Systems and methods providing dynamic bead spacing and weave fill in additive manufacturing

Patent metadata

Field	Value
Publication number	US-11305366-B2
Application number	US-201916239602-A
Country	US
Kind code	B2
Filing date	Jan 4, 2019
Priority date	Jan 4, 2019
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

Embodiments of systems and methods of additive manufacturing are disclosed. In one embodiment, a computer control apparatus accesses multiple planned build patterns corresponding to multiple build layers of a three-dimensional (3D) part to be additively manufactured. A metal deposition apparatus deposits metal material to form at least a portion of a build layer of the 3D part. The metal material is deposited as a beaded weave pattern, based on a planned path of a planned build pattern, under control of the computer control apparatus. A weave width, a weave frequency, and a weave dwell of the beaded weave pattern are dynamically adjusted during deposition of the beaded weave pattern. The adjustments are under control of the computer control apparatus based on the planned build pattern, as a width of the build layer varies along a length dimension of the build layer.

First claim

What is claimed is:

1. An additive manufacturing system, the system comprising:
a computer control means configured to access multiple planned build patterns, stored as digital data, corresponding to multiple build layers of a three-dimensional (3D) part to be additively manufactured; and
a metal deposition apparatus configured to deposit metal material to form at least a portion of a build layer of the multiple build layers of the 3D part, wherein the metal deposition apparatus includes:
a deposition tool having a contact tip,
a wire feeder operatively connected to the deposition tool and configured to feed a consumable wire electrode of the metal material toward the 3D part through the deposition tool, and
a power source operatively connected to the wire feeder,
wherein the power source is configured to provide energy to melt at least the consumable wire electrode during deposition of a beaded weave pattern by forming an arc between the consumable wire electrode and the 3D part, and

wherein the metal material is deposited as the beaded weave pattern, in accordance with a planned path of a planned build pattern of the multiple planned build patterns, under control of the computer control means, where the planned build pattern corresponds to the build layer, and
wherein a weave width, a weave frequency, and a weave dwell of the beaded weave pattern are dynamically adjusted during deposition of the beaded weave pattern, under control of the computer control means in accordance with the planned build pattern, as a width of the build layer varies along a length dimension of the build layer, resulting in a dynamically varying bead width of the beaded weave pattern.

2. The system of claim 1 , wherein a travel speed in a travel direction along the length dimension of the build layer is dynamically adjusted during deposition of the beaded weave pattern, under control of the computer control means in accordance with the planned build pattern, as the width of the build layer varies along the length dimension of the build layer.

3. The system of claim 1 , further comprising a robot operatively connected to at least a portion of the metal deposition apparatus and configured to be controlled by the computer control means during the deposition of the beaded weave pattern to move at least the portion of the metal deposition apparatus relative to the 3D part being additively manufactured in accordance with the planned path of the planned build pattern.

4. The system of claim 1 , comprising a robot operatively connected to a base holding the 3D part being additively manufactured and configured to be controlled by the computer control means during the deposition of the beaded weave pattern to move the base relative to the metal deposition apparatus in accordance with the planned path of the planned build pattern.

5. The system of claim 1 , wherein a constant metal deposition rate of the metal material is maintained during the deposition of the beaded weave pattern under control of the computer control means.

6. The system of claim 1 , wherein a constant contact tip-to-work distance (CTWD) is maintained during the deposition of the beaded weave pattern under control of the computer control means.

7. The system of claim 1 , wherein a wave shape of the beaded weave pattern is one of a sinusoidal shape, a triangular shape, or a rectangular shape, in accordance with the planned path of the planned build pattern.

8. A method of filling a build layer of an additively manufactured part, the method comprising:
accessing a planned build pattern of multiple planned build patterns, stored as digital data, via a computer control means, wherein the multiple planned build patterns correspond to multiple build layers of a three- dimensional (3D) part being additively manufactured;
depositing a beaded weave pattern of metal material in a deposition travel direction along a length dimension of a build layer of the multiple build layers, via a metal deposition apparatus, under control of the computer control means in accordance with a planned path of the planned build pattern as a width of the build layer varies along the length dimension;
feeding a consumable wire electrode of the metal material toward the 3D part via a wire feeder of the metal deposition apparatus as part of the depositing;
providing energy to melt at least the consumable wire electrode, via a power source of the metal deposition apparatus operatively connected to the wire feeder, during the depositing of the beaded weave pattern by forming an arc between the consumable wire electrode and the 3D part; and
dynamically adjusting a weave width, a weave frequency, and a weave dwell of the beaded weave pattern, under control of the computer control means in accordance with the planned build pattern, as the width varies along the length dimension, resulting in a dynamically varying bead width of the beaded weave pattern.

9. The method of claim 8 , further comprising dynamically adjusting a travel speed in the deposition travel direction during the depositing, under control of the computer control means in accordance with the planned build pattern, as the width varies along the length dimension.

10. The method of claim 8 , further comprising controlling a robot, operatively connected to at least a portion of the metal deposition apparatus, via the computer control means during the depositing of the beaded weave pattern to move at least the portion of the metal deposition apparatus relative to the 3D part being additively manufactured in accordance with the planned path of the planned build pattern.

11. The method of claim 8 , further comprising controlling a robot, operatively connected to a base holding the 3D part being additively manufactured, via the computer control means during the deposition of the beaded weave pattern to move the base relative to the metal deposition apparatus in accordance with the planned path of the planned build pattern.

12. The method of claim 8 , wherein a wave shape of the beaded weave pattern is one of a sinusoidal shape, a triangular shape, or a rectangular shape, in accordance with the planned build pattern.

13. An additive manufacturing system, the system comprising:
a computer control means configured to access multiple planned build patterns, stored as digital data, corresponding to multiple build layers of a three- dimensional (3D) part to be additively manufactured; and
a metal deposition apparatus configured to deposit metal material to form at least a portion of a build layer of the multiple build layers of the 3D part, wherein the metal deposition apparatus includes:
a wire feeder configured to feed a filler wire of the metal material toward the 3D part,
a power source, and
a laser operatively connected to the power source,
wherein the power source and the laser are configured to provide energy in the form of a laser beam to melt at least the filler wire during deposition of a beaded weave pattern,

wherein the metal material is deposited as the beaded weave pattern, in accordance with a planned path of a planned build pattern of the multiple planned build patterns, under control of the computer control means, where the planned build pattern corresponds to the build layer, and
wherein a weave width, a weave frequency, and a weave dwell of the beaded weave pattern are dynamically adjusted during deposition of the beaded weave pattern, under control of the computer control means in accordance with the planned build pattern, as a width of the build layer varies along a length dimension of the build layer, resulting in a dynamically varying bead width of the beaded weave pattern.

Assignees

• Lincoln Global Inc

Inventors

• Peters Andrew R
• Paul Jonathan H
• Mitchell Levi J

Classifications

• Y02P10/25

  Process efficiency · CPC title

• B23K26/0884 Primary

  in at least three axial directions, e.g. manipulators, robots · CPC title

• B23K9/32

  Accessories · CPC title

• B23K9/133

  Means for feeding electrodes, e.g. drums, rolls, motors · CPC title

• B23K9/125

  Feeding of electrodes (for stabilising arc B23K9/073) · CPC title