| 摘要 |
PROBLEM TO BE SOLVED: To provide a tool combining a cutting blade and burnishing roller to perform dimensional correction and roller burnishing surface finishing simultaneously in one process suitable for inside processing of a small diameter hole in particular. SOLUTION: The parallel arrangement of a cutter 14 and a roller 15 on the outer circumference of the main body enables the simultaneous processing. Also, the symmetrical arrangement of two of the cutters 14 and rollers 15 respectively offsets the cutting resistance and secures coaxial performance. The roller 15 is supported on a mandrel 17 possible to rotate freely. During processing, high-pressure working fluid is supplied to the roller from the working fluid supply routes 12a, 17b to smooth the rotation of the roller and to raise the roller burnishing pressure. Also, high-pressure working fluid is supplied to a chip pocket 16 from the behind to remove chips quickly. |
