High speed milling of graphite electrode with endmill of small diameter

2007 ◽  
Vol 20 (04) ◽  
pp. 27 ◽  
Author(s):  
Chengyong WANG
Keyword(s):  
High Speed ◽  
Graphite Electrode ◽  
Small Diameter ◽  
High Speed Milling

Behavior Monitoring of Small-Diameter Milling-Cutter during High-Speed Milling

2004 ◽  
Vol 259-260 ◽  
pp. 165-169 ◽  
Author(s):  
Yoshihiro Kawano ◽  
A. Minami ◽  
S. Yoshimitsu ◽  
Dun Wen Zuo ◽  
T. Tsukasa
Keyword(s):  
High Speed ◽  
Small Diameter ◽  
Milling Cutter ◽  
High Speed Milling ◽  
Behavior Monitoring

Effect of Pick Feed on Machining Characteristic of Up Cutting in the High-Efficient Machining by Small Diameter Radius End Mill

2019 ◽  
Vol 825 ◽  
pp. 31-38
Author(s):  
Hisaaki Nakai ◽  
Takekazu Sawa ◽  
Masahiro Anzai
Keyword(s):  
Tool Wear ◽  
High Speed ◽  
Flank Wear ◽  
Small Diameter ◽  
Hardened Steel ◽  
End Mill ◽  
High Speed Milling ◽  
Improve Efficiency ◽  
High Efficient ◽  
Coated Carbide

In order to improve efficiency of high speed milling, effects of pick feeds of up cutting and down cutting on tool wear and processing characteristics were investigated after cutting pre-hardened steel NAK 55 by TiAlN-coated carbide radius end mill. Flank wear of the tools after up cutting was less than down cutting when the pick feed was smaller than 0.1 mm, which tendency changed when the pick feed was larger than 0.3 mm.

High-speed milling of quenched steel using small diameter cBN ball endmill

2004 ◽  
Vol 2004.5 (0) ◽  
pp. 265-266
Author(s):  
Ichiro TAKAHASHI ◽  
Weimin LIN ◽  
Katsuyuki ABE ◽  
Masahiro ANZAI ◽  
Hitoshi OHMORI
Keyword(s):  
High Speed ◽  
Small Diameter ◽  
High Speed Milling ◽  
Quenched Steel

In-Process Monitoring of Tool Behavior and Tool Wear in End Milling by Use of Projection Image

2012 ◽  
Vol 523-524 ◽  
pp. 433-438 ◽  
Author(s):  
Shinichi Yoshimitsu ◽  
Shinobu Satonaka ◽  
Yoshihiro Kawano ◽  
Chihiro Iwamoto ◽  
Dun Wen Zuo ◽  
...  
Keyword(s):  
Tool Wear ◽  
Monitoring System ◽  
High Speed ◽  
End Milling ◽  
Small Diameter ◽  
Tool Deflection ◽  
Tool Breakage ◽  
High Speed Milling ◽  
Machining Center ◽  
The Relationship

This report describes a two-dimensional monitoring system for milling machines using small-diameter tools. Small-diameter tools are used for high-speed milling, and they are indispensable for high-quality and high-productivity manufacturing. However, tool breakage occasionally occurs, and this becomes a serious problem in automated production. This study aims to develop a system for monitoring the cutting state that can prevent tool breakage. The proposed system consists of two charge-coupled device (CCD) cameras, an image processing device, a man-machine controller (MMC), and a machining center with an open computer numeric (CNC). This monitoring system is connected to the machining center by Ethernet. It enables the precise measurement of tool deflection during high-speed milling. In an experiment, we applied this system to the end milling of a steel plate under different cutting conditions, and we examined the relationship between tool deflection and the cutting conditions. In addition, we applied this monitoring system to measure tool wear, and we examined the relationship between tool deflection and tool wear. It was found that the proposed system enabled in-process monitoring of the cutting state and tool wear.

Tool Life of Small Diameter Ball End Mill for High Speed Milling of Hardened Steel - Effects of the Machining Method and the Tool Materials -

2008 ◽  
Vol 2 (6) ◽  
pp. 425-430 ◽  
Author(s):  
Hiroyasu Iwabe ◽  
◽  
Kazufumi Enta
Keyword(s):  
Surface Roughness ◽  
Tool Life ◽  
High Speed ◽  
Flank Wear ◽  
Small Diameter ◽  
Hardened Steel ◽  
End Mill ◽  
Ball End Mill ◽  
High Speed Milling ◽  
Cutting Length

We studied tool life, flank wear, and machined surface roughness in the high-speed milling of hardened steel on a small ball end mill using a high-speed milling machine. We found that: (1) Cutting edge flank wear increases in proportion to cutting length and the flank wear shape gradually has a resembalance to the shape of the actual cutting length. (2) Long tool life depends on stepdown pick-feed and down-milling conditions. (3) Surface roughness increases in proportion to cutting length, but a low surface roughness of 1.4 μm is obtainable for a 3,800 m cutting length in down-milling. (4) CBN tool flank wear is very low -- at least 1/15 th that of carbide tools under down-milling conditions, and a surface roughness of 1.6 μm is obtainable for a 67.2 km cutting length. We verified the effectiveness of CBN tools in high-speed milling of hardened steel under cutting conditions.

Cutting Parameters Optimization of High-Speed Milling of Thin-Walled Graphite Electrode

2006 ◽  
Vol 315-316 ◽  
pp. 319-323 ◽  
Author(s):  
Z.L. Hu ◽  
Cheng Yong Wang ◽  
L. Zhou ◽  
H. Fu ◽  
J. Chen
Keyword(s):  
High Speed ◽  
Graphite Electrode ◽  
Cutting Parameters ◽  
Parameters Optimization ◽  
Main Process ◽  
Cutting Depth ◽  
High Speed Milling ◽  
Radial Depth ◽  
Thin Walled ◽  
Cutting Parameters Optimization

Graphite electrode material has been extensively used for thin-walled electrode manufacturing, due to its typical brittleness, HSM becomes the main process method to obtain higher productivity and good surface finish. According to the structure characteristics of the thin-walled graphite electrode and the problems arising in its high-speed milling, through high-speed milling experiments, researches have been done into the effect of the main cutting parameters on cutting forces, which include cutting speed, feed per tooth, radial cutting depth, axial cutting depth, down or up milling. Finally, cutting parameters optimization strategies of high-speed milling of thin-walled graphite electrode aiming to obtain higher efficiency and high quality are presented as follows: down-cut mode, moderate radial depth of cut and flat endmill should be adopted in high-speed milling of graphite electrode.

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