Vertical rotary workbench of numerical control machine tool

Abstract

The invention provides a vertical rotary workbench of a numerical control machine tool with accurate positioning. The vertical rotary workbench comprises a base, a rotating shaft, a workbench and a rotary driving device, wherein the rotating shaft is rotationally arranged on the base; the workbench is fixedly arranged at the top of the rotating shaft; the rotary driving device is arranged betweenthe base and the rotating shaft and used for driving the workbench to rotate; the base is provided with one to four scale division positioning devices; and the lower surface of the workbench is provided with two to eight taper pin sleeves of corresponding scale division angles, and the taper pin sleeves are uniformly distributed along the circumference direction of the workbench.

Description

technical field [0001] The invention relates to a numerical control machine tool, in particular to a vertical rotary workbench of the numerical control machine tool. Background technique [0002] refer to figure 1 , the known vertical rotary table for CNC machine tools generally includes a base 1', a vertical rotary table and a rotary drive device, the base 1' is used to fix and support the vertical rotary table and the rotary drive device, the vertical The rotary table includes a rotating shaft 2' and a table 3', the rotating shaft 2' is rotatably arranged on the base 1' through a bearing, the table 3' is arranged on the top of the rotating shaft 2', and the rotary drive device includes a drive motor 4' reducer 5' drive wheel 6' and driven wheel 7', the drive motor 4' is located on the base 1', the input end of the reducer 5' is connected to the output end of the drive motor 4', the reducer 5 The output end of ' is connected with the driving wheel 6' through the transmiss...

AI Technical Summary

Problems solved by technology

The disadvantage of this known vertical rotary table for numerically controlled machine tools is that the rotation and positioning of the rotary table in the circumferential direction depend on the drive of the driving wheel 6' and the driven wheel 7', while the rotation angle of the motor, the driving wheel 6' and the driven wheel 7' will affect the positioning of the rotary table along the circumferential direction due to the gap error of the gear pair during the meshing transmission process, resulting in inaccurate positioning of the workpiece on the rotary table, and the machining accuracy of the workpiece cannot be guaranteed. This is the shortcoming of the existing CNC machine tool vertical rotary table

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