# Discussion on the Preset Preset of Non-circular modal gear pressurization

2019-03-14 09:22:08

The number of oil distribution holes is as shown, for a non-circular planetary gear train in which the number of outer gear cycles is n1 and the number of internal gear cycles is n3 (n3>n1). If the internal gear is a moving wheel, when the moving wheel rotates, the closed cavity reaches the maximum and minimum areas n3 times in the process of one week from the starting position. According to the analysis of the existence of the oil distribution hole, the portion of the root circle of the planetary gear 2 at the maximum position of the closed cavity area and the root circle of the planetary gear 1 at the adjacent minimum position is the oil distribution hole.

In fact, from the analysis of the existence of the oil distribution hole, it is known that the oil distribution hole is composed of a portion where the root circle of the planetary wheel intersects when the closed cavity reaches the maximum and minimum areas. The maximum area of â€‹â€‹the closed cavity is where the minimum radial diameter of the non-circular external gear coincides with the maximum radial diameter of the non-circular internal gear, and the minimum area of â€‹â€‹the closed cavity is the maximum radial diameter of the non-circular external gear and the minimum radial diameter of the non-circular internal gear. Therefore, it can be known from the geometric knowledge that when the number of cycles of the non-circular external gear is n1 and the number of cycles of the non-circular internal gear is n3, the moving wheel needs to be from the maximum area position to the adjacent minimum area position. The angle of the turn is (Pn1 Pn3).

Therefore, the position of the oil distribution hole is such that when i and j take adjacent values, the position of the root circle of the planetary gears 1, 2 constituting the closed cavity is the position of the oil distribution hole. As shown in a, 2b and. Formation of oil distribution hole 2 Distribution characteristics of oil distribution hole The rear side of the root circle of the planetary gear 2 in the previous position and the front side of the root circle of the planetary gear 1 in the latter position constitute the oil distribution hole, such as (a), (b) and. That is, for a closed cavity composed of the planetary gears 1, 2, the planetary gear 1 always turns on the oil distribution hole, and the planetary gear 2 always closes the oil distribution hole (only for the corresponding closed cavity).

Because n1Pn1 Pn3, the revolution angle of the planetary gear 2 at the largest (or smallest) area of â€‹â€‹the previous one is larger than the revolution angle of the planetary gear 1 at the smallest (or largest) area of â€‹â€‹the latter. From the analysis of the existence of the oil distribution hole, it is known that the oil distribution hole is always composed of the rear end of the root circle of the planetary gear 2 of the previous position and the front end of the root circle of the planetary gear 1 of the latter position, and therefore, the moving wheel is The planetary gear train of the non-circular external gear 1 has an oil distribution hole which is the intersection of the tooth root circle of the largest and smallest adjacent area, as shown.

For the planetary gear train whose moving wheel is a non-circular internal gear, as well as the installation characteristics of the planetary gear, the planetary gear 2 is at the position where the planetary gear 1 is located after the moving wheel rotates the angle 2Pn3, and the oil distribution hole is Position of the planetary gear 1 after the moving wheel turns over the corner (Pn1 Pn3), 2Pn3

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