Spindle box for numerically-controlled machine tool, and forming die thereof

Abstract

The invention belongs to the technical field of machine tool equipment, and especially relates to a spindle box for a numerically-controlled machine tool, and a forming die thereof. The spindle box isslidably arranged on a sliding rail on a machine tool stand column in the vertical direction and comprises a box body, a spindle, a ram and a sliding seat, wherein the spindle is arranged in the boxbody; the ram is arranged at one side of the box body and slidably arranged on the sliding seat in the horizontal direction; and the sliding seat is slidably arranged on the sliding rail. The spindlebox further comprises a dynamic adjusting mechanism used for adjusting deflection deformation, caused by gravity center changes, of the ram and the box body in real time when the ram and the box bodyare overhung. After the box body moves forwards, the front side of the box body tends to incline downwards, the phenomenon can cause a downward external force borne by a first base body and a second base body to incline forwards, and a dynamic adjusting mechanism used for applying upward thrust to the box body to enable the box body to be balanced is arranged according to the change of the external force.

Description

technical field [0001] The invention belongs to the technical field of machine tool equipment, and in particular relates to a spindle box for a numerically controlled machine tool and a molding die thereof. Background technique [0002] The spindle box is an important part of the machine tool, which is used to arrange the working spindle of the machine tool and its transmission parts and corresponding additional mechanisms. During the movement of the spindle box, the front end of the spindle will often sag due to the change of the center of gravity, which will affect the dynamic performance of the machine tool and the machining accuracy of the parts. [0003] At present, many machine tool designs use front-end balance oil cylinders. One or two balance oil cylinders are arranged at the front end of the column to lift the spindle box and overcome the deformation of the spindle group due to gravity. For example, the Chinese invention patent with the publication number CN 10191...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned existing technical problems and provide a spindle box for CNC machine tools to overcome the stress concentration caused by the change of the center of gravity of the spindle assembly during the movement of the spindle box, and to perform real-time dynamic analysis of the stress and deformation generated by the spindle box. Compensation, thereby improving the machining accuracy of the machine tool; and also providing a forming die for processing the headstock, which can reduce casting defects, improve the pass rate of the casting blank of the box body, and can also reduce investment and cost

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