Spur gear differential with positive and negative profile shift on the sun gears

摘要

Spur gear differential (1) with a first sun (3) and a second sun (5), a first set of planetary gears (7) being associated with the first sun (3) and a second set of planetary gears (9) being associated with the second sun (5) and the first set of planetary gears (7) meshes with the second set of planetary gears (9) and the number of teeth (11) of the first sun (3) is equal to the number of teeth (12) of the second sun (5), whereby profile shifting causes the Teeth (11) of the first sun (3) are arranged on a tip circle (2) with a tip circle diameter (DK1) which is different than the tip circle diameter (DK2) of a tip circle (4) on which the teeth (12) of the second sun (5) are arranged, with the first set of planet wheels (7) only meshing with the first sun (3) and with the second set of planet wheels (9) only meshing with the second sun (5), the tip circle diameter (DK1) of the Addendum circle (2) of the teeth (11) of the first sun (3) by positive profile shift and the addendum circle du diameter (DK2) of the tip circle (4) of the teeth (12) of the second sun (5) is realized by negative addendum modification, characterized in that the addendum modification factor of the first sun (3) is greater than the numerical value 0.8, - the Addendum modification factor of the second sun (5) is smaller than the numerical value [- 0.8] and- the tip circle diameter (DK1, DK2) of one of the suns (5) is smaller than the root circle diameter (DF1) of the other sun (3).