DEKON end mills can achieve high efficiency and high finishing
Mill the S50C material artifacts with 2FL type f10 coated carbide end mill in BT30 vertical machining center side (cutting conditions: the speed: 20000/min; cutting depth: aa=15mm, ar=0.5mm; climb milling; using water soluble coolant), the test results seen by the relationship between the feed amount of carbide end mills per tooth and the machining accuracy, with the increase in the amount of feed per tooth, the accuracy of the machined surface is reduced, which is because the increase in the feed volume per tooth makes the cuttings to be thickened, cutting resistance increased and the resistance value changes.
High-speed milling is the best high precision milling method
If you choose high speed and moderate tooth feed, it not only can improve the speed of the feed, but also improve the cutting performance near the ball-end cutter rotation center region. In addition, during the chip generation process, high-speed cutting makes the shear angle larger, which can generate thin chips and reduce cutting resistance. We can see the high-speed milling is the best high precision milling method.
CBN-SXB end mills have been commercialized
Using DS-B R1 super ball end mill, you can high speed mill hardened steel mold on HSK-E32 vertical machining center (Material: SKD11, HRC62) cutting conditions: speed: 32000/min; feed rate: 2800mm/min (0.038mm / teeth); depth of cut: aa = 0.04mm; Pf = 0.05mm; air-cooled. In addition, hardened steel molds CBN-SXB cubic boron nitride ball nose end mills which can achieve high speed and high precision milling have also been commercialized. The original CBN ball end mill toughness is worse compared to the hardened alloy tool, which can only be used for small depths of cut milling. By improving its base, the ball head portion using the spiral cutting edge, it will be able to adapt to the depth and the changeable high-speed high-precision milling of proximity carbide ball nose end mill cutting.
End mill products that can achieve efficient rough milling
Mill the S50C material workpiece with 6FL type f10 coated carbide cutter (cutting conditions: cutting speed: 200m/min; feed speed: 0.2, 0.3 mm / tooth; cutting depth: aa = 10mm, ar = 0.5mm; climb milling; air-cooled), the test results for the relationship between the amount of feed per tooth and extended state of end mills cylindrical cutting edge show that the machining accuracy decreases when the feed amount per tooth increases, which can slow down the expansion of wear. Therefore, within the allowable range of machining accuracy, it is beneficial to increase the amount of feed per tooth as far as possible. Particularly in tool overhang aspect ratio (L / D) larger conditions; because it is easy to produce high-frequency vibrations in the high speed range, therefore you should use a lower cutting speed. At rough milling, within the range allowed by the tool body and tip strength, improving feed amount per tooth is the effective means to achieve efficient processing. You should use tools that are suitable for rough feed.
This article is come from:http://pannel.aluminum-machine.com/gas-hobs/end-mills-for-mold-high-speed-machining.htm
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