Multi-Axis 3D Printing with Rotatable Platform to Minimize Supports
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional FDM 3D printers face difficulties in printing complex models without external support structures, which consume additional materials and affect the model's surface quality.
Innovation Solution
A Multi-DOF 3D printing device with a multi-axis mechanical system and visual surveillance, enabling automatic model decomposition and optimal printing path planning, allows for printing complex models with minimal external support by rotating the platform to align components suitably for the print head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional single-direction 3D printing is used, then the printing process is simple, but complex models require external support structures that consume additional materials and affect surface quality
Solution Approach 1:
The patent applies dynamics by making the printing platform rotatable with multiple degrees of freedom (at least two rotational DOFs) instead of being fixed in a single orientation. This dynamic capability allows the platform to rotate and reposition components during printing, enabling complex models to be printed without external support structures by adjusting the printing direction dynamically.
Solution Approach 2:
The patent transitions from single-direction printing to multi-directional printing by adding rotational degrees of freedom to the platform. This dimensional change allows the print head to approach and deposit material on surfaces from various angles, eliminating the need for support structures that would be required in traditional single-direction printing.
2Reliability
If external support structures are added for complex models, then the models become printable, but the support structures increase material usage and require removal time
Solution Approach 1:
The rotatable platform with multiple rotational degrees of freedom enables the system to dynamically adjust printing orientations, allowing complex models to be printed without external support structures. The platform can rotate to position overhanging surfaces at angles suitable for direct printing, eliminating the need for support structures and subsequent removal time.
Solution Approach 2:
The patent changes the printing parameters by allowing the platform orientation to vary during the printing process. By rotating the platform to different angles and orientations, the system can print complex geometries that would otherwise require support structures, thereby eliminating both the material waste and time consumption associated with support removal.
3Loss of substance
If the platform is made rotatable with multi-DOF, then complex models can be printed without support structures, but the device complexity increases
Solution Approach 1:
The patent segments the printing system into independent functional modules: a rotatable platform with multiple rotational degrees of freedom, a print head with translational capabilities, and a visual inspection system with camera. This segmentation allows each component to perform its specific function while working together to achieve multi-directional printing without support structures.
Solution Approach 2:
The patent incorporates a visual inspection system with a camera that provides real-time feedback on the printing process and platform orientation. This feedback mechanism allows the system to monitor and adjust the platform rotation and print head positioning, ensuring accurate multi-directional printing while managing the complexity of the multi-axis mechanical system through automated control.
4Manufacturing precision
If visual surveillance is added for real-time platform rotation monitoring, then printing precision is improved, but device complexity increases
Solution Approach 1:
The visual inspection system with camera mounted on the print head provides real-time feedback on platform orientation and print head positioning. This feedback enables precise control of the multi-axis mechanical system, ensuring accurate platform rotation and positioning while managing the added complexity through automated visual monitoring and control.
Solution Approach 2:
The patent replaces purely mechanical positioning systems with a hybrid system that incorporates visual surveillance. The camera-based visual inspection system substitutes for complex mechanical encoders and sensors by using optical feedback to monitor and control platform orientation, thereby achieving high precision while managing system complexity through non-contact measurement.
Data Source
AI summary
A multi-degree-of-freedom (Multi-DOF) 3D printing device includes a printer mechanism, a rotatable platform, a visual inspection system, and a control system. The printing mechanism includes a print head. The printing mechanism and the rotatable platform are combined to have three degrees of freedom of translation, and the rotatable platform has two degrees of freedom of rotation. The visual inspection system includes a camera mounted to nearby the print head and the relative position of camera and print head remains constant. The control system is configured to implement the printing process. The model is decomposed into several components, each of which could be printed in a single direction. After one component is printed out, the platform is then rotated so that the cutting plane for the component will be printed is horizontal.