In an unstable orientation, both axial forces are directed away from the center of the gear. In a stable orientation, the helical gear faces are oriented so that each axial force is directed toward the center of the gear. One arrangement is stable, and the other is unstable. However, double helical gears are more difficult to manufacture due to their more complicated shape.įor both possible rotational directions, there exist two possible arrangements for the oppositely-oriented helical gears or gear faces. This arrangement can remove the need for thrust bearings. This arrangement cancels out the net axial thrust, since each half of the gear thrusts in the opposite direction resulting in a net axial force of zero. ![]() A double helical gear can be thought of as two mirrored helical gears joined together. Double helical gears, or herringbone gears, overcome the problem of axial thrust presented by “single” helical gears, by having two sets of teeth that are set in a V shape.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |