OBRABOTKAMETALLOV MATERIAL SCIENCE Том 23 № 3 2021 EQUIPMEN . INSTRUM TS Vol. 6 No. 1 2024 After the synthesis of the lever mechanism, which enabled calculating the motion of the roller center equal to 28 mm, the main parameters for the synthesis of the cammechanismwere determined. The synthesis justifi ed the law of motion of the roller center along the cycloid and determined the radii of curvature (see Fig. 5). This led to the conclusion that a roller radius of 37.5 mm satisfi es condition (17). The calculated pressure angles are within acceptable limits throughout the entire range of rotation of the main shaft, from 0° to 360°. The radius vectors of the cam are shown as a matrix of values (Fig. 6). After processing the tabular values of the radius vectors with splines, we conducted a kinematic analysis of the mechanism for the characteristic points of the Assur groups. The purpose of this analysis was to confi rm the accuracy of the synthesis and the smoothness and continuity of the kinematic parameters graphs of the Assur groups characteristic points. For the latter group, it was necessary to confi rm the value of the heddle shaft stroke for point G, since it was the basis for calculating and constructing the synthesis methodology. Thus, for point B, the kinematic characteristics are shown in Fig. 12, and for point C, in Fig. 11. For point D, the kinematic characteristics are shown in Fig. 13. a b Fig. 12. Kinematic characteristics for point C: (a) velocity; (b) acceleration a b Fig. 11. Kinematic characteristics for point B: (a) velocity; (b) acceleration
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