US 11,989,004 B2
Lamination planning method for laminate molded object, and laminate molded object manufacturing method and manufacturing device
Shuo Huang, Hyogo (JP); Takeshi Yamada, Hyogo (JP); Shinji Sato, Hyogo (JP); Masatoshi Hida, Hyogo (JP); and Tatsuya Fujii, Hyogo (JP)
Assigned to KOBE STEEL, LTD., Hyogo (JP)
Appl. No. 17/632,883
Filed by KOBE STEEL, LTD., Hyogo (JP)
PCT Filed Aug. 5, 2020, PCT No. PCT/JP2020/030011
§ 371(c)(1), (2) Date Feb. 4, 2022,
PCT Pub. No. WO2021/029297, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. 2019-147432 (JP), filed on Aug. 9, 2019; and application No. 2019-147433 (JP), filed on Aug. 9, 2019.
Prior Publication US 2022/0269242 A1, Aug. 25, 2022
Int. Cl. G05B 19/4099 (2006.01); B33Y 50/00 (2015.01); B23K 9/04 (2006.01)
CPC G05B 19/4099 (2013.01) [B33Y 50/00 (2014.12); B23K 9/044 (2013.01); G05B 2219/49023 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A depositing planning method for an additively-manufactured object, to build an additively-manufactured object using three-dimensional shape data of the additively-manufactured object by an additive manufacturing apparatus for depositing a weld bead on a base plate, wherein
a computer executes:
a step of acquiring the three-dimensional shape data;
a step of creating a depositing plan that defines a welding pass for forming each layer obtained by dividing a shape of the three-dimensional shape data into layers using the weld bead, and a welding condition for forming the weld bead;
a step of setting an inter-pass time from an end of a welding pass to a start of a next welding pass for a plurality of the welding passes, and calculating an inter-pass temperature by performing heat transfer calculation in the inter-pass time;
a step of determining whether the inter-pass temperature falls within a preset inter-pass temperature range, adjusting the inter-pass time until the inter-pass temperature falls within the inter-pass temperature range, and repeating the heat transfer calculation;
a step of calculating a building time required for building the additively-manufactured object according to the inter-pass time when the inter-pass temperature falling within the inter-pass temperature range is calculated and a welding pass time required for forming the weld bead in the welding pass;
a step of repeatedly correcting, by comparing the building time with a preset upper limit value, the welding condition in the depositing plan until the building time becomes equal to or less than the upper limit value;
a step of creating an operation program based on the depositing plan including the corrected welding condition; and
a step of sending commands to perform additive manufacturing according to the operation program.