Systems and methods for adjusting a three-dimensional (3D) model during additive manufacturing

A method for maintaining dimensional accuracy of a fabricated three-dimensional (3D) part by adjusting a 3D model used in metal additive manufacturing, comprising:

• receiving, using a processor, a selection for fabricating a desired 3D part;
• receiving a 3D model of the desired 3D part;
• receiving an input of at least one process variable parameter from a set of process variable parameters;
• retrieving at least one model and at least one associated model constant based on the selection;
• generating transformation factors based on the at least one process variable parameter and the at least one model constant;
• transforming the 3D model of the desired 3D part based on the transformation factors wherein the transformation includes at least one of an offsetting operation, a rotation operation and a stretching operation;
• and
• generating processing instructions for fabricating the transformed 3D model of the desired 3D part;
• and
• additively manufacturing the desired 3D part via binder jetting additive manufacturing.

A system for adjusting a three-dimensional (3D) model used in metal additive manufacturing, comprising:

• a processor configured to:
• receive, using a processor, a selection for fabricating a desired 3D part;
• receive a 3D model of the desired 3D part;
• retrieve at least one model constant based on the selection;
• receive an input of at least one process variable parameter from a set of process variable parameters, wherein the at least one process variable parameter includes an offset based on a level of binder saturation to accommodate for binder bleeding;
• generate transformation factors based on the at least one process variable parameter and the at least one model constant;
• transform the 3D model of the desired 3D part based on the transformation factors;
• and
• generate processing instructions for fabricating the transformed 3D model of the desired 3D part, wherein the 3D part is to be manufactured via binder jetting additive manufacturing.

A non-transitory computer-readable medium storing instructions, the instructions, when executed by a computer system, cause the computer system to perform a method, the method comprising:

• receiving, using a processor, a selection for fabricating a desired 3D part;
• receiving a 3D model of the desired 3D part;
• retrieving at least one model constant based on the selection;
• receiving an input of at least one process variable parameter from a set of process variable parameters, wherein the at least one process variable parameter includes an offset based on a level of binder saturation to accommodate for binder bleeding;
• generating transformation factors based on the at least one process variable parameter and the at least one model constant;
• transforming the 3D model of the desired 3D part based on the transformation factors;
• and
• generating processing instructions for fabricating the transformed 3D model of the desired 3D part, wherein the 3D part is to be manufactured via binder jetting additive manufacturing.