Adjustable Platform Assembly for 3D Printing Deviation Compensation
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Solution Overview
Problem
Digital manufacturing systems face challenges in maintaining uniformity of the deposition head's distance from the platform due to manufacturing limitations, leading to variations in layer thickness and fine-feature resolution, especially as the platform size increases, which current corrective measures like reorienting the platform or depositing base layers are inefficient and costly.
Innovation Solution
A platform assembly with a deformable platen and adjustable supports that compensates for vertical deviations of the deposition head's motion profile, ensuring a consistent distance between the deposition head and the platform across its operational range, using motor-operated screw gears and flexible materials to adjust the platform surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the platform size is increased to produce large 3D models, then the production capability is improved, but the manufacturing precision deteriorates due to non-planar surfaces and gantry motion deviations
Solution Approach 1:
The platform surface is made dynamically adjustable through multiple support mechanisms that can independently change the height of different platform regions. This allows the platform to adapt its surface profile to compensate for gantry motion deviations and maintain uniform deposition distance across large build volumes.
Solution Approach 2:
Different regions of the platform surface are independently adjustable through distributed support mechanisms. Each local region can be optimized for its specific position relative to the deposition head, allowing non-uniform adjustments that compensate for spatial variations in gantry motion accuracy across the large platform area.
2Manufacturing precision
If corrective measures such as reorienting the platform are taken to minimize height variations, then the deposition uniformity is improved, but the device complexity and operational constraints increase
Solution Approach 1:
The platform adjustment system is divided into multiple independent support mechanisms distributed across the platform surface. Each support can be adjusted independently, replacing the need for complex global platform reorientation while achieving the same compensation effect through localized adjustments.
Solution Approach 2:
The adjustable support mechanisms serve multiple functions: they provide structural support for the platform, enable height compensation for deposition uniformity, and allow adaptation to different build sizes. This multi-functionality reduces the need for separate corrective mechanisms.
3Manufacturing precision
If base layers are deposited prior to modeling material to mitigate non-planar profiles, then the deposition uniformity is improved, but the productivity decreases due to additional time and costs
Solution Approach 1:
The platform surface is pre-adjusted to the correct profile before deposition begins, eliminating the need for corrective base layers. This preliminary configuration of the support mechanisms ensures uniform deposition distance from the start of the build process.
Solution Approach 2:
The platform adjustment system automatically compensates for its own non-planarity issues, making external corrective measures like base layers unnecessary. The system self-corrects the deposition surface to maintain uniformity without requiring additional material deposition steps.
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 solution maintains the accuracy and quality of the 3D model deposition by ensuring a uniform distance between the deposition head and the platform, reducing variations in layer thickness and improving fine-feature resolution without the need for additional time or costs associated with reorienting the platform or depositing base layers.
Implementation Method 1
The adjustable supports may include motor-operated screw gears, which may allow for fine adjustment of the height of the supports
Implementation Method 2
The flexible platform may be formed from a flexible material such as aluminum, steel, polymer, or other flexible material
Data Source
AI summary
A platform assembly for use in a digital manufacturing system, where the platform assembly comprises a deformable platform having a surface configured to operably receive a deposited material from a deposition head, and at least one mechanism configured to adjust at least a portion of the first surface to compensate for at least one vertical deviation from at least one horizontal axis that the deposition head is directed to move in.