The cutting force of spiral bevel gear milling is an important data for the design of NC gear milling machine. At the same time, it is also the basis for studying the vibration monitoring of gear milling process, tool wear monitoring, cutting force monitoring, optimization of gear milling cutting parameters, and finally realizing the intellectualization of gear milling process. Form milling is similar to face milling. The research on the cutting force of face milling by Chinese and foreign scholars can be used as a reference for the research on the cutting force of form milling.
Firstly, the method of determining the adjustment parameters of spiral bevel gear large wheel machine tool is introduced, then the geometric principle of machining spiral bevel gear by forming method is described, and the calculation method of instantaneous undeformed chip area is deduced. Using the classical milling force model, the instantaneous dynamic milling force model of machining spiral bevel gear large wheel by forming method is established, the corresponding simulation calculation program is compiled, and the experimental device is designed to verify the correctness of the theoretical analysis results.
The calculation formula of the adjustment parameters of the large gear milling machine for machining spiral bevel gears by SFT method is deduced, and the coordinate system models of the cutter, workpiece and gear milling machine are established respectively. According to the kinematic principle of the gear milling machine, the calculation formula of the instantaneous undeformed chip area in the machining process is deduced, the appropriate cutting force model is selected, the calculation model of the instantaneous milling force for machining spiral bevel gears by forming method is established, and the simulation program is compiled. According to the given large wheel structure parameters, cutter head parameters and machine tool adjustment parameters, the instantaneous milling forces in three directions when cutting teeth with different cutting parameters can be calculated. The model is suitable for the calculation of cutting force in the machining of spiral bevel gear by forming method, and can provide a theoretical reference for the design of NC spiral bevel gear milling machine.