Influence of End Mill Manufacturing on Cutting Edge Quality and Wear Behavior

Berend Denkena,Alexander Krödel-Worbes,Sascha Beblein,Markus Hein

doi:10.3390/jmmp5030077

Berend Denkena, Alexander Krödel-Worbes + Show 2 more

Open Access

https://doi.org/10.3390/jmmp5030077

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Abstract

One of the decisive factors for the performance of milling tools is the quality of the cutting edge. The latter results from the process control of the individual steps along the tool manufacturing process chain, which generally includes the sintering or pressing of the blanks, grinding, cutting edge preparation, and coating of the tools. However, the targeted and application-specific design of the process steps in terms of high economic efficiency is currently limited by a lack of knowledge regarding the influence of the corresponding process parameters on the resulting cutting edge quality. In addition, there is a lack of suitable parameters that adequately represent the characteristics of the cutting edge microtopography. This publication therefore investigates the influence of manufacturing processes on cutting edge quality and wear behavior of end mills. On this basis, different characterization parameters for the cutting edge quality are derived and evaluated with regard to their ability to predict the wear behavior.

Highlights

The orientation of the cutting vector during grinding of the circumferential flank face shows a significant influence on the cutting edge quality
Within the scope of this study, the influence of end mill manufacturing process on cutting edge chipping was analyzed, and a parameter was developed which describes the effect of the chipping on the application behavior
The process steps of tool manufacture were investigated with regard to their effect on the chipping and the microgeometry of the cutting edge

Summary

Introduction

The manufacturing of cutting tools, e.g., from carbide, is usually carried out with the process steps of sintering or pressing of the blank, grinding, edge preparation, and coating with pre- and posttreatment [1]. The carbide blanks produced in the sintering or pressing process exhibit dimensional and shape deviations due to the process-related shrinkage Their surfaces often do not meet the requirements of cutting tools [1]. There is insufficient knowledge regarding the interactions between the cutting edge chipping and the cutting material properties, process parameters, as well as the microand macro-geometry on the tool application behavior. This publication investigates the influence of the end mill manufacturing process chain on cutting edge chipping, and derives a parameter describing the influence of this on the wear behavior

Influence of Tool Manufacturing Process on Cutting Edge Chipping

30 The contour plots shown

Influence of Cutting Edge Chipping on the Tool Wear

Development of awhich

Findings

Conclusions