3D Printing Layer Speed Adjustment for Cooling Constraints
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Solution Overview
Problem
The existing 3D printing processes face challenges in achieving optimal print speed due to variability in minimum cooling time per layer, which can lead to inefficiencies and errors in part production, especially when dealing with varying geometry and environmental factors, and require manual operator intervention to adjust speeds, which is time-consuming and prone to errors.
Innovation Solution
A method is implemented in a 3D printing machine controller to dynamically adjust layer print speeds based on calculated minimum cooling time per layer, allowing for zone-specific adjustments and automatic optimization of print speeds to match the required cooling time, ensuring consistent layer bonding without altering start-stop or index motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the print speed is increased to improve productivity, then the production time is reduced, but the layer bonding quality deteriorates due to insufficient cooling time
Solution Approach 1:
The patent implements dynamic adjustment of print speed based on real-time monitoring of layer cooling time. The system continuously adapts the print speed parameter during the printing process to maintain optimal layer bonding conditions, transitioning from a static fixed speed approach to a dynamic adaptive approach that responds to actual thermal conditions of each layer.
Solution Approach 2:
The system incorporates feedback mechanisms by monitoring the cooling time of each printed layer and using this information to adjust subsequent print speed parameters. This closed-loop control ensures that the print speed is continuously optimized based on actual thermal conditions, preventing defects while maintaining high productivity.
2Reliability
If the print speed is manually adjusted by operator intervention to maintain layer bonding quality, then the bonding reliability is improved, but the operation complexity and time consumption increase
Solution Approach 1:
The system implements self-service by automatically monitoring layer cooling times and adjusting print speed parameters without requiring operator intervention. The additive manufacturing system autonomously manages its own process parameters, using embedded sensors and control algorithms to maintain optimal bonding conditions throughout the printing process.
Solution Approach 2:
The patent replaces manual operator adjustments with an automated electronic control system that uses sensors and algorithms to monitor and adjust print speed. This substitution of mechanical/manual operations with electronic automation eliminates the need for constant operator attention while maintaining bonding quality.
3Device complexity
If a fixed print speed is used throughout the printing process, then the device complexity is reduced, but the manufacturing precision deteriorates due to varying cooling requirements across different layers
Solution Approach 1:
The system applies local quality by implementing zone-specific print speed adjustments based on the unique thermal characteristics of different layers and regions of the part. Each layer or zone can have its own optimized print speed parameter, allowing the system to account for variations in geometry, material deposition, and cooling requirements at different locations within the printed part.
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 continuous and error-free printing by optimizing print speeds for each layer, reducing production time and maintaining quality, even with changing environmental conditions and part geometry, without requiring constant operator attention.
Implementation Method 1
comprises melting a thin layer of thermoplastic material, and applying this material in layers to produce a final part
Implementation Method 2
The compression roller may be smooth and/or solid. The flattening process may aid in fusing a new layer of the flowable material to the previously deposited layer
Implementation Method 3
an oscillating plate may be used to flatten the bead of flowable material to a desired thickness; thus, effecting fusion to the previously deposited layer of flowable material
Data Source
AI summary
A method for adjusting print speed during an additive manufacturing process may include receiving at an additive manufacturing machine, information including at least a current layer print speed. The method may further include determining a current layer print time based on at least the current layer print speed and adjusting the current layer print speed to an adjusted current layer print speed based on at least the current layer print time and a minimum layer cooling time. Further, the method may include printing a layer of a part at the adjusted current layer print speed.