Design and analysis of cam cutting mechanism with oscillating follower for PC steel bars

Abstract

To solve problems associated with the processing of PC steel bars, such as continuous cutting, fracture oil, and low sizing precision, an online sizing cutting scheme using an oscillating follower cam and based on mechanical electro-hydraulic integration is proposed. The technique structure of the oscillating follower cam cutting system is outlined. The motion law of the oscillating follower was analyzed with a cam mechanism to inform the design of a conjugate cam. A parameter selection principle for the conjugate cam cutting mechanism with oscillating follower is proposed and employs the parametric proportional coefficient method. A dynamic model with clearance is established, and the dynamic performance is analyzed. A three-dimensional entity model of the cam cutting mechanism with oscillating follower is built, and dynamic simulation and prototype testing are conducted on this model. The results show that the mechanism meets the engineering requirements and has the advantages of simple structure and high cutting precision. This research forms the theoretical basis for online sizing cutting cam mechanisms and outlines effective design methods for the development of new products.