Static pressure workbench for extra-large vertical grinder

Abstract

The invention relates to a static pressure workbench for an extra-large vertical grinder. The workbench comprises a workbench base and an upper workbench, wherein a rotary centering spindle which extends vertically downwards is fixedly arranged in the center of the upper workbench. The workbench is characterized in that: a spindle static pressure radial support for supporting the rotary centering spindle is arranged at a center hole of the workbench base; a moment servo motor direct drive mechanism is arranged between the workbench base and the rotary centering spindle; and a far end closed axial positioning static pressure system is arranged between the workbench base and the upper workbench. The static pressure system and a drive system are organically unified, so that high rigidity, accuracy and sensitivity are ensured, the operating accuracy and rigidity of the system are improved, and the service life of the system is prolonged.

Description

technical field [0001] The invention relates to a vertical grinder, in particular to a static pressure workbench for a super-large vertical grinder. Background technique [0002] With the rapid development of the wind power industry, large-scale and offshore and deep-sea development of wind turbines are the direction of national industry development. After the successful development of 5 MW wind turbines by domestic wind turbine factories for the first time, all wind farms have started to develop high-power wind turbines. The raceway grinding of super-large slewing ring bearings for units of 5 MW and above has become a difficult problem that needs to be overcome urgently. CNC vertical grinder for processing. [0003] But, there is no mature high-precision CNC vertical grinding machine of 6 meters and above at home and abroad. Therefore, a large vertical lathe plus a grinding head was used to process the raceway in the early stage of trial production of wind turbine parts ...

AI Technical Summary

Problems solved by technology

[0003] However, there is no mature high-precision CNC vertical grinding machine of 6 meters and above at home and abroad.

Therefore, a large vertical lathe plus a grinding head is used to process the raceways in the initial stage of trial production of wind turbine parts of 5 MW and above, resulting in poor product precision and low yield

The main reason is that the workbench for installing and processing parts on the vertical lathe adopts an impure static pressure structure, the rotation accuracy of the spindle is poor, and the axial runout error of the table is large; the transmission chain causes large vibration through the gear motor + gear meshing, and it is difficult to meet the product requirements.

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