The research on the cutting force of spiral bevel gear pinion milling is the basis of the power check of the main motor of the gear milling machine, the reliability analysis of key parts, the optimization of cutting parameters, the dynamic monitoring of the gear milling process and so on. Aiming at the machining process of spiral bevel gear small wheel by hobbing method of four-axis NC gear milling machine, this chapter deduces the relationship between the instantaneous undeformed chip area of the cutting layer and the motion parameters of the machine tool during rough cutting of small wheel according to the gear cutting geometric principle and the kinematics principle of four-axis gear milling machine, adopts the traditional cutting force model, establishes the cutting force model of spiral bevel gear small wheel by hobbing method, and compiles the milling force calculation program, The experimental scheme is designed to verify.
The instantaneous milling force model of spiral bevel gear pinion machined by denaturing method is established, and the calculation program is compiled. The calculation program can simulate the instantaneous cutting force in the process of small wheel rough milling according to the given small wheel structure parameters, cutter head parameters, machine tool adjustment parameters and cutting parameters. The milling force model can provide theoretical basis for cutting power calculation in gear milling machine design, dynamic load setting in key component reliability design, threshold selection in real-time monitoring of milling force in gear milling process, etc.