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

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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Influence of Cutting Edge Preparation on the Performance of Micro Milling Tools

Procedia CIRP ◽

10.1016/j.procir.2016.03.204 ◽

2016 ◽

Vol 46 ◽

pp. 214-217 ◽

Cited By ~ 12

Author(s):

E. Uhlmann ◽

D. Oberschmidt ◽

A. Löwenstein ◽

Y. Kuche

Keyword(s):

Cutting Edge ◽

Micro Milling ◽

Cutting Edge Preparation ◽

Milling Tools ◽

Edge Preparation

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Cutting Edge Preparation of Micro Milling Tools

Procedia CIRP ◽

10.1016/j.procir.2014.03.083 ◽

2014 ◽

Vol 14 ◽

pp. 349-354 ◽

Cited By ~ 15

Author(s):

E. Uhlmann ◽

D. Oberschmidt ◽

Y. Kuche ◽

A. Löwenstein

Keyword(s):

Cutting Edge ◽

Micro Milling ◽

Cutting Edge Preparation ◽

Milling Tools ◽

Edge Preparation

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Cutting Edge Preparation for Cemented Carbide Milling Tools

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.76-78.597 ◽

2009 ◽

Vol 76-78 ◽

pp. 597-602 ◽

Cited By ~ 4

Author(s):

Berend Denkena ◽

Luis de Leon ◽

Jens Köhler

Keyword(s):

Cutting Tool ◽

Wear Behavior ◽

Milling Process ◽

Cutting Edge ◽

Cemented Carbide ◽

Process Time ◽

Tool Performance ◽

Cutting Edge Preparation ◽

Milling Tools ◽

Edge Preparation

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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Flakkotieren von Fräsern zum Mikro-Hartfräsen/Flakkoting of milling tools for hard milling- Improvement of the performance of micro milling tools in hard milling by high precision brushing

wt Werkstattstechnik online ◽

10.37544/1436-4980-2019-11-12-35 ◽

2019 ◽

Vol 109 (11-12) ◽

pp. 833-839

Author(s):

P. Frank ◽

A. Otto

Keyword(s):

High Precision ◽

Tool Life ◽

Cutting Edge ◽

Micro Milling ◽

Initial State ◽

Hard Milling ◽

Cutting Edge Preparation ◽

Technical University ◽

Milling Tools ◽

Edge Preparation

Die nachfolgende Studie ist an der Technischen Hochschule Georg Agricola zu Bochum entstanden. Sie gibt einen Überblick über die Grundlagen, Anwendungen und Möglichkeiten der Werkzeugoptimierung und somit der Standzeiterhöhung mithilfe des Hochpräzisionsbürstens (Flakkotieren) an Mikrotorusfräsern. Ein Abgleich von verschiedenen präparierten und sich im Ausgangszustand befindlichen Mikrofräsern sollen hierbei die Möglichkeiten und Grenzen der Schneidkantenpräparation aufzeigen.   The following study was carried out at the Technical University Georg Agricola in Bochum. It provides an overview of the basics, applications and opportunities for improving tools and thus for increasing tool life with the aid of high-precision brushing (flakkoting) on milling tools for hard milling. Comparing a number of prepared micro milling cutters in their initial state, it demonstrates the opportunities and limits of cutting edge preparation.

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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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Cutting edge preparation in machining processes

Scientific Letters of Rzeszow University of Technology - Mechanics ◽

10.7862/rm.2013.14 ◽

2013 ◽

Vol 30 (85(2/2013)) ◽

pp. 149-159 ◽

Cited By ~ 4

Author(s):

Ladislav Kandráč ◽

Ildikó Maňková ◽

Marek Vrabeľ

Keyword(s):

Cutting Edge ◽

Machining Processes ◽

Cutting Edge Preparation ◽

Edge Preparation

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Edge Preparation on Cutting Force, Cutting Temperature and Tool Wear for Hard Turning

Materials Science Forum ◽

10.4028/www.scientific.net/msf.800-801.424 ◽

2014 ◽

Vol 800-801 ◽

pp. 424-429

Author(s):

Pei Rong Zhang ◽

Zhan Qiang Liu

Keyword(s):

Tool Wear ◽

Cutting Force ◽

Hard Turning ◽

Flank Wear ◽

Cutting Temperature ◽

Cutting Edge ◽

Crater Wear ◽

Cutting Edge Preparation ◽

Flank Face ◽

Edge Preparation

The paper investigates the effects of cutting edge preparation on cutting force, cutting temperature and tool wear for hard turning. An optimized characterization approach is proposed and five kinds of cemented tools with different edge preparation are adopted in the simulations by DEFROM-2DTM. The results show that both the forces and cutting temperature on the rake face climb up and then declines with the increasing of factor K (Sγ/Sα). While the temperature on flank face decrease with the increasing of the factor K. When the cutting conditions are identical, flank wear reduces while crater wear exacerbates before easing with the increasing of the factor K. The simulation results will provide valuable suggestions for optimization of cutting edge preparation for hard turning in order to obtain excellent machining quality and longer tool life.

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Gear Shaving: Simulation and Technological Studies

Volume 4: 9th International Power Transmission and Gearing Conference, Parts A and B ◽

10.1115/detc2003/ptg-48033 ◽

2003 ◽

Cited By ~ 7

Author(s):

Fritz Klocke ◽

Tobias Schro¨der

Keyword(s):

Tool Wear ◽

Manufacturing Industry ◽

Tolerance Limits ◽

Machining Processes ◽

Industrial Practice ◽

Process Reliability ◽

Gear Manufacturing ◽

Numerical Process ◽

Conventional Machining

Due to its high economical efficiency, the gear shaving process is a widely-used process for soft finishing of gears in the gear manufacturing industry. The wear of the gear shaving tools in industrial practice is determined by the quality of the workpiece which can be achieved with a tool. After the tolerance limits of the gear quality are exceeded, the tool is considered to be worn and must be reground. So far, it has not been studied, what exactly causes the decrease in gear quality and what a worn shaving wheel looks like. Due to the technological peculiarities of the gear shaving process, the tool wear can be expected to appear in a very different way as in conventional machining processes with geometrically defined cutting edges. The knowledge of this tool wear is essential in order to find ways to increase the efficiency as well as the process reliability in gear shaving even further. Therefore, this paper explains the technological peculiarities of the gear shaving process by using a numerical process simulation. Furthermore, it shows examples of worn cutting edges in gear shaving and explains the effects of this tool wear on the quality of the shaved gears.

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