Node-Resolved Tool Paths for Continuous Fiber 3D Printing
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Solution Overview
Problem
Existing additive manufacturing technologies face challenges in controlling the deposition of continuous reinforcements within structures, particularly in ensuring optimal placement and orientation to enhance strength and stability, especially when using continuous fibers embedded within the matrix.
Innovation Solution
A method and system for determining a tool path that involves receiving placement and operation data to resolve the placement of nodes, each with regional tool paths, to control the additive manufacturing process, including the use of a computer processor to generate and execute these paths, ensuring optimal placement and orientation of continuous reinforcements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional FDM manufacturing is used, then the manufacturing process is simple and straightforward, but the strength and mechanical properties of the manufactured structure are limited
Solution Approach 1:
The patent embeds continuous fibers (reinforcements) within the thermoplastic matrix material discharged from the print head. This composite approach combines the ease of FDM processing with the high strength properties of continuous fibers, thereby improving structural strength without fundamentally changing the manufacturing process complexity
Solution Approach 2:
The system enables selective placement and orientation of continuous fibers within specific regions of the manufactured structure. By controlling fiber distribution and alignment locally according to stress patterns and load requirements, the patent optimizes mechanical properties in critical areas while maintaining overall process simplicity
2Strength
If continuous fibers are embedded within the matrix, then the strength of the structure is multiplied, but the control of fiber placement and orientation becomes difficult
Solution Approach 1:
The patent employs a dynamic control system that adjusts the orientation and placement of continuous fibers in real-time based on the current tool path and structural requirements. The system can rotate and reorient fibers during the deposition process to align with principal stress directions, ensuring precise fiber placement throughout the manufacturing process
Solution Approach 2:
The system incorporates feedback mechanisms that monitor the position, orientation, and deposition status of continuous fibers during additive manufacturing. This feedback enables real-time adjustments to maintain precise fiber placement and orientation, ensuring optimal structural properties are achieved
3Strength
If complex tool paths are generated to optimize reinforcement placement, then the mechanical properties of the structure are improved, but the computational time and processing complexity increase
Solution Approach 1:
The system performs preliminary analysis and pre-planning of fiber reinforcement patterns before the actual additive manufacturing process. By pre-calculating optimal fiber orientations and placement strategies based on expected load conditions, the system reduces computational time during manufacturing while ensuring optimal mechanical properties are achieved
Solution Approach 2:
The patent divides the complex tool path generation into manageable segments or regions. Each segment is optimized independently based on local structural requirements and stress patterns, then assembled into the complete tool path. This segmentation reduces overall computational complexity and processing time while maintaining optimal fiber placement throughout the structure
Data Source
AI summary
Methods and associated systems and apparatus for determining a tool path for use in additively manufacturing a structure. The methods may include receiving placement data indicative of a relative placement of a plurality of nodes, each node including one or more regional tool paths and each regional tool path for additively manufacturing a region of the structure. The methods may also include receiving operation data indicative of an operation to be performed in relation to at least one of the plurality of nodes, and resolving the at least one of the plurality of nodes into a resolved tool path for use in additively manufacturing the structure based on the received placement data and operation data.