| 摘要 |
<p>A thread-cutting die is provided for external thread cutting machines, for cutting tapered threads into ribbed concrete-reinforcing rods, or the like. The die has an attachment part for the retention thereof in a cutter-carrier where the die is supported on a bearing surface; a cutting part comprising cutting teeth located in a cutting surface; and a guiding part with teeth located in a guiding surface to guide the thread-cutting die in the thread already cut into the ribbed concrete-reinforcing rods by the cutting part. The length of the guiding part, as measured in the longitudinal direction of the thread-cutting die, is about three to six times the length of the cutting part and about ten to twenty times the corresponding length of the cutting surface.</p> |
