Statistical predictive modeling and compensation of geometric deviations of 3D printed products

Patent metadata

Field	Value
Publication number	US-9827717-B2
Application number	US-201514827956-A
Country	US
Kind code	B2
Filing date	Aug 17, 2015
Priority date	Aug 15, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A non-transitory, tangible, computer-readable storage media may contain a program of instructions that causes a computer system having a processor running the program of instructions to: receive design information indicative of the design of a three-dimensional object to be printed by a three-dimensional printer; receive test product deformation information indicative of deformation in the profiles of no more than five, three-dimensional test products that have a circular or polygonal cross section that were made by the three-dimensional printer; generate polygon product deformation information indicative of a predicted deformation of a polygon shape that the three-dimensional printer will print and that has a number of sides and a number of sizes that are both different from each of the number of sides and number of sizes that the no more than five, three-dimensional test products have; and generate adjustment information indicative of an adjustment needed to print a desired profile of the polygon shape that the three-dimensional printer will print to make the printed shape accurate.

First claim

The invention claimed is:

1. A non-transitory, tangible, computer-readable storage media containing a program of instructions that causes a computer system having a processor running the program of instructions to:
receive design information indicative of the design of a three-dimensional object to be printed by a three-dimensional printer;
receive test product deformation information indicative of deformation in the profiles of no more than five, three-dimensional test products that have a circular or polygonal cross section that were made by the three-dimensional printer;
generate polygon product deformation information indicative of a predicted deformation of a polygon shape that the three-dimensional printer will print and that has a number of sides and a number of sizes that are both different from each of the number of sides and number of sizes that the no more than five, three-dimensional test products have; and
generate adjustment information indicative of an adjustment needed to print a desired profile of the polygon shape that the three-dimensional printer will print to make the printed shape accurate; and cause the three-dimensional printer to print the desired profile of the polygon shape with the needed adjustment.

2. The storage media of claim 1 wherein the product deformation information is predictive of the deformation in the profiles of the no more than five, three-dimensional test products and is not measured.

3. The storage media of claim 2 wherein the prediction about the product deformation has an uncertainty and wherein the program of instructions causes the computer system to quantify that uncertainty from the test product deformation information.

4. The storage media of claim 1 wherein the wherein the program of instructions causes the computer system to generate the polygon product deformation information by utilizing a mathematical function that defines a relationship between a circle and a polygon.

5. The storage media of claim 4 wherein the mathematical function includes a square wave or sawtooth functional term.

6. The storage media of claim 4 wherein the mathematical function is learned from the test product deformation information.

7. The storage media of claim 1 wherein the program of instructions causes the computer system to optimize the adjustment needed to print the desired profile of the polygon shape by minimizing the predicted deformation of the polygon shape.

Assignees

• Huang Qiang
• Dasgupta Tirthankar
• Sosina Sobambo
• Univ Southern California
• Harvard College

Inventors

• Huang Qiang
• Dasgupta Tirthankar
• Sosina Sobambo

Classifications

• B29C64/129

  characterised by the energy source therefor, e.g. by global irradiation combined with a mask · CPC title

• B29C64/386 Primary

  Data acquisition or data processing for additive manufacturing · CPC title

• B29C67/007

  Operations & Transport · mapped topic

• B29C67/0088 Primary

  Operations & Transport · mapped topic