Title: Modelling of the micro-grinding process considering the grinding tool topography

Authors: Mohammadali Kadivar; Ali Zahedi; Bahman Azarhoushang; Peter Krajnik

Addresses: Institute for Precision Machining (KSF), Hochschule Furtwangen University, Jakob-Kienzle-Str.17, 78054, Villingen-Schwenningen, Germany; Department of Materials and Manufacturing Technology, Chalmers University of Technology, Hörsalsvägen 7B, 412 96 Gothenburg, Sweden ' Institute for Precision Machining (KSF), Hochschule Furtwangen University, Jakob-Kienzle-Str.17, 78054, Villingen-Schwenningen, Germany ' Institute for Precision Machining (KSF), Hochschule Furtwangen University, Jakob-Kienzle-Str.17, 78054, Villingen-Schwenningen, Germany ' Department of Materials and Manufacturing Technology, Chalmers University of Technology, Hörsalsvägen 7B, 412 96 Gothenburg, Sweden

Abstract: The micro topography of the grinding tool has a considerable influence on the cutting forces and temperature as well as the tool wear. This paper addresses an analytical modelling of the micro-grinding process based on the real tool topography and kinematic modelling of the cutting-edgeworkpiece interactions. An approximate shape of the abrasive grains and their distribution is obtained from the confocal images, which are taken from the tool surface - determining the grain height protrusion and the probability density function of the grains. To determine the grinding forces, a transient kinematic approach is developed. In this method, the individual grit interaction with the workpiece is extended to the whole cutting zone in the peripheral flank grinding operation. Hence a predictive model of cutting forces and surface roughness in micro grinding of titanium grade 5 is developed. Finally, the simulated forces and surface roughness are validated by the experimental results.

Keywords: single-grain interaction; micro grinding; diamond grinding pin; grinding pin topology.

DOI: 10.1504/IJAT.2017.089292

International Journal of Abrasive Technology, 2017 Vol.8 No.2, pp.157 - 170

Received: 27 Mar 2017
Accepted: 03 Sep 2017
Published online: 14 Jan 2018 *

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