Next Article in Journal
Land Cover Classification Using a KOMPSAT-3A Multi-Spectral Satellite Image
Next Article in Special Issue
PSO-Based Voltage Control Strategy for Loadability Enhancement in Smart Power Grids
Previous Article in Journal
Advanced Microbubbles as a Multifunctional Platform Combining Imaging and Therapy
Article Menu

Export Article

Open AccessArticle
Appl. Sci. 2016, 6(11), 373; doi:10.3390/app6110373

The Machining of Hard Mold Steel by Ultrasonic Assisted End Milling

Department of Mechanical Engineering, National CHIN-YI University of Technology, Taichung 41170, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Chien-Hung Liu
Received: 18 October 2016 / Revised: 15 November 2016 / Accepted: 16 November 2016 / Published: 21 November 2016
(This article belongs to the Special Issue Selected Papers from the 2016 International Conference on Inventions)
View Full-Text   |   Download PDF [10210 KB, uploaded 21 November 2016]   |  

Abstract

This study describes the use of ultrasonic-assisted end milling to improve the quality of the machined surface of hard Stavax (modified AISI 420) mold steel and to reduce the amount of work involved in the final polishing process. The effects of input voltage, the stretch length and cutter holding force on the amplitude of the ultrasonic vibration used were measured. The effect of ultrasonic frequency (25 and 50 kHz) and amplitude (0, 2.20 and 3.68 μm) as well as the effect of the rake angle (6° and −6°) and the cutter helix angle (25°, 35° and 45°) on tool wear and quality of the workpiece surface finish were also investigated. It was found that the ultrasonic amplitude increased with cutter stretch length and input voltage, as expected. The amplitude remained constant when the cutter holding force exceeded 15 N. The experimental results showed that the ultrasonic amplitude had an optimum value with respect to surface finish. However, large amplitude ultrasonics did not necessarily improve quality. Furthermore, the cutters used for ultrasonic-assisted milling show less wear than those used for normal milling. It was also found that a positive rake angle and cutters with a large helix angle gave a better surface finish. View Full-Text
Keywords: hard mold steel; ultrasonic; end milling hard mold steel; ultrasonic; end milling
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Tsai, M.Y.; Chang, C.T.; Ho, J.K. The Machining of Hard Mold Steel by Ultrasonic Assisted End Milling. Appl. Sci. 2016, 6, 373.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top