ЕКСПЕРИМЕНТАЛЬНЕ ДОСЛІДЖЕННЯ ПРОЦЕСУ РІЗАННЯ ВЗУТТЄВИХ МАТЕРІАЛІВ
EXPERIMENTAL STUDY OF THE PROCESS OF CUTTING SHOE MATERIALS
Сторінки: 17-19. Номер: №1, 2019 (269)
Автори:
О.С. ПОЛІЩУК
Хмельницький національний університет
O.S. POLISHCHUK
Khmelnytskyi National University
DOI: https://www.doi.org/10.31891/2307-5732-2019-269-1-17-19
Рецензія/Peer review : 12.11.2018 р.
Надрукована/Printed : 15.02.2019 р.
Анотація мовою оригіналу
В даній статті проводиться експериментальне дослідження процесу різання взуттєвих матеріалів в статичному та динамічному режимах.
Ключові слова: легка промисловість, швейні та взуттєві матеріали, різання, швидкість різання, чистота зрізу.
Розширена анотація англійською мовою
Interaction of an edge with visco-elastic material, in the course of its cutting, is characterized extremely difficult, mainly physical, by the phenomena. These phenomena are not subject to a clear analytical description. Only a combination of theoretical foundations with experimental studies will give an understanding of the true physical nature of this process. It will make important, in the applied relation, conclusions. Research on cutting materials in the footwear and clothing industry was conducted in a static mode by many scientists. At present, there is practically no study of cutting materials in a dynamic mode. To date, thanks to the development of measuring techniques, the opportunity to more accurately determine the parameters of the cutting process of materials. Using digital microscopes and high-speed video recording, you can record the process of immersing a working body into a material. Experimental installations were developed to investigate the operation of cutting footwear and sewing materials in static and dynamic regimes. For the experiment, samples of shoe materials with different physical and mechanical properties were selected. A study was carried out on the process of cutting shoe and sewing materials in different modes. The obtained results of experimental studies made it possible to draw the following conclusions. It was experimentally established dependence of the general work of cutting and preliminary compression of material on cutting speed in the range of various speeds. Dynamic cutting compared to static, can be characterized by the appearance of additional factors: an increase in the difference between the speed of applying the load from the side of the blade and the rate of distribution of deformations in the material; reduction of dry frictional force; increase of “inertia support” layers of material; a significant reduction in the cutting angle and so on. The growth rate of the useful work of the cutter blade has been experimentally determined and, accordingly, the reduction of the cutting force and the overall cutting performance with increasing cutting speed. Most footwear and sewing fibrous materials are anisotropic materials with different mechanical properties in different directions. One way to reduce anisotropic properties is to seal the material during the cutting operation. To assess the process of destruction and, in particular, cutting of visco-elastic materials, especially fibrous, the essential indicator is the cleanliness of the cut. In the course of experimental studies, the relationship between the cutting speed and the cutoff is established. As the cutting speed increases, the cut cleanliness improves.
Key words: light industry, shoe material, cutting, cutting speed, cutting cleanliness.
References
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