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Efficient numerical control machining method for thin and long beam type parts

A processing method and parts technology, applied in the field of high-efficiency numerical control processing, can solve the problems of adding auxiliary heat treatment process, difficult processing, and affecting the service life of aircraft

Inactive Publication Date: 2016-03-09
SHENYANG AIRCRAFT CORP
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of aviation manufacturing, the parts of the integral structure are widely used, which is concentrated on some load-bearing supporting beam parts, and most of the beam parts of the integral structure need to be made of forging blanks, and the distribution of such forging blanks is uneven. , is a slender structure, prone to warping or side bending deformation in the rough and fine machining process, the web, ribs, and edge strips have a small dimensional tolerance zone, and the processing is difficult. If corresponding methods are not adopted in the process, it will inevitably increase Auxiliary heat treatment process or substandard products appear, affecting the service life of the entire aircraft

Method used

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  • Efficient numerical control machining method for thin and long beam type parts
  • Efficient numerical control machining method for thin and long beam type parts
  • Efficient numerical control machining method for thin and long beam type parts

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Embodiment Construction

[0026] Such as Figure 1 to Figure 4 As shown, a high-efficiency CNC machining method for slender beam parts includes the following steps:

[0027] 1) Analyze the material information of the parts, the state of the wool and the structural characteristics, and select the CNC machine tool;

[0028] 2) Set the rough and finish machining process plan, set the front side of the part as side A, and set the back side as side B;

[0029] 2.1) Milling datum positioning surface for straightening, alignment and fixed positioning;

[0030] 2.2) Drilling process holes, milling out several process bosses, the process bosses are arranged symmetrically along the axial direction of slender beam parts;

[0031] 2.3) Use the pressure plate to fix all the process bosses, rough machine the A surface of the part, and process it from the blank to a margin of 7.0mm;

[0032] 2.4) Turn the part over, fix all the process bosses with the pressure plate, rough machine the B side, and process it from t...

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Abstract

The invention relates to an efficient numerical control machining method for thin and long beam type parts. The efficient numerical control machining method includes the following steps: (1) analyzing part material information, the wool state and the structure feature, and selecting a numerical control machining tool; and (2) setting a rough and finish machining process scheme, setting the front faces of the parts to be faces A, and setting the back faces of the parts to be faces B; and through a correction working procedure of a boss of a milling process, reducing the machining deformation of the parts, and meeting the technical requirements through repeated front and back face rough and finish machining. By means of the efficient numerical control machining method, a pressing device and a process lug sheet are arranged, the rough and finish machining allowance is reasonably allocated, the correction working procedure is arranged in a jointing working procedure for part rough and finish machining, and efficient numerical control machining of the thin and long beam type parts is achieved.

Description

technical field [0001] The invention relates to a high-efficiency numerical control machining method for slender beam parts, belonging to the field of numerical control machining. Background technique [0002] In the field of aviation manufacturing, the parts of integral structure are widely used, which is concentrated on some load-bearing supporting beam parts, while most of the beam parts of integral structure need to be made of forging blanks, and the distribution of such forging blanks is uneven , is a slender structure, prone to warping or side bending deformation in the rough and fine machining process, the web, ribs, and flanges have a small dimensional tolerance zone, and the processing is difficult. If corresponding methods are not adopted in the process, it will inevitably increase The auxiliary heat treatment process may produce substandard products, which affects the service life of the entire aircraft. Contents of the invention [0003] The technical problem ...

Claims

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Application Information

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IPC IPC(8): B23P15/02
CPCB23P15/02B23P2700/01
Inventor 孙国雁王金海
Owner SHENYANG AIRCRAFT CORP
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