Vibrator Development for Hole Machining by Ultrasonic Longitudinal and Torsional Vibration

Asami, Tohru; Miura, Hiroyuki

doi:10.1143/jjap.50.07he31

Cited by 19 publications

(8 citation statements)

References 17 publications

(16 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5. Longitudinal-torsional vibration device with diagonal slits (ultrasonic horn with diagonal slits): 10 the resonance frequency equation presented by Lin 11 can be regarded as design theoretical basis in the same frequency. J Pi 12 derived the state of plane principal stress in diagonal slits with longitudinal stress wave reflecting principle to diagonal slit, and the resonance frequency equation was represented by means of the equivalent circuit.…”

Section: Longitudinal Torsion Push-pull Vibration Devicementioning

confidence: 99%

Study on a longitudinal–torsional ultrasonic vibration system with diagonal slits

Chen

Liu

et al. 2017

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The longitudinal–torsional ultrasonic vibration machining process is popular for machining hard and brittle materials. A longitudinal–torsional ultrasonic vibration system with diagonal slits was designed for the ultrasonic vibration machining process based on the principle of acoustics propagation in this study. Four uniform diagonal slits were cut off on the horn cylinder to transform the longitudinal ultrasonic vibration into a longitudinal–torsional composite motion. A finite element analysis was used to optimize the mechanical structure of the vibration system. Dynamic characteristics of the vibration system were numerically studied, and the relationship of diagonal slits versus the resonance frequency and amplitudes of longitudinal–torsional vibration was analyzed, so that the longitudinal–torsional output amplitude can be optimized by rational choice of structure parameters of diagonal slits. Moreover, the movement locus of the system output end was obtained by utilizing the Origin software, which was proved to be elliptical, and the accuracy of the finite element model was confirmed by comparing numerically and experimentally determined resonant characteristics. In addition, the verification of longitudinal–torsional ultrasonic vibration was proved for the designed ultrasonic vibration system.

show abstract

Section: Longitudinal Torsion Push-pull Vibration Devicementioning

confidence: 99%

Study on a longitudinal–torsional ultrasonic vibration system with diagonal slits

Chen

Liu

et al. 2017

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…However, most of the longitudinal-torsional transducers studied so far have the defect of the node planes of the longitudinal eigenmode and torsional eigenmode being at different positions on the transducer. 21–26 The node plane is the plane that can stay motionlessly all the time when the transducer is working. The misalignment of node planes may influence the output of L-T transducers.…”

Section: Introductionmentioning

confidence: 99%

Innovative design and analysis of a longitudinal-torsional transducer with the shared node plane applied for ultrasonic assisted milling

Chen

Cheng

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

This paper presents an innovative design and development of a longitudinal-torsional ultrasonic vibration transducer. This longitudinal-torsional ultrasonic vibration transducer can be stimulated up by one group of longitudinal piezoelectric ceramics and it has a shared longitudinal and torsional vibration node plane. The longitudinal-torsional ultrasonic vibration transducer consists of two amplitude horns, a mounting flange, and four pieces of axially poled piezoelectric ceramics. Theoretical analysis and formulation of the share vibration node have been studied, which are used to guide the design of the transducer. Five helical grooves are cut off along the circumference of the amplitude horn so as to convert the longitudinal vibration to both longitudinal and torsional vibration at the same time. Simulations have confirmed that each longitudinal-torsional vibration mode has one shared node on the transducer. The vibration amplitude is measured by a laser displacement sensor and the largest longitudinal displacement of longitudinal-torsional ultrasonic vibration transducer reaches 6 µm and torsional displacement reaches 11 mrad when 500Vpp voltage is applied on the transducer. Ultrasonic vibration milling experiments have shown that the longitudinal-torsional ultrasonic vibration transducer has played a great role in the cutting process as the longitudinal-torsional ultrasonic vibration milling decreases the cutting force substantially compared to the convention milling operations.

show abstract

“…It consists of a bolt-clamped Langevintype transducer (D45520, NGK), an exponential horn for displacement amplification (length: 155 mm; large-end diameter: 55 mm; small-end diameter: 12 mm; amplification factor: about 4.6; material: duralumin), and a complex vibration horn with diagonal slits and a welding tip. Figure 2 shows a schematic diagram of the complex vibration horn with diagonal slits [14,15]. Here, the horizontal axis indicates the measurement position in the x direction.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic welding of dissimilar metals by vibration with planar locus

Asami

Miura

2015

Acoust. Sci. & Tech.

Self Cite

View full text Add to dashboard Cite

A linear vibration locus is conventionally used in ultrasonic metal welding. We have previously proposed the use of a nondirectional planar vibration locus as a means of improving the overall and orientation-dependent weld strength compared with the case of using a linear vibration locus. In this study, experiments in which a copper plate and an aluminum plate were used as welding targets were conducted and the weld strength under various conditions was measured to assess the welding characteristics. We found that for a short welding time, the strength of a weld produced using a planar vibration locus was 1.7-fold that produced using a linear vibration locus. We attribute this result to the aluminum plate vibrating more easily, and thus creating stronger vibrations at the interface between the copper and aluminum plates, when we used the nondirectional planar locus.

show abstract

Vibrator Development for Hole Machining by Ultrasonic Longitudinal and Torsional Vibration

Cited by 19 publications

References 17 publications

Study on a longitudinal–torsional ultrasonic vibration system with diagonal slits

Study on a longitudinal–torsional ultrasonic vibration system with diagonal slits

Innovative design and analysis of a longitudinal-torsional transducer with the shared node plane applied for ultrasonic assisted milling

Ultrasonic welding of dissimilar metals by vibration with planar locus

Contact Info

Product

Resources

About