Abstract: A device for depositing a layer of granular material on a deposition surface. The device includes a discharge hopper, a scraper, and a transporter to move the discharge hopper and the scraper relative to the deposition surface. The hopper includes a plurality of discharge holes, aligned in a transverse direction, a top portion and a conical bottom discharge portion. The bottom discharge portion includes two transverse walls that are inclined towards the discharge holes. Each compartment, of a transverse compartmentalization of the discharge portion, includes two walls perpendicular to the transverse walls of the conical bottom discharge portion and inclined towards the discharge holes. Each compartment facing a discharge hole forms a pyramid-shaped conduit in the bottom discharge portion. The consecutive walls of the two compartments being joined at a corner where they meet in the bottom discharge portion.

Abstract: A method for manufacturing a structure from a granular material, called sand, in particular a mold. A layer of sand is deposited. The layer of sand is selectively agglomerated by spraying, using a spray nozzle, an inorganic binder having an M2SiO3 type (meta)silicate dissolved in a solvent. Prior to the spraying, the inorganic binder is heated to a temperature to confer on it a viscosity less than 0.2 Pa·s. A device for implementing the method is provided.

Abstract: A method for manufacturing a structure from a granular material, called sand, in particular a mold. A layer of sand is deposited. The layer of sand is selectively agglomerated by spraying, using a spray nozzle, an inorganic binder having an M2SiO3 type (meta)silicate dissolved in a solvent. Prior to the spraying, the inorganic binder is heated to a temperature to confer on it a viscosity less than 0.2 Pa·s. A device for implementing the method is provided.

Abstract: A device for depositing a layer of granular material on a deposition surface. The device includes a discharge hopper, a scraper, and a transporter to move the discharge hopper and the scraper relative to the deposition surface. The hopper includes a plurality of discharge holes, aligned in a transverse direction, a top portion and a conical bottom discharge portion. The bottom discharge portion includes two transverse walls that are inclined towards the discharge holes. Each compartment, of a transverse compartmentalization of the discharge portion, includes two walls perpendicular to the transverse walls of the conical bottom discharge portion and inclined towards the discharge holes. Each compartment facing a discharge hole forms a pyramid-shaped conduit in the bottom discharge portion. The consecutive walls of the two compartments being joined at a corner where they meet in the bottom discharge portion.

Abstract: A robot to manufacture a part by additive manufacturing using volume elements or voxels. The robot includes a base and a rotary arm having a plurality of effectors for additive manufacturing radially distributed on the arm. A guiding shaft to translationally move the rotary arm by rotation, in a direction parallel to its axis of rotation, and to translationally and rotationally guide the rotary arm relative to the base. A controller to control the action of the effectors for additive manufacturing as a function of the position of the rotary arm in space. A method for implementing the robot is provided.

Abstract: A machining method and apparatus for machining a part comprises a machining head and motorized axes comprising a rotary axis for displacing the machining head in a working space. Apparatus comprises a mechanism for positioning a part and holding it in position the working space. The machining head comprises a support for supporting a material shaping tool and a supply device for supplying material.

Abstract: A machining method and apparatus for machining a part comprises a machining head and motorized axes comprising a rotary axis for displacing the machining head in a working space. Apparatus comprises a mechanism for positioning a part and holding it in position the working space. The machining head comprises a support for supporting a material shaping tool and a supply device for supplying material.