a casing part based on a constant cutting force, and belongs to the technical field of aerospace numerical controlmachining. The control method includes the following steps: (1) importing a part model into a computer; (2) importing an original numerical control program into the computer; (3) importing machine tool information into the computer; (4) setting cutter parameters; (5) simulating a cutting force; (6) analyzing simulation data; (7) judging the stability of the cutting process; (8) judging whether thecutting process belongs to local run-out; (9) adjusting the original numerical control program: (10) interrupting the original numerical control program adaptively; (11) optimizing the cutting parameters of the numerical control program by segments; (12) outputting an optimal numerical control program; and (13) applying the optimal numerical control program for processing verification. The methodof the invention can be applied to the surface stress-strain field control of various integral casing parts, and has huge economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of aerospace numerical control machining, and in particular relates to a method for controlling the surface stress and strain field of casing parts based on constant cutting force. Background technique [0002] Aeroengine casing parts have complex structures and high machining accuracy requirements. They are typical large thin-walled and difficult-to-machine parts. The processing deformation problem has always been one of the key technical difficulties in aero-engine manufacturing. At present, the formulation of the machining process plan of the casing parts relies on the engineering experience of the personnel, and the numerical control program compiled only performs geometric simulation verification, without considering the influence of residual stress on the deformation of the parts. Existing studies have shown that residual stress is one of the important factors that lead to machining deformation of part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/4097G05B19/18
CPCG05B19/18G05B19/4097
Inventor 周鑫高阳兰影铎张森堂杨印权
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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