| 摘要 |
PROBLEM TO BE SOLVED: To provide a spline broach capable of continuing to supply cutting oil to a processing portion while a cutting blade cuts a workpiece even in the mist processing. SOLUTION: A cutting blade part constituted by arranging a large number of spline blades 30 having a plurality of teeth 311 comprises a front cutting blade group and a rear cutting blade group. The rear cutting blade group forms cutting oil grooves 313 for supplying cutting oil 9 to all of tooth sides 314 and tooth bottoms 312, and a workpiece guiding part 315 for guiding the workpiece at the time of cutting is provided on the tooth tip side of the tooth side face 314. COPYRIGHT: (C)2007,JPO&INPIT
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