Additive Bead Modeling for Simpler 3D Deposition Trajectory Planning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing additive manufacturing methods require complex arithmetic operations to create a trajectory plan for bead formation, making the process cumbersome and prone to errors.
Innovation Solution
The method involves reading three-dimensional shape data, determining deposition directions, dividing the model into layers, and creating a bead model of multiple lines using trapezoidal and parallelogram shapes for non-adjacent and adjacent bead positions respectively, simplifying the arithmetic operations required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a circular or elliptic model is used to approximate bead shape in welding pass setting and trajectory planning, then the geometric calculation becomes complicated, but the model can represent curved surfaces
Solution Approach 1:
The patent segments the continuous circular or elliptic bead model into discrete linear segments. By dividing the curved bead path into multiple straight-line segments, the complex curved surface representation is transformed into simple linear calculations, reducing arithmetic complexity while maintaining adequate geometric accuracy for manufacturing purposes.
2Manufacturing precision
If curvature parameters are set to express joint cross section from welding conditions, then the trajectory plan becomes complicated, but the joint geometry can be accurately represented
Solution Approach 1:
The patent segments the joint cross-section representation into discrete linear elements rather than using continuous curvature functions. This segmentation allows the trajectory plan to be constructed from simple linear segments that can be easily calculated and executed, eliminating the need for complex curvature parameter calculations while still achieving accurate joint geometry through proper segment positioning and sizing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the creation of a trajectory plan for bead formation without complex arithmetic, resulting in easier and more accurate production of additively-manufactured objects.
Implementation Method 1
depositing a bead formed by melting and solidifying a filler metal on a base
Implementation Method 2
depositing a bead formed by melting and solidifying a filler metal on a base
Data Source
AI summary
In preparing a built-up object by depositing beads, in a step of dividing into the bead model, a trapezoidal bead model a cross section of which is a trapezoidal shape is applied to a position where the bead is formed in a portion not adjacent to an existing bead, and a parallelogram bead model a cross section of which is a parallelogram is applied to a position where the bead is formed adjacent to a bead that is already formed, in the parallelogram bead model opposite sides in the deposition direction of the bead being parallel to each other, and opposite sides in the bead arrangement direction being parallel to a side of another bead mode that is adjacent.