Development of an original electromagnetic damping-controlled horizontal cutting mechanism for microwire-EDM

5Citations
Citations of this article
9Readers
Mendeley users who have this article in their library.
Get full text

Abstract

In this study, an original ‘electromagnetic damping-controlled horizontal cutting mechanism’ is designed and proposed for precisely controlling micro-scale wire-tension for cutting a microstructure array. The electromagnetic damper uses a set of three annular electromagnets equally distributed with their end-faces orientated toward a mild-steel disc. This arrangement is located at the front of the cutting mechanism. The cutting mechanism also consists of a set of microgroove rollers, a wire-electrode guide, and an auxiliary guide designed to suppress wire-wriggling and wire-swaying in order to deliver a tungsten wire of Ø13 μm diameter at a steady state over the long-term. Experimental verification is conducted on B-NPD (boron-doped nano-polycrystalline diamond), which possesses a high melting-point and high electrical resistivity characteristics, to establish the feasibility of cutting such difficult-to-machine materials. A 'one-cut one-skim' machining approach is used whereby the surface flatness and the dimensional accuracy of the slot-wall can be improved. Experimental results found that the wire feed-rate during the finish-cutting stage can be used at a rate greater than that of the rough-cutting stage. The resultant diamond microstructure array is of high-consistency and aspect-ratio at 1:22, demonstrating that the electromagnetic damping-controlled horizontal cutting mechanism can precisely and stably control the tension and running speed of the microwire.

Cite

CITATION STYLE

APA

Chen, S. T., Huang, L. W., Kuo, J. P., & Pai, T. C. (2020). Development of an original electromagnetic damping-controlled horizontal cutting mechanism for microwire-EDM. Journal of Materials Processing Technology, 278. https://doi.org/10.1016/j.jmatprotec.2019.116538

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free