PRECISION GAS-STATIC SPINDLE ASSEMBLY Russian patent published in 2022 - IPC F16C32/06 

FIELD: precision rotation units creation.

SUBSTANCE: invention relates to the field of creating precision rotation units in highly precise machine tools, precision stands, coordinate measuring machines and other similar equipment that requires precision adjustment of the rotation axis or the implementation of precision translational radial and axial movements of the rotor with nanoscale accuracy. The spindle assembly contains a spindle mounted in the housing (1) by means of two gas-static bearings with the possibility of rotation. Each support consists of a spherical spike (3) installed with a gap in the spherical recess of the aerostatic sleeve (2), while two gas-static supports are directed by spherical surfaces (17) of the spherical spikes (3) towards each other, and the aerostatic sleeves (2) are connected to body (1), and in the spherical surfaces of the aerostatic bushings (2) there are holes for installing chokes (15) and supplying compressed gas to them through internal channels. The above holes in at least one aerostatic sleeve (2) are combined into at least two separate groups of holes, with independent supply of compressed gas through separate control elements to each group of holes. In addition, at least one aerostatic sleeve (2) is installed with the possibility of adjusting its position in a plane perpendicular to the axis of rotation of the spindle, at least in one direction with the help of adjusting screws.

EFFECT: improving the accuracy of processing parts.

3 cl, 17 dwg