| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a better, faster, and less expensive cutter and method for more fully machining airfoils. <P>SOLUTION: A spherical cutter 34 includes a spherically shaped body 42 having open and closed ends 44, 46 defining a central cavity 54, multipoint cutting edges 71 disposed along a circular rim 58 at the open end 44, and the spherically shaped body 42 generally defined by a radius and an origin. The cutting edges 71 may be provided on cutting inserts 60 removably attached to support teeth 62 circumferentially disposed along the rim 58. The spherical cutter may be mounted to a spindle 32 of a multi-axis computer numerically controlled machine 31 with the radius and the origin located along a rotational axis 48 of the spindle. The machine 31 may be used for machining a cylindrical blank 12 to form a plurality of circumferentially spaced apart integral rotor blades 18 extending radially outwardly from a hub 14 by machining each of the slots 37 along a spherical surface defined by the radius and the origin. <P>COPYRIGHT: (C)2013,JPO&INPIT |
