Abstract
During the research, the main components of the curvature of the axis of the thread were determined, taking into account the deformation of the section in the contact zone with the guide. Irregularity of the geometric dimensions of the cross-section of the thread along the length and the input tension over time significantly affect the value of the tension of the thread after passing through the guide. At the same time, the speed of thread movement is important. When the speed of movement increases, the values of dynamic loads in the zone of interaction of the thread with the cylindrical guide surfaces of large and small curvature, thread guides, increase. The dependences of the output tension of a complex thread or yarn on the radius of curvature of the guide surface of a large curvature are established, taking into account the input tension, the angle of coverage, the type of raw material, the ratio of the radius of the cross section of the thread and the inner radius of the guide, bending stiffness, deformation in the contact zone, nonlinear dependence of the coefficient of friction.
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