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Weak-rigidity molded surface regional milling method

A weakly rigid, sub-regional technology, applied in milling machine equipment, milling machine equipment details, metal processing equipment, etc., can solve the problem of high quality risk

Active Publication Date: 2021-07-30
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above-mentioned patents have improved the processing control method of weakly rigid parts, they cannot solve the problems of deviation and high quality risk of aircraft structural parts caused by milling deformation of weakly rigid surface structures

Method used

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  • Weak-rigidity molded surface regional milling method
  • Weak-rigidity molded surface regional milling method
  • Weak-rigidity molded surface regional milling method

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Embodiment 1

[0042] Below in conjunction with accompanying drawing and embodiment the present invention will be further described, but the patent of the present invention is not limited to this example.

[0043] The present invention proposes a sub-area milling method for a weakly rigid profile, the specific implementation content and precautions are as follows:

[0044] S1: Profile 1 milling parameter setting

[0045] Facing the characteristics of the aluminum alloy material of the processed parts, comprehensively considering the milling surface quality, cutting force and vibration and other factors, the milling tools and processing parameters for the processing of the parts are selected, and the variable curvature surface 1 milling meets the processing quality under the working condition of good rigidity Require.

[0046] Two processing schemes are designed, namely:

[0047] Option 1 uses a diamond insert end mill with 4 teeth for milling, the tool diameter D 1 =20mm, and set the pro...

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Abstract

The invention belongs to the field of numerical-control processing, and specifically relates to a weak-rigidity molded surface regional milling method. The weak-rigidity molded surface regional milling method comprises the following steps: setting a part profile milling processing tool and parameters, which include a few-tooth tool scheme and a multi-tooth tool scheme, measuring cutting force, performing test piece design and tool deformation finite element simulation to obtain a relation function U (x, y) between simulation deformation amount U and position coordinate values (x, y), determining critical values Us and Ud of area dividing according to test piece cutting testing and processing requirements, performing part finite element simulation to obtain a relation function Up (x,y) between part simulation deformation amount Up and the position coordinate values (x,y), comparing Up(x,y) with the critical values Us and Ud determined in the fourth step, performing area dividing and parameter matching, outputting processing scheme information such as processing areas and parameters, programming for processing. The in-area milling method improves milling processing stability of the weakly-rigid profile of an airplane structural part, and prevents processing deformation deviation to cause the quality problem.

Description

technical field [0001] The application belongs to the field of numerical control machining, and in particular relates to a sub-area milling method for weakly rigid profiles. Background technique [0002] Due to the performance requirements of high speed and high maneuverability of the aircraft, the structure of the aircraft structural parts is complex and has many thin-walled structures. The weakly rigid thin web and edge structures have large tool deformation during the processing process, resulting in deviations in processing dimensions. In order to ensure the shape and position accuracy of the structural parts after assembly, the shape and dimensional accuracy of the thin-walled structure of the structural parts are relatively high. The forced vibration amplitude of the process is very large, and the part structure vibrates violently during the intermittent processing such as milling, and defects such as surface vibration lines and pits are prone to occur on the processed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00
CPCB23C3/00
Inventor 牟文平姜振喜宋戈李卫东黄明聪赵中刚沈昕
Owner CHENGDU AIRCRAFT INDUSTRY GROUP