| 摘要 |
A rotatable cutting tool for cutting a spherical seat carries a plurality of indexable cutting inserts at the front end of the cutter body. The inserts are locate in pockets and retained in the pockets by respective retainer members mounted on the body and overlying the exposed face of the insert. A reduced diameter section at the rearward end of the cutter body is dimensional to be rotatably received in a bore extending through a plate-like hanger. A retainer plate is cooperable with headed cap screws projecting from the rear end of the reduced diameter section of the body to constitute a quick disconnect coupling for rapid mounting and dismounting of the cutter upon its hanger. The cutting edges of the inserts lie in respective axial planes offset forwardly, with respect to the direction of rotation of the tool, from the axis of rotation and angularly offset from each other by unequal angles.
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