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JPS5566840A - Electrode of electron gun and working method thereof - Google Patents

Electrode of electron gun and working method thereof

Info

Publication number
JPS5566840A
JPS5566840A JP13990978A JP13990978A JPS5566840A JP S5566840 A JPS5566840 A JP S5566840A JP 13990978 A JP13990978 A JP 13990978A JP 13990978 A JP13990978 A JP 13990978A JP S5566840 A JPS5566840 A JP S5566840A
Authority
JP
Japan
Prior art keywords
work
cylinder part
lenses
38aw38c
burring
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.)
Pending
Application number
JP13990978A
Other languages
Japanese (ja)
Inventor
Minoru Yabe
Shigeharu Hatayama
Mamoru Ikeda
Satoru Endo
Masaaki Yamauchi
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 JP13990978A priority Critical patent/JPS5566840A/en
Publication of JPS5566840A publication Critical patent/JPS5566840A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To scheme to reduce the number of components and fabrication man- hour and improve accuracy by forming integrally the lenses part having sufficient height cylinder part.
CONSTITUTION: A lower hole 32 is formed on a material plate 30 through drilling work 31. Then projection work 33 is performed. Then projection work 34 with drawing is performed. The thickness of projected body is made thinner gradually and the height increases. Then the lower hole 36 for burring is formed through drilling work 35. In the last stage, if burring work 37 is processed, the lenses parts 39aW39c having cylinder part 38aW38c are formed. Thus the thickness of the plate at the root of the contiguous cylinder part 38aW38c can be suppressed, and the lenses part having sufficient height of cylinder part in performance can be formed without injuring the flatness of the periphery of the opening part.
COPYRIGHT: (C)1980,JPO&Japio
JP13990978A 1978-11-15 1978-11-15 Electrode of electron gun and working method thereof Pending JPS5566840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13990978A JPS5566840A (en) 1978-11-15 1978-11-15 Electrode of electron gun and working method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13990978A JPS5566840A (en) 1978-11-15 1978-11-15 Electrode of electron gun and working method thereof

Publications (1)

Publication Number Publication Date
JPS5566840A true JPS5566840A (en) 1980-05-20

Family

ID=15256447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13990978A Pending JPS5566840A (en) 1978-11-15 1978-11-15 Electrode of electron gun and working method thereof

Country Status (1)

Country Link
JP (1) JPS5566840A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2488042A1 (en) * 1980-08-01 1982-02-05 Hitachi Ltd METHOD FOR FORMING ELECTRODES OF AN ELECTRON GUN
US4481003A (en) * 1980-01-18 1984-11-06 Hitachi, Ltd. Method of producing itegral electrode structure for electron gun

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481003A (en) * 1980-01-18 1984-11-06 Hitachi, Ltd. Method of producing itegral electrode structure for electron gun
FR2488042A1 (en) * 1980-08-01 1982-02-05 Hitachi Ltd METHOD FOR FORMING ELECTRODES OF AN ELECTRON GUN
DE3130120A1 (en) * 1980-08-01 1982-04-01 Hitachi, Ltd., Tokyo METHOD FOR PRODUCING AN ELECTRONIC CANNON FOR A COLOR PIPE
DE3130120C2 (en) * 1980-08-01 1984-07-12 Hitachi, Ltd., Tokio/Tokyo Method and apparatus for producing an electrode for the electron gun of a color picture tube

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