JPS5711451A - Manufacture of electrode element - Google Patents
Manufacture of electrode elementInfo
- Publication number
- JPS5711451A JPS5711451A JP8455880A JP8455880A JPS5711451A JP S5711451 A JPS5711451 A JP S5711451A JP 8455880 A JP8455880 A JP 8455880A JP 8455880 A JP8455880 A JP 8455880A JP S5711451 A JPS5711451 A JP S5711451A
- Authority
- JP
- Japan
- Prior art keywords
- punched
- holes
- thickness
- metal plate
- punching
- 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
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
- H01J9/18—Assembling together the component parts of electrode systems
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
PURPOSE:To improve the characteristics of an element due to enhanced accuracy of hole dimension by punching to a specific thickness of a metal plate on which electron beams holes are to be provided, pressing it to recover the original state, and punching to form desired holes. CONSTITUTION:A metal plate 81 is punched using an outline punching die 821, stopper 831, and outline punching punch 841 to the thickness of 2/3 of the plate, and a pressure is applied on both sides of the metal plate 81 to restore the punched portion nearly to the original state. Then the metal plate 81 is punched using both side hole punching die 822, punches 842, and a stopper 832 to the thickness of 2/3 of the plate, and a pressure applied on both sides of the plate to move the punched portions nearly to the original state. Then three holes are punched completely using a central hole punching punch 843 and punches 842. Thus holes with high accuracy and without the deformations such as swelling and tilting and change of thickness can be formed, and the enlargement of an electron lens diameter and improvement of focus quality of an electron gun can be attained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8455880A JPS5711451A (en) | 1980-06-24 | 1980-06-24 | Manufacture of electrode element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8455880A JPS5711451A (en) | 1980-06-24 | 1980-06-24 | Manufacture of electrode element |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5711451A true JPS5711451A (en) | 1982-01-21 |
JPH0142101B2 JPH0142101B2 (en) | 1989-09-11 |
Family
ID=13833963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8455880A Granted JPS5711451A (en) | 1980-06-24 | 1980-06-24 | Manufacture of electrode element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5711451A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59165344A (en) * | 1983-03-11 | 1984-09-18 | Toshiba Corp | Electron gun for cathode ray tube |
JPS6047347A (en) * | 1983-08-24 | 1985-03-14 | Toshiba Corp | Method of manufacturing parts of electron gun |
JPS60124328A (en) * | 1983-12-09 | 1985-07-03 | Hitachi Ltd | Machining process for electrode parts of electron gun |
KR20020005390A (en) * | 2000-06-22 | 2002-01-17 | 가나이 쓰토무 | Cathode-ray tube and flat electrode of electronic gun and production method |
-
1980
- 1980-06-24 JP JP8455880A patent/JPS5711451A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59165344A (en) * | 1983-03-11 | 1984-09-18 | Toshiba Corp | Electron gun for cathode ray tube |
JPS6047347A (en) * | 1983-08-24 | 1985-03-14 | Toshiba Corp | Method of manufacturing parts of electron gun |
JPS60124328A (en) * | 1983-12-09 | 1985-07-03 | Hitachi Ltd | Machining process for electrode parts of electron gun |
JPH0576734B2 (en) * | 1983-12-09 | 1993-10-25 | Hitachi Ltd | |
KR20020005390A (en) * | 2000-06-22 | 2002-01-17 | 가나이 쓰토무 | Cathode-ray tube and flat electrode of electronic gun and production method |
Also Published As
Publication number | Publication date |
---|---|
JPH0142101B2 (en) | 1989-09-11 |
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