Precision centering anti-tilting device with static pressure rotary workbench

Abstract

The invention discloses a precision centering anti-tilting device with a static pressure rotary workbench. The precision centering anti-tilting device with the static pressure rotary workbench structurally comprises a static pressure rotary workbench mounting base, the static pressure rotary workbench, double-row cylindrical roller bearings, a thrust ball bearing, an annular base plate, a bearinggland, a shrink ring, a connection board, a gland, an angle encoder and a center shaft, wherein the center shaft is fixedly arranged on the static pressure rotary workbench mounting base; the center shaft is sleeved with the double-row cylindrical roller bearings; an inner hole of the double-row cylindrical roller bearings and the center shaft matched with the inner hole both have tapers; the shrink ring is installed on the center shaft; the circumference of the shrink ring is sleeved with the annular base plate; the thrust ball bearing is arranged on the annular base plate; the bearing glandis installed on the shrink ring and the thrust ball bearing; the angle encoder is installed on the bearing gland; the gland is installed on the upper end face of the workbench; and the connection board is connected with an output shaft of the angle encoder and the gland. The precision centering anti-tilting device with the static pressure rotary workbench is compact in structure, simple and reasonable in design, remarkable in anti-tilting effect, and capable of reducing the positioning errors and improving the positioning precision and rotation accuracy.

Description

technical field [0001] The invention relates to the technical field of rotary table devices used in machine tools, in particular to a precision centering anti-tilt device for a static pressure rotary table. Background technique [0002] The CNC static pressure rotary table in the machine tool industry at home and abroad generally adopts a bearing support structure or a static pressure oil floating structure. The static pressure oil floating structure rotary table has many advantages such as heavy load, low cost, good rigidity, and no wear, but there are also some Disadvantages: Since the table is suspended by the hydrostatic oil, when the workpiece is placed on one side of the hydrostatic rotary table, the heavy load will cause the table to tilt. In addition, since the establishment and release of hydrostatic oil pressure will cause the table to move up and down, it is difficult to ensure that the center of the table is in a fixed position. As a result, an error is generate...

AI Technical Summary

Problems solved by technology

In the above-mentioned rotary table device, there are defects in the position deviation caused by the inclination of the table surface caused by the load and the ups and downs of the table surface caused by the establishment and release of its own hydrostatic oil pressure, which directly affects the processing. The precision and reliability of the product make the quality of the product unable to meet the requirements

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