JPH0535530B2 - - Google Patents
Info
- Publication number
- JPH0535530B2 JPH0535530B2 JP24876784A JP24876784A JPH0535530B2 JP H0535530 B2 JPH0535530 B2 JP H0535530B2 JP 24876784 A JP24876784 A JP 24876784A JP 24876784 A JP24876784 A JP 24876784A JP H0535530 B2 JPH0535530 B2 JP H0535530B2
- Authority
- JP
- Japan
- Prior art keywords
- coining
- electrode
- circular
- forming
- cathode ray
- 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.)
- Expired - Lifetime
Links
- 238000010894 electron beam technology Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
Description
【発明の詳細な説明】
［発明の技術分野］
本発明は陰極線管用電極の製造方法に係り、特
に肉厚の比較的厚い電極板に突出部のないコイニ
ングを行ないこのコイニングにより形成された円
形凹部の中心に電子ビーム通過孔部を穿設するよ
うになされた陰極線管用電極の製造方法に関する
ものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a method of manufacturing an electrode for a cathode ray tube, and in particular to a method of manufacturing an electrode for a cathode ray tube, and in particular, a method of manufacturing an electrode for a cathode ray tube, in which a relatively thick electrode plate is coined without a protrusion, and a circular recess formed by the coining is performed. The present invention relates to a method of manufacturing an electrode for a cathode ray tube in which an electron beam passage hole is formed at the center of the electrode.
［発明の技術的背景とその問題点］
例えば26インチFS型カラー受像管に装着され
るインライン形電子銃の第２グリツド電極は第２
図のような構造を有している。[Technical background of the invention and its problems] For example, the second grid electrode of an in-line electron gun attached to a 26-inch FS color picture tube is
It has a structure as shown in the figure.
即ち、幅約７mm、長さ21mm、厚さ約0.65mmのス
テンレス電極板１の一面にコイニングにより等間
隔で一列配設された約２mmφ深さ約0.16mmの円形
コイニング部２1，２2，２3を形成し、この円形
コイニング部２1，２2，２3の中心に電子ビーム
通過孔部３1，３2，３3を穿設して陰極線管用電
極を完成する。 That is, circular coining portions 2 1 , 2 2 , approximately 2 mm in diameter and approximately 0.16 mm in depth are arranged in a row at equal intervals by coining on one side of the stainless steel electrode plate 1 having a width of approximately 7 mm, a length of 21 mm, and a thickness of approximately 0.65 mm . 2 3 are formed, and electron beam passage holes 3 1 , 3 2 , 3 3 are bored in the centers of the circular coining parts 2 1 , 2 2 , 2 3 to complete the cathode ray tube electrode.
然るにこのようにして形成された電極において
は第３図及び第４図に示すようにコイニングによ
り円形コイニング部２1，２2，２3を形成する時
の余肉の逃げ場がなく円形コイニング部２1，２
２，２3の周縁部にふくれあがり４ができる。この
ふくれあがり４の高さは0.03乃至0.04mm程度であ
り、このため電極両面の平行度、平坦度が得られ
ない問題点がある。 However, in the electrode formed in this way, there is no escape for the excess metal when forming the circular coining parts 2 1 , 2 2 , 2 3 by coining, as shown in FIGS. 3 and 4, and the circular coining part 2 is 1,2
A bulge 4 is formed on the periphery of 2 and 2 3 . The height of this bulge 4 is about 0.03 to 0.04 mm, and therefore there is a problem that parallelism and flatness of both surfaces of the electrode cannot be obtained.
この対策として従来コイニング時に行なわれて
いる下孔を設ける方法もあるが、こき場合コイニ
ングで生じた余肉が下孔を収縮させるだけの量が
ないため、下孔が一様に収縮せず、電子ビーム通
過孔部を穿設すると孔欠けを生じるなどの問題点
がある。 As a countermeasure to this problem, there is a method of creating a pilot hole, which is conventionally done when coining, but in the case of coining, there is not enough excess material from coining to shrink the pilot hole, so the pilot hole does not shrink uniformly. When an electron beam passage hole is formed, there are problems such as hole chipping.
［発明の目的］
本発明は上述した諸問題点に鑑みてなされたも
のであり、ふくれあがりを除去するため、更にこ
の部分をコイニングすることにより極めて精度の
良い電極を得ることが可能な陰極線管用電極の製
造方法を提供することを目的としている。[Object of the Invention] The present invention has been made in view of the above-mentioned problems, and provides an electrode for cathode ray tubes that can obtain an extremely accurate electrode by coining this part to remove the bulge. The purpose is to provide a manufacturing method for.
［発明の概要］
即ち、本発明は肉厚の比較的厚い電極板の所定
位置に、第１のコイニングにより所定の径及び深
さからなる円形コイニング部を形成する工程と、
第２のコイニングにより前記円形コイニング部と
同軸かつ前記所定径より径大な深さのより浅いコ
イニング部を形成する工程と、前記円形コイニン
グ部の中心に電子ビーム通過孔部を穿設する工程
とを具備することを特徴としている。[Summary of the Invention] That is, the present invention includes the steps of forming a circular coining portion having a predetermined diameter and depth by first coining at a predetermined position of a relatively thick electrode plate;
forming a shallower coining part coaxial with the circular coining part and having a depth larger than the predetermined diameter by second coining; and drilling an electron beam passage hole in the center of the circular coining part. It is characterized by having the following.
［発明の実施例］
次に本発明の陰極線管用電極の製造方法の一実
施例を第１図により説明する。[Embodiments of the Invention] Next, an embodiment of the method for manufacturing a cathode ray tube electrode of the present invention will be described with reference to FIG.
即ち、幅約７mm、長さ約21mm、厚さ約0.65mmの
ステンレス電極板１１の一面に第１のコイニング
により等間隔で一列配設された約２mmφ、深さ約
0.16mmの円形コイニング部１２1，１２2，１２3を
形成する。 That is, on one surface of the stainless steel electrode plate 11, which has a width of about 7 mm, a length of about 21 mm, and a thickness of about 0.65 mm, a row of about 2 mmφ and a depth of about 2 mm is arranged at equal intervals by the first coining.
Circular coining parts 12 1 , 12 2 , 12 3 of 0.16 mm are formed.
次に第２のコイニングにより円形コイニング部
１２1，１２2，１２3と同軸で約5.2mmφ、深さ０
乃至0.01mmのコイニング部１４1，１４2，１４3を
形成する。このコイニング部は円形コイニング部
１２1，１２2，１２3周縁のふくれあがりを除去
するために行なうので深さは電極面即ち０を含む
ことになる。 Next, by second coining, it is coaxial with the circular coining parts 12 1 , 12 2 , 12 3 and has a diameter of about 5.2 mmφ and a depth of 0.
Coining portions 14 1 , 14 2 , 14 3 with a thickness of 0.01 mm to 0.01 mm are formed. Since this coining portion is performed to remove the bulging of the peripheral edges of the circular coining portions 12 1 , 12 2 , 12 3 , the depth includes the electrode surface, that is, 0.
次に円形コイニング部１２1，１２2，１２3の
中心に電子ビーム通過孔部１３1，１３2，１３3
を穿設して陰極線管用電極を完成する。 Next, electron beam passing holes 13 1 , 13 2 , 13 3 are provided at the centers of the circular coining portions 12 1 , 12 2 , 12 3 .
Complete the electrode for the cathode ray tube.
この陰極線管用電極は第１図を見てもわかるよ
うにコイニング部１４1，１４2，１４3があるた
め電極として所望の平行度、平坦度が得られる。 As can be seen from FIG. 1, this electrode for a cathode ray tube has coining portions 14 1 , 14 2 , and 14 3 so that desired parallelism and flatness can be obtained as an electrode.
上述した実施例はインライン形電子銃の第２グ
リツド電極について述べたが、これに限定される
のではなく、他の陰極線管の電極にもそのまま適
用できることは勿論である。 Although the above-described embodiment has been described with respect to the second grid electrode of an in-line electron gun, the present invention is not limited thereto, and can of course be applied to electrodes of other cathode ray tubes.
［発明の効果］
上述のように本発明によれば高精度が要求され
ている電極を簡単に提供できる。[Effects of the Invention] As described above, according to the present invention, an electrode that requires high precision can be easily provided.
第１図ａは本発明の一実施例の説明用平面図、
第１図ｂは第１図ａをＡ−Ａ線に沿つて切断した
説明用断面図、第２図ａは電極の一例を示す説明
用平面図、第２図ｂは第２図ａをＢ−Ｂ線に沿つ
て切断した説明用断面図、第３図ａは従来例の説
明用平面図、第３図ｂは第３図ａをＣ−Ｃ線に沿
つて切断した説明用断面図、第４図は第３図ｂの
要部拡大図である。
１，１１……電極板、２1，２2，２3，１２1，
１２2，１２3……円形コイニング部、３1，３2，
３3，１３1，１３2，１３3……電子ビーム通過孔
部、１４1，１４2，１４3……コイニング部。
FIG. 1a is an explanatory plan view of an embodiment of the present invention;
Fig. 1b is an explanatory cross-sectional view of Fig. 1a taken along line A-A, Fig. 2a is an explanatory plan view showing an example of the electrode, and Fig. 2b is a cross-sectional view of Fig. 2a taken along line A-A. - An explanatory cross-sectional view taken along line B, FIG. 3 a is an explanatory plan view of the conventional example, and FIG. 3 b is an explanatory cross-sectional view taken along line C-C of FIG. FIG. 4 is an enlarged view of the main part of FIG. 3b. 1, 11... Electrode plate, 2 1 , 2 2 , 2 3 , 12 1 ,
12 2 , 12 3 ... circular coining part, 3 1 , 3 2 ,
3 3 , 13 1 , 13 2 , 13 3 ... electron beam passage hole portion, 14 1 , 14 2 , 14 3 ... coining portion.
Claims (1)
コイニングにより所定の径及び深さからなる円形
コイニング部を形成する工程と、第２のコイニン
グにより前記円形コイニング部と同軸かつ前記所
定径より径大で深さのより浅いコイニング部を形
成する工程と、前記円形コイニング部の中心に電
子ビーム通過孔部を穿設する工程とを具備するこ
とを特徴とする陰極線管用電極の製造方法。1. Forming a circular coining part with a predetermined diameter and depth at a predetermined position of a relatively thick electrode plate by first coining, and forming a circular coining part coaxial with the circular coining part and having the predetermined diameter by second coining. 1. A method of manufacturing an electrode for a cathode ray tube, comprising the steps of: forming a coining portion with a larger diameter and shallower depth; and forming an electron beam passage hole in the center of the circular coining portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24876784A JPS61128443A (en) | 1984-11-27 | 1984-11-27 | Manufacturing method of electrode for cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24876784A JPS61128443A (en) | 1984-11-27 | 1984-11-27 | Manufacturing method of electrode for cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61128443A JPS61128443A (en) | 1986-06-16 |
| JPH0535530B2 true JPH0535530B2 (en) | 1993-05-26 |
Family
ID=17183070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24876784A Granted JPS61128443A (en) | 1984-11-27 | 1984-11-27 | Manufacturing method of electrode for cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61128443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05185921A (en) * | 1991-11-15 | 1993-07-27 | Nabco Ltd | Brake system for multi-shaft trailer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002083558A (en) * | 2000-06-22 | 2002-03-22 | Hitachi Ltd | Cathode-ray tube, electrode for electron gun, and manufacturing method thereof |
-
1984
- 1984-11-27 JP JP24876784A patent/JPS61128443A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05185921A (en) * | 1991-11-15 | 1993-07-27 | Nabco Ltd | Brake system for multi-shaft trailer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61128443A (en) | 1986-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |