The present work is aimed at studying the effect of fabric compressibility, feed rate and thread tension on the shape of lockstitch and the amount of thread consumed per stitch. Images of different possible stitch shapes have been captured by varying these parameters, and it is found that stitch shape may be rectangular, elliptical, elongated elliptical or circular, depending on the interaction between these parameters. Then, Box-Behenken design of experiment is applied to study the effect of these parameters on the amount of thread consumed per stitch. The contribution% of all the parameters affecting thread consumption is calculated and it is found that the feed rate has highest contribution (92%) followed by thread tension (2.18%) and fabric compressibility (1.53%). From this study, it can be concluded that the prediction of thread consumption in lock-stitching process is only possible if the geometry of the stitch is correctly assumed which varies due to the variations in feed rate, fabric compressibility and thread tension.

中文翻译：

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不同参数对针迹形状和线消耗的影响

目前的工作旨在研究织物的可压缩性，进给速度和线张力对平缝形状以及每针消耗的线量的影响。通过改变这些参数已经捕获了不同可能的针迹形状的图像，并且发现针迹形状可以是矩形，椭圆形，细长的椭圆形或圆形，这取决于这些参数之间的相互作用。然后，采用Box-Behenken实验设计来研究这些参数对每针消耗线数的影响。计算了影响线消耗的所有参数的贡献率，发现进给速度的贡献最大（92％），其次是线张力（2.18％）和织物可压缩性（1.53％）。根据这项研究，