Giant Magnetostrictive Rotary Ultrasonic Vibration Tool Holder

Abstract

The invention relates to a giant magnetostrictive rotary ultrasonic vibration knife handle and belongs to the technical field of ultrasonic precise special machining. The knife handle comprises an amplitude-change pole, a giant magnetostrictive ultrasonic transducer, a hollow knife handle body, an auxiliary side component, a primary side component and a threaded pressing block, wherein the giant magnetostrictive ultrasonic transducer is connected with the amplitude-change pole through a threaded rod and installed in a cavity in the lower portion of the knife handle body; an ultrasonic vibrator formed by connecting the giant magnetostrictive ultrasonic transducer with the amplitude-change pole makes contact with the inner wall of the knife handle body, the lower end of the giant magnetostrictive ultrasonic transducer is tightly pressed onto the knife handle body through the threaded pressing block, and the threaded pressing block is connected with the knife handle body through threads; the lower end of the amplitude-change pole is tightly pressed through the threaded pressing block, and the threaded pressing block is connected with the knife handle body; the lower end of the auxiliary side component is fixed to the knife handle body through a screw, and the primary side component is fixed to the end face of a machine tool spindle. According to the giant magnetostrictive rotary ultrasonic vibration knife handle, the problem of heating of the transducer is effectively solved by means of a giant magnetostrictive material of a slice structure and an air cooling system. By the adoption of the knife handle, the machining efficiency can be improved. In addition, the knife handle can be suitable for any knife handle connection standards.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic precision special processing, in particular to a rotating ultrasonic vibration tool holder based on giant magnetostrictive material (GMM). Background technique [0002] In the high-speed cutting of hard and brittle materials, the tool head rotates at high speed while adding ultrasonic mechanical vibration, which can reduce the cutting force, improve the processing quality and prolong the tool life. Relevant studies have shown that: within a certain range, increasing the ultrasonic power and increasing the ultrasonic amplitude can further reduce the cutting force and improve the processing efficiency. Therefore, the design of high-power rotary ultrasonic machining system has become the development trend of ultrasonic equipment. [0003] The ultrasonic tool holder is the core component of the rotary ultrasonic machining system. At present, there are two kinds of ultrasonic transducer materials c...

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Problems solved by technology

[0005] 1. In a high-frequency alternating electromagnetic field, energy dissipation such as eddy current loss, hysteresis loss, and mechanical loss causes a significant temperature rise in the giant magnetostrictive ultrasonic transducer, which seriously affects the stability of the output amplitude and the safety of long-term work sex

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