Separated super-magnetostrictive telescopic rotary ultrasonic vibration head

Abstract

The invention discloses a separated super-magnetostrictive telescopic rotary ultrasonic vibration head which comprises a cutter handle, a variable amplitude rod, a cutter, a permanent magnet body, a super-magnetostrictive telescopic rod, a first magnetic conduction piece and a second magnetic conduction piece, a coil and a coil support; the super-magnetostrictive telescopic rod is sleeved on the permanent magnetic body and coaxial with the permanent magnetic body; a filling gap is formed between the super-magnetostrictive telescopic rod and the permanent magnetic body; the coil is sleeved on the super-magnetostrictive telescopic rod; ultrasonic alternating current is fed into the coil to generate an alternating magnetic field so as to drive the super-magnetostrictive telescopic rod to generate ultrasonic longitudinal vibration; and the coil support is arranged on the periphery of the coil for installing the coil. According to the ultrasonic vibration head provided by the embodiment of the invention, the coil and the cutter handle are separated, so that the energy transmission efficiency is improved while the non-contact transmission of ultrasonic energy is realized, and the output power and the output amplitude are increased under the same conditions.

Description

technical field [0001] The invention relates to the technical field of ultrasonic precision machining, in particular to a separated giant magnetostrictive rotating ultrasonic vibration head. Background technique [0002] In the design and manufacture of rotary ultrasonic processing equipment, the commonly used method is to use piezoelectric ceramic sheets as electrical-mechanical energy conversion elements, and use conductive slip rings between the ultrasonic generator and piezoelectric ceramic transducers to transfer electrical energy from The stationary part (sonicator) transmits out to the rotating part (piezo transducer). The main disadvantages of using conductive slip rings are: (1) the sliding wear of the slip ring is fast, the service life is short, and it needs to be replaced frequently, and the replacement is troublesome; (2) the wire of the slip ring is exposed, easy to catch fire, and has a certain (3) The speed of the slip ring should not be too high, which limi...

AI Technical Summary

Problems solved by technology

The main disadvantages of using conductive slip rings are: (1) the sliding wear of the slip ring is fast, the service life is short, and it needs to be replaced frequently, and the replacement is troublesome; (2) the wire of the slip ring is exposed, easy to catch fire, and has a certain (3) The speed of the slip ring should not be too high, which limits the speed of the spindle, which is not good for the application environment of high speed

At present, there is no giant magnetostrictive transducer designed for rotary ultrasonic machining. The common design form has many unreasonable features for rotary ultrasonic machining. For example, the coil that generates the alternating magnetic field is designed as one with the giant magnetostrictive rod. , conductive slip rings still need to be used in rotating applications; and if the structural design is unfavorable to the integration of tool holders, a large change is required before it can be applied to rotating ultrasonic machining

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