Motorized spindle of aerostatic bearing

Abstract

The invention belongs to the field of machining, relates to a machining device and discloses a motorized spindle of an aerostatic bearing. The motorized spindle comprises a main component, a front bearing component, a rear bearing component, a thrust bearing, a stator component, a rotor component, a water / gas circuit sleeve component and an air cylinder component; the front bearing component is arranged at the front end of the main component and extend into the same to be flush with the outer edge of the main component, the front end of the front bearing component is connected with the rotor component which is externally connected with the thrush component, and a thrust clearance ring is arranged between the thrust bearing and the front bearing component; the front bearing component is backwardly connected with the stator component in a main component cavity, the rear end of the stator component is connected with the rear bearing component in the main component cavity, the narrower front part of the water / gas circuit sleeve component extends into the main component cavity to be connected with the rear bearing component while the rear end of the water / gas circuit sleeve component is connected with the air cylinder component, and the rear end of the air cylinder component is provided with a screw penetratingly connected with the air cylinder component. The motorized spindle is high in rotation speed, good in stability and high in machining precision.

Description

technical field [0001] The invention belongs to the field of mechanical processing and relates to an electric spindle. Background technique [0002] At present, as the diameter of the aperture that needs to be processed on the PCB motherboard is getting smaller and smaller, the density is getting higher and higher, the requirements for machining accuracy are getting higher and higher, and the requirements for the speed and accuracy of the electric spindle are becoming more and more strict. The traditional electric spindle bearings The line speed is slow and the roundness of the ball is poor, which leads to the vibration of the electric spindle at high speed, which affects the machining accuracy. Contents of the invention [0003] The purpose of the present invention is to provide an electric spindle with air static pressure bearing, which can make up for the shortcomings of the existing problems and realize high stability of the electric spindle when it runs at high speed....

AI Technical Summary

Problems solved by technology

[0002] At present, as the diameter of the hole that needs to be processed on the PCB main board is getting smaller and smaller, the density is getting higher and higher, the requirements for machining accuracy are getting higher and higher, and the requirements for the speed and accuracy of the electric spindle are becoming more and more strict. Traditional electric spindle bearings The line speed is slow and the roundness of the ball is poor, which leads to the vibration of the electric spindle at high speed, which affects the machining accuracy.

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