Laser cladding technology based variable parameter path scanning method during component processing

Abstract

The invention provides a laser cladding technology based variable parameter path scanning method during component processing and relates to the field of laser cladding forming technology. The laser cladding technology based variable parameter path scanning method comprises the following steps: selecting break points on a processing path and numbering the break points; determining the curvature threshold value according to the processing capacity of equipment, and adopting corresponding scanning speeds and powder feeding amount for different curvature ranges; calculating the curvature of each of the break points, comparing the curvature with the curvature threshold value, and recording the points higher than the curvature threshold value; classifying two adjacent recorded points into one group, and regarding the two endpoints of each group, or two additional points at the external parts of the two endpoints as the starting point and end point of a low-speed scanning path; adopting corresponding scanning speeds and powder feeding amount for different scanning paths for processing; and finishing processing. Based on the laser cladding technology, according to the processing capacity of the equipment and the planning situation of the scanning path, and through changing the technological parameters (mainly comprising scanning speed and powder feeding amount), the purposes of ensuring the processing quality and processing efficiency simultaneously are realized.

Description

technical field [0001] The invention relates to the technical field of laser cladding forming, in particular to a variable parameter path scanning method based on laser cladding technology in part processing. Background technique [0002] Additive Manufacturing (AM for short) was proposed and developed by Emanual Sachs of the Massachusetts Institute of Technology in the late 1980s. Compared with traditional subtractive machining, it has obvious advantages in machining. Laser cladding technology (Laser Cladding), as a long-term and mature manufacturing method in additive manufacturing technology, has been applied to a considerable extent in the fields of surface modification, surface repair and rapid prototyping, especially in thin-walled In the manufacture of parts, it has great advantages. Although laser cladding technology has the advantages of high efficiency and strong adaptability to the processing environment, it will have a certain impact on the processing accuracy ...

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Problems solved by technology

However, this method only introduces a process parameter of scanning speed, which cannot guarantee the stability of processing quality.

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