US 12,298,738 B2
Method for controlling dimensional tolerances, surface quality, and print time in 3D-printed parts
Joel Ong, Eden Prairie, MN (US)
Assigned to Stratasys, Inc., Eden Prairie, MN (US)
Filed by Stratasys, Inc., Eden Prairie, MN (US)
Filed on May 21, 2024, as Appl. No. 18/670,397.
Application 18/670,397 is a continuation of application No. 18/227,243, filed on Jul. 27, 2023, granted, now 12,019,425.
Application 18/227,243 is a continuation of application No. 17/856,860, filed on Jul. 1, 2022, granted, now 11,846,927, issued on Dec. 19, 2023.
Claims priority of provisional application 63/218,247, filed on Jul. 2, 2021.
Prior Publication US 2024/0310813 A1, Sep. 19, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G05B 19/4093 (2006.01); B29C 64/393 (2017.01); B33Y 50/02 (2015.01); G06T 7/11 (2017.01); G06T 7/13 (2017.01); G06T 7/62 (2017.01); G06T 7/73 (2017.01); G06T 19/20 (2011.01); B29C 64/135 (2017.01)
CPC G05B 19/40931 (2013.01) [B29C 64/393 (2017.08); B33Y 50/02 (2014.12); G06T 7/11 (2017.01); G06T 7/13 (2017.01); G06T 7/62 (2017.01); G06T 7/75 (2017.01); G06T 19/20 (2013.01); B29C 64/135 (2017.08); G05B 2219/49023 (2013.01); G06T 2219/012 (2013.01); G06T 2219/2008 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for additive manufacturing by an additive manufacturing system comprising a build window, the method comprising:
accessing a digital print file comprising a set of print images for execution by the additive manufacturing system to manufacture a part represented by a part model, the set of print images comprising, for a first part layer in a set of part layers of the part:
a first outer print image associated with a first outer exposure energy; and
a first inner print image associated with a first inner exposure energy; and
for the first part layer of the part:
loading a first subvolume of resin into a first interstitial volume over the build window;
during a first exposure period, exposing the first subvolume of resin according to the first inner print image at the first inner exposure energy to selectively polymerize resin within an inner region of the first subvolume of the resin and to form a first region of the first part layer of the part; and
during a second exposure period, exposing the first subvolume of resin according to the first outer print image at the first outer exposure energy to selectively polymerize resin within an outer region of the first subvolume of resin to form a second region of the first part layer of the part encircling the first region of the first part layer of the part.