JPH0121583B2 - - Google Patents
Info
- Publication number
- JPH0121583B2 JPH0121583B2 JP9873479A JP9873479A JPH0121583B2 JP H0121583 B2 JPH0121583 B2 JP H0121583B2 JP 9873479 A JP9873479 A JP 9873479A JP 9873479 A JP9873479 A JP 9873479A JP H0121583 B2 JPH0121583 B2 JP H0121583B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- burring
- cylindrical
- processing
- inner diameter
- 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 31
- 238000010409 ironing Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 238000003672 processing method Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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
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 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.
従来のインライン式電子銃の電極部の構造は、
第１図に示すように電子ビームを制御する第１グ
リツド１、前記電子ビームを加速する第２グリツ
ド２および主レンズ電極を構成する第３、第４、
第５、第６グリツド３，４，５，６などが直列に
設けられてビードガラス７に固定され、これら各
グリツドにより電子ビームは所定のけい光体スト
ライプに射突されるようになつている。 The structure of the electrode part of a conventional in-line electron gun is
As shown in FIG. 1, there is a first grid 1 for controlling the electron beam, a second grid 2 for accelerating the electron beam, and third and fourth grids constituting the main lens electrode.
Fifth and sixth grids 3, 4, 5, 6, etc. are provided in series and fixed to the bead glass 7, and each of these grids allows the electron beam to strike a predetermined phosphor stripe. .
前記主レンズ電極となる第５グリツド５は、底
部に３個の円孔状のレンズ部８ａ，８ｂ，８ｃが
近接して並んで一体成形された２個の異形状カツ
プ絞り品８を、その開放端側が互いに接合するよ
うに組合わされており、これらのレンズ部８ａ〜
８ｃには円筒状の補助電極９が同軸的に固設され
ている。補助電極９は第５グリツド５内に形成さ
れる電界に第５グリツド５の側壁の影響を与えな
いように設けられるもので、本来前記レンズ部８
ａ〜８ｃの円筒部が長く形成されれば必要ないも
のである。 The fifth grid 5, which serves as the main lens electrode, has two irregularly shaped cup-drawn products 8, each of which has three circular hole-shaped lens parts 8a, 8b, 8c closely arranged and integrally molded on the bottom thereof. These lens parts 8a~
A cylindrical auxiliary electrode 9 is coaxially fixed to 8c. The auxiliary electrode 9 is provided so that the electric field formed within the fifth grid 5 is not affected by the side wall of the fifth grid 5, and is originally the lens part 8.
This is not necessary if the cylindrical portions a to 8c are formed long.
そこで従来、長い円筒部を有するレンズ部を一
体成形して主レンズ電極を製作することが試みら
れている。この加工を第２図によつて説明する。
まずＡに示すように素材板１０に穴抜き加工によ
つて所定内径d0を有する下穴１１を３個形成し、
次いでＢに示すように張り出し加工１２を行な
う。次にＣに示すようにしごきを伴う張り出し加
工１３を行なう。このしごきを伴う張り出し加工
１３はダイとポンチの隙間を除々に小さくしなが
ら複数工程で行なつていく。この結果、張り出し
肉厚は漸次薄くなりながら高さが高くなる。次に
Ｄに示すようにバーリング用下穴１４を施し、続
いてＥに示すようにバーリング加工により円筒部
１５ａ，１５ｂ，１５ｃを有するレンズ部８ａ，
８ｂ，８ｃを形成する。最後にＦに示すように異
形状絞り部１６を一体成形する。 Therefore, conventional attempts have been made to manufacture a main lens electrode by integrally molding a lens portion having a long cylindrical portion. This processing will be explained with reference to FIG.
First, as shown in A, three prepared holes 11 having a predetermined inner diameter d 0 are formed in the material plate 10 by drilling,
Next, as shown in B, an overhanging process 12 is performed. Next, as shown in C, a stretching process 13 involving ironing is performed. This stretching process 13 that involves ironing is performed in multiple steps while gradually reducing the gap between the die and punch. As a result, the overhang thickness gradually becomes thinner and the height increases. Next, as shown in D, a pilot hole 14 for burring is formed, and then as shown in E, a lens part 8a having cylindrical parts 15a, 15b, and 15c is formed by burring processing.
8b and 8c are formed. Finally, as shown in F, the irregularly shaped drawn portion 16 is integrally molded.
しかしながらこの方法では、円筒部高さｈは内
径ｄに対して0.3倍程度が限度であつた。そこで、
更に円筒部高さｈを向上させるには、しごきを伴
う張り出し加工時のポンチとダイの隙間を更に小
さくして高さをかせぐことが必要となる。しかし
この場合、しごきを伴う張り出し加工時に張り出
し下穴縁部周辺にくびれおよび破断が発生し、こ
れによりバーリング加工による円筒部端面にくび
れおよび破断が発生し、実用に供し得ない。そこ
で従来は、第１図に示すように補助電極９を用い
ているのが実状である。 However, in this method, the height h of the cylindrical portion is limited to about 0.3 times the inner diameter d. Therefore,
In order to further increase the height h of the cylindrical part, it is necessary to further reduce the gap between the punch and the die during elongation processing that involves ironing to increase the height. However, in this case, constrictions and fractures occur around the edge of the pre-expanded hole during the overhang process that involves ironing, and constrictions and fractures occur on the end surface of the cylindrical portion due to the burring process, making it impossible to put it to practical use. Therefore, conventionally, an auxiliary electrode 9 is used as shown in FIG.
本発明は上記従来技術の欠点に鑑みなされたも
ので、部品および組立工数の低減ならびに精度向
上を図るために、十分な高さの円筒部を有するレ
ンズ部が一体形成された電子銃用電極の加工方法
を提供することを目的とする。 The present invention has been made in view of the above-mentioned drawbacks of the prior art, and aims to reduce parts and assembly man-hours and improve accuracy. The purpose is to provide a processing method.
以下、本発明を図示の実施例により説明する。 Hereinafter, the present invention will be explained with reference to illustrated embodiments.
第３図は本発明の一実施例の方法により製造さ
れた電子銃の電極である第５グリツド２０の一実
施例を示し、２個の異形状カツプ絞り品２１の開
放端側が互いに接合するように組合わされてい
る。前記異形状カツプ絞り品２１の底面２２には
一直線に近接して３個の円筒部２３ａ，２３ｂ，
２３ｃを有するレンズ部２４ａ，２４ｂ，２４ｃ
が平板状の部材から一体形成されている。また３
個の円筒部２３ａ〜２３ｃの高さｈはその内径ｄ
に対して同時に0.5ｈ／ｄ0.7を満足するよう
に一体成形されている。 FIG. 3 shows an embodiment of the fifth grid 20, which is an electrode for an electron gun, manufactured by the method of the embodiment of the present invention, in which the open end sides of two irregularly shaped cup drawn products 21 are joined to each other. is combined with The bottom surface 22 of the irregularly shaped cup drawn product 21 has three cylindrical portions 23a, 23b,
Lens parts 24a, 24b, 24c having 23c
is integrally formed from a flat plate-like member. Also 3
The height h of the cylindrical portions 23a to 23c is the inner diameter d.
It is integrally molded to satisfy 0.5h/d0.7 at the same time.
次にかかる電極を製作する本発明の加工方法の
一実施例を第４図によつて説明する。まずＡに示
すように素材板１０に従来と同様に穴抜き加工３
０により所定の内径d0を有する下穴３１を形成す
る。次にＢに示すように下穴縁部かえり側３２を
テーパ状にコイニング加工３３を行なう。次にＣ
に示すようにしごきを伴う張り出し加工３４を行
なう。このしごきを伴う張り出し加工３４はダイ
の内径を一定とし、ポンチの外径を除々に大き
く、すなわちダイとポンチの隙間を除々に小さく
しながら複数工程で行なつていく。この場合、被
加工物の円筒部の天頂面には材料の流動を制限す
るような圧縮力は付加しない。このようにＢで示
すコイニング加工３３で張り出し下穴縁部かえり
側３２の破断面をかえり側から圧縮するため、ノ
ツチ（切欠き）効果がなくなり、次のしごきを伴
う張り出し加工３４の時に張り出し部下穴縁３５
の伸び変形能を回復させる。この結果、張り出し
肉厚は漸次薄くなりながら高さが高くなり、張り
出し部下穴縁３５にくびれおよび破断の発生なし
に成形することができる。その後は従来と同様な
工程で加工する。すなわち、Ｄに示すように穴抜
き加工３６によりバーリング用下穴３７を形成す
る。続いてＥに示すようにバーリング加工３８を
施し、円筒部２３ａ，２３ｂ，２３ｃを有するレ
ンズ部２４ａ，２４ｂ，２４ｃを形成する。最後
にＦに示すように異形状カツプ絞り部３９を一体
成形すると、異形状カツプ絞り品２１が得られ
る。 Next, an embodiment of the processing method of the present invention for manufacturing such an electrode will be described with reference to FIG. First, as shown in A, the material plate 10 is punched 3 in the same manner as before.
0 to form a prepared hole 31 having a predetermined inner diameter d 0 . Next, as shown in B, a coining process 33 is performed on the burr side 32 of the edge of the prepared hole into a tapered shape. Next, C
Stretching process 34 is performed as shown in FIG. This stretching process 34 accompanied by ironing is performed in multiple steps while keeping the inner diameter of the die constant and gradually increasing the outer diameter of the punch, that is, gradually reducing the gap between the die and the punch. In this case, no compressive force that would restrict the flow of the material is applied to the zenith surface of the cylindrical portion of the workpiece. In this way, in the coining process 33 shown by B, the fractured surface of the burr side 32 of the edge of the overhang pilot hole is compressed from the burr side, so the notch effect disappears, and during the next coining process 34 that involves ironing, the overhang bottom part is compressed. Hole edge 35
Recovers the elongation deformability of. As a result, the overhang wall thickness becomes gradually thinner and the height becomes higher, and it is possible to form the overhang lower hole edge 35 without constricting or breaking. After that, it is processed using the same process as before. That is, as shown in D, a pilot hole 37 for burring is formed by punching 36. Subsequently, as shown in E, a burring process 38 is performed to form lens parts 24a, 24b, and 24c having cylindrical parts 23a, 23b, and 23c. Finally, as shown in F, the irregularly shaped cup drawn portion 39 is integrally molded to obtain the irregularly shaped cup drawn product 21.
このように、Ｂで示すコイニング加工３３で張
り出し下穴縁部かえり側３２の破断面を圧縮し、
これによりしごきを伴う張り出し加工３４時の張
り出し部下穴縁３５の伸び変形能を回復させるの
で、張り出し部下穴縁３５の周辺にくびれおよび
破断が発生しない。このため、バーリング加工３
８によつてもくびれおよび破断が発生しなく、高
いバーリング高さを得ることができる。実験の結
果、板厚0.4mmのオーステナイト系のステンレス
において、円筒部高さｈは内径ｄに対して0.55d
程度得られた。 In this way, the fractured surface of the overhanging prepared hole edge burr side 32 is compressed by the coining process 33 shown by B,
This restores the elongation deformability of the overhanging lower hole edge 35 during the stretching process 34 that involves ironing, so that constriction and breakage do not occur around the overhanging lower hole edge 35. For this reason, burring process 3
8, constriction and breakage do not occur, and a high burring height can be obtained. As a result of the experiment, in austenitic stainless steel with a plate thickness of 0.4 mm, the height h of the cylindrical part is 0.55 d relative to the inner diameter d.
degree was obtained.
第５図は本発明の他の実施例を示す。本実施例
は第４図Ｃに示すしごきを伴なつた張り出し加工
時に下穴のある張り出し円筒部の天頂面４０に、
たとえば第６図に示すように圧縮ばね５０を介し
て圧縮板５１を当接し１〜４Kg／mm2以上の圧縮力
σ1を負荷した状態で成形する。一方、張り出し円
筒部の内面には張り出しポンチによる圧縮力σ2が
生じて加工される。なお、第６図において５３は
ダイ、５４はノツクアウト、５５はばねである。
このように圧力を加えた状態でしごきを伴つた張
り出し加工４１を行なうと、材料の流動が制限さ
れ、材料の有する固有値の伸びより伸びがよくな
り、高いバーリング高さが得られる。第４図Ｂに
示すコイニング加工３３の後に、第５図及び第６
図に示すように圧力を加えた状態でしごきを伴う
張り出し加工４１を行なつたところ、円筒部高さ
ｈは内径ｄに対して0.7d程度となり、一層高いバ
ーリング高さが得られた。 FIG. 5 shows another embodiment of the invention. In this embodiment, the zenith surface 40 of the overhanging cylindrical part with the prepared hole is
For example, as shown in FIG. 6, a compression plate 51 is brought into contact with a compression spring 50 and a compression force σ 1 of 1 to 4 kg/mm 2 or more is applied thereto. On the other hand, a compressive force σ 2 is generated on the inner surface of the overhanging cylindrical portion by the overhanging punch and the work is performed. In FIG. 6, 53 is a die, 54 is a knockout, and 55 is a spring.
When the stretching process 41 is performed with ironing while applying pressure in this manner, the flow of the material is restricted, the elongation is better than the elongation of the material's natural value, and a high burring height is obtained. After the coining process 33 shown in FIG. 4B, as shown in FIGS.
As shown in the figure, when the bulging process 41 was performed with ironing under pressure, the height h of the cylindrical portion was approximately 0.7d relative to the inner diameter d, and a higher burring height was obtained.
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。 In the above embodiments, an in-line type electrode is used as the electron gun electrode, but a delta type electrode is also applicable.
以上の説明から明らかな如く、本発明になる電
極の加工方法によれば、３個の円筒部の高さをそ
の内径の約0.5〜0.7倍としたレンズ部を一体成形
してなるので、部品数および組立工数の低減が図
れ、安価な電子銃が得られる。また本発明になる
加工方法は単にコイニング加工を追加するのみで
よく、このコイニング加工は切粉がでなく、加工
スピードも速くて量産上からも優れており、順送
り型およびトランス型などの自動プレス型による
連続生産が可能で、この点からもコストダウンが
図れる。 As is clear from the above explanation, according to the electrode processing method of the present invention, the lens parts are integrally molded, and the height of the three cylindrical parts is about 0.5 to 0.7 times the inner diameter. The number and assembly man-hours can be reduced, and an inexpensive electron gun can be obtained. In addition, the processing method of the present invention only requires the addition of coining processing, and this coining processing does not generate chips, has a fast processing speed, and is excellent in terms of mass production. Continuous production using molds is possible, which also helps reduce costs.
第１図は従来のインライン式電子銃の平面図お
よび一部破断側面図、第２図Ａ，Ｂ，Ｃ，Ｄ，
Ｅ，Ｆは従来の電極の加工方法を工程順に示す説
明図、第３図は本発明の一実施例の方法により製
造された電極の一例を示す縦断面図、第４図Ａ，
Ｂ，Ｃ，Ｄ，Ｅ，Ｆは本発明になる電極の加工方
法の一実施例を工程順に示す説明図、第５図及び
第６図は本発明になる電極の加工方法の他の実施
例を示す説明図である。
１０……素材板、２０……第５グリツド、２１
……異形状カツプ絞り品、２２……底面、２３ａ
〜２３ｃ……円筒部、２４ａ〜２４ｃ……レンズ
部、３０……穴抜き加工、３１……下穴、３２…
…下穴縁部かえり側、３３……コイニング加工、
３４……しごきを伴う張り出し加工、３５……張
り出し部下穴縁、３６……穴抜き加工、３７……
バーリング用下穴、３８……バーリング加工、３
９……異形状カツプ絞り部、４０……天頂面、４
１……しごきを伴う張り出し加工。
Figure 1 is a plan view and partially cutaway side view of a conventional in-line electron gun, Figure 2 is A, B, C, D,
E and F are explanatory diagrams showing the conventional electrode processing method in the order of steps, FIG. 3 is a longitudinal cross-sectional view showing an example of an electrode manufactured by the method of one embodiment of the present invention, and FIGS.
B, C, D, E, and F are explanatory diagrams showing one embodiment of the electrode processing method according to the present invention in the order of steps, and FIGS. 5 and 6 are other embodiments of the electrode processing method according to the present invention. FIG. 10...Material board, 20...Fifth grid, 21
...Irregular-shaped cup drawing product, 22...Bottom surface, 23a
~23c...Cylindrical part, 24a-24c...Lens part, 30...Drilling, 31...Prepared hole, 32...
...Prepared hole edge burr side, 33...Coining processing,
34... Overhanging process with ironing, 35... Edge of overhanging lower hole, 36... Hole punching process, 37...
Prepared hole for burring, 38... Burring processing, 3
9... Unusual cup drawing part, 40... Zenith surface, 4
1... Overhanging process that involves squeezing.
Claims (1)
の高さを該円筒部の内径の約0.5〜0.7倍とした電
子銃用電極の加工方法において、素材板に所定の
内径を有する下穴を３個形成し、次いでこの下穴
縁部かえり側をテーパ状にコイニング加工を行な
い、続いてしごきを伴う張り出し加工を行ない、
その後前記下穴部にバーリング下穴を加工し、続
いてバーリング加工を行なつて３個の円筒部を一
体形成することを特徴とする電子銃用電極の加工
方法。 ２ 近接した３個の円筒部を有し、かつ該円筒部
の高さを該円筒部の内径の約0.5〜0.7倍とした電
子銃用電極の加工方法において、素材板に所定の
内径を有する下穴を３個形成し、次いでこの下穴
縁部かえり側をテーパ状にコイニング加工を行な
い、続いて張り出し円筒部の天頂面に圧縮荷重を
付加した状態でしごきを伴なう張り出し加工を行
い、その後前記下穴部にバーリング下穴を加工
し、続いてバーリング加工を行なつて３個の円筒
部を一体形成することを特徴とする電子銃用電極
の加工方法。[Scope of Claims] 1. A method for processing an electrode for an electron gun, which has three cylindrical parts adjacent to each other, and the height of the cylindrical parts is approximately 0.5 to 0.7 times the inner diameter of the cylindrical parts. Three prepared holes having a predetermined inner diameter are formed in the hole, and then the burr side of the prepared hole edge is coined into a tapered shape, and then an overhanging process is performed with ironing,
A method of processing an electrode for an electron gun, characterized in that a burring pilot hole is then formed in the pilot hole portion, and then burring is performed to integrally form three cylindrical portions. 2. In a method for processing an electrode for an electron gun, which has three adjacent cylindrical parts and the height of the cylindrical parts is about 0.5 to 0.7 times the inner diameter of the cylindrical parts, the material plate has a predetermined inner diameter. Three pilot holes are formed, and then the burr side of the edge of the pilot hole is coined into a tapered shape, followed by an overhanging process that involves ironing while applying a compressive load to the zenith surface of the overhanging cylindrical part. A method for processing an electrode for an electron gun, characterized in that a burring pilot hole is then formed in the pilot hole portion, and then burring is performed to integrally form three cylindrical portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9873479A JPS5624741A (en) | 1979-08-03 | 1979-08-03 | Electrode for electron gun and its machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9873479A JPS5624741A (en) | 1979-08-03 | 1979-08-03 | Electrode for electron gun and its machining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5624741A JPS5624741A (en) | 1981-03-09 |
| JPH0121583B2 true JPH0121583B2 (en) | 1989-04-21 |
Family
ID=14227733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9873479A Granted JPS5624741A (en) | 1979-08-03 | 1979-08-03 | Electrode for electron gun and its machining method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5624741A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58128627A (en) * | 1982-01-27 | 1983-08-01 | Toshiba Corp | Manufacturing method of electrode for electron gun |
-
1979
- 1979-08-03 JP JP9873479A patent/JPS5624741A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5624741A (en) | 1981-03-09 |
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