Construction of cutting force prediction model of honeycomb core with dagger knife

Honeycomb core material is widely used in aviation, aerospace and other fields with high cost performance, but its processing parameters and other reasons often cause the core lattice tearing, damage and other defects. The cutting force is an important physical quantity to measure the machining quality of Nomex honeycomb core material. In order to further optimize the machining parameters, this paper establishes a cutting force prediction model by excluding the influence of core band bonding and cutting position on the three-dimensional cutting force, and analyzes the cutting force of dagger under different cutting depth, feed speed, rake angle and flank angle Law of change. The experimental results and analysis show that the modified and optimized model fits well and can be used to predict the influence of corresponding variables on cutting force. With the decrease of tool inclination angle, the cutting force decreases, and compared with the rake angle, the influence of side inclination angle is greater. In the case of a single variable.