GRINDING VIPER grinding gets more bite （磨毒蛇研磨得到更多的咬人）.pdfVIP

GRINDING VIPER grinding gets more bite The latest developments at Makino now include VIPER grinding as part of machines with multi-function capability, delegates to a recent seminar were told. Machinery reports Very Impressive Performance Extreme Removal (VIPER) grinding was first introduced seven years ago as a replacement for creep-feed grinding of nickel-based superalloys. The process helped Rolls-Royce, VIPER’s originator, slash lead-times for compressor blades, turbine blades and engine casings by factors previously unimaginable. Other benefits for the company include reduced thermal damage and consumable costs, as well as improved process consistency. Yet, working with partners such as Makino and Tyrolit, the process has evolved further still. Today, versatility is almost unlimited, using Makino-NCMT solutions, owing to the ability to mix and match machining processes. While maximum advantage is taken of the VIPER process for roughing and semi-finishing, if finishing is not appropriate, perhaps because a grinding wheel cannot access certain features or a customer does not accept grinding as a final operation, then milling or broaching can complete the machining cycle. Using Makino horizontal machining centres, a milling cutter, drill A Makino A100 with 1,700 by 1,350 by 1,400 mm travels was set up to demonstrate or other driven or static tool for turning how the benefits of VIPER grinding are transferable to big nickel alloy components can also be changed during a cycle, like a 1.1 m diameter jet engine casing. Other functions were combined to show how allowing second and subsequent they can replace conventional milling and lathe-turning machining operations to be carried out in the same set-up. Although the seminar feature