Loading…

Influence of ultrasonic vibration on micro-extrusion

► We examine the influence of ultrasonic vibration on deformation behavior of microparts. ► Ultrasonic vibration cause forming load to decrease. ► Surface of microformed part improves with ultrasonic micro-extrusion. Micro-forming is a miniaturization technology with great potential for high product...

Full description

Saved in:
Bibliographic Details
Published in:Ultrasonics 2011-07, Vol.51 (5), p.606-616
Main Authors: Bunget, Cristina, Ngaile, Gracious
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:► We examine the influence of ultrasonic vibration on deformation behavior of microparts. ► Ultrasonic vibration cause forming load to decrease. ► Surface of microformed part improves with ultrasonic micro-extrusion. Micro-forming is a miniaturization technology with great potential for high productivity. Some technical challenges, however, need to be addressed before micro-forming becomes a commercially viable manufacturing process. These challenges include severe tribological conditions, difficulty in achieving desired tolerances, and short tool-life due to inability of available die materials to withstand the forces exerted on miniature dies and punches. Some of these problems can be mitigated using ultrasonic technology. The principal objectives of this work were to investigate the possibility of applying ultrasonic vibrations in the micro-forming process, to design a set of tooling for ultrasonic micro-extrusion and to observe experimentally how ultrasonic oscillations influences the forming load and the surface finish. The test results showed a significant drop on the forming load when ultrasonic vibrations were imposed, and also a significant improvement in the surface of the micro-formed parts. Based on the preliminary test results, the study demonstrated high potential for using ultrasonic oscillations as a way to overcome the difficulties brought by the miniaturization.
ISSN:0041-624X
1874-9968
DOI:10.1016/j.ultras.2011.01.001