Two-machine linkage processing method and system based on 3D metal printing

Abstract

The invention relates to the technical field of 3D metal printing, and specifically discloses a two-machine linkage processing method and system based on 3D metal printing. The system includes: a laser deposition device, a turntable device, a numerically controlled milling machine and a control system; the laser deposition device, For printing parts, it includes: a six-axis manipulator, a laser emitting head, a powder duster, a powder bin and a protective gas pipeline; the turntable device includes a turntable, a tray and a lifting mechanism; the CNC milling machine is used for milling parts ; The control system is used to control the laser deposition device, the turntable device and the numerical control milling machine, so as to work together to produce the target parts. The invention combines laser deposition technology and numerical control milling technology, and can cooperate to produce parts with complex structure, good finish and good quality, effectively solve the problems of long time-consuming and low equipment utilization rate in the current part manufacturing process, thereby improving the quality of parts and production efficiency.

Description

technical field [0001] The present invention relates to the technical field of 3D metal printing, in particular to a new processing method in which additive and subtractive manufacturing are performed simultaneously, and to a complete forming system capable of realizing the technical process of the processing method. Background technique [0002] With the development of science and technology, various high value-added industries have continuously increased the requirements for the complexity, strength, weight, performance and uniqueness of parts. Due to fierce market competition, the development cycle required by customers is increasingly shortened. Under such circumstances, various metal additive manufacturing technologies in the industry are increasingly valued. In metal additive technology, the metal 3D printing process has become the mainstream industrial technology, which can realize product customization, complete small batch production and the production of assembly-f...

AI Technical Summary

Problems solved by technology

[0005] 1. The manufacturing process of the part is to use a tray filled with powder for partial sintering in a single layer, and then lay a new layer of powder to continue sintering. Therefore, if the sintered protruding part must have a supporting structure at the bottom support, this link increases material consumption and prolongs processing time

[0006] 2. The sintered structure of each layer needs to be continuous, or have a lower support structure to ensure that the position of the target part does not shift during processing, which increases the complexity of forming

[0007] 3. CNC equipment can usually only control the laser head to move in three axes, and the angle at which the laser can be effectively emitted is limited, thus reducing the forming range

[0008] 4. The target part will be limited by the space of the powder bed

The structure of traditional equipment is complex, and the available working space is generally small, so only small parts can be manufactured

[0009] 5. If some special auxiliary structures are involved, such as structures with large chamfers, since such structures cannot be directly formed, they need to be processed in other ways and then combined with the main structure, prolonging the production process and Added technical requirements

[0010] 6. Only a single material can be used. If composite materials are used, the materials inside the powder bin will be mixed. Not only will the materials in the part structure be doped, but it will also cause pollution of the powder bin materials.

[0014] 2. The surface finish of parts manufactured by laser metal deposition is very poor, because the metal powder is directly melted to form the part

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