JPS6149778B2 - - Google Patents
Info
- Publication number
- JPS6149778B2 JPS6149778B2 JP14648478A JP14648478A JPS6149778B2 JP S6149778 B2 JPS6149778 B2 JP S6149778B2 JP 14648478 A JP14648478 A JP 14648478A JP 14648478 A JP14648478 A JP 14648478A JP S6149778 B2 JPS6149778 B2 JP S6149778B2
- Authority
- JP
- Japan
- Prior art keywords
- burring
- electron gun
- electrode
- lens
- pilot hole
- 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
Links
- 238000000034 method Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003672 processing method Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Description
【発明の詳細な説明】
本発明はカラーブラウン管に用いられる電子銃
の主レンズ電極部の加工方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of processing a main lens electrode portion of an electron gun used in a color cathode ray tube.
周知の如く、電子銃にはインライン式とデルタ
式とがあるが、以下インライン式電子銃を例にと
つて説明する。 As is well known, there are two types of electron guns: in-line type and delta type.The in-line type electron gun will be explained below as an example.
一般に一体インライン電子銃の主レンズ電極部
は第１図および第２図に示すように、非磁性不銹
鋼を用いた長円形筒状をなす電極本体１の頂板２
にバーリング加工により近接して形成された３個
のレンズ部３を有する構造となつている。 In general, the main lens electrode part of an integrated in-line electron gun is as shown in FIGS.
It has a structure in which three lens parts 3 are formed adjacent to each other by burring.
従来、レンズ部３を形成するには、まず電極本
体１をプレス成形し、次いでその頂板２に第３図
ａに示すようにｄなる外径寸法を有するポンチ４
を用いてバーリング用下穴５を形成し、更に第３
図ｂに示すように頂板２をバーリングダイ６上に
載置しＤなる外径寸法を有するバーリングポンチ
７でバーリング加工を施し３個の筒状のレンズ部
３を形成する方法が行なわれていた。 Conventionally, in order to form the lens portion 3, the electrode body 1 is first press-molded, and then a punch 4 having an outer diameter dimension d is attached to the top plate 2 as shown in FIG. 3a.
to form the pilot hole 5 for burring, and then the third
As shown in Figure b, the top plate 2 was placed on a burring die 6 and burred with a burring punch 7 having an outer diameter of D to form three cylindrical lens parts 3. .
しかしこのような従来の加工方法においては、
第３図ｂに示すようにバーリングポンチ７がレン
ズ部３内に位置している時点では、レンズ部３の
内径がバーリングポンチ７の外径Ｄに等しくなつ
ているが、バーリングポンチ７を抜きとつた後
は、第４図に示すようにレンズ部３の先端部の内
径がバーリングポンチ７の外径Ｄより小さい寸法
D′となり、レンズ部３の円筒度ならびに真円度
がともに悪化するという欠点があつた。また上記
従来の加工方法におけるバーリング穴拡げ率d/D
は68％が限界とされており、形成し得るレンズ部
の高さＨは最大1.3mm程度であつた。一方一体イ
ンライン電子銃において主レンズ電極の役割を十
分に果すには、レンズ部７の内径対高さの比H/D
を0.5以上にする必要があり、そのためにはバー
リング穴拡げ率を12％以下にする必要がある。し
かし従来の加工方法により前記のような高いバー
リング穴拡げ率を得ることは極めて困難なことで
あつた。 However, in such conventional processing methods,
As shown in FIG. 3b, when the burring punch 7 is located inside the lens part 3, the inner diameter of the lens part 3 is equal to the outer diameter D of the burring punch 7. 4, the inner diameter of the tip of the lens part 3 is smaller than the outer diameter D of the burring punch 7.
D', and there was a drawback that both the cylindricity and roundness of the lens portion 3 deteriorated. Also, the burring hole expansion rate d/D in the above conventional processing method
The maximum height H of the lens portion that can be formed is about 1.3 mm. On the other hand, in order to fully play the role of the main lens electrode in an integrated in-line electron gun, the ratio of the inner diameter to the height of the lens part 7 H/D
It is necessary to make it 0.5 or more, and for that purpose, the burring hole expansion ratio needs to be 12% or less. However, it has been extremely difficult to obtain such a high burring hole expansion rate using conventional processing methods.
そこで従来は、必要なレンズ部高さを得るため
に第５図に示すように別途製作した補助リンク８
をレンズ部３に嵌合固着させ、必要な高さを得る
構造が採用されていた。しかし、このような構造
の場合、補助リンク８をレンズ部３に組込む工程
を必要とし、製造工程が複雑化する一方、レンズ
部３における、円筒度と真円度が悪化し、かつ部
品点数の増加に伴つて電子銃組立精度が悪化し電
子銃の性能を低下させ、しかも製品が高価になる
などの欠点を有していた。 Therefore, conventionally, in order to obtain the necessary height of the lens part, an auxiliary link 8 was separately manufactured as shown in Fig. 5.
A structure was adopted in which the required height was obtained by fitting and fixing the lens part 3 into the lens part 3. However, in the case of such a structure, the process of assembling the auxiliary link 8 into the lens part 3 is required, which complicates the manufacturing process, while at the same time deteriorating the cylindricity and roundness of the lens part 3, and reducing the number of parts. As the number of electronic guns increases, the accuracy of electron gun assembly deteriorates, reducing the performance of the electron gun, and the product becomes more expensive.
本発明は上記従来技術の欠点に鑑み、十分な高
さを有するレンズ部を一体成形可能とし製造工程
を簡略化すると共に、レンズ部の円筒度や真円度
が良好であり電子銃として優れた性能を有し、し
かも安価に製造し得る電子銃の電極本体加工方法
を提供することを目的とするものである。 In view of the above-mentioned drawbacks of the prior art, the present invention enables a lens part having a sufficient height to be integrally molded, thereby simplifying the manufacturing process, and also has good cylindricity and roundness of the lens part, making it excellent as an electron gun. It is an object of the present invention to provide a method for processing an electrode body of an electron gun that has high performance and can be manufactured at low cost.
以下本発明を第６図、第７図に示す実施例によ
り説明する。第６図は本発明の方法により製造さ
れたレンズ部一体成形のインライン電子銃電極１
０を示すもので、電極本体１１の頂板１２に後述
の方法により３個のレンズ部１３が一体的に形成
されている。レンズ部１３の内径寸法Ｄ、高さを
Ｈで表わすことにする。次に第７図によりレンズ
部１３の加工手順について説明すると、まず第７
図ａに示すように電極本体１１の頂板１２に打抜
き加工などによりバーリング用下穴１４を形成す
る。次いでこのバーリング用下穴１４の端面１５
に第７図ｂに示すように面取り部１６を有するコ
イニングポンチ１７を使用してコイニング加工を
行なうことにより面取り部１８を形成する。この
コイニング加工はバーリング用下穴１４の端面１
５に生じている微細なクラツクを除去すると共
に、この部分の加工硬化層をも除去したバーリン
グ穴拡げ率を向上させる役割を果すものである。 The present invention will be explained below with reference to embodiments shown in FIGS. 6 and 7. Figure 6 shows an in-line electron gun electrode 1 integrally molded with a lens part manufactured by the method of the present invention.
0, and three lens portions 13 are integrally formed on the top plate 12 of the electrode body 11 by a method described later. The inner diameter dimension D and the height of the lens portion 13 will be represented by H. Next, the processing procedure of the lens portion 13 will be explained with reference to FIG.
As shown in Figure a, a pilot hole 14 for burring is formed in the top plate 12 of the electrode body 11 by punching or the like. Next, the end surface 15 of this prepared hole 14 for burring
Then, as shown in FIG. 7B, a coining process is performed using a coining punch 17 having a chamfered part 16 to form a chamfered part 18. This coining process is performed on the end surface 1 of the pilot hole 14 for burring.
This serves to improve the burring hole expansion rate by removing the fine cracks occurring in the area 5 and also removing the work-hardened layer in this area.
次いで第７図ｃに示すように前記コイニング加
工により端面処理した側からバーリングポンチ１
９によりバーリング加工を施す。このバーリング
加工はバーリングポンチ外径を10〜15％の割合で
徐々に大きくしながら複数工程で行なつていく。
その結果、バーリング内径も10〜15％の割合で漸
次押し拡げられていくが、この際バーリング周囲
に円周方向の引張り力が付加され、バーリング側
壁２０の肉厚が第７図ａに示す素材厚さt0より
徐々に減少していき、最終的には第７図ｄに示す
ように素材厚t0の1/2程度の厚みｔまで減少され
る。この肉厚の減少分はバーリング高さＨを高め
るために役立てられる。更にバーリングポンチ１
９を抜きとつた際のバーリング先端部の変形をほ
ぼ完全に解消するために、最終バーリング径Ｄは
その直前のバーリング加工工程におけるバーリン
グ径Dnに対し内径比で1.5％以下の押し拡げ率と
なるように設定される。 Next, as shown in FIG.
Perform burring processing in step 9. This burring process is performed in multiple steps while gradually increasing the outside diameter of the burring punch by 10 to 15%.
As a result, the inner diameter of the burring is gradually expanded at a rate of 10 to 15%, but at this time, a tensile force in the circumferential direction is applied around the burring, and the thickness of the burring side wall 20 is increased to the size shown in FIG. 7a. It gradually decreases from the thickness t0 , and is finally reduced to a thickness t, which is about 1/2 of the material thickness t0 , as shown in FIG. 7d. This reduction in wall thickness is used to increase the burring height H. Furthermore, burring punch 1
In order to almost completely eliminate the deformation of the burring tip when removing 9, the final burring diameter D has an expansion ratio of 1.5% or less as an inner diameter ratio with respect to the burring diameter Dn in the immediately preceding burring process. It is set as follows.
なお上記実施例においては、電子銃の電極とし
てインライン式について説明したが、デルタ式に
も同様に適用できるものである。 In the above embodiments, an in-line type electrode has been described as the electron gun electrode, but it can be similarly applied to a delta type electrode.
以上の説明から明らかな如く、本発明によれ
ば、頂板にバーリング用下穴の加工を行ない、次
いで前記バーリング用下穴の端面に面取り加工を
行なつた後バーリング加工により主レンズ電極を
一体的に形成する構成により、性能上十分なバー
リング高さを有するレンズ部を一体成形可能とし
製造工程を簡単化すると共に、円筒度と真円度を
ともに向上させることにより組立精度を格段に向
上させることができる。また生産性を従来に比し
３倍に向上させ、製造コストを約1/3に低減でき
るなど性能上およびコスト上極めて大きな効果を
有する。 As is clear from the above description, according to the present invention, a pilot hole for burring is formed in the top plate, and then the end face of the pilot hole for burring is chamfered, and then the main lens electrode is integrally formed by burring. By forming the lens part into one piece, it is possible to integrally mold a lens part with sufficient burring height for performance, simplifying the manufacturing process, and significantly improving assembly accuracy by improving both cylindricity and roundness. I can do it. It also has extremely significant effects in terms of performance and cost, increasing productivity by three times compared to conventional methods and reducing manufacturing costs by approximately one-third.
第１図は従来の一体インライン電子銃の主レン
ズ電極の一例を示す平面図、第２図は第１図の縦
断面図、第３図ａ，ｂは従来のレンズ部成形方法
の一例を工程順に示す説明図、第４図は第３図
ａ，ｂに示す方法により形成されたレンズ部の形
状を示す拡大断面図、第５図は従来の一体インラ
イン電子銃の主レンズ電極構造を示す縦断面図、
第６図は本発明の方法により得られた一体インラ
イン電子銃主レンズ電極の一例を示す縦断面図、
第７図ａ〜ｄは本発明の一体インライン電子銃主
レンズ電極のレンズ部の加工方法を工程順に示す
拡大説明図である。
１１…電極本体、１２…頂板、１３…レンズ
部、１４…バーリング用下穴、１６…面取り部、
１７…コイニングポンチ、１８…面取り部、１９
…バーリングポンチ。
Fig. 1 is a plan view showing an example of the main lens electrode of a conventional integrated in-line electron gun, Fig. 2 is a vertical sectional view of Fig. 1, and Figs. 4 is an enlarged cross-sectional view showing the shape of the lens portion formed by the method shown in FIGS. 3a and 3b, and FIG. 5 is a vertical cross-sectional view showing the main lens electrode structure of a conventional integrated in-line electron gun. side view,
FIG. 6 is a longitudinal sectional view showing an example of an integrated in-line electron gun main lens electrode obtained by the method of the present invention;
FIGS. 7a to 7d are enlarged explanatory diagrams illustrating a method for processing a lens portion of an integrated in-line electron gun main lens electrode according to the present invention in order of steps. DESCRIPTION OF SYMBOLS 11... Electrode main body, 12... Top plate, 13... Lens part, 14... Prepared hole for burring, 16... Chamfered part,
17... Coining punch, 18... Chamfered part, 19
...burring punch.
Claims (1)
記バーリング用下穴の端面に面取り加工を行なつ
た後バーリング加工により主レンズ電極を一体的
に形成することを特徴とする電子銃の電極部の加
工方法。 ２ バーリング用下穴の端面の面取り加工は、面
取り部を有するコイニングポンチを使用したコイ
ニング加工であることを特徴とする特許請求の範
囲第１項記載の電子銃の電極部の加工方法。 ３ バーリング加工は複数工程からなり、最終工
程におけるバーリング内径を直前の工程に対し内
径比で1.5％増以下にすることを特徴とする特許
請求の範囲第１項記載の電子銃の電極部の加工方
法。[Claims] 1. A pilot hole for burring is formed in the top plate, and then the end face of the pilot hole for burring is chamfered, and then a main lens electrode is integrally formed by burring. How to process the electrode part of an electron gun. 2. The method of processing an electrode portion of an electron gun according to claim 1, wherein the chamfering of the end face of the burring pilot hole is coining using a coining punch having a chamfer. 3. Processing of an electrode part of an electron gun according to claim 1, wherein the burring process consists of a plurality of steps, and the inner diameter of the burring in the final step is increased by 1.5% or less in terms of inner diameter ratio compared to the immediately preceding step. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14648478A JPS5574036A (en) | 1978-11-29 | 1978-11-29 | Work method of processing electrode part of electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14648478A JPS5574036A (en) | 1978-11-29 | 1978-11-29 | Work method of processing electrode part of electron gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5574036A JPS5574036A (en) | 1980-06-04 |
| JPS6149778B2 true JPS6149778B2 (en) | 1986-10-31 |
Family
ID=15408674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14648478A Granted JPS5574036A (en) | 1978-11-29 | 1978-11-29 | Work method of processing electrode part of electron gun |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5574036A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5911176B2 (en) * | 1980-01-18 | 1984-03-14 | 株式会社日立製作所 | Electrode for electron gun |
| JPS5732536A (en) * | 1980-08-01 | 1982-02-22 | Hitachi Ltd | Working method for electrode section of electron gun |
| JPS61296639A (en) * | 1985-06-26 | 1986-12-27 | Hitachi Ltd | Processing method for electrode parts for electron gun |
| JP2554628B2 (en) * | 1986-06-04 | 1996-11-13 | 株式会社東芝 | Method for manufacturing plate-shaped electrode of electron gun for electron tube |
| KR20000009614A (en) * | 1998-07-27 | 2000-02-15 | 구자홍 | Electrode structure of electron gun for color cathode ray tube and its production method |
| WO2000034977A1 (en) * | 1998-12-04 | 2000-06-15 | Hitachi, Ltd. | Electron gun and cathode ray tube using the electron gun |
| JP2008008468A (en) * | 2006-06-30 | 2008-01-17 | Nojima Kakusei Seisakusho:Kk | Piping support metal fittings |
-
1978
- 1978-11-29 JP JP14648478A patent/JPS5574036A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5574036A (en) | 1980-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3548472A (en) | Ignition plug and method for manufacturing a center electrode for the same | |
| JPS6149778B2 (en) | ||
| GB2028913A (en) | Ball-and-socket joint | |
| JPH08117904A (en) | Manufacture of high pressure gas container | |
| JPS6120629A (en) | Burring method | |
| JP4360125B2 (en) | Molding method | |
| JPH0635021B2 (en) | Burring method | |
| KR100474829B1 (en) | Manufacturing method of a cathode strap | |
| JPH0144197Y2 (en) | ||
| JP3136522B2 (en) | Cathode ray tube electron gun electrode | |
| JP3237146B2 (en) | Method of manufacturing forged material, method of forging and method of manufacturing forged material | |
| JPS6329779B2 (en) | ||
| JPS6144575B2 (en) | ||
| EP1113480A2 (en) | Electron gun and production method thereof | |
| JPS58158840A (en) | Grid for c-crt electron gun electrode and its manufacture | |
| JP3768652B2 (en) | Engine valve cold forging method | |
| JPH02155140A (en) | Manufacture of electron gun electrode structure for cathode ray tube | |
| EP0181476B1 (en) | Method and manufacturing a spark plug for internal combustion engines | |
| JPS5887714A (en) | Method of producing electric contactor | |
| JPH0121583B2 (en) | ||
| JPH05258658A (en) | Slitted high temperature cathode tube | |
| RU2053092C1 (en) | Process of joining of enveloping and enveloped parts | |
| JPS61264627A (en) | Manufacture of electron gun electrode | |
| JP3339739B2 (en) | Electron gun electrode, method and apparatus for manufacturing electron gun electrode | |
| GB2074905A (en) | Shaped bodies and their manufacture |