Transmission and method for adjusting the circumferential backlash of the transmission

Abstract

The invention relates to a transmission (10) that has a housing (20) and a first and a second shaft (30, 40), each of which has a bevel gear wheel (32, 42), said bevel gear wheels (32, 42) being in meshing engagement with each other. The first shaft (30) with a first bevel gear wheel (32) is designed as an axially adjustable shaft and is supported by two rolling bearings (50, 60) on both sides of the bevel gear wheel (32) for this purpose, and each of the rolling bearings (50, 60) has a shaft-side inner ring (52, 62) and a housing-side outer ring (54, 64). The shaft-side inner rings (52, 62) are provided on the first shaft (30) in a defined axial position, whereas the housing-side outer rings (54, 64) of the rolling bearings (50, 60) are guided on respective housing-side support surfaces (22, 24) and are restricted from moving towards each other solely by the inner rings and the shaft. The axial position of the housing-side outer rings (54, 64) of the rolling bearings (50, 60) can be adjusted on the side facing away from the bevel gear wheel (32) by a respective adjusting device (70, 80). Each of the adjusting devices (70, 80) has an adjusting element (72, 82) with an outer thread (74, 84) on the respective outer ring (54, 64) side facing away from the bevel gear wheel (32), said outer thread being inserted into a housing-side inner thread (26, 28). The inner thread (26, 28) and the outer thread (74, 84) are designed as fine threads, preferably with a pitch of maximally 0.75 mm.

Description

technical field [0001] The invention relates to a transmission with two bevel gears meshing with each other. Background technique [0002] Such transmissions are used in a wide variety of fields of mechanical engineering (maschinenbauliche) application. Torque is transmitted from one shaft to a second non-parallel shaft via two bevel gears. [0003] In gears of this type it is often desirable to adjust the rotational play (Verdrehspiel), that is to say the rotatability of one of the shafts without rotation of the second shaft and / or the axial pretension of the shaft or The axial clearance is adjusted according to the specific situation (fallweise). It is necessary here that these parameters can also be adjusted as easily as possible after assembly of the transmission. [0004] Heretofore conventional approaches have provided that one of the shafts is designed to be axially displaceable. This is usually achieved by providing spacers on the outside of the corresponding out...

AI Technical Summary

Problems solved by technology

[0007] In addition to the selective and costly mounting of the spacer, which can sometimes only be achieved unsatisfactorily, it has also been found to be disadvantageous that the spacer sinks during operation. And the position of the outer ring of the corresponding bearing, which is adjusted by the spacer, is no longer maintained, thus (dadurch) no longer maintains its theoretical presupposition (Soll-Vorgabe)

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