Ultrasonic vibration cutting tool

Abstract

The ultrasonic vibration cutting tool claimed in the present invention includes an ultrasonic transducer, an elliptical vibration mode converter and a blade, the elliptical vibration mode converter is respectively connected with the ultrasonic transducer and the blade, and the ultrasonic The transducer can drive the blade to vibrate longitudinally through the elliptical vibration mode converter; the elliptical vibration mode converter is arranged as a columnar structure, wherein the elliptical vibration mode converter is provided with slots, so The slot is arranged asymmetrically with respect to the elliptical vibration mode converter, so that when the ultrasonic transducer drives the blade to vibrate longitudinally through the elliptical vibration mode converter, the elliptical vibration mode converts The device can generate bending vibrations, and the longitudinal vibrations and the bending vibrations can be combined and formed into elliptical vibrations. The invention uses the ultrasonic transducer to drive the blade to realize elliptical vibration, so as to realize the drive to form an elliptical motion track at the end of the blade.

Description

technical field [0001] The invention belongs to the technical field related to ultrasonic vibration cutting, in particular to an ultrasonic vibration cutting tool. Background technique [0002] Viscous materials such as rubber, solid chemical products, elastic materials such as candy and cakes, and hard fibers such as carbon fiber and fiber cloth are prone to deformation during cutting, damaging the material surface, severe tool wear, and poor quality of the cutting end face. The existing ultrasonic cutting tool is driven by the ultrasonic transducer, so that the blade itself vibrates in one direction from the root to the blade. This ultrasonic cutting tool mainly uses the high heat generated when the blade contacts the material to be cut. Heat and even melt while cutting. Due to the limitation of the size of the tool, the vibration amplitude of the blade of the wide cutter is limited. Excessive vibration in one direction will cause damage to the tool itself, and it is pron...

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Problems solved by technology

However, in the above scheme, the vibration amplitude of the blade of the sheet tool is limited. Excessive vibration amplitude will cause the blade to break and produce a gap, which not only limits the vibration linear velocity of the blade, but also affects the life of the blade.

Or as disclosed in another Chinese patent, an ultrasonic elliptical vibration milling toolholder device (application number: 2013100765282), and specifically discloses that two groups of piezoelectric ceramics distributed in different positions are used, respectively equipped with excitation sources, and finally the The vibrations with a certain phase difference generated by two groups of piezoelectric ceramics are synthesized to realize elliptical vibration. The above scheme realizes elliptical vibration drive. However, the vibration system and control system in the ultrasonic elliptical vibration milling tool holder device are complex and difficult to control. Large size, complex equipment process, and unstable performance, which restrict the application and promotion of ultrasonic elliptical vibration transducers in industrial production

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