Spindle box for CNC machine tool and forming mold thereof

Abstract

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. The spindle box is slidably arranged on a slide rail on a machine column along a vertical direction. The spindle box includes a box body, a spindle, A ram and a sliding seat, the main shaft is arranged in the box, the ram is arranged on one side of the box and is slidably arranged on the sliding seat along the horizontal direction, and the sliding seat is slidably arranged on the On the slide rail, wherein the headstock also includes a dynamic adjustment mechanism for real-time adjustment of the deflection deformation of the ram and the box due to the change of the center of gravity when the ram and the box are overhanging; After the box moves forward, the front side of the box will have a tendency to tilt downward. This phenomenon will cause the downward external force on the first seat and the second seat to lean forward. For the change of the external force, the This arrangement has a dynamic adjustment mechanism for exerting an upward thrust on the case to bring the case into balance.

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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