Technologies and Engineering

Calculation of the two-crystal four-earth mechanism of the sewing machine non-triple

Purpose. Improvement of methods of designing target mechanisms of light industrial process machinery with the use of applied CAD programs. Methodology. Methods of metric synthesis and kinematic analysis of typical mechanisms of technological light industry machines based on vector transformation of coordinates are used. Findings. The geometrical parameters of a quadrilateral two-crank mechanism for a sewing machine of a series 97; obtained mathematical models describing the functions of the position of moving parts and characteristic points of the mechanism; Schematic design of the mechanism in the CAD program; Graphs of necessary and actual supply of needle filaments are constructed by the investigated mechanism. Originality. The proposed method of analytical research of two-crank mechanisms on the basis of numerical solution of vector equations of kinematics, with the help of which mathematical models were created, and a schematic computer simulation of the thread take-up mechanism of a sewing machine in the applied program Mathcad. Practical Value is to use the obtained results in designing and kinematic research of typical mechanisms of sewing machine pullers

thread take-up mechanism, two-crib mechanism, sewing machine