| 摘要 |
<p>A tubular blank (34) from which a slow-wave structure is to be formed is mounted on a mandrel (30) in front of and spaced slightly from an electrode (36) having a predetermined pattern of slots corresponding to areas along the tubular blank (34) from which material is not to be removed. The blank (34) and the electrode (36) are connected to an electrical discharge machine to establish an electrical discharge between the blank (34) and the electrode (36), and the mandrel (30) and the blank (34) carried thereby are simultaneously advanced and rotated past the electrode (36). Portions of the blank (34) adjacent to the non-slotted surface portions of the electrode (36) are removed, while the portions of the blank (34) adjacent to the slots in the electrode (36) are retained.</p> |
