Model and Simulation of Globoidal Cam Mechanisms with Oscillating and Dual Stopping Followers

Abstract

Abstract. Globoidal cam mechanisms with oscillating and dual stopping followers are necessary to accomplish the rise-dwell-fall-dwell periodic motion.The trajectory surface of roller axis of oscillating globoidal cam mechanism is the offset surface of working surface of the cam, and its mathematical model is relatively simple. According to the spatial geometric relationship, the coordinate equation of trajectory surface of roller axis is derived and the original angle positions for dual stopping followers are analyzed. As a result, the three-dimension (3D) model of globoidal cam mechanism with oscillating and dual stopping followers is generated based on the offset surface method based on the UG software. Finally, the dynamic model is realized using Adams software, and through the dynamic simulation, the oscillating angle displacement, angular velocity and angular acceleration of the double-stop swinging cam mechanism are studied. According to the simulation results, it can be concluded that the input speed of globoidal cam mechanism is an important factor that affects the output performance of the mechanism. Through the above research, it can provide some reference for the design of spatial cam mechanism.

Non-periodic motion reduction in globoidal cam with roller follower mechanism

“…studied the periodic motion of a rise-dwell-fall-dwell cam profile for a globoidal cam and a dual stopping followers. 9 Alzate et al. observed that the follower is detached from the cam under the variation of cam angular speed and showed an emergence periodic impacts and chattering.…”

“…8 Ge et al studied the periodic motion of a rise-dwellfall-dwell cam profile for a globoidal cam and a dual stopping followers. 9 Alzate et al observed that the follower is detached from the cam under the variation of cam angular speed and showed an emergence periodic impacts and chattering. 10 DasGupta and Ghosh used a constant pressure angle to assess jamming of the follower in its guide by taking into account the follower-guide friction.…”