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2014 » Papers » Volume 4 » E-Learning instruments used to simulate the mechanisms of a sewing machine 1. E-LEARNING INSTRUMENTS USED TO SIMULATE THE MECHANISMS OF A SEWING MACHINE Authors: Ionesi Dorin, Ciobanu Luminita, Dulgheriu Ionut Volume 4 | DOI: 10.12753/2066-026X-14-284 | Pages: 351-354 | Download PDF | Abstract
A sewing machine is textile equipment used to assemble different types of materials together using stitches. One of the most important components of a sewing machine is represented by the sewing needle that fits into the needle bar. In order to ensure the movement of the needle bar, a connecting rod crank mechanism is used to transmit force and motion from the power source to the needle.
The connecting rod crank mechanism is widely used in textile industry. The paper presents the driving mechanism of the sewing needle, emphasising the influence of velocity of the main shat on the acceleration and velocity of the sewing needle in the penetration area.
This simulation contributes to a better understanding how the sewing machine works and its specific conditions. The dynamics simulation model and the kinematics are exemplified for the driving mechanism of the sewing needle. The simulation has been carried out using the Google SketchUp application and the Sketchy Physics plug-in.
The students learn how the needle movement takes place and is controlled. Because Google Sketch Up creates 3D models, the students can view the sewing needles from different angles and can understand how the system is built. The animation helps them see the sewing cycle, while this can be difficult on a sewing machine. They can also use the animations at home, without being connected necessarily to the internet. Meanwhile, it provides a foundation for the further research in the simulation of the mechanisms specific to sewing machines in the future. | Keywords
sewing machine, connecting rod crank mechanism, needle movement, simulation |
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