Method and device for improving metal cladding deposition additive manufacturing accuracy by means of laser edge cutting

Abstract

The invention discloses a method and a device for improving the metal cladding deposition additive manufacturing accuracy by means of laser edge cutting. The method includes 1), depositing a first layer of metal droplets, and cutting and machining side surfaces of the first layer of deposited metal by the aid of laser; 2), depositing a second layer of metal droplets, and cutting and machining side surfaces of the second layer of deposited metal by the aid of laser; 3), depositing an N layer of metal droplets, and cutting and machining side surfaces of the N layer of deposited metal by the aid of laser; 4), repeating the same procedure until metal droplets are completely deposited and side surfaces of the last layer of deposited metal are cut and machined so that the metal cladding deposition forming accuracy is improved. The method and the device have the advantages that the machining flexibility is high owing to a laser edge cutting mode, the quality of products is stable, a heat affected zone is small, the follow-up machining amount is low, the micro-machine precision machining accuracy and efficiency are effectively improved, the probability of batch production of parts of micro-machines is effectively increased, and the machining cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of precision machining, and relates to a method for improving the precision of metal cladding deposition and additive manufacturing, especially a method for improving the precision of metal cladding deposition and additive manufacturing by using laser edge cutting. Background technique [0002] At present, many research institutions at home and abroad, such as the MicroFab commercial company in the United States, the University of Toronto in Canada, Northwestern Polytechnical University in China, and Huazhong University of Science and Technology, etc., mainly focus on the droplet ejection mechanism, drive mode selection and droplet formation technology. Thermal state analysis during flight, etc. However, there are few studies on how to ensure the precision of droplet deposition. [0003] Product precision, raw material performance and processing efficiency are three important factors restricting the droplet...

AI Technical Summary

Problems solved by technology

[0007] The traditional droplet cutting uses a diamond saw for mechanical cutting. Its disadvantage is that the droplet should not be too thin. The material of some droplets is very brittle. It is easy to break when cutting, and it is easy to damage the surrounding components. And the diamond saw blade also easily damaged

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