| 摘要 |
The invention relates to an adjustable chucking reamer having a reamer shank and an interchangeable, sleeve-like reamer head which is continuously corrugated in cross-section and is provided with cutting edges arranged at shoulders formed by radial projections at the reamer head, and which is fixed resiliently about a conical expansion member between the said expansion member and a displaceably arranged sleeve supported on a nut, and is adapted to be radially expanded by axial displacement relatively to the expansion member, and which is supported on the expansion member only with a front conical portion of its internal corrugation crests.
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