JPS5711451A - Manufacture of electrode element - Google Patents

Manufacture of electrode element

Info

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
Application number
JP8455880A
Other languages
Japanese (ja)
Other versions
JPH0142101B2 (en
Inventor
Takumi Tonai
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8455880A priority Critical patent/JPS5711451A/en
Publication of JPS5711451A publication Critical patent/JPS5711451A/en
Publication of JPH0142101B2 publication Critical patent/JPH0142101B2/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
    • H01J9/18—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.
JP8455880A 1980-06-24 1980-06-24 Manufacture of electrode element Granted JPS5711451A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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