Abstract:

Is stated a study of influence of kinematic and dynamic errors of crank-piston mechanisms. For purpose of determination of technological errors of position, velocity and acceleration of output links of mechanism is applied the differential method. For real crank-piston with clearances in kinematic pairs with taking into account additional and basic motions of mechanism are determined the errors of position, velocity and acceleration of coupler and piston. All necessary requirements that are characterized for definition of dynamical precision of crank-piston mechanisms are shown. Due the comparative analysis of reaction forces in the kinematic pairs of ideal and real mechanism are determined their errors. The obtained results gives the possibility with taking into account of error of mechanism to define real law of motion of piston that promotes to reliable and durable operation of piston as well as whole mechanisms.

Keywords: mechanism; kinematics; dynamics; error; precision; research.