Additive and subtractive combined machining method based on electron beam fusing

A composite processing and electron beam technology, applied in electron beam welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problem of low precision, and achieve the effect of simplifying the processing process, saving workshop space, and improving manufacturing precision and production efficiency

Inactive Publication Date: 2017-06-27
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0008] In order to overcome the deficiency of low precision of existing metal addition and subtraction processing methods, the present invention provides an addition and subtraction composite processing method based on electron beam fuse

Method used

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Embodiment Construction

[0028] The specific steps of the increase and decrease compound processing method based on the electron beam fuse of the present invention are as follows:

[0029] (1) Establish a three-dimensional geometric model of the solid part on the computer, and record it as Model I. Properly enlarge the outline size of model I to obtain three-dimensional geometric model II. The enlarged size is preferably no more than 2mm according to the accuracy of the electron beam fuse printing equipment and the size of the parts. Slice the 3D geometric model II to obtain slice data and plan the scanning path of the electron beam;

[0030] (2) Vacuumize the forming chamber, and the vacuum degree should reach 10 -3 Pa level;

[0031] (3) The sliding table driving rod drives the sliding table to move on the guide rail to the bottom of the additive manufacturing module;

[0032] (4) Use the electron beam fuse additive manufacturing module to print a circular platform on the slide table, and the pla...

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Abstract

The invention discloses an increasing and decreasing composite processing method based on an electron beam fuse, which is used to solve the technical problem of low precision of the existing metal increasing and decreasing material processing methods. The technical solution is to use the three-dimensional contour geometric information of the processed part, and the layer geometric information to generate numerical control codes that fuse the electron beam fuse deposition parameters and machining parameters through the computer. The additive molding system scans the accumulated materials layer by layer according to the contour trajectory. Material processing control, finally forming three-dimensional solid parts. The present invention combines electron beam fuse additive manufacturing and traditional mechanical processing subtractive manufacturing at the same time. The advantages of the two processes are complementary, and realizes the high-efficiency, high-precision, and high-fatigue strength personalized customized fast and precise manufacturing of complex parts. The invention can not only be used in the manufacture of the whole parts, but also can be used in the processing of parts with complicated structure and difficult processing.

Description

technical field [0001] The invention belongs to the field of metal addition and subtraction material processing, in particular to an addition and subtraction composite processing method based on an electron beam fuse. Background technique [0002] The vast majority of production enterprises at home and abroad use traditional mechanical processing techniques in the metal processing process. The biggest advantage of this process is that the surface quality of the processed parts is high, the efficiency is high, and it is convenient for mass production. But the disadvantage is that it is more difficult to process parts with complex structures, and parts with structural interference cannot be processed at one time, and rough production must be carried out first, which also restricts the further improvement of traditional machining production efficiency and processing range. [0003] Electron beam fuse deposition rapid manufacturing technology is a typical high-energy beam rapid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B23K15/00
CPCB23P23/04B23K15/0086
Inventor 汪焰恩姜安国魏庆华杨明明柴卫红李欣培王淑志车煜
Owner NORTHWESTERN POLYTECHNICAL UNIV
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