Integrated measuring and additive manufacturing system and method

Patent metadata

Field	Value
Publication number	US-2017165921-A1
Application number	US-201715427481-A
Country	US
Kind code	A1
Filing date	Feb 8, 2017
Priority date	Dec 20, 2013
Publication date	Jun 15, 2017
Grant date	—

Abstract

A method of producing a three-dimensional object from an extrusion of material forms uses a movable portion of an additive extrusion printing device to form at least one line of material (“line of material”). The printing device preferably extrudes the material as a function of a nominal model having a specification of the object. The method also measures, using a coordinate measuring machine, at least one dimension of the line of material after starting to extrude the line of material. During or after measuring, the method checks, using a checker operatively coupled with the coordinate measuring machine, the dimensional accuracy of at least one dimension of the line of material by comparing the at least one dimension with at least one specification of the nominal model of the object.

First claim

What is claimed is:

1 . A method of producing a three-dimensional object from an extrusion of material, the method comprising:
forming, using an additive extrusion printing device having a movable portion, at least one line of material (“line of material”) from the movable portion of the additive extrusion printing device, extruding being a function of a nominal model having a specification of the object; measuring, using a coordinate measuring machine, at least one dimension of the line of material after starting to extrude the line of material; checking, using a checker operatively coupled with the coordinate measuring machine, the dimensional accuracy of at least one dimension of the line of material by comparing the at least one dimension with at least one object specification of the nominal model of the object; and altering subsequent extrusion of the line of material by the movable portion of the additive extrusion printing device as a function of the dimensional accuracy of said checking the at least one measured dimension, altering comprising controlling the additive extrusion printing device to change an extrusion parameter of the line of material, the extrusion parameter including at least one of the trajectory of the movable portion, the velocity of the movable portion, the velocity the material extrudes from the movable portion, and at least one dimension of the line of material.

2 . The method as defined by claim 1 wherein the coordinate measuring machine includes a measurement modality comprising at least one of a structured white light, a fiber optic probe, a laser scanner, and/or an analog scanner.

3 . The method as defined by claim 1 wherein the additive extrusion printing device comprises a 3D printer.

4 . The method as defined by claim 1 wherein said altering comprises altering subsequent extrusion of the line of material when said at least one measured dimension produces an error exceeding a prescribed threshold.

5 . The method as defined by claim 1 wherein the object comprises a plurality of vertices and a plurality of lines connecting those vertices.

6 . The method as defined by claim 1 wherein the coordinate measuring machine includes a measurement modality that measures the object, the measurement modality being functionally independent of the additive extrusion printing device.

7 . The method as defined by claim 6 wherein the coordinate measuring machine and measurement modality share a base.

8 . The method as defined by claim 1 wherein the additive extrusion printing device is configured to extrude the line of material on another line of material formed by an earlier extrusion.

9 . The method as defined by claim 1 wherein the line of material is not straight.

10 . The method as defined by claim 1 wherein the line of material comprises an extrudate output of a material forced through an extrusion die in the additive extrusion printing process.

11 . The method as defined by claim 1 further comprising:
updating the specification of the nominal model to include the changed extrusion parameter of the line of material; and
producing a plurality of additional objects using the updated specification.

12 . A system for producing a three-dimensional object from an extrusion of material, the system comprising:
an additive extrusion printing device having a movable portion configured to form at least one line of material (“line of material”), the additive extrusion printing device being configured to extrude as a function of a nominal model having a specification of the object; a coordinate measuring machine configured to measure at least one dimension of the line of material after the additive extrusion printing device starts to extrude the line of material; a checker operatively coupled with the coordinate measuring machine, the checker being configured to check the dimensional accuracy of at least one dimension of the line of material by comparing the at least one dimension with at least one object specification of the nominal model of the object; and the checker being configured to alter subsequent extrusion of the line of material by the movable portion of the additive extrusion printing device as a function of the dimensional accuracy of the at least one measured dimension of the line; the checker being configured to alter subsequent extrusion of the line by controlling the additive extrusion printing device to change an extrusion parameter of the line of material, the extrusion parameter including at least one of the trajectory of the movable portion, the velocity of the movable portion, the velocity the material extrudes from the movable portion, and at least one dimension of the line of material.

13 . The system as defined by claim 12 wherein the coordinate measuring machine includes a measurement modality comprising at least one of a structured white light, a fiber optic probe, a laser scanner, and/or an analog scanner.

14 . The system as defined by claim 12 wherein the additive extrusion printing device comprises a 3D printer.

15 . The system as defined by claim 12 wherein the checker is configured to alter subsequent extrusion of the line of material when the at least one measured dimension produces an error exceeding a prescribed threshold.

16 . The system as defined by claim 12 wherein the object comprises a plurality of vertices and a plurality of lines connecting those vertices.

17 . The system as defined by claim 12 wherein the coordinate measuring machine includes a measurement modality that measures the object, the measurement modality being functionally independent of the additive extrusion printing device.

18 . The system as defined by claim 12 further comprising a base that is accessible to both the additive extrusion printing device and the coordinate measuring machine.

19 . The system as defined by claim 12 wherein the line of material is not straight.

20 . The system as defined by claim 12 wherein the line of material comprises an extrudate output of a material forced through an extrusion die in the additive extrusion printing process.

21 . A computer program product for use on a computer system for producing a three-dimensional object from an extrusion of material, the computer program product comprising a tangible, non-transient computer usable medium having computer readable program code thereon, the computer readable program code comprising:
program code for forming, using an additive extrusion printing device having a movable portion, at least one line of material (“line of material”) from the movable portion of the additive extrusion printing device, extruding being a function of a nominal model having a specification of the object; program code for measuring, using a coordinate measuring machine, at least one dimension of the line of material after starting to extrude the line of material; program code for checking, using a checker operatively coupled with the coordinate measuring machine, the dimensional accuracy of at least one dimension of the line of material by comparing the at least one dimension with at least one object specification of the nominal model of the object; and program code for altering subsequent extrusion of the line of material by the movable portion of the additive extrusion printing device as a function of the dimensional accuracy of the at least one measured dimension; the program code for altering further comprising controlling the additive extrusion printing de

Assignees

• Hexagon Metrology Inc

Inventors

• Fetter William
• Creuzer Michael

Classifications

• B29L2031/772

  Articles characterised by their shape and not otherwise provided for (closed loop B29L2031/709; ring-like B29L2031/7096; corrugated B29L2016/00, flat B29L2007/00; hollow B29L2022/00; screw-threaded B29L2001/00; toothed B29L2031/775; corrugated tubes B29L2023/18) · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• B29C64/393

  for controlling or regulating additive manufacturing processes · CPC title

• B33Y50/02 Primary

  for controlling or regulating additive manufacturing processes · CPC title