Abstract
In cam design process, synthesizing the motion curves is very important because of the effect of motion curves to cam size, force, and vibration. Thus, improving the kinematics of cam curves is significant. This paper presents a general synthesis of motion curves of cam mechanisms. A Non Uniform Rational B-Spline (NURBS) is used to improve the kinematics. The linear system of equations is established to determine motion curves for arbitrary boundary conditions of displacement, velocity, acceleration, and jerk. By controlling the weight parameters of NURBS, the peak values of acceleration and jerk can decrease. Several examples are presented to demonstrate this research. The results are also compared with traditional motion curves.
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