Color-Coded 3D Model Compensation for Critical Print Regions
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Solution Overview
Problem
Additive manufacturing techniques, particularly powder-bed fusion methods like MJF and SLS, suffer from dimensional inaccuracies due to thermal process deviations, affecting critical object regions differently, and applying global compensations can compromise accuracy in other regions.
Innovation Solution
Specify region-specific dimensional compensations within object model data using color values, allowing existing file formats to indicate thermal behavior variations and apply compensations only to specific object regions, avoiding manual geometry modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual geometry modifications are made to achieve dimensional accuracy, then manufacturing precision is improved, but device complexity and ease of manufacture deteriorate
Solution Approach 1:
The patent performs preliminary action by embedding dimensional compensation information directly into the object model data before manufacturing. The color-coded region specifications and compensation parameters are prepared in advance during the modeling stage, allowing the additive manufacturing system to automatically apply the correct compensations without requiring manual geometry modifications or post-processing adjustments.
Solution Approach 2:
The patent replaces manual mechanical geometry modification with an automated digital compensation system. Instead of physically altering the object geometry through manual intervention, the system uses software-based dimensional compensation parameters embedded in the digital model, which are automatically applied during the additive manufacturing process, eliminating the need for manual adjustments.
Data Source
AI summary
An additive manufacturing apparatus includes a processor and a memory storing program code. The program code is executable by a processor to receive object model data representing a geometry of an object and specifying a color value for a region of the object. The object is to be physically generated via additive manufacturing. The program code is executable by the processor to determine a dimensional compensation corresponding to the color value specified for the region of the object. The program code is executable by the processor to generate instructions for physically generating the object, based on the geometry of the object and the dimensional compensation, and such that the dimensional compensation is applied to just the region of the object for which the color value has been specified. The program code is executable by the processor to execute the instructions to physically generate the object.