Study on the effect of tooth blank parameters on mesh behavior of aviation bevel gear considering thin web and narrow rim structure

This study establishes the mathematical model of aviation spiral bevel gear with tilt structure by considering the spatial relationship between cutter and gear blank involved machine-tool settings, and builds a finite element model for the spiral bevel gear with a thin web and narrow rim structure. It also investigates the influence law of different parameters of gear blank on the mesh characteristics. Results show that the decrement of the thickness of the rim does not influence the position of contact pattern. When the thickness of the rim is reduced, the tooth root stress shows an increasing trend and the peak-to-peak value of the transmission errors first decreases and then increases. A reduction of the web causes the position of contact pattern moving slightly from the center part to the heel. When the web thickness gets lower, the tooth root stress greatly declines, while the peak-to-peak value of the transmission errors keeps rising. When increasing the number of rows of the hole, the position of contact pattern gradually shifts from the middle to the heel, the changes of tooth root stress are not obvious, and the peak-to-peak value of the transmission errors initially decreases, but then increases afterwards.