Ring, disc, shaft, and this type of gas turbine casing machine normal policy motives have relatively large shape, any necessary copy turning recess in a small confined space. These machine data normal workability is poor. High cutting forces, high temperatures and strong cutting notch wear trend for efficient machining and cutting edge made high demands, which requires specially opened in response tools and processing methods. Among them, the wide groove profiling occupied large proportion of the total cutting time, so people would be presumptuous of particular concern to this latest tool technology public areas.