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Path scanning algorithm with variable parameters based on laser cladding technology in parts processing

A technology of laser cladding and parts processing, applied in the direction of additive processing, metal material coating technology, coating, etc., can solve the problem of inability to guarantee the stability of processing quality, and ensure the positioning, processing quality, and processing efficiency. Effect

Active Publication Date: 2020-01-31
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • Path scanning algorithm with variable parameters based on laser cladding technology in parts processing
  • Path scanning algorithm with variable parameters based on laser cladding technology in parts processing
  • Path scanning algorithm with variable parameters based on laser cladding technology in parts processing

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Embodiment 1

[0037] A variable parameter path scanning method based on laser cladding technology in part processing, for figure 2 For the laser scanning path shown, the curvature has a large change, and the method of processing the scanning path is as follows,

[0038] (1) Divide the processing path into certain points at equal intervals, and number them in sequence. The results of the division and numbering are as follows: image 3 shown. In this embodiment, the interval is 10mm, mainly considering that the curvature change frequency is not high, only two changes occur in the processing process, and the changed section is long, the interval of 10mm will not cause the loss of path segmentation, and the method can also be reduced amount of computation. According to the actual processing situation, different intervals can be selected.

[0039] (2) Determine the curvature threshold according to the processing capacity of the equipment, determine the influence of scanning speed and powder...

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Abstract

The invention provides a variable parameter path scanning method based on laser cladding technology in part processing, and relates to the technical field of laser cladding forming. It includes the following steps: select the dividing points in the processing path and number them; determine the curvature threshold according to the processing capability of the equipment, and adopt corresponding scanning speed and powder feeding amount for different curvature ranges; calculate the curvature of the dividing points and compare with the curvature threshold , record points higher than the curvature threshold; group adjacent recording points into a group, and use two endpoints of each group or take an extra point from the two endpoints as the starting point and end point of the low-speed scanning path; for different scanning paths Use the corresponding scanning speed and powder feeding amount for processing; complete the processing. Based on the laser cladding technology provided by the present invention, according to the processing capability of the equipment and the planning of the scanning path, the process parameters (mainly scanning speed and powder feeding amount) are changed to achieve the purpose of simultaneously ensuring processing quality and processing efficiency.

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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10B33Y50/02B33Y10/00
CPCB33Y10/00B33Y50/02C23C24/10
Inventor 陈雪松朱立达杨志超王书豪袁存涛张海权
Owner NORTHEASTERN UNIV LIAONING