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Additive and subtractive compounded manufacturing method for achieving high-precision reference transmission

A manufacturing method and fiducial transfer technology, applied in the field of additive manufacturing process, can solve the problems of inconsistent fiducial transfer and difficult positioning, and achieve the effect of eliminating the influence of dimensional accuracy and deformation, improving consistency and flexible assembly.

Inactive Publication Date: 2019-12-31
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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Problems solved by technology

[0006] The invention proposes a composite manufacturing method of adding and subtracting materials to realize high-precision reference transfer, so as to solve the technical problems of difficult positioning and inconsistent reference transfer after the products with complex structures manufactured by additive manufacturing are transferred into the machining process

Method used

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  • Additive and subtractive compounded manufacturing method for achieving high-precision reference transmission
  • Additive and subtractive compounded manufacturing method for achieving high-precision reference transmission
  • Additive and subtractive compounded manufacturing method for achieving high-precision reference transmission

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Embodiment Construction

[0025] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] This embodiment proposes a composite manufacturing method of adding and subtracting materials to realize high-precision reference transfer, and its process is as follows image 3 shown. The additive and subtractive material composite manufacturing method specifically includes the following steps:

[0027] S1. SLM additive forming of complex structural products

[0028] The product categories involved in this embodiment are mainly aimed at products with special-shaped profiles, complex structures that are difficult to process or products with low processing efficiency, such as figure 1 Wing rudder products shown. Select the appropriate SLM process parameters according to its material characteristics, set the ma...

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Abstract

The invention relates to an additive and subtractive compounded manufacturing method for achieving high-precision reference transmission for a special-shaped product of a complex structure. The methodincludes SLM additive forming of the product of the complex structure, additive forming of shape follow-up assembling and clamping molds, integrated assembly conducted on the product and the shape follow-up assembling and clamping molds and integrated finish machining conducted on assemblies. In the additive and subtractive compounded manufacturing method, additional machining of process fasteners for the product is not needed, and the difficulty of control of the structure over the product deformation is lowered; and meanwhile, the product size precision control is achieved, and influences of thick and large fasteners on size precision and deformation of blanks are eliminated; and secondly, the cross section of the product is used as the common reference between different work procedures, the additive process and machining are consistent in reference, manual scribing is omitted, the formulation of the positioning reference is not influenced by subjective factors of people, consistency of product size transmission is improved, and high-precision transmission of the size and the positioning reference in circulation in additive-subtractive working procedures is achieved.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing technology, and in particular relates to an additive and subtractive material composite manufacturing method for realizing high-precision reference transfer for special-shaped complex structure products. Background technique [0002] Selective laser melting (SLM) is a type of additive manufacturing technology. It slices the part model according to a certain thickness, converts the three-dimensional model into a two-dimensional figure, and completes the direct forming and layer-by-layer superposition of the two-dimensional figure. , and finally realize the stacking and forming of the product. The raw material of SLM technology is metal powder, and the slice thickness is determined by factors such as powder particle size, uniformity, fluidity, laser power and molten pool depth, and is generally 0.04mm to 0.06mm. The forming process of SLM is to use high-energy laser beam to directly ...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 许旭鹏刘莹莹钱远宏
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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