Development and experiment of cutting force model on conical pick cutting rock at different wedge angles

Aimed at investigating the quantitative relationship between different angles at which conical picks wedge rock and rock interaction, the cutting force in order to allow conical picks to work on rocks with a greater efficiency and lower energy consumption, this paper presents an analysis of the stress state of conical pick, based on the mechanics model of conical pick cutting rock and combined with actual working conditions in which conical picks work on rocks at different wedge angles. The paper introduces the determination of the stress distribution of conical pick cutting rock at different wedge angles, development of the cutting force mathematical model, the description of the law governing wedge angle and half cone angle on the effect of cutting force and changing trend and regularity, and the simulation. The results indicate that, where sum of the wedge angle and half cone angle is less than ninety degrees, cutting force assumes nonlinear variation characteristics. The cutting mechanics model marked by a greater reliability and the more simple mathematical description promises as a theoretical basis for cutting theoretical research and shearer design.