The tooth profile of spiral bevel gear is mainly composed of concave tooth surface, convex tooth surface, tooth top part and tooth root part. Take the CATIA three-dimensional model of right-hand spiral bevel gear as an example, as shown in Figure 1.
In addition to the original parameters, such as tooth number Z, modulus m and helix angle, the key elements of spiral bevel gear β、 Pressure angle α P, there are also calculated parameters, such as pitch cone angle δ、 Root cone angle δ f. Face cone angle δ a. Outer cone pitch re, tooth width b, indexing circle diameter D, outer circle diameter D of large end, tooth top height h a, tooth root height H F, full tooth height h, back cone pitch, back cone angle and tooth top clearance C of large end. The key calculation parameters of the above spiral bevel gear are shown in the axial screenshot of the spiral bevel gear transmission pair in Figure 2.
