Induction type ultrasound electric principal shaft

Abstract

The present invention discloses a induction type ultrasound electric principal shaft, which is composed of two parts: the rear part being an electric principal shaft and the front part being a ultrasound vibration system, electromagnetic field interference between the two parts being insulated by a shield ring, the motor making the principal shaft to rotate in high speed; the ultrasound vibration system is composed of an ultrasound transducer, a amplitude-variation lever and a tool head, and generates an axial ultrasound vibration of the principal shaft; an ultrasound driving signal is transmitted between a ultrasonic transmitter and a ultrasonic receiver with induction mode, wherein the non-contact type transmission signal being capable of omitting electrical brush, avoiding brush wear, reducing heating and improving greatly the rotary speed of the principal shaft; the principal shaft is supporting by a fore bearing, a middle bearing and a rear bearing, therefore the stiffness and rotating accuracy of the principal shaft can be improved, and the fore bearing is supported on the wave node point of the ultrasound vibration system, thus the vibration can be reduced; water-sealing covers are packed outside the motor and the ultrasound signal transmission system, and the cooled water ensures the principal shaft to be used in normal temperature all the time.

Description

technical field [0001] The present invention relates to an ultrasonic spindle, and more specifically, the present invention relates to an inductive ultrasonic electric spindle capable of realizing non-contact transmission. Background technique [0002] Ultrasonic composite machining technology is one of the most suitable processing methods for processing hard and brittle materials, and the ultrasonic spindle is the key core component of the ultrasonic composite machining machine tool. The traditional ultrasonic spindle is generally powered by a brush, and its heat generation, wear, and low A series of problems such as precision make it difficult to popularize ultrasonic composite machining in actual production. Most of the existing machine tools use an independent motor to drive the ultrasonic spindle, which has defects such as many power transmission links, low speed, bulky volume, and low reliability. [0003] The invention combines the advantages of the electric spindle ...

AI Technical Summary

Problems solved by technology

[0002] Ultrasonic composite machining technology is one of the most suitable processing methods for processing hard and brittle materials, and the ultrasonic spindle is the key core component of the ultrasonic composite machining machine tool. The traditional ultrasonic spindle is generally powered by a brush, and its heat generation, wear, and low A series of problems such as precision make it difficult to popularize ultrasonic composite machining in actual production

Most of the existing machine tools use an independent motor to drive the ultrasonic spindle, which has defects such as many power transmission links, low speed, bulky volume, and low reliability.

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