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US 11,766,831 B2Granted
Calibration for additive manufacturing
AssigneeInkbit, LLC
InventorsWojciech Matusik, Desai Chen, Javier Ramos, Aaron Weber, Harrison Wang
Life of this patent
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Abstract
An additive fabrication approach involves fabricating a platform on a build plate. The fabrication system is then calibrated based on the fabricated platform, and an object is then fabricating on the fabricated platform according to the calibration.
Claims15
A method for calibration of an additive fabrication system, comprising:
- fabricating a fabrication platform (234) on a first build plate (220) by the additive fabrication system, wherein a top surface of the first build plate is nonparallel to a motion plane of a motion system for controllably moving the first build plate, a top surface of the fabrication platform (234) being substantially parallel to the motion plane of the motion system;
- calibrating the additive fabrication system including determining first geometric relationships between a printhead (112), a sensing system (118), and the motion system;
- and
- fabricating an object (250) on the fabrication platform (234) according to the determined first geometric relationships;
- wherein calibrating the additive fabrication system includes fabricating a plurality of markers (236, 237) on the fabrication platform (234), the plurality of markers positioned on the top surface of the fabrication platform parallel to the motion plane of the motion system, and wherein determining the first geometric relationships includes sensing said markers using the sensing system.
2 more elements
An additive fabrication system comprising:
- a printhead (112);
- a sensing system (118);
- a motion system for controllably moving a first build plate relative to the printhead;
- and
- a controller configured to cause:
- fabrication of a fabrication platform (234) on a first build plate (220), wherein a top surface of the first build plate is nonparallel to a motion plane of a motion system for controllably moving the first build plate, a top surface of the fabrication platform (234) being substantially parallel to the motion plane of the motion system;
- calibration of the additive fabrication system including determining geometric relationships between a printhead (112), a sensing system (118), and the motion system, the calibration being based at least in part on sensing of a plurality of markers fabricated on the fabrication platform (234) fabricated on the first build plate (220);
- wherein calibration of the additive fabrication system includes fabricating the plurality of markers (236, 237) on the fabrication platform (234), the plurality of markers positioned on the top surface of the fabrication platform parallel to the motion plane of the motion system, and wherein determining the first geometric relationships includes sensing said markers using the sensing system;
- and
- fabrication of an object (250) on the fabrication platform (234) according to the determined geometric relationships.
7 more elements
Dependencies are inferred from the claim text.