| 摘要 |
An internal pull broach is disclosed for roughing, semi-finishing and finishing at least one wall in a workpiece during a single stroke machining operation. The broach includes an elongated cutting tool holder having a longitudinal axis and a plurality of laterally extending, longitudinally spaced pockets. Cutter inserts are disposed in each of the pockets to define a plurality of sequentially acting protuberances. Each protuberance has a cutting edge extending laterally with respect to the longitudinal axis of the tool holder substantially across an entire width of the tool holder for progressively cutting into the wall of the workpiece sequentially as the tool holder moves during the single stroke along a fixed path coaxial with the longitudinal axis of the tool holder. Preferably, the longitudinally spaced pockets are subdivided into groups having unique configurations or fastener patterns, so that corresponding cutter inserts having identical configurations or fastener patterns are independently indexable and replaceable within corresponding pocket configurations, while being interchangeable only within a respective pocket configuration group.
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