Direct-drive motorized spindle of lathe

Abstract

The invention disclose a direct-drive motorized spindle of a lathe, and the direct-drive motorized spindle comprises a spindle, a rotor, a stator, a box body, a front bearing component and a rear bearing component, wherein the spindle is supported on the box body through the front bearing component and the rear bearing component, the rotor is assembled at the middle part of the spindle, the stator is hollow-sheathed outside the rotor, a heat radiation sleeve is assembled in the box body, the stator is fixed in the heat radiation sleeve, and the front bearing component is sheathed at the frontend of the heat radiation sleeve through a linear bearing. The direct-drive motorized spindle of the lathe has the advantages of being simple and compact in structure, being convenient to assemble, being convenient to maintain and being easy to ensure precision of repeated assembly.

Description

technical field [0001] The invention relates to a lathe spindle structure, in particular to a lathe direct drive electric spindle. Background technique [0002] Most of the existing lathe spindles adopt a belt drive structure, which takes up a lot of space and has a complex structure. When rotating at high speed, it vibrates greatly, generates high noise, and affects machining accuracy. A small number of lathe spindles adopt the electric spindle structure. On the one hand, the existing lathe electric spindles are difficult to reduce the radial size of the sleeve and cannot be directly placed in the lathe head box. On the other hand, they need to be equipped with special refrigeration systems and oil tanks (or water tanks). It takes up a lot of space; most importantly, it is inconvenient to replace bearings and maintain. Once repaired and reassembled, the original positioning reference will be lost, the coaxiality cannot be guaranteed, and the product repair accuracy is diffi...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing lathe spindles adopt a belt drive structure, which takes up a lot of space and has a complex structure. When rotating at high speed, it vibrates greatly, makes high noise, and affects machining accuracy.

A small number of lathe spindles adopt the electric spindle structure. On the one hand, the existing lathe electric spindles are difficult to reduce the radial size of the sleeve and cannot be directly placed in the lathe head box. On the other hand, they need to be equipped with special refrigeration systems and oil tanks (or water tanks). It takes up a lot of space; most importantly, it is inconvenient to replace bearings and maintain. Once repaired and reassembled, the original positioning reference will be lost, the coaxiality cannot be guaranteed, and the product repair accuracy is difficult to guarantee. After repair, the rotation accuracy of the electric spindle is significantly reduced, so Difficult to be accepted by users and difficult to promote in the market

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