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research-article

Reliability based design optimization of surface-to-surface contact for cutting tool interface designs

[+] Author and Article Information
Soner Camuz

Maskingränd 2 Göteborg, Select One 41258 Sweden soner@chalmers.se

Magnus Bengtsson

Maskingränd 7a Goteborg, Select State/Province SE-412 96 Sweden magnus.bengtsson@chalmers.se

Rikard Söderberg

Product and Production Development PU Göteborg, Vastra gotaland SE 41296 Sweden rikard.soderberg@chalmers.se

Kristina Wärmefjord

Product and Production Development Göteborg, SE-41296 Sweden kristina.warmefjord@chalmers.se

1Corresponding author.

Manuscript received May 28, 2018; final manuscript received January 23, 2019; published online xx xx, xxxx. Assoc. Editor: Radu Pavel.

ASME doi:10.1115/1.4042787 History: Received May 28, 2018; Accepted January 24, 2019

Abstract

In recent year, cutting tool manufacturers are moving towards improving the robustness of the positioning of an insert in the tool body interface. Increasing the robustness of the interface involves designs with both chamfered and serrated surfaces. These designs have a tendency to over-determine the positioning and cause instabilities in the interface. Cutting forces generated from the machining process will also plastically deform the interface, consequently, altering the positioning of the insert. Current methodologies within positioning and variation simulation use point-based contacts and assume linear material behaviour. In this article, a first order reliability-based design optimization framework that allows robust positioning of surface-to-surface-based contacts is presented. Results show that the contact variation over the interface can be limited to pre-defined contact zones, consequently allowing successful positioning of inserts in early design phases of cutting tool designs.

Copyright © 2019 by ASME
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