PARTICLE BEAM ASSISTED FUSED DEPOSITION MODELING
Methods and systems for electron beam assisted fused deposition modeling can include a particle accelerator configured to generate a particle beam, a shield cone and a magnet configured to direct the particle beam in the shield cone forming a beam extraction assembly configured to direct the terminal position of the particle beam on filament deposited by an additive manufacturing system, and a control system for controlling the beam spot location of the particle beam on the filament, such that the particle accelerator delivers a dose of irradiation along the build path according to the assigned irradiation value with the particle beam.
1 . A system comprising:
a particle source configured to generate a particle beam;
a beam extraction assembly, the beam extraction assembly configured to direct a terminal position of the particle beam on a material deposited by a nozzle; and
a control system for controlling a beam spot location of the particle beam.
2 . The system of claim 1 wherein the particle source further comprises:
a particle accelerator.
3 . The system of claim 2 wherein the particle accelerator comprises:
an electron beam accelerator.
4 . The system of claim 1 wherein the particle beam comprises:
an electron beam.
5 . The system of claim 1 wherein the beam extraction assembly comprises:
a shield cone; and
a magnet configured to direct the particle beam in the shield cone.
6 . The system of claim 5 wherein the shield cone further comprises:
an inner cone;
an outer cone; and
a cutaway in the shield cone configured to accept the nozzle.
7 . The system of claim 5 further comprising:
a magnet configured in the shield cone to adjust an angle of the particle beam as it exits the shield cone.
8 . The system of claim 5 further comprising:
a sensor array configured along the shield cone.
9 . The system of claim 8 further comprising:
a mechanically rotating assembly for the magnet that rotates about a vertical axis of the beam extraction assembly, bending the particle beam.
10 . The system of claim 1 wherein the nozzle comprises an extrusion nozzle associated with an additive manufacturing system.
11 . The system of claim 10 , wherein the beam spot location of the particle beam is directed on a filament deposited by the extrusion nozzle.
12 . A fabrication method comprising:
defining a desired build structure;
translating the desired build structure into a build path;
assigning an irradiation value along the build path sufficient to cure a build material; and
delivering a dose of irradiation along the build path according to the assigned irradiation value with a particle beam.
13 . The method of claim 12 wherein delivering the dose of irradiation comprises:
generating the particle beam with a particle accelerator.
14 . The method of claim 13 further comprising:
adjusting a beam angle of the particle beam according to the assigned irradiation value.
15 . The method of claim 13 wherein the particle accelerator comprises an electron beam accelerator.
16 . The method of claim 12 further comprising:
directing the particle beam along the build path, wherein the build path is defined by deposition of the build material.
17 . An apparatus comprising:
a particle accelerator configured to generate a particle beam;
a beam extraction assembly comprising a shield cone and a magnet configured to direct the particle beam in the shield cone, the beam extraction assembly configured to direct a terminal position of the particle beam on a material deposited by a nozzle; and
a control system for controlling a beam spot location of the particle beam.
18 . The apparatus of claim 17 wherein the shield cone further comprises:
an inner cone;
an outer cone; and
a cutaway in the shield cone configured to accept the nozzle.
19 . The apparatus of claim 17 wherein the control system is configured to:
assign an irradiation value along a build path sufficient to cure the material deposited by the nozzle; and
instruct the particle accelerator to deliver a dose of irradiation along the build path according to the assigned irradiation value with the particle beam.
20 . The apparatus of claim 18 further comprising:
a window configured between the outer cone and the inner cone.