US 12,377,566 B2
Method for laying out pieces to be cut automatically into a patterned fabric
Stéphane Barbe, Pessac (FR); Patrick Moreau, La Brede (FR); and Sébastien Fernandes, Pessac (FR)
Assigned to LECTRA, Paris (FR)
Appl. No. 17/617,489
Filed by LECTRA, Paris (FR)
PCT Filed May 28, 2020, PCT No. PCT/FR2020/050899
§ 371(c)(1), (2) Date Dec. 8, 2021,
PCT Pub. No. WO2020/254739, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 1906727 (FR), filed on Jun. 21, 2019.
Prior Publication US 2022/0234233 A1, Jul. 28, 2022
Int. Cl. B26D 5/00 (2006.01); B26D 7/01 (2006.01); B26F 1/38 (2006.01)
CPC B26D 5/005 (2013.01) [B26D 7/018 (2013.01); B26D 2005/002 (2013.01); B26F 1/38 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for placing pieces intended to be cut automatically from a fabric having a pattern that repeats at a predetermined pitch, called pattern pitch, the method comprising the steps of:
(a) determining a list of pieces to be placed on the fabric;
(b) for at least one piece of the placement, calculating a contour to be placed around the piece, the contour comprising a variable margin in order to avoid an overlap between adjacent pieces, the margin being a function of a predefined rate of variation of the fabric and of at least one predetermined constraint of placement of the piece on the fabric; and
(c) developing a theoretical placement of the pieces on the fabric taking into account the contour to be placed for the at least one piece;
wherein the rate of variation of the fabric corresponds to a percentage of elongation of the pattern fabric.