The initial rough machining operation cuts between the blades with a series of slotting cuts using Technicut’s new Titan X-Treme Ripper endmill. ![]() They offer advantages in weight, efficiency and through-life servicing but are challenging to manufacture because of their highly complex shapes and the hardness of the materials used, usually titanium or nickel alloys.Īs with most machining projects, the new blisk machining method comprises roughing, semi-finishing and finishing operations. The initial billet was 804 mm diameter Ti6-4 titanium, while the completed blisk has 31 blades, each 84mm in length with a root radius of 4mm and scallop height of 10µm.īlisks are used increasingly in place of a series of individual blades fixed into a central hub. In the example to be displayed at MACH, the cycle time was reduced to 35 hours, less than half the time that would have been needed using conventional methods, while the costs for milling were reduced by 45%. ![]() The new method, which has been developed by Delcam in association with tooling supplier Technicut, covers the machining of the blisk from start to finish and combines new tooling concepts from Technicut with advanced machining strategies in Delcam’s PowerMILL CAM software for the rough, semi-finish and finish machining of integrally bladed rotors. By Niraj M Wanikar, Chief Editor,, 04:00:00ĭelcam will demonstrate a faster and cheaper method for machining blisks at MACHĪmong the many new developments to be shown by Delcam on stand 4011 at MACH will be a new method for machining blisks that offers substantial savings in both cycle time and cost.
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