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1584 results about "Solid structure" patented technology

Powder feeder for material deposition systems

A method and apparatus for embedding features and controlling material composition in a three-dimensional structure (130) is disclosed. The invention enables the control of material characteristics, within a structure (130) made from a plurality of materials, directly from computer renderings of solid models of the components. The method uses stereolithography and solid model computer file formats to control a multi-axis head (480) in a directed material deposition process (123). Material feedstock (126, 127) is deposited onto a pre-heated substrate (19). Depositions (15) in a layer-by-layer pattern, defined by solid models (141, 146), create a three-dimensional article having complex geometric details. Thermal management of finished solid articles (250-302), not available through conventional processing techniques, is enabled by embedded voids (152) and/or composite materials (126, 127), which include dissimilar metals (210, 216). Finished articles control pressure drop and produce uniform coolant flow and pressure characteristics. High-efficiency heat transfer is engineered within a solid structure by incorporating other solid materials with diverse indexes. Embedding multi-material structures (132, 134) within a normally solid component (141) produces articles with diverse mechanical properties. Laser and powder delivery systems (420, 170) are integrated in a multi-axis deposition head (480) having a focused particle beam (502) to reduce material waste.
Owner:OPTOMEC DESIGN CO

Three-dimensional space structure modeling and key block identifying method of engineering rock mass

The invention relates to a three-dimensional space structure modeling and key block identifying method of engineering rock mass, belonging to the fields of modeling and analysis of the entity structure of the rock mass engineering such as geotechnical engineering, mine exploitation, engineering construction, hydraulic engineering, underground structure and the like. The method of the invention comprises the following steps: (1) acquiring the structure original data of the engineering rock mass in the field; (2) processing and extracting the original data of the engineering rock mass; (3) constructing the model of the engineering rock mass; and (4) identifying blocks. The invention has the advantages as follows: the method realizes the purposes of quickly searching the structure of the engineering rock mass and identifying the key blocks, considers the requirement for quickly identifying a new structural surface in the engineering implementation process, and can be used for automatically searching the key blocks and counting the amount of movable blocks.
Owner:NORTHEASTERN UNIV

3D-printing-based machining method of three-dimensional micro-fluidic chip and printing device

The invention discloses a 3D-printing-based machining method of a three-dimensional micro-fluidic chip. The machining method comprises the following steps: (1) drawing a three-dimensional micro-runner figure; (2) layering three-dimensional runners in the three-dimensional micro-runner figure, and carrying out layer-by-layer slicing on the three-dimensional runners along the bottom surface direction parallel to a chip; (3) pouring a liquid-state chip material on a micro-runner solid structure at a previous layer, sequentially printing the micro-runner solid structure and pouring the chip material on each layer according to layering and slicing sequences of the runners, and sequentially finishing the shape printing of the runners, so as to obtain a three-dimensional runner solid structure; (4) dissolving the three-dimensional runner solid structure, so as to obtain the three-dimensional micro-fluidic chip. The invention further discloses a printing device for implementing the method. The 3D-printing-based machining method has the advantages that a machining process is simple, convenient and rapid, the production efficiency is high, the industrial mass production is easily realized, the obtained three-dimensional micro-fluidic chip does not need to be subjected to post-processing processes such as bonding, a packaging process is simplified, a three-dimensional micro-runner with a complex structure can be manufactured, and the shape and precision of the runner are controllable.
Owner:ZHEJIANG UNIV
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