Peel Operation in Additive Fabrication via Container Bending
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In additive fabrication, particularly 3D printing, the separation of parts from surfaces during the printing process often results in excessive force application, leading to part deformation or mechanical failure, as existing methods require significant force to break the adhesive bond between the part and the container, which can be uneven and disruptive.
Innovation Solution
The method involves actively bending the container around fixed points using force generators, such as actuators, to gradually and evenly separate the part from the surface, reducing the peak forces applied to the part and minimizing deformation risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If significant force is applied to break the adhesive bond between the part and container, then the part can be separated from the surface, but the part deformation or mechanical failure occurs
Solution Approach 1:
The container is divided into multiple segments or sections that can be independently actuated. By segmenting the container structure, the peel force is distributed across multiple points rather than applying a single concentrated force, enabling gradual separation while minimizing peak forces that cause deformation
Solution Approach 2:
The container is transformed from a rigid structure to a dynamically controllable structure with flexible portions that can be selectively actuated. The flexible portions allow progressive deformation and peeling action, enabling the separation process to occur gradually through controlled dynamic movement rather than sudden rigid force application
2Reliability
If force is applied to separate the part from the container, then separation is achieved, but the force application is uneven and disruptive
Solution Approach 1:
Multiple actuators are distributed at different locations along the container, each responsible for actuating a specific segment. This segmentation of the actuation system ensures that force is applied evenly across the container surface, preventing localized stress concentration and disruptive peeling patterns
Solution Approach 2:
Different portions of the container are assigned different degrees of flexibility and actuation characteristics. By localizing the flexible portions at specific locations and controlling their actuation timing and magnitude, the system achieves uniform force distribution while maintaining the necessary separation function
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 a more controlled and gradual separation of the part from the surface, reducing the risk of deformation and mechanical failure by applying forces more evenly, thereby improving the precision and integrity of the printed parts.
Implementation Method 1
one or more force generators coupled to the container to apply a force to a portion of the container, thereby actively bending the container around at least one fixed point
Data Source
AI summary
According to some aspects, a method of additive fabrication wherein a plurality of layers of material are formed is provided. The method may comprise forming a layer of material in contact with a container, and subsequent to the forming of the layer of material, actively bending the container around at least one fixed point such that the layer of material separates from the container. According to some aspects, an additive fabrication apparatus configured to form a plurality of layers of material is provided. The apparatus may comprise a container, a build platform, one or more force generators, and at least one controller configured to, subsequent to formation of a layer of material in contact with the container, actively bend the container around at least one fixed point via the one or more force generators, such that the layer of material separates from the container.