Abstract

The improvement of the microgeometry became a subject of a great interest in cutting tools optimization. This paper approaches the process of cutting edge preparation of solid carbide reamers. It has been analyzed the evolution of cutting edge wear resistance in the material GGG 40 using the scanning electron microscope (SEM). The work also compared the rounded cutting edge reamers realized using wet abrasive jet machining with standard unprepared cutting edge. To obtain different microgeometries were experienced a number of machining strategies, which resulted in four combinations of roundness and forms for the cutting edge. In order to validate the results, the author studied the wear resistance during the reaming tests, the influence of prepared surface of the cutting edge on metallic coating layer adhesion. The final purpose was to determinate the optimal strategy of cutting edge preparation considering the evolution of wear during the reaming process.

Highlights

  • The main reason for cutting edge preparation is to determinate the increase in the durability of reamers corresponding to other studies of cutting tools in this field

  • This aspect leads to the realization of the research regarding the microgeometry optimization of the cutting edge to increase the stability and stiffness

  • Improving the adhesion of metal coatings on tool surface in cutting edge area [1], and extending the tool life in GGG-40 cast iron machining represents another benefit which motivates the effectuation of this paper

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Summary

Introduction

The main reason for cutting edge preparation is to determinate the increase in the durability of reamers corresponding to other studies of cutting tools in this field. This aspect leads to the realization of the research regarding the microgeometry optimization of the cutting edge to increase the stability and stiffness. The maximal durability can only be achieved through a combination of tool coating and adapted cutting edge microgeometry [5] For this test the reamers were coated with the new Signum coating developed by Gühring, which is one of the hardest nitride coatings on the market

Cutting edge preparation
Tool life test
Discussions about wear form and evolution
Findings
Conclusions
Full Text
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