Method and apparatus for manufacturing slow-wave structures for

Details Method and apparatus for manufacturing slow-wave structures for Method and apparatus for manufacturing slow-wave structures for

1987-11-04

1988-12-20

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

29600, 219 69R, 219 69E, 219 69M, B23H 100, B23H 900

Patent

active

047926546

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

REFERENCES:
patent: 3562702 (1971-02-01), Celovsky
patent: 3600546 (1971-08-01), Niwa et al.
patent: 3640181 (1972-02-01), Whitfill, Jr.
patent: 3840718 (1974-10-01), Myers
patent: 4268778 (1981-05-01), Friz
patent: 4465987 (1984-08-01), Manoly
patent: 4729510 (1988-03-01), Landis

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