Planetary gear

Abstract

The lubrication system for the planetary gear drive mechanism has an oil inlet (13), connected to an external oil pump in a fixed housing. Oil flows through a channel (16) supplying oil to outer (5) and inner (6) ball bearings for the output shaft (3). Oil flows through further channels to an axial thrust bearing (9) and planet-gear bearings and ring-gear bearings (11). Oil flows into the interior space (17) of the housing and leaves via a drain connection (14) in the housing wall (18).

Description

technical field

[0001] The invention relates to a planetary gearbox having a transmission shaft connected to a sun gear, a driven shaft connected to a planet carrier and supported in a casing by a first outer bearing and a second inner bearing, wherein the two bearings are passed through a piston The rings are spaced apart from each other and also have a thrust bearing, a ring gear rotatably arranged in the gearbox housing via the ring gear bearing, an axially movable sliding sleeve and a lubrication circuit in the gearbox, which is used in particular for machine tool. Background technique

[0002] These planetary gearboxes, which are mostly designed as single-stage or multi-stage planetary gearboxes, are mainly used in machine tool drives as well as in turning, milling and machining centres. The connectable planetary gearbox increases the power bandwidth of the spindle motor to increase the flexibility of the machine tool through high torques or high speeds when machining ...

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