The distribution of relevant meshing characteristics of the involute helical gear transmission system is shown in the figure.
From Figure (a), it can be seen that the length of the contact wire continuously changes during the process from meshing in to meshing out, and during the meshing process, the length of the contact wire continuously increases; In the middle meshing region, the length of the contact wire remains unchanged; During the meshing process, the length of the contact wire gradually decreases to 0.
As can be seen from Figure (b), the unit line load during the entire meshing process is 8.11 × 104～9.44 × It varies periodically within 104 N/m.
As can be seen from Figure (c), the average contact pressure at the meshing end in a helical gear transmission system is significantly greater than that at the meshing end.
From Figure (d), it can be seen that during the process of helical gear transmission from meshing in to meshing out, the equivalent radius of curvature first increases and then decreases, but the decrease is small; The entrainment speed gradually increases.
From Figure (e), it can be seen that the relative sliding speed and sliding roll ratio between meshing tooth surfaces in a helical gear transmission system have a basically consistent variation pattern, both of which are V-shaped. The values at the meshing in and out ends are relatively large, while the values near the nodes are relatively small.
From Figure (f), it can be seen that the relative sliding distance between the driving wheel and the driven wheel at the meshing position of the tooth root and the tooth top is larger, while the relative sliding distance near the node is smaller.