Title:
OSCILLATION EXCITATION METHOD FOR LANGEVIN ULTRASONIC TRANSDUCER, ULTRASONIC MACHINING METHOD, AND ULTRASONIC TRANSMISSION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/065263
Kind Code:
A1
Abstract:
[Problem] To provide a method for exciting ultrasonic oscillation for back-and-forth motion in a novel oscillation mode using a Langevin ultrasonic transducer, an ultrasonic machining method using this novel ultrasonic oscillation, and an ultrasonic transmission method.
[Solution] Provided is a method wherein: a Langevin ultrasonic transducer is prepared that includes a metal block, a metal block provided with a support framework protruding in a ring shape on side surfaces, and a poled piezoelectric element affixed between these metal blocks; the ultrasonic transducer is connected to a base via the support framework and supported in a restrained state; and then voltage having a prescribed frequency is applied to the piezoelectric element in the ultrasonic transducer, thereby exciting, in the ultrasonic transducer, ultrasonic oscillation for back-and-forth motion without holding an oscillation node within an oscillator in a direction perpendicular to a flat surface of the piezoelectric element. Also provided are an ultrasonic machining method and ultrasonic transmission method using this oscillation excitation method for an ultrasonic transducer.
Inventors:
OHNISHI KAZUMASA (JP)
Application Number:
PCT/JP2016/080514
Publication Date:
April 20, 2017
Filing Date:
October 14, 2016
Export Citation:
Assignee:
UWAVE CO LTD (JP)
International Classes:
B06B1/06
Domestic Patent References:
| WO2010087282A1 | 2010-08-05 |
Foreign References:
| JP2001179179A | 2001-07-03 | |||
| JP2012105099A | 2012-05-31 |
Other References:
See also references of EP 3363548A4
Attorney, Agent or Firm:
YANAGAWA, Yasuo (JP)
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