Dynamic Layer Adjustment for 3D Printing Surface Quality
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Solution Overview
Problem
Existing 3D printing technologies produce jaggy or step-like surfaces on slanted and curved areas due to the use of fixed layer height and width, necessitating manual post-processing to smooth out these surfaces, which is time-consuming and costly.
Innovation Solution
A method and apparatus that analyze the curvature and slope of 3D object segments to dynamically adjust the layer height and width of deposited material, using adjustments such as nozzle gap, movement speed, and extrusion temperature to create layers with varying characteristics, reducing the need for post-manufacturing processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fixed layer height and width are used in 3D printing, then the printing process is simple and fast, but the surface quality on slanted and curved areas becomes jaggy and stepped
Solution Approach 1:
The patent implements dynamic adjustment of layer height and width parameters during the printing process. The slicing software analyzes the curvature and slope of each segment and dynamically modifies layer characteristics accordingly, transitioning from static fixed parameters to dynamic adaptive parameters that respond to geometric complexity
Solution Approach 2:
The patent applies different layer height and width parameters to different segments of the 3D object based on local geometric characteristics. Flat areas use standard layer parameters while slanted and curved areas use adjusted parameters, creating local optimization of surface quality without affecting the entire object
2Manufacturing precision
If manual post-processing is applied to smooth jaggy surfaces, then surface quality improves, but time and cost increase
Solution Approach 1:
The patent performs surface smoothing actions during the printing process itself by dynamically adjusting layer parameters, rather than requiring separate post-processing operations. The slicing software pre-calculates and prepares the variable layer parameters before printing, embedding the smoothing function into the manufacturing process
Solution Approach 2:
The printing process automatically adjusts layer parameters to achieve smooth surfaces without requiring manual post-processing intervention. The system self-regulates the layer height and width based on geometric analysis, making the process self-sufficient and eliminating the need for additional smoothing operations
3Manufacturing precision
If variable layer height and width are used to achieve smooth surfaces, then surface quality improves, but device complexity and process complexity increase
Solution Approach 1:
The slicing software analyzes the 3D model geometry and provides feedback to adjust layer parameters accordingly. The system continuously monitors curvature and slope values and automatically modifies layer height and width parameters based on this geometric feedback, creating a closed-loop control system
Solution Approach 2:
The patent changes the physical parameters of the printing process (layer height, layer width, nozzle temperature, printing speed) based on geometric analysis. These parameter modifications enable adaptive control of material deposition to match the complexity of the surface geometry being printed
4Ease of operation
If standard slicing software is used, then the printing process is straightforward, but it cannot reproduce complex geometries with fine details faithfully
Solution Approach 1:
The patent divides the 3D object into multiple segments and analyzes each segment's geometric characteristics (curvature, slope, area) independently. This segmentation allows the software to apply appropriate layer parameters to each segment, preserving fine details in complex areas while maintaining efficiency in simple areas
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 enables the production of 3D objects with smooth surfaces, reducing the time and cost associated with post-processing and enhancing the external appearance of manufactured items by allowing for more faithful reproduction of complex geometries without the need for manual smoothing.
Implementation Method 1
The material from which the object is produced is a polymer that adheres to the previously deposited layer and is hardened or solidified by actinic radiation, such as ultraviolet radiation
Implementation Method 2
extrusion is a process, where the material from which the 3D object is manufactured is extruded through a nozzle from a solid filament or from liquid material
Data Source
AI summary
Described is an apparatus and method for the additive manufacturing of 3D objects. The apparatus includes a 3D object material deposition module configured to deposit a portion of material forming at least a layer of a 3D object, a 3D object material solidifying module configured to solidify at least the portion of material forming at least a layer of the 3D object and a control computer. The control computer includes a module configured to analyze the slope or curvature change ratio and operate material deposition module to deposit the 3D object material across the cross-section of the 3D object with at least one of a plurality of layers forming the 3D object that has different from other layers characteristics.