Title: Relevance of laser touch-dressed diamond tools for the dressing performance of vitrified-bonded silicon carbide wheels

Authors: Robert Transchel; Claus Dold; Mohammad Rabiey; Konrad Wegener

Addresses: ETH Zurich, Institute of Machine Tools and Manufacturing, Tannenstrasse 3, 8092 Zurich, Switzerland. ' Inspire AG, Technoparkstrasse 1, 8003 Zurich, Switzerland. ' ABB Turbo Systems AG, Bruggerstrasse 71a, 5400 Baden, Switzerland. ' ETH Zurich, Institute of Machine Tools and Manufacturing, Tannenstrasse 3, 8092 Zurich, Switzerland

Abstract: Touch dressing of electroplated diamond grinding and dressing tools enable the generation of well-defined profile modifications and grain protrusions. This paper contributes to the utilisation of ultra-short pulse laser in touch dressing technology and outlines the cutting performance of laser touch-dressed diamond tools in dressing operations of vitrified-bonded silicon carbide. Surfaces of abrasive diamond tools are cut using a picoseconds laser beam to generate a well-defined grain protrusion without thermal damage of either the nickel matrix or the diamond structure. Irradiation parameters were systematically varied in order to determine a process window. Dressing operations were carried out using conventional and laser touch-dressed dressing tools. Lower dressing forces and higher dressing force ratios outline the advantage of the laser touch-dressed diamond tools in terms of material removal efficiency. Additionally, no remarkable differences in wear progression of conventional and laser touch-dressed diamond tools were observed. Furthermore, the laser touch-dressing model is presented using stochastically-distributed grain morphologies.

Keywords: laser touch dressing; LTD; electroplated diamond grinding tools; superabrasives; laser truing; vitrified-bonded silicon carbide; grinding wheels; grinding wheel dressing; material removal rate; MRR; grinding wheel wear.

DOI: 10.1504/IJAT.2012.046828

International Journal of Abrasive Technology, 2012 Vol.5 No.1, pp.48 - 61

Received: 19 Nov 2011
Accepted: 12 Feb 2012
Published online: 30 Jul 2014 *

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