930results about "Additive manufacturing processes" patented technology

A process and apparatus are provided for manufacturing complex parts and devices which utilize a CAD environment to design a part or device to be created (FIG. 1); Boolean, scaling, smoothing, mirroring, or other operations to modify the CAD design; a software interface to convert the CAD designed part (Data Process System) or device into a heterogeneous material and multi-part assembly model (Design Input Model) which can be used for multi-nozzle printing; and a multi-nozzle system to print the designed part or device using different, specialized nozzles (Tissue substitutes).

The instant invention relates to a device and method for manufacturing patterns in layers. The device includes an auxiliary frame, a vertically displaceable build platform, a dispensing device for applying a binder material onto the build platform, a mounting platform, a mounting platform, and a spreader device for applying particulate material. The mounting platform preferably is connected to the auxiliary frame and includes a cut-out for the build platform. The dispensing device, the spreader device, and the build platform are connected to the mounting platform, so that the dispensing device, the spreader device and the build platform are cable of being mounted, adjusted, and wired to the mounting platform while located outside the auxiliary frame.

A component is provided that includes at least one passageway. In another aspect, a component, such as a lamp or a vehicular washer jet, is made of layers of material, a light curable material and / or multiple built-up materials. Another aspect uses a three-dimensional printing machine to emit material from an ink jet printing head to build up a component.

Embodiments of the invention are directed to a method of producing three-dimensional prototype molds for use in investment casting. The method includes dispensing modeling material and support material in a predetermined arrangement, in layers, to produce a three-dimensional mold having an outer shell. Generally, the out shell includes modeling material and the interior of the mold includes support material. Then the mold is cured.

The invention relates to a structured porous metamaterial. The structured porous metamaterial comprises a three-dimensional matrix of at least one repeating base unit, wherein the matrix is formed from an array of at least eight base units, each base unit comprises a platonic solid including at least one shaped void, each base unit has void geometry tailored to provide a porosity of between 0.3 and 0.97; or provide the metamaterial with a response comprising at least one of a Poisson's ratio of 0 to -0.5 when under tension and compression; or negative linear compression (NLC), negative area compression (NAC), zero linear compression (ZLC), or zero area compression (ZAC) behaviour when under pressure.

The invention discloses a three-dimensional negative Poisson ratio periodic porous material and a preparation method thereof. The material is formed by splicing two rotating modules in an alternate mode; the projection shapes in the horizontal X direction and the horizontal Y direction are the same, and the projection in the vertical direction is an orthogonal square grid; when the material is subjected to stress, an inward contraction effect is produced; and when the material is subjected to pulling force, an expansion property is produced. The preparation method uses the 3D printing technology to achieve the three-dimensional negative Poisson ratio property. According to the three-dimensional negative Poisson ratio periodic porous material, the negative Poisson ratio property of a three-dimensional space is achieved; when pulled in the vertical direction, the material is expanded in the two horizontal directions; when the material is pressed in the vertical direction, the inward contraction property is produced in the two horizontal directions; and during expansion and contraction of the material, both modules in the material rotate in the direction of the concave surfaces around angular points. The negative Poisson ratio material further has good effects of energy dissipation and sound absorption and can be used for energy dissipation materials in the military field and sound insulation materials in daily life.