System and method for miter and notch identification for pattern sew line generation

Patent metadata

Field	Value
Publication number	US-10318657-B2
Application number	US-201615281259-A
Country	US
Kind code	B2
Filing date	Sep 30, 2016
Priority date	Sep 30, 2016
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

A system and method is provided that facilitates miter and notch identification for pattern sew line generation. A processor of the system may be configured to access a pattern data that defines a flat shape with cut lines corresponding to locations at which the shape is cut out of a material. Based on the pattern data, the processor may generate a computer-aided-design (CAD) model that includes a plurality of curves that define boundary edges of an object that corresponds to the shape defined by the pattern data. In addition, the processor may automatically identify portions of the boundary edges that correspond to alignment guides including at least one miter alignment guide, notch recess alignment guide, notch projection alignment guide, or combination thereof. Further, the processor may include at least one sew line in the CAD model that is parallel to and offset by the at least one seam allowance distance from at least one boundary edge towards the interior of the CAD model, without being offset by the at least one seam allowance distance from portions of the at least one boundary edge that include the identified alignment guides.

First claim

What is claimed is:

1. A system for miter and notch identification for pattern sew line generation comprising:
at least one processor configured to:
access pattern data that defines a flat shape with cut lines corresponding to locations at which the shape is cut out of a material, wherein the pattern data does not specify sew lines offset from the cut lines on an interior portion of the shape;
based on the pattern data, generate a computer-aided-design (CAD) model that includes a plurality of curves that define boundary edges of an object that corresponds to the shape defined by the pattern data;
automatically identify portions of the boundary edges that correspond to alignment guides including at least one miter alignment guide, notch recess alignment guide, notch projection alignment guide, or combination thereof;
after identification of the edges of the portions of the boundary edges that correspond to the alignment guides, place at least one sew line in the CAD model that is parallel to and offset by the at least one seam allowance distance from at least one boundary edge towards the interior of the CAD model, without being offset by the at least one seam allowance distance from portions of the at least one boundary edge that include the identified alignment guides.

2. The system according to claim 1 , wherein the processor is configured to automatically identify the alignment guides without basing the identification of the alignment guides on inputs through an input device that identify individual locations of alignment guides on the CAD model, wherein the at least one processor is configured to identify portions of the boundary edges of the CAD model that correspond to the at least one miter alignment guide, wherein the at least one processor is configured to identify portions of the boundary edge that correspond to at least one of the notch recess, notch projection, or combination thereof, wherein the at least one processor is configured to save the CAD model including the at least one sew line to at least one data store.

3. The system according to claim 2 , wherein the at least one processor is configured to cause the CAD model including the at least one sew line to be displayed through a display device.

4. The system according to claim 3 , wherein the at least one processor is configured to identify the notch recess or the notch projection alignment guide by determining that:
the notch recess or the notch projection alignment guide is represented in the CAD model by two or three curves;
the two or three curves are each in length less than twice the at least one seam allowance distance at the location of the notch;
the two or three curves each have a minimum direction change of at least a first angle threshold from each other and from adjacent curves on the boundary edges connected directly to at least two of the two or three curves; and
the adjacent curves on the boundary edges connected to at least two of the two or three curves extend along vectors that are coincident with each other or are at an angle with respect to each other that is less than a second angle threshold.

5. The system according to claim 4 , wherein the at least one processor is configured to identify a miter alignment guide by determining that both:
the miter alignment guide is represented in the CAD model by a single curve having a length that is less than twice the seam allowance distance at the location of the miter alignment guide; and
direction changes from the single curve of the miter alignment guide to adjacent curves on the boundary edges connected directly to each side of the single curve of the miter alignment guide are at least a third angle threshold.

6. The system according to claim 5 , wherein the first angle threshold is 20 degrees, wherein the second and third angle thresholds are 15 degrees.

7. The system according to claim 1 , wherein the pattern data includes at least one pattern file in either an AAMA or ASTM DXF format.

8. A method for miter and notch identification for pattern sew line generation comprising:
through operation of at least one processor:
accessing pattern data that defines a flat shape with cut lines corresponding to locations at which the shape is cut out of a material, wherein the pattern data does not specify sew lines offset from the cut lines on an interior portion of the shape;
based on the pattern data, generating a computer-aided-design (CAD) model that includes a plurality of curves that define boundary edges of an object that corresponds to the shape defined by the pattern data;
automatically identifying portions of the boundary edges that correspond to alignment guides including at least one miter alignment guide, notch recess alignment guide, notch projection alignment guide, or combination thereof;
after identifying the portions of the boundary edges that correspond to the alignment guides, placing at least one sew line in the CAD model that is parallel to and offset by the at least one seam allowance distance from at least one boundary edge towards the interior of the CAD model, without being offset by the at least one seam allowance distance from portions of the at least one boundary edge that include the identified alignment guides.

9. The method according to claim 8 , wherein automatically identifying portions of the boundary edges that correspond to alignment guides is carried out without basing the identification of the alignment guides on inputs through an input device that identify individual locations of alignment guides on the CAD model, wherein automatically identifying portions of the boundary edges that correspond to alignment guides includes both:
identifying portions of the boundary edges of the CAD model that correspond to the at least one miter alignment guide; and
identify portions of the boundary edge that correspond to at least one of the notch recess, notch projection, or combination thereof,

further comprising through operation of the at least one processor:
saving the CAD model including the at least one sew line to at least one data store.

10. The method according to claim 9 , further comprising through operation of the at least one processor:
causing the CAD model including the at least one sew line to be displayed through a display device.

11. The method according to claim 10 , wherein automatically identifying portions of the boundary edges that correspond to the notch recess or the notch projection alignment guide includes determining that:
the notch recess or the notch projection alignment guide is represented in the CAD model by two or three curves;
the two or three curves are each in length less than twice the at least one seam allowance distance at the location of the notch;
the two or three curves each have a minimum direction change of at least a first angle threshold from each other and from adjacent curves on the boundary edges connected directly to at least two of the two or three curves; and
the adjacent curves on the boundary edges connected to at least two of the two or three curves extend along vectors that are coincident with each other or are at an angle with respect to each other that is less than a second angle threshold.

12. The method according to claim 11 , wherein automatically identifying portions of the boundary edges that correspond to a miter alignment guide includes determining that both:
the miter alignment guide is represented in the CAD model by a single curve having a length that is less than twice the seam allowance distance at the location of the miter alignment guide; and
direction changes from the single curve of the miter alignment guide to adjacent c

Assignees

• Siemens Product Lifecycle Man Software Inc

Inventors

• Kang Aarcus
• Attar Marc
• Pennachi Fredrick

Classifications

• G06F30/00

  Computer-aided design [CAD] · CPC title

• G06F2113/12

  Cloth · CPC title

• D05B19/02 Primary

  Sewing machines having electronic memory or microprocessor control unit · CPC title

• G06F17/5086

  Physics · mapped topic

• G06F17/50 Primary

  Physics · mapped topic