Separable Fabrication Table for Binder Jetting Transfer
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Solution Overview
Problem
Existing binder jetting fabrication methods face challenges in securely fixing and transferring three-dimensional fabricated objects from the fabrication table to the sintering step, particularly due to warping of the fabrication plate and the risk of damaging delicate structures during handling.
Innovation Solution
A fabrication table with a separable heat-resistant portion and a rigid supporter allows for the secure placement and transfer of three-dimensional objects, enabling efficient automation from the fabricating to the sintering step without direct handling, using a separable ceramic portion on a metal supporter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fabrication plate is heat-treated to generate warping for fixing, then the fabrication plate can be securely fixed to the support table, but the fabrication plate cannot be easily separated and transferred to the sintering step
Solution Approach 1:
The fabrication table is divided into two distinct parts: a heat-resistant separable portion (fabrication plate) and a rigid supporter (support table). The separable portion can be independently removed from the supporter after fabrication, allowing the fabricated object to be transferred to the sintering step without moving the entire support table. This segmentation resolves the contradiction by enabling both secure fixing during fabrication and easy transfer after fabrication.
2Reliability
If the entire fabrication table is transferred to the sintering step, then the fabricated object can be moved without direct handling, but the large size and weight of the support table make automation difficult
Solution Approach 1:
By segmenting the fabrication table into a small separable portion and a large supporter, only the small separable portion needs to be transferred to the sintering step. This eliminates the need to move the entire large support table, significantly reducing automation complexity while maintaining object integrity during transfer.
Solution Approach 2:
The separable portion is extracted as a distinct transferable component from the support table. This extracted portion carries the fabricated object and can be independently handled by automated systems, avoiding the complexity of moving the entire fabrication table while ensuring the object is protected during transfer.
3Ease of operation
If a non-heat-resistant support table is used, then the fabrication plate can be separated for transfer, but the support table cannot withstand the high temperatures of the sintering step
Solution Approach 1:
The system is segmented into a heat-resistant separable portion and a non-heat-resistant supporter. The separable portion, which contacts the fabricated object, is made of heat-resistant material (e.g., ceramic, graphite) that can withstand sintering temperatures. The supporter provides mechanical support during fabrication but is not exposed to high temperatures. This segmentation allows the separable portion to be transferred to the sintering step while the supporter remains in the fabrication chamber.
Solution Approach 2:
The heat-resistant separable portion is extracted as the transferable component that will be exposed to high temperatures during sintering. The non-heat-resistant supporter is left behind in the fabrication chamber. This extraction ensures that only the necessary component (separable portion) that requires heat resistance is transferred to the sintering step.
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 configuration ensures the secure handling and transfer of delicate objects to the sintering step, preventing damage and enabling automated processing, while the rigid supporter withstands the load and the heat-resistant separable portion facilitates efficient sintering without being damaged.
Implementation Method 1
The separable portion is formed of a heat-resistant member on which a three-dimensional fabricated object is to be placed
Implementation Method 2
The supporter is formed of a rigid material and configured to support the separable portion
Data Source
AI summary
A fabrication table includes a separable portion and a supporter. The separable portion is formed of a heat-resistant member on which a three-dimensional fabricated object is to be placed. The supporter is formed of a rigid material and configured to support the separable portion.