Static pressure working platform for hobbing machine

Abstract

The invention discloses a static pressure working platform for a hobbing machine. The static pressure working platform comprises a working platform seat, a centering outer cone arranged on the working platform seat, a centering inner cone sleeve, a worm gear coaxially and fixedly connected with the centering inner cone sleeve, a working platform body fixedly arranged on the end face of the worm gear, and a worm transmission mechanism matched with the worm gear; wherein a first static pressure guide rail matched with the lower end face of the centering inner cone sleeve is arranged on the working platform body; and a second static pressure guide rail matched with the upper end face of the centering inner cone sleeve is arranged on the upper end face of the centering outer cone. According to the static pressure working platform, a static pressure bearing structure is used for supporting the working platform body, a cone static pressure bearing structure is used for positioning the rotation center of the working platform body, the static pressure bearing structure has the advantages of excellent rigidity, large bearing force, and uneasiness in damage, thus the working requirement of the hobbing machine can be met, the highly repeated rotation precision of the working platform body is guaranteed, and a working platform is enabled to be free of maintenance in a long period; and according to a damping worm, the transmission gap of a worm gear and worm transmission pair is eliminated, the precision of scale division is improved, and the improvement of the processing precision of a gear is facilitated.

Description

technical field [0001] The invention relates to a gear hobbing machine, in particular to a working table of the gear hobbing machine. Background technique [0002] The original gear hobbing machine table body is centered by conical bearings or rolling bearings, the end bearing bears the load, or the rolling bearing is centered, and the unloading bearing bears the load. Because the table body of the gear hobbing machine is subjected to intermittent and periodic cutting loads, the axial load is large, and the overturning moment (tilting moment) applied to the table body is relatively large. The accuracy and rigidity of the guide rail surface for centering the worktable body and bearing the load are very high. Ordinary bearings do not have a long service life, require frequent maintenance, and are inconvenient to disassemble. Some also use hydrostatic bearings for centering or hydrostatic guide rails. The static pressure surface is hard surface contact such as steel-steel, ca...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a static pressure workbench for gear hobbing machines to solve the problems of poor bearing capacity and low transmission precision existing in the existing workbenches for gear hobbing machines

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