Title: Performance of micro-grinding pins with different bonding while micro-grinding Si₃N₄

Authors: Serge Shamray; Mohammadali Kadivar; Amir Daneshi; Bahman Azarhoushang

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

Abstract: Selection of a grinding tool with proper specification and bond material is a major challenge in the field of micro/grinding process. In this fundamental study, four different types of diamond micro-grinding pins were used. The bond types were varied and their effects on the grinding forces and surface roughness were analysed. In the experimental study, the microtopography of the grinding tool, cutting speed and depth of cut were considered as input process parameters as well as the bond. The results revealed that forces and surface roughness are highly influenced by the tool topography. Using vitrified micro-grinding pin resulted in lower grinding forces (up to 40%) than other types. The tool wear increased with the material removal when using metal bonded grinding tool. Nevertheless, vitrified grinding tool was exposed to the self-sharpening - lowering the forces. The hybrid bond tool was the most stable tool during the grinding process - keeping the forces and surface roughness almost in the same order over the time, despite higher induced cutting forces.

Keywords: micro-grinding; Si₃N₄; bond type; tool specification; tool microtopography; surface quality; grinding forces.

DOI: 10.1504/IJAT.2020.109612

International Journal of Abrasive Technology, 2020 Vol.10 No.1, pp.16 - 31

Received: 12 Jun 2019
Accepted: 06 May 2020
Published online: 16 Sep 2020 *

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