摘要:
A method of additive manufacturing include delivering at least one layer by either depositing a uniform layer of powder on a support and then removing a portion of the layer with a roller with a surface having spatially controlled electrostatic charge, or by depositing powder onto the surface of the roller and moving the roller relative to a support such that the spatially controllable electrostatic charge on the surface of the roller causes transfer of a corresponding portion of the powder from the roller onto the support or an underlying layer.
摘要:
An additive manufacturing system includes a platen having a top surface to support an object being manufactured, a dispenser to deliver a plurality of successive layers of feed material over the platen, an energy source positioned above the platen to direct a beam to fuse at least some of an outermost layer of feed material, and a plurality of lamps disposed above the platen and around the energy source to radiatively heat the outermost layer of feed material.
摘要:
An apparatus for surface modification includes a support to hold a workpiece, a plasma source to generate a plasma in a localized region that is smaller than the workpiece, and a six-axis robot to manipulate relative positioning of the workpiece and the plasma source. The six-axis robot is coupled to at least one of the support and the plasma source.
摘要:
Additive manufacturing includes successively forming a plurality of layers on a support. Depositing a layer from the plurality of layers includes dispensing first particles, selectively dispensing second particles in selected regions corresponding to a surface of the object, and fusing at least a portion of the layer. The layer has the first particles throughout and the second particles in the selected regions. Alternatively or in addition, forming the plurality of layers includes depositing multiple groups of layers. Depositing a group of layers includes, for each layer in the group of layers dispensing a feed material to provide the layer, and after dispensing the feed material and before dispensing a subsequent layer fusing a selected portion of the layer. After all layers in the group of layers are dispensed, a volume of the group of layers that extends through all the layers in the group of layers is fused.
摘要:
A semiconductor processing system includes a vacuum chamber, a gas source configured to supply a gas to the chamber, a platen having a top surface in the chamber to support a substrate, the platen including a conductive plate, a robot to transport the substrate onto and off of the platen, a first plurality of lamps disposed below the top surface of the platen to heat the platen, and an RF power source to generate a plasma in the chamber above the platen.
摘要:
An additive manufacturing system includes a platen having a top surface to support an object being manufactured, a feed material dispenser to deliver a plurality of successive layers of feed material over the platen, an energy source positioned above the platen to fuse at least a portion of an outermost layer of feed material, and a coolant fluid dispenser to deliver a coolant fluid onto the outermost layer of feed material after at least a portion of the outermost layer has been fused.
摘要:
An additive manufacturing system includes a platen, a dispenser apparatus configured to deliver a layer of powder onto the platen or a previously dispensed layer on the platen, a voltage source coupled to the platen and configured to apply a voltage to the platen to create an electrostatic attraction of the powder to the platen sufficient to compact the powder, and an energy source configured to apply sufficient energy to the powder to fuse the powder.
摘要:
A dispensing system for an additive manufacturing includes a powder source that contains powder to form an object, and an array of nozzles positioned at a base of the powder source over a top surface of a platen where the object is to be formed. The powder flows from the powder source through the nozzles to the top surface. A respective powder wheel in each nozzle controls a flow rate of the powder. Each wheel has multiple troughs on surface of the wheel. When a motor rotates the wheel, the troughs transport the powder through the nozzle. The rotation speed of the wheel controls the flow rate. For solid parts of the object, the wheel rotates and allows the powder to be deposited on the top surface. For empty parts of the object, the wheel remains stationary to prevent the powder from flowing to the surface.
摘要:
An additive manufacturing system includes a platen having a top surface to support an object being manufactured, a support that is movable along a vertical axis, an actuator to move the support along the vertical axis, a dispenser to deliver a plurality of successive layers of feed material over the platen, an energy source configured to fuse at least a portion of the feed material, and a controller. The dispenser and energy source are mounted on the support over the platen such that motion of the support along the vertical axis moves the dispenser and energy source together toward or away from the top surface of the platen. The controller is coupled to the actuator, dispenser and energy source and configured to cause the actuator to move the support to lift the dispenser and actuator away from the top surface after each of the plurality of successive layers is delivered.
摘要:
An additive manufacturing apparatus includes a platform, a dispenser to deliver a plurality of layers of feed material, one or more light sources configured to emit a first light beam and a second light beam, and a polygon beam scanner including a rotatable mirror having a plurality of reflective facets to redirect the first light beam and the second light beam toward the platform to deliver energy to an uppermost layer of feed material. The mirror is positioned and rotatable such that motion of each facet of the plurality of reflective facets causes the first light beam to sweep along a first path on the uppermost layer and causes the second light beam to sweep along the first path following the first light beam.