DYNAMIC-MATHEMATICAL MODEL OF VERTICAL MOTION OF SEWING MACHINE SUPPORTER

Vertical motions of sewing machine supporter, material and spring and their parameters in the sewing process requires exactly harmonizing within needed limits. Dynamic-mathematical model of vertical motion will help us to derive dynamic pressure of supporter on the material because the quality of sewing process depends on this pressure. In the moment when support contacts material the pressure od supporter is bigger then static pressure because of vibrations which leads to material damage from lathe cogs and to additional ballast to the transmitting mechanism. In this paper there