Parametric Study on the Geometric and Kinetic Aspects of the Slider-Crank Mechanism

摘要

Appropriate performance of slider-crank mechanisms in cutting machines depends on suitable selection of its parameters. The reaction forces in joints and the internal torque are changed when the crank rotates; therefore, investigating the effects of mechanism parameters on the internal torque and the reaction forces in joints in an operational cycle would be impossible. In this study, an efficient and simply implementable procedure based on averaging of kinetic parameters is utilized to determine how the crank and connecting rod lengths, crank angular velocity, and the inertia effects of the slider influence the kinetic parameters. The model was also simulated to obtain an optimal crank to connecting rod length ratio. Furthermore, in a cutting machine, the cutting speed would be increased using two methods: (1) increasing the crank length and (2) increasing the crank angular velocity. A simulation is performed to understand the advantages and drawbacks of both methods.