Hybrid bearing component with throttling structure

Abstract

The invention discloses a hybrid bearing component with a throttling structure, which is used for bearing a grinding wheel spindle, wherein, due to the arrangement of a static pressure oil chamber and a dynamical pressure oil chamber, the bearing capacity of a hybrid bearing is improved, a transitional oil chamber is connected with the static pressure oil chamber and the dynamical pressure oil chamber so as to enable the static pressure oil chamber and the velocity pressure oil chamber to be connected smoothly; the transitional oil chamber is arranged in an involute shape so as to be matched with the running characteristic of hydraulic oil; the dynamical pressure bearing capacity and the rigidity of the hybrid bearing are improved; besides, hydraulic oil passes through an oil supply hole and enters into an oil passage, then, enters into a first ring-shaped shallow slot through two first ring-shaped deep slots, and finally enters into the static pressure oil chamber and the dynamical pressure oil chamber through a connection hole, and the first ring-shaped shallow slot plays the effects of a throttler so as to reasonably set the throttling effect. Besides, a bearing sleeve is limited by an adjusting screw nut, so as to carry out fine adjustment on the position of the bearing sleeve and achieve the fine-tuning effect on the throttling effect.

Description

technical field [0001] The invention relates to a structural part on a grinding machine, in particular to a dynamic and static pressure bearing assembly with a throttling structure for carrying the main shaft of a grinding wheel frame. Background technique [0002] At present, the bearings used for grinding wheel spindles of grinding machines mainly use dynamic pressure bearings or static pressure bearings, and the bearings of some high-precision grinding machine spindles use dynamic and static bearings. The cavity is staggered in the axial direction, so that before entering the normal operating condition, the static pressure of the static pressure cavity is used to carry the external load; when entering the normal operating condition, the pressure oil in the static pressure cavity is closed, and the dynamic pressure cavity The dynamic pressure to bear the external load. The bearing of this structural form is only a simple combination of dynamic pressure and static pressure...

AI Technical Summary

Problems solved by technology

The bearing of this structural form is only a simple combination of dynamic pressure and static pressure, and its function is not compound, its structure is complex and its carrying capacity is insufficient.

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