Airbag sewing support system, program, and airbag sewing support method

Abstract

We provide an airbag sewing support system. [Solution] An airbag sewing support system is provided, comprising a sewing line candidate generation unit 120 that outputs a plurality of sewing line candidate units for realizing the three-dimensional shape of an airbag by sewing together a base fabric, and a combination selection unit 130 that selects a sewing line combination, which is a combination of sewing lines for manufacturing the airbag by sewing, from among the plurality of sewing line candidate units. An airbag correction support method using the airbag sewing support system is also provided. A program is provided that is executed by a computer and causes the computer to function as the sewing support system.

Claims

1. A sewing line candidate generation unit that outputs multiple sewing line candidates for realizing the three-dimensional shape of an airbag by sewing together base fabrics, and The system includes a combination selection unit that selects a combination of sewing lines from among the aforementioned plurality of sewing line candidates, which is a combination of sewing lines for manufacturing the airbag by sewing. Airbag sewing support system.

2. The aforementioned combination selection unit is A combination candidate generation unit generates multiple combination candidates, which are candidates for the aforementioned sewing line combination, A combination candidate evaluation unit evaluates multiple combination candidates and selects a combination candidate whose evaluation results satisfy predetermined conditions as the sewing line combination, An airbag sewing support system according to claim 1, having the following features.

3. The combination candidate evaluation unit evaluates the combination candidate by inputting the feature quantities of the combination candidate into an evaluation function and calculating an evaluation value of the combination candidate using the evaluation function. The airbag sewing support system according to claim 2.

4. The system further comprises a feature calculation unit that calculates the aforementioned feature quantities, The aforementioned feature quantities include one or more of the number of sewing parts in the sewn product realized by the combination candidate, the number of sewing lines in the sewn product, the nesting efficiency when obtaining the sewing parts from the fabric, the two-dimensional strain amount of the sewn product, the burst resistance of the sewn product, the estimated sewing time of the sewn product, the storability of the sewn product, and the radius of curvature of the sewing parts. The airbag sewing support system according to claim 3.

5. The system further comprises a feature calculation unit that calculates the aforementioned feature quantities, The aforementioned feature quantity includes at least one of the following: a capacity error, which is the error between the volume of the sewn product obtained by sewing the sewn parts realized by the combination candidate and the volume of the three-dimensional shape of the airbag; a surface area error, which is the error between the surface area of ​​the sewn product obtained by sewing the sewn parts realized by the combination candidate and the surface area of ​​the three-dimensional shape of the airbag; and a shape error, which is the error between the shape of the sewn product obtained by sewing the sewn parts realized by the combination candidate and the shape of the three-dimensional shape of the airbag. The airbag sewing support system according to claim 3.

6. The feature calculation unit, Input the weights for the parts of the three-dimensional shape of the airbag, The weighted shape error is calculated by taking into account the weighting of the three-dimensional shape of the airbag and the shape error of each part of the sewn material. The airbag sewing support system according to claim 5.

7. The combination candidate generation unit searches for the combination candidates by generating combination candidates that enhance the evaluation by the combination candidate evaluation unit. The airbag sewing support system according to claim 2.

8. The system further includes a sewing line adjustment unit that generates an adjusted sewing line by adjusting the sewing lines included in the aforementioned sewing line combination. The airbag sewing support system according to claim 1.

9. The aforementioned sewing line adjustment section is The sewing line has a division point moving unit that sets a division point between the start and end points of the sewing line and adjusts the sewing line by moving the division point. The airbag sewing support system according to claim 8.

10. The division point movement unit generates an adjustment sewing line connected by a curve by performing spline interpolation, NURBS interpolation, or interpolation using a Bézier curve between adjacent start points, end points, and division points. The airbag sewing support system according to claim 9.

11. The aforementioned sewing line adjustment section is The system includes an adjustment and evaluation unit that inputs the characteristic quantities of the garment being adjusted, which are realized by the adjustment sewing line, into an evaluation function, and calculates an evaluation value of the adjustment sewing line using the evaluation function. The airbag sewing support system according to claim 10.

12. The division point movement unit moves the division point to increase the evaluation value by the adjustment evaluation unit, thereby generating a new sewing line under adjustment. The adjustment evaluation unit outputs the sewing line being adjusted, which has an evaluation value that satisfies predetermined conditions, as the sewing line after adjustment. The airbag sewing support system according to claim 11.

13. The system further includes a display unit that displays the three-dimensional shape of the airbag and the unfolded diagram of the sewing parts related to the sewing line combination. The airbag sewing support system according to claim 1.

14. The system further includes a display unit that displays at least one of the following: the three-dimensional shape of the airbag, the unfolded diagram of the sewing parts related to the sewing line combination, the characteristic quantities of the sewing line combination, and the evaluation values ​​of the sewing line combination. The airbag sewing support system according to claim 3.

15. The sewing line candidate generation unit includes inputting a plurality of feature points in three-dimensional data representing the three-dimensional shape of the airbag, and outputting a plurality of sewing line candidates by connecting at least a portion of the plurality of feature points. The airbag sewing support system according to claim 1.

16. The system further includes a feature point identification unit that identifies a plurality of feature points based on the aforementioned three-dimensional data. The airbag sewing support system according to claim 15.

17. The feature point identification unit identifies the feature points based on the curvature of the three-dimensional shape of the airbag. The airbag sewing support system according to claim 16.

18. The feature point identification unit identifies the feature point based on the distance between adjacent feature points. The airbag sewing support system according to claim 17.

19. The system includes a sewing line candidate generation unit that takes multiple feature points in 3D data representing the three-dimensional shape of an airbag as input and outputs multiple sewing line candidates for realizing the three-dimensional shape of the airbag by sewing together a base fabric by connecting at least some of the multiple feature points. Airbag sewing support system.

20. The system further includes a feature point identification unit that identifies the feature points based on the curvature of the three-dimensional shape of the airbag. The airbag sewing support system according to claim 19.

21. Executed by a computer, The computer is made to function as an airbag sewing support system according to any one of claims 1 to 20. program.

22. A sewing line candidate generation stage that outputs multiple sewing line candidates for realizing the three-dimensional shape of the airbag by sewing together base fabrics, and The system includes a combination selection step in which a combination of sewing lines for manufacturing the airbag by sewing is selected from among the aforementioned plurality of sewing line candidates. Airbag sewing assistance method.

23. The program described in claim 21 is to be executed by a computer, Airbag sewing method.

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