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

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.

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

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.

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

Procedia CIRP ◽  
2016 ◽  
Vol 46 ◽  
pp. 214-217 ◽  
Author(s):  
E. Uhlmann ◽  
D. Oberschmidt ◽  
A. Löwenstein ◽  
Y. Kuche
Keyword(s):  
Cutting Edge ◽  
Micro Milling ◽  
Cutting Edge Preparation ◽  
Milling Tools ◽  
Edge Preparation

scholarly journals Cutting Edge Preparation of Micro Milling Tools

Procedia CIRP ◽  
2014 ◽  
Vol 14 ◽  
pp. 349-354 ◽  
Author(s):  
E. Uhlmann ◽  
D. Oberschmidt ◽  
Y. Kuche ◽  
A. Löwenstein
Keyword(s):  
Cutting Edge ◽  
Micro Milling ◽  
Cutting Edge Preparation ◽  
Milling Tools ◽  
Edge Preparation

Kantenpräparation durch Formschleifprozesse*/Cutting edge preparation by form grinding

2017 ◽  
Vol 107 (06) ◽  
pp. 453-460
Author(s):  
E. Prof. Uhlmann ◽  
J. Bruckhoff
Keyword(s):  
Tool Life ◽  
Cutting Tools ◽  
Cutting Edge ◽  
Grinding Processes ◽  
Form Grinding ◽  
Cutting Edge Preparation ◽  
Edge Preparation

Angesichts steigender Anforderungen an Zerspanwerkzeuge nimmt die Schneidkantenpräparation einen immer größer werdenden Stellenwert ein, da sich so die Standzeit von Zerspanwerkzeugen erhöhen lässt. Die bisher eingesetzten Präparationsverfahren eignen sich meist nur für einfache Verrundungen an der Schneidkante. In umfangreichen Untersuchungen wurde die Eignung von Formschleifprozessen zur Herstellung definierter Schneidkantenmikrogeometrien anhand von Arbeitsergebnissen analysiert.   Due to increasing demands on cutting tools cutting edge preparation has a high priority because it influences the tool life. Current cutting edge preparation processes can only generate simple roundings on the cutting edge. By extensive investigations the suitability of form grinding processes for the production of defined microgeometries on the cutting edge was analysed.

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

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.

Cutting Edge Preparation for Cemented Carbide Milling Tools

2009 ◽  
Vol 76-78 ◽  
pp. 597-602 ◽  
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.

Electro-polishing of tungsten carbide ball nose end mill to improve tool life

2015 ◽  
Vol 231 (4) ◽  
pp. 667-675 ◽  
Author(s):  
Ramesh Kuppuswamy ◽  
Kapui Mubita
Keyword(s):  
Tungsten Carbide ◽  
Tool Life ◽  
Surface Texture ◽  
Flank Wear ◽  
Electrolytic Cell ◽  
Cutting Edge ◽  
End Mill ◽  
End Mills ◽  
Cutting Edge Preparation ◽  
Edge Preparation

Electro-polishing was used as an alternative to mechanical polishing for the cutting edge preparation of tungsten carbide (WC) ball nose end mills. High-quality cutting edge surfaces with roughness of magnitude 0.3–0.35 µm was achieved using the electro-polishing process. A direct current of 0.96 A was passed through an electrolytic cell containing the electrolyte sodium hydroxide with a concentration—2.5 mol/dm3. The ball nose end mill was suspended as the anode and a stainless steel (SS304) as the cathode. The ball nose end mill was electro-polished using the optimized parameters which was obtained through performing the preliminary experiments on tungsten carbide coupons of size D6 × 20 mm. The effects of electro-polishing on the surface texture of the ball nose end mill were determined using surface texture examinations. Machining tests were conducted on Ti6Al4V alloy to understand the growth of flank wear on the electro-polished ball nose end mills. After every 5 m of cutting distance, flank wear measurements were done for both the regular ball nose end mill and the electro-polished ball nose end mills. The results revealed that the electro-polished ball nose end mill reached a flank wear of 0.15 mm after a cutting distance of 550 m. This was significantly more than the cutting distance of the standard ball nose end mill of magnitude 350 m for the same amount of flank wear. This showed an increase in tool life of over 50%.

scholarly journals Effects of Different Cutting Edge Preparation Methods on Micro Milling Performance

Procedia CIRP ◽  
2016 ◽  
Vol 46 ◽  
pp. 352-355 ◽  
Author(s):  
E. Uhlmann ◽  
D. Oberschmidt ◽  
Y. Kuche ◽  
A. Löwenstein ◽  
I. Winker
Keyword(s):  
Cutting Edge ◽  
Micro Milling ◽  
Preparation Methods ◽  
Milling Performance ◽  
Cutting Edge Preparation ◽  
Edge Preparation

Drehen von ausferritischem Gusseisen*/Turning of austempered ductile iron - How the cutting edge geometry impacts wear mechanism and machining result

2017 ◽  
Vol 107 (10) ◽  
pp. 754-760
Author(s):  
J. Hartig ◽  
B. Kirsch ◽  
M. Zimmermann ◽  
J. C. Prof. Aurich
Keyword(s):  
Tungsten Carbide ◽  
Tool Life ◽  
Wear Mechanism ◽  
Ductile Iron ◽  
Cutting Edge ◽  
Austempered Ductile Iron ◽  
Edge Geometry ◽  
Cutting Edge Preparation ◽  
The Impact ◽  
Edge Preparation

Unpräparierte Schneiden führen aufgrund mangelnder Stabilität zu unregelmäßigem Verschleißverhalten und geringen Werkzeugstandzeiten. Dem wirkt eine Stabilisierung der Schneide mittels Schneidkantenpräparation entgegen. In diesem Fachbeitrag wurde der Einfluss unterschiedlich präparierter Schneiden von Hartmetall-Wendeschneidplatten auf die Werkzeugstandzeit und das Prozessergebnis beim Außenlängs-Runddrehen von ausferritischem Gusseisen (ADI) 900 untersucht.   Unprepared cutting edges are subject to irregular wear progress and poor tool life. In contrast, cutting edge preparation provokes a stabilization of the cutting edge. This article investigates the impact of different preparations of tungsten carbide indexable inserts on tool life and machining results when turning austempered ductile iron (ADI) 900.

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