When gear meshing, why should we ensure that the gear contact width is large, gear tooth width? I know why the pinion is wider than the big one,
The pinion is wider. If the two gear width equal size gear "inevitably" there would be "axial dislocation", will reduce the actual meshing tooth width; small gear width, which can ensure the actual meshing tooth width, and save the material and reduce the weight of the best choice.
The width of the pinion is greater than the width of the big gear, which is the least material and the choice of weight reduction.
Because the width of the large gear is the necessary contact width of the gear to ensure the strength of the gear (contact, fatigue, strength, etc.) when the gear is designed.
