| 摘要 |
<p>A cutter system (10) that is designed to create a continuous cutting true helix while having cutting inserts (14) that are indexable on at least two cutting edges (66 and 68) by rotating the cutting insert. High positive radial and axial rakes enable free cutting machining with a fine finish and low horsepower consumption. The back face (40) of the insert (14) is substantially flat and is used for face contact on lockup with a mounting pocket (34) on the cutter body (12) when the insert screw is tightened. The mounting pocket (34) is designed for ease of manufacture to limit tolerance buildup to ensure repeatable insert (14) positioning and to maintain accuracy for a fine cutting finish. The insert screw hole (46) is placed in the cross hole location for allowing an unobstructed cutting face and a larger diameter center core in the cutter body (12). The larger core creates maximum strength and allows longer cutting lengths. Prior to grinding, the insert blank can be used for multiple diameters of cutters. After grinding the insert blank, the inserts are made specific to the cutting diameter for which they were ground or a compromised grind may be employed for use with multiple cutting diameters.</p> |
