A new method for the characterisation of rounded cutting edges

Abstract

The influence of the cutting edge micro geometry on cutting process and on tool performance is subject of several research projects. Recently published papers focus on optimising the cutting edge rounding. The results are partly inconsistent. Unfortunately, no international standard yet exists to properly describe the cutting edge micro geometry. This is seen as the root cause for detected discrepancies. To develop a common understanding for the influence of rounded cutting edges, it is indispensable to use the same basis to characterise the edge profile. This paper gives a review on existing characterisation methods, analyses the difficulties in their application and discusses different modelling ideas to describe the cutting edge profile. Based hereon, a new algorithm and geometrical parameterisation of the cutting edge is proposed, which reduces uncertainties and difficulties in the application of currently available methods. The proposed method considers measurement uncertainties and is robust against form errors and creates thus the basis required for the study of the influence of rounded cutting edges.

Application of foil electrodes for electro-erosion edge honing of complex-shaped carbide inserts

“…Examination of the honed segment indicates electro-erosion honing to have effectively purged such detrimental features from the edge, which is a mechanism by which the honing process enhances both tool performance and reliability. Various geometric parameters have of late been proposed for the characterization of cutting edges (Wyen et al, 2012); in the present work, edge geometry was however quantified in terms of the edge radius considering that the honed edges were symmetric. Cutting edge measurements were conducted by processing the image data acquired using an optical microscope equipped with an automated stage to acquire a series of uniformly spaced images in the vertical direction.…”

Influence of cutting edge radius on surface integrity and burr formation in milling titanium

“…The edges had a rake angle of γ010°and a clearance angle of α08°. The cutting edges were characterised using the method proposed in [22]. The inserts and tool holder were specially manufactured for the experiments.…”

Recent Advances in Micro/Nano-cutting: Effect of Tool Edge and Material Properties

“…Besides that, there is no international standard to characterize the micro-geometry of tool edges, although the macro-geometry of the cutting tool is internationally standardized [59]. It becomes indispensable to draft a standard and characterize the shape of tool edge based on it.…”

“…Therefore, Wyen et al [59] develop a Fig. 3 Proposed method for characterizing rounded tool edge [59,60] Nanomanufacturing and Metrology (2018) 1:4- 31 7 method in characterizing the asymmetry of cutting edges. As shown in Fig.…”