Support automatic repairing method based on additive manufacturing

Abstract

The invention discloses a support automatic repairing method based on additive manufacturing. The method specifically comprises the following steps that 1, printed image information of each layer of support is collected by a camera in the forming process, and the printed image information is fed back to a computer control system; 2, whether the printing condition of the current layer of support isnormal or not is identified through the computer control system, contour features of a printing failure area are extracted if a support printing failure area exists, and a repair path is generated inthe contour; and 3, the repair path is called for repairing printing of the printing failure area. According to the support automatic repairing method based on additive manufacturing, when local support printing fails, detection and recognition are carried out in time, repairing is performed, the forming period is shortened, the printing efficiency is improved, the risk of part forming failures can be reduced, and the labor cost in the production process can be further reduced.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a support automatic repair method based on additive manufacturing. Background technique [0002] With the continuous development of laser selective melting (SLM) forming technology, it is more and more urgent to use this process to form complex structural parts and its efficiency. Under normal circumstances, in the process of forming parts with complex structures, a grid support of a certain thickness is first added to the base material, and the part entity is formed on the support after the grid support is formed. The purpose of adding support is 1) to play a supporting role for the suspended part of the part or the area with a small angle; 2) to facilitate the diffusion of accumulated heat during the forming process of the part; 3) to play a role in the deformation of the part due to stress concentration during the forming process Tensile and protective effects, e...

AI Technical Summary

Problems solved by technology

[0003] During the SLM printing process, sometimes local support printing failures may occur, which will affect the subsequent forming of the part

Based on this problem, the general solution is to suspend printing and repair the support manually. On the one hand, the manual operation takes a relatively long time and the efficiency is low; risk of failure

Images