Cutting Edge Preparation for Cemented Carbide Milling Tools

After the grinding process, the cutting edges of cemented carbide milling tools tend to chipping. Chipping has a strong influence on the tool performance. For this reason, the cutting edges are further prepared. Additionally, a cutting edge rounding has an impact on the wear behavior and the process stability. For the cutting edge preparation of milling tools, magnetic finishing is a promising process. This paper describes the process of magnetic finishing. The influencing parameters, i.e. the process time and the distance between the cutting tool and the magnetic disks, are investigated. Furthermore, the effect of magnetic finishing on the tool life is demonstrated using the example of a milling process with titanium.

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Schneidkantenpräparation von VHM-Mikrofräsern*/Cutting edge preparation of cemented carbide micro milling tools – A comparison of different fine machining processes

wt Werkstattstechnik online ◽

10.37544/1436-4980-2015-11-12-45 ◽

2015 ◽

Vol 105 (11-12) ◽

pp. 805-811

Author(s):

E. Uhlmann ◽

D. Oberschmidt ◽

A. Löwenstein ◽

M. Polte ◽

I. Winker

Keyword(s):

Tool Wear ◽

Milling Process ◽

Cutting Edge ◽

Micro Milling ◽

Machining Processes ◽

Process Reliability ◽

Cutting Edge Preparation ◽

Milling Tools ◽

Edge Preparation

Die Prozesssicherheit beim Mikrofräsen lässt sich mit einer gezielten Schneidkantenverrundung erheblich steigern. Dabei werden durch verschiedene Präparationstechnologien unterschiedliche Geometrien und Einflüsse auf den Fräsprozess erzeugt. Der Fachbeitrag behandelt den Einsatz präparierter Mikrowerkzeuge in Zerspanversuchen, in denen auf die Zerspankräfte, den Verschleiß sowie die Oberflächengüten eingegangen wird.   Process reliability in micro milling can be increased by a defined cutting edge preparation. Different cutting edge preparations cause different effects on tool behavior in the downstream micro milling process. In this paper, the process forces, the tool wear and the surface quality of prepared micro milling tools are characterized in cutting tests.

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The Influence of Surface Treatment of PVD Coating on Its Quality and Wear Resistant

Coatings ◽

10.3390/coatings9070439 ◽

2019 ◽

Vol 9 (7) ◽

pp. 439 ◽

Cited By ~ 3

Author(s):

Tomas Zlamal ◽

Ivan Mrkvica ◽

Tomas Szotkowski ◽

Sarka Malotova

Keyword(s):

Surface Roughness ◽

Wear Resistance ◽

Cutting Tool ◽

Milling Process ◽

Cutting Edge ◽

Life Test ◽

Pvd Coating ◽

Cutting Inserts ◽

Cutting Edge Preparation ◽

Edge Preparation

The article deals with a determination of the influence of a cutting edge preparation on the quality and wear resistance of coated cutting tools. Cutting inserts made from a sintered carbide with a deposited layer of PVD coating were selected for measurement. Non-homogeneity caused by the creation of droplets arises in the application layer during the process of applying the coating by the PVD method. These droplets make the surface roughness of the PVD coating worse, increase the friction and thereby the thermal load of the cutting tool as well. Also, the droplets could be the cause of the creation and propagation of droplets in the coating and they can cause quick cutting tool wear during machining. Cutting edge preparations were suggested for the improvement of the surface integrity of deposited layers of PVD coating, namely the technology of drag finishing and abrasive jet machining. After their application, the areal surface roughness was measured on the surface of coated cutting inserts, the occurrence of droplets was tracked and the surface structure was explored. A tool-life test of cutting inserts was carried out for verification of the influence of surface treatment on the wear resistance of cutting inserts during the milling process. The cutting inserts with a layer of PVD coatings termed as samples A, B, and C were used for the tool-life test. The first sample, A, represented the coating before the application of cutting edge preparations and samples B and C were after the application of the cutting edge preparation. A carbon steel termed C45 was used for the milling process and cutting conditions were suggested. The visual control of surface of cutting inserts, intensity of wear and occurrence of thermal cracks in deposited PVD layers were the criterion for the evaluation of the individual tests.

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Cutting Edge Preparation by Means of Abrasive Brushing

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.438.1 ◽

2010 ◽

Vol 438 ◽

pp. 1-7 ◽

Cited By ~ 12

Author(s):

Berend Denkena ◽

Luis de Leon ◽

E. Bassett ◽

M. Rehe

Keyword(s):

Tool Life ◽

Cutting Tool ◽

Market Competition ◽

Cutting Edge ◽

Production Costs ◽

Tool Performance ◽

Process Reliability ◽

Cutting Edge Preparation ◽

Edge Preparation

The need for new cutting tool technologies is driven by the constantly increasing performance of machine tools and the rising market competition. Current research results show that an improved combination of the cutting edge macro- and microgeometry, together with an appropriate substrate and coating, leads to a significant enhancement of cutting tool performance. Furthermore, inappropriate cutting edge microgeometries cause, in addition to the higher production costs, a reduction of the tool life. Hence, it is essential to produce tailored cutting edge microgeometries with high precision and process reliability. This paper presents the influence of brushing process parameters on the size and the form of produced cutting edges of indexable inserts. This leads to a better understanding and higher quality of the cutting edge preparation process by means of abrasive brushes. Furthermore, the process reliability of 5-axes brushing is analyzed. An example of a tool life map presents the significantly enhanced tool performance through cutting edge preparation and its sensitivity towards varying the cutting edge microgeometry.

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

Journal of Manufacturing and Materials Processing ◽

10.3390/jmmp5030077 ◽

2021 ◽

Vol 5 (3) ◽

pp. 77

Author(s):

Berend Denkena ◽

Alexander Krödel-Worbes ◽

Sascha Beblein ◽

Markus Hein

Keyword(s):

Wear Behavior ◽

Cutting Edge ◽

End Mills ◽

Edge Quality ◽

Manufacturing Process Chain ◽

The Individual ◽

Application Specific ◽

Milling Tools ◽

Edge Preparation

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.

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Standzeitoptimierung von Kreissägewerkzeugen/Optimization of the tool life of circular saw blades

wt Werkstattstechnik online ◽

10.37544/1436-4980-2021-11-12-63 ◽

2021 ◽

Vol 111 (11-12) ◽

pp. 833-839

Author(s):

Kolb Moritz ◽

Tim Mayer ◽

Nico Rasenberger

Keyword(s):

Service Life ◽

Tool Life ◽

Model Test ◽

Wear Behavior ◽

Cutting Edge ◽

Circular Saw ◽

Single Tooth ◽

Cutting Edge Preparation ◽

Saw Blade ◽

Edge Preparation

Dieser Beitrag beschreibt, wie sich die Standzeit von Kreissägeblättern durch Schneidkantenpräparation gezielt beeinflussen lässt. Hierfür wurden zunächst einzelne Segmente aus einem Sägeblatt herausgetrennt und Einzahnproben mit variierenden Schneidenmikrogeometrien mittels Bürstspanen präpariert. Anschließend wurde das Einsatz- und Verschleißverhalten der zuvor hergestellten Proben in einem Kreissäge-Modellversuch untersucht.   This article describes how the service life of circular saw blades can be specifically influenced by cutting edge preparation. For this purpose, individual segments were first cut out of a saw blade. These single-tooth specimens with varying cutting edge microgeometries were prepared by abrasive brushing. Then the usage and wear behavior of the previously produced samples was investigated in a circular saw model test.

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