JPS57103226A - Manufacture of cathode supporting structure - Google Patents

Manufacture of cathode supporting structure

Info

Publication number
JPS57103226A
JPS57103226A JP17727080A JP17727080A JPS57103226A JP S57103226 A JPS57103226 A JP S57103226A JP 17727080 A JP17727080 A JP 17727080A JP 17727080 A JP17727080 A JP 17727080A JP S57103226 A JPS57103226 A JP S57103226A
Authority
JP
Japan
Prior art keywords
bead support
portions
projections
deviated
center
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP17727080A
Other languages
Japanese (ja)
Other versions
JPS648423B2 (en
Inventor
Hidemasa Komoro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17727080A priority Critical patent/JPS57103226A/en
Publication of JPS57103226A publication Critical patent/JPS57103226A/en
Publication of JPS648423B2 publication Critical patent/JPS648423B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

PURPOSE:To facilitate holding the accuracy of the height of projections and improve workability, by forming through pressing process plural number being of projections on the curved portion of a bead support, being deviated from its center and in the same direction. CONSTITUTION:Curved portions 11, 21, slant face portions 12, 22 and plane portions 13, 23 for forming respectively the curved portion 31, the slant face portion 32 and the plane portion 33 of a bead support 30 are formed on a lower die 10 and an upper die 20 respectively in the relation of a male to a female. Furthermore, escape holes 14a, 14b are drilled in the positions of the curved portion 11 of the lower die 10 being deviated from the center of curvature, and arc-like projecting portions 24a, 24b are formed on the positions of the upper die 20 corresponding to the escape holes 14a, 14b. Projections 34a, 34b can be formed on the positions deviated from the center of curvature of the bead support 30 and moreover in the same direction at the same time of forming the bead support 30, by pressing a flat plate with these lower die 10 and upper die 20.
JP17727080A 1980-12-17 1980-12-17 Manufacture of cathode supporting structure Granted JPS57103226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17727080A JPS57103226A (en) 1980-12-17 1980-12-17 Manufacture of cathode supporting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17727080A JPS57103226A (en) 1980-12-17 1980-12-17 Manufacture of cathode supporting structure

Publications (2)

Publication Number Publication Date
JPS57103226A true JPS57103226A (en) 1982-06-26
JPS648423B2 JPS648423B2 (en) 1989-02-14

Family

ID=16028112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17727080A Granted JPS57103226A (en) 1980-12-17 1980-12-17 Manufacture of cathode supporting structure

Country Status (1)

Country Link
JP (1) JPS57103226A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60140351U (en) * 1984-02-28 1985-09-17 株式会社東芝 Electron gun parts assembly structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60140351U (en) * 1984-02-28 1985-09-17 株式会社東芝 Electron gun parts assembly structure

Also Published As

Publication number Publication date
JPS648423B2 (en) 1989-02-14

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