Additive Manufacturing Thermal Shield for Wall-Proximal Printing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Additive manufacturing systems face issues with rapid heat loss near the edges of the fabrication chamber, leading to thermal gradients and defects in objects being generated, as the build material loses heat quickly through the chamber walls due to reduced insulation.
Innovation Solution
A method is introduced where an ancillary element is designed and generated between the target object and the chamber wall to act as a thermal shield, reducing heat loss and maintaining a more uniform temperature by compensating for expected heat dissipation, thereby preventing defects and increasing the usable volume of the print bed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If objects are generated closer to the chamber walls to increase usable volume, then productivity increases, but thermal gradients and defects occur due to rapid heat loss
Solution Approach 1:
A thermal shield component is introduced as an intermediary element positioned between the object and the chamber wall. This shield acts as a thermal mediator that reduces heat loss from the object to the wall, allowing objects to be placed closer to walls while maintaining thermal uniformity and preventing defects.
Solution Approach 2:
The thermal shield is designed and positioned in advance before object generation. By pre-establishing the thermal protection barrier, the system compensates for expected heat dissipation pathways before the thermal gradient problem can occur during the manufacturing process.
2Productivity
If the print bed area is expanded to utilize wall-proximal regions, then productivity increases, but heat loss through walls causes thermal gradients
Solution Approach 1:
The thermal shield serves as a protective intermediary that blocks the direct heat loss pathway from the print bed to the chamber wall. This allows the print bed area to be expanded into wall-proximal regions while the shield maintains thermal stability by reducing conductive heat loss through the wall interface.
3Productivity
If objects are placed near chamber walls to maximize space utilization, then productivity increases, but defects occur due to rapid cooling
Solution Approach 1:
The thermal shield is positioned as an intermediary barrier between the object and the cold chamber wall environment. This shield reduces the cooling rate by providing thermal insulation, thereby preventing defects such as warping or incomplete solidification that would otherwise occur when objects are placed near walls for maximum space utilization.
Solution Approach 2:
The thermal shield provides beforehand cushioning against the harmful thermal effect of rapid cooling near walls. By pre-positioning this protective element, the system cushions the object from thermal shocks and maintains reliable manufacturing quality in previously problematic wall-proximal regions.
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 effectively reduces thermal gradients, prevents defects, and increases the productivity of the additive manufacturing process by allowing objects to be generated closer to the chamber walls without quality issues, utilizing previously non-printable regions and enhancing the overall efficiency of the fabrication chamber.
Implementation Method 1
an ancillary element is designed and generated between the target object and the chamber wall to act as a thermal shield, reducing heat loss
Data Source
AI summary
A method is disclosed. The method may comprise obtaining, using a processor, design data representing an object to be generated in a fabrication chamber of an additive manufacturing apparatus. The method may further comprise determining, based on the design data, that a part of the object is to be generated within a predefined portion of the fabrication chamber. The method may further comprise responsive to said determining, generating, using a processor, data representing an ancillary element to be generated in the predefined portion between the part of the object and a wall of the fabrication chamber. An apparatus and a machine-readable medium are also disclosed.