Additive Manufacturing Control via Deformation Difference Modeling
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Solution Overview
Problem
Existing processing systems face challenges in generating appropriate processing control information for additive manufacturing, especially when dealing with objects that have undergone deformation due to use, leading to inaccuracies in shaping the target form.
Innovation Solution
The method involves acquiring an object model indicating the three-dimensional shape of the object, generating a deformation model by deforming a reference model based on the object model, creating a difference model showing the target shape after processing, and using this difference model to generate processing control information for additive manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a reference model is used to generate processing control information without considering actual deformation, then the processing process is simple, but the manufacturing precision deteriorates because the target shape does not match the actual object
Solution Approach 1:
The patent performs preliminary actions by acquiring the actual three-dimensional shape of the object before generating processing control information. The deformation amount calculation unit calculates deformation amounts based on the actual shape and reference model in advance, and the target shape generation unit generates accurate target shapes considering this deformation. This preliminary analysis of the actual object state enables subsequent processing to achieve high shape accuracy without requiring complex real-time adjustments during manufacturing.
Solution Approach 2:
The patent introduces an intermediary deformation amount calculation unit that bridges the reference model and the actual object. This unit calculates deformation amounts by comparing the actual three-dimensional shape with the reference model, and uses these calculated deformation amounts as intermediate data to generate accurate target shapes. This intermediary step transforms the complex problem of direct reference model-to-actual-object mapping into a manageable two-step process, maintaining reasonable system complexity while achieving high manufacturing precision.
2Manufacturing precision
If the actual three-dimensional shape is acquired and deformation is calculated to generate accurate target shapes, then manufacturing precision improves, but the processing time and complexity increase
Solution Approach 1:
The patent performs preliminary acquisition of the actual three-dimensional shape and preliminary calculation of deformation amounts before the main processing control information generation. By completing these preparatory steps in advance, the actual processing phase can proceed more efficiently with pre-analyzed deformation data, reducing the time required during the critical manufacturing preparation phase while maintaining high target shape accuracy.
3Manufacturing precision
If deformation analysis is performed using reference models, then the processing method becomes more sophisticated, but the ease of operation deteriorates
Solution Approach 1:
The patent implements a self-service mechanism where the processing system automatically acquires the actual three-dimensional shape, automatically calculates deformation amounts by comparing with the reference model, and automatically generates accurate target shapes. This automation eliminates the need for manual deformation measurement and calculation by operators, making the sophisticated deformation analysis process transparent and easy to operate. The system performs complex analysis independently while presenting a simple operational interface.
Data Source
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AI summary
A processing control information generation method includes: acquiring an object model that indicates a three-dimensional shape of an object; generating a deformation model, which indicates a target shape of the object after a processing, by deforming a reference model of the object based on the object model; generating a difference model that indicates a difference between the deformation model and the object model; and generating, based on the difference model, processing control information for performing an additive manufacturing on the object so that the three-dimensional shape of the object becomes the target shape.