Desktop Metal. has been granted a patent for a method that enhances dimensional accuracy in metal additive manufacturing. The process involves adjusting a 3D model based on user selections and powder properties, generating transformation factors, and producing processing instructions to mitigate geometric distortions in the final part. GlobalData’s report on Desktop Metal gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Desktop Metal, Additive manufacturing monitoring sensors was a key innovation area identified from patents. Desktop Metal's grant share as of June 2024 was 39%. Grant share is based on the ratio of number of grants to total number of patents.
Method for adjusting 3d models in metal additive manufacturing
The patent US12042998B2 outlines a method and system designed to enhance the dimensional accuracy of three-dimensional (3D) parts produced through metal additive manufacturing, specifically utilizing binder jetting techniques. The process begins with the selection and receipt of a 3D model of the desired part, along with input regarding at least one property of the powder used in the manufacturing process. The method involves retrieving a shrinkage model and associated constants based on the powder properties, which may include factors such as apparent density, tap density, or powder size distribution. Transformation factors are then generated, allowing for the adjustment of the 3D model through operations like offsetting, stretching, or rotation, ultimately leading to the creation of processing instructions for the fabrication of the modified model.
Additionally, the claims detail that the transformation factors can include scaling factors and constant offsets to adjust the model dimensions accurately. The method emphasizes the importance of various powder properties, including rheology measurements and flowability characteristics, which are critical for ensuring the quality of the final product. The system is designed to facilitate repeated adjustments and refinements, allowing for continuous improvement in the fabrication process. By integrating these steps, the patent aims to address challenges in maintaining dimensional accuracy in metal additive manufacturing, thereby enhancing the reliability and performance of the produced parts.
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