JPS6316527A - Method for machining electron gun parts - Google Patents
Method for machining electron gun partsInfo
- Publication number
- JPS6316527A JPS6316527A JP15960186A JP15960186A JPS6316527A JP S6316527 A JPS6316527 A JP S6316527A JP 15960186 A JP15960186 A JP 15960186A JP 15960186 A JP15960186 A JP 15960186A JP S6316527 A JPS6316527 A JP S6316527A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- hole
- burring
- central axis
- low
- 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
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003754 machining Methods 0.000 title abstract description 5
- 238000010894 electron beam technology Methods 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 abstract description 13
- 239000002699 waste material Substances 0.000 abstract 3
- 238000000465 moulding Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 230000005489 elastic deformation Effects 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003672 processing method Methods 0.000 description 4
- 238000005482 strain hardening Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電子銃電極部品の加工方法に係わり、特に電子
ビーム通過円筒の円筒端面が円筒中心軸に対して傾斜し
ている電子銃電極部品の加工方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for processing an electron gun electrode component, and particularly to an electron gun electrode component in which the cylindrical end surface of an electron beam passing cylinder is inclined with respect to the central axis of the cylinder. Regarding the processing method.
カラー受像管用電子銃の両側の電子ビームをけい光体ス
クリーン面上で中央に集中させる。すなわちスタティッ
クコンバーゼンスをとる目的で、主レンズ電極が有する
ビーム通過円筒の端面を円筒中心軸に対して傾斜させる
ものとして、例えば特開昭５７−６３７５０号公報に示
す方式のものが知られている。The electron beams from both sides of the color picture tube electron gun are focused on the center on the phosphor screen surface. That is, for the purpose of achieving static convergence, the end face of the beam passing cylinder of the main lens electrode is tilted with respect to the central axis of the cylinder, for example, in a method disclosed in Japanese Patent Laid-Open No. 57-63750.
この方式は、一対の対向電極において両側の電子ビーム
通過円筒の端面を円筒中心軸に対してそれぞれ一定量傾
斜させることで電極間に非対称電界を形成し１両側の電
子ビームの軌道を中央寄りに曲げるものである。This method creates an asymmetrical electric field between the electrodes by tilting the end surfaces of the electron beam passing cylinders on both sides by a certain amount with respect to the cylinder center axis in a pair of opposing electrodes. It is something that bends.
しかし、上記方式による傾斜円筒を有する電極において
は、その電極加工精度を一般に用いられるプレス加工法
では必要十分に保てない問題を含んでいる。以下、この
問題点を第５図乃至第７図により説明する。However, the electrode having an inclined cylinder according to the above-mentioned method has a problem in that the electrode processing accuracy cannot be maintained sufficiently by the commonly used press working method. This problem will be explained below with reference to FIGS. 5 to 7.
第５図に示すように、電極１には３個の近接した電子ビ
ーム通過円筒２，３が一体成形してなる。As shown in FIG. 5, the electrode 1 is integrally formed with three adjacent electron beam passing cylinders 2 and 3.
中央の電子ビーム通過円筒２の端面４は円筒軸中心に対
して直角に成形され、両側の電子ビーム通過円筒３の端
面５は円筒中心軸Ｙに対し一定量傾斜して成形されてい
る。The end surface 4 of the central electron beam passing cylinder 2 is formed perpendicular to the center of the cylinder axis, and the end surfaces 5 of the electron beam passing cylinders 3 on both sides are formed so as to be inclined by a certain amount with respect to the cylinder center axis Y.
前記電子ビーム通過円筒２，３は一般にバーリング加工
で成形される。このバーリング加工は。The electron beam passing cylinders 2 and 3 are generally formed by burring. This burring process.
あらかじめ設けた下穴の縁部を突曲げるもので、その加
工特性上、バーリング加工後、第６図に点線で示すよう
に端面が弾性変形により内側に倒れる傾向を示す、この
傾向は、曲げ加工と同様、−室以上の立上り高さを持た
ないと大きな値を示し、必要十分な円筒精度を確保でき
ない。The edge of a pre-prepared hole is bent.Due to its processing characteristics, after burring, the end face tends to fall inward due to elastic deformation, as shown by the dotted line in Figure 6.This tendency is due to the bending process. Similarly, if the rising height is not greater than -, the value will be large and sufficient cylindrical accuracy cannot be ensured.
第７図は曲げ加工で一般に知られている加工条件を説明
するための図で、同図（ａ）は立上り高さが低すぎる場
合の現象、同図（ｂ）は立上り高さが十分確保されてい
る場合を示す、同図（ａ）（ｂ）において、ｔは素材厚
、Ｒは曲げ半径、ｈは立上り高さを示す、十分な曲げ精
度を確保するための立上り高さｈの最小限度値（これを
最小立上り寸法という）は、
ｈ≧２．５ｔ＋Ｒ
の式で表される。一般に曲げ半径Ｒは素材厚ｔの１７２
程度に設定するため、最小立上り寸法りは素材厚ｔの３
倍以上必要とする。Figure 7 is a diagram to explain the generally known processing conditions for bending. Figure (a) shows the phenomenon that occurs when the rising height is too low, and Figure (b) shows that the rising height is sufficient. In (a) and (b) of the same figure, t is the material thickness, R is the bending radius, and h is the rising height.The minimum rising height h is to ensure sufficient bending accuracy. The limit value (this is called the minimum rising dimension) is expressed by the formula: h≧2.5t+R. Generally, the bending radius R is 172 of the material thickness t.
The minimum rising dimension is 3 of the material thickness t.
Requires more than twice as much.
一方、第６図に示すように、低円筒側６の立上り高さｈ
が素材厚ｔの約２倍で成形される場合、低円筒側６の端
部７における弾性変形量ｅ１は、必要十分な立上り高さ
く素材厚ｔの３倍以上）を有する高円筒側８の端面９の
弾性変形量ｅ２に対し、極めて大きな値を示す結果とな
る。このように１円筒成形後の端面の弾性変形量がその
円筒周囲によって異なることは、円筒内面の真円度が低
下することになり、これは主レンズ電極部品としての機
能を損ない、解像度の低下をもたらしてしまう。On the other hand, as shown in FIG. 6, the rising height h of the low cylindrical side 6
is molded at approximately twice the material thickness t, the elastic deformation amount e1 at the end 7 of the low cylindrical side 6 is the same as that of the high cylindrical side 8 which has a necessary and sufficient rising height (at least three times the material thickness t). This results in an extremely large value for the elastic deformation amount e2 of the end face 9. In this way, the amount of elastic deformation of the end face after forming one cylinder differs depending on the circumference of the cylinder, which results in a decrease in the roundness of the inner surface of the cylinder, which impairs its function as a main lens electrode component and reduces resolution. It brings about.
本発明の目的は、傾斜した円筒の加工精度を向上させ、
カラー受像管の解像度を良好に保つことが可能な電子銃
電極部品の加工方法を提供することにある。The purpose of the present invention is to improve the machining accuracy of inclined cylinders,
It is an object of the present invention to provide a method for processing an electron gun electrode component that can maintain good resolution of a color picture tube.
上記問題点は、低円筒側の形成される該低円筒側のつけ
根に対応した部分近辺をコイニング加工により薄板化し
、その後に低円筒側のつけ根に前記薄板部が残るように
バーリング加工を施すことにより解決される。The above problem can be solved by thinning the part of the low cylinder side corresponding to the base of the low cylinder side by coining, and then performing burring process so that the thin plate part remains at the base of the low cylinder side. Solved by
低円筒側のつけ根に対応した部分は、コイニング加工に
より加工硬化されており、また薄板化されているので、
バーリング加工によって円筒を成形した場合、低円筒側
の端面の弾性変形量は極めて小さくなる。すなわち、実
質的に板厚に対する円筒立上り部の比を最小限度値の３
倍以上の条件に合致させることができる。The part corresponding to the base of the lower cylinder side is work hardened by coining process and is made thinner, so
When a cylinder is formed by burring, the amount of elastic deformation of the end face on the lower cylinder side becomes extremely small. In other words, the ratio of the cylindrical rising portion to the plate thickness is reduced to the minimum value of 3.
It is possible to meet more than twice the conditions.
以下本発明の一実施例を第１図及び第２図により説明す
る。第１図（ａ）に示すように、あらかじめ容器状に成
形された電極半製品１０に円筒中心軸Ｙに対して一定量
Ｓだけ偏心させて捨穴１１を設ける０次に同図（ｂ）に
示すように、円筒中心軸Ｙと同心に外径Ｄ’ （第２図
に示す円筒の外径りより大きな外径）の範囲でコイニン
グ加工を施して素材板厚ｔの約１／２の板厚ｔ″の薄板
部分１２を形成する。この際、コイニングの余肉は捨穴
１１により吸収され、捨穴径は小さく１１ａとなる０次
に同図（Ｑ）に示すように、円筒中心軸Ｙに対しＳだけ
偏心させ、すなわち捨穴１１と同心にバーリング下穴１
３を設ける。その後同図（ｄ）に示すように、バーリン
グ下穴１３の穴縁部をバーリング加工することにより傾
斜した円筒１４の成形が完了する。この際、円筒１４の
端部１５の円筒中心軸Ｙに対する傾斜量は、バーリング
下穴１３の偏心量Ｓを所定の値に定めることで容易に設
けることができ、低円筒側１６と高円筒側１７の相対立
上り寸法は、バーリング下穴１３の寸法を変更すること
で、これも容易に求める値に設定できる。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. As shown in FIG. 1(a), a hole 11 is provided in an electrode semi-finished product 10 previously formed into a container shape, eccentric by a certain amount S with respect to the cylindrical center axis Y. Next, as shown in FIG. 1(b). As shown in Figure 2, the coining process is performed concentrically with the cylinder center axis Y within the range of outer diameter D' (larger outer diameter than the outer diameter of the cylinder shown in Figure 2), and the thickness is approximately 1/2 of the material plate thickness t. A thin plate portion 12 with a plate thickness t'' is formed.At this time, the excess thickness of the coining is absorbed by the hole 11, and the diameter of the hole is small, 11a.As shown in the same figure (Q), the center of the cylinder is Make the burring pilot hole 1 eccentric with respect to the axis Y by S, that is, concentrically with the drop hole 11.
3 will be provided. Thereafter, as shown in FIG. 4(d), the hole edge of the burring prepared hole 13 is burred, thereby completing the forming of the inclined cylinder 14. At this time, the amount of inclination of the end portion 15 of the cylinder 14 with respect to the cylinder center axis Y can be easily set by setting the eccentricity S of the burring prepared hole 13 to a predetermined value, and The relative rise dimension 17 can also be easily set to a desired value by changing the dimensions of the burring pilot hole 13.
第２図は前記のようにして成形された電極１８を示す、
電極１８の円筒１４の端部１５は円筒中心軸Ｙに対して
傾斜しており、低円筒側１６の円筒立上り高さｈは素材
厚ｔに比較すると約２倍である。この円筒１４は内径が
ｄ、外径りであり。FIG. 2 shows the electrode 18 formed as described above.
The end portion 15 of the cylinder 14 of the electrode 18 is inclined with respect to the cylinder center axis Y, and the cylinder rising height h on the lower cylinder side 16 is approximately twice as large as the material thickness t. This cylinder 14 has an inner diameter d and an outer diameter.
外径りのつけ根部１９には円周上に沿って第１図（Ｑ）
に示す薄板部分１２が残り、この薄板部分１２の範囲は
Ｄより一定量大きいＤ′からなり、薄板化された部分の
板厚ｔ′は素材厚ｔの約１／２に成形されている。At the base 19 of the outer diameter, there is a mark shown in Fig. 1 (Q) along the circumference.
The thin plate portion 12 shown in FIG. 1 remains, and the range of this thin plate portion 12 is D' which is larger than D by a certain amount, and the plate thickness t' of the thinned portion is formed to be approximately 1/2 of the material thickness t.
かかる電極１８においては、円筒つけ根部１９の周囲が
コイニング加工により加工硬化を生じ、この加工硬化は
一般に加工部の弾性変形の減少に大きな効果をもたらす
。また円筒つけ根部１９を素材厚の約１７２程度まで薄
板化させたことにより、低円筒側１６の立上り高さｈは
つけ根板厚ｔ′の約４倍となり、発明が解決しようとす
る問題点の項で説明した加工精度を充分に保つための最
低条件の３倍以上を満たし、この面からも円筒加工精度
を主レンズ電極部品として必要機能を果たすに問題ない
値に向上させることができる。In such an electrode 18, work hardening occurs around the cylindrical root portion 19 due to coining, and this work hardening generally has a large effect on reducing elastic deformation of the processed portion. In addition, by thinning the cylindrical root portion 19 to about 172 mm thick than the material thickness, the rising height h of the low cylinder side 16 is approximately four times the root plate thickness t', which solves the problem that the invention aims to solve. It satisfies more than three times the minimum condition for maintaining sufficient machining accuracy as explained in Section 3, and from this point of view, the cylindrical machining accuracy can be improved to a value that does not cause any problem in fulfilling the necessary functions as a main lens electrode component.
第３図は本発明の他の実施例を示す。前記実施例は外径
Ｄ′の内側を全て薄板化したが、本実施例は円筒つけ根
部１９の部分のみが薄板化するように、同図（ａ）のよ
うにリング状のｆＩ４２０を付けて薄板部分１２を形成
し、その後同図（ｂ）に示すようにバーリング加工して
なる。このように形成しても前記と同様の効果が得られ
る。FIG. 3 shows another embodiment of the invention. In the above embodiment, the entire inside of the outer diameter D' was made into a thin plate, but in this embodiment, a ring-shaped fI 420 is attached as shown in FIG. A thin plate portion 12 is formed and then burred as shown in FIG. 2(b). Even if formed in this way, the same effect as described above can be obtained.
第４図は本発明の更に他の実施例を示す。本実施例は第
１図、第２図に示す実施例の変形例で。FIG. 4 shows yet another embodiment of the invention. This embodiment is a modification of the embodiment shown in FIGS. 1 and 2.
前記したように低円筒側１６の方が高円筒側１７より弾
性変形が大きいので、本実施例は低円筒側１６のつけ根
部１９の周囲のみに薄板部１２が残るように薄板部１２
を形成してなる。このように形成しても前記各実施例と
同様の効果が得られる。As described above, the elastic deformation of the low cylindrical side 16 is larger than that of the high cylindrical side 17, so in this embodiment, the thin plate portion 12 is formed so that the thin plate portion 12 remains only around the root portion 19 of the low cylindrical side 16.
It forms. Even if formed in this way, the same effects as in each of the embodiments described above can be obtained.
本発明によれば、端部が傾斜している電極円筒の加工精
度を電極部品の機能を果たすに充分な値に高めることが
でき、解像度が向上する。According to the present invention, the processing accuracy of the electrode cylinder whose end portion is inclined can be increased to a value sufficient to fulfill the function of the electrode component, and the resolution is improved.
第１図（ａ）〜（ｄ）は本発明になる電極を得るための
加工法の一実施例を示す要部断面図、第２図は第１図の
加工法によって得られた本発明になる電極の一実施例を
示す要部断面図、第３図（ａ）。
（ｂ）及び第４図（ａ）、（ｂ）は本発明の電極の加工
法の第２．第３実施例を示す要部断面図、第５図は従来
の電極を示し、（ａ）は平面図、（ｂ）は断面図、第６
図は第５図の傾斜円筒の要部拡大断面図。
第７図（ａ）、（ｂ）は一般の曲げ加工条件を説明する
要部断面図である。
１２・・・薄板部分、１３・・・バーリング下穴、１４
・・・円筒、１５・・・端部、１６・・・低円筒側、１
７・・・高円筒側、１８・・・電極、第１図
（ａ）（ｂ）
Ｙ Ｙ（ｃ）
（ｄ）Ｙ
Ｙ１２・・・薄板部分
１３・・・バーリンク′下穴
１４・・・円筒
１５・・・端部
１６・・・低円筒側
１７・・・高円筒側
１９・・・円筒つけ根部
１２・・・薄板部分
１４・・・円筒
１５・・・端部
１６・・・低円筒側
１７・・・高円筒側
１８・・・電極
１９・・・円筒つけ根部
（己） （ｂ）１２・・・薄
板部分
１３・・・バーリンク′下穴
１４・・・円筒
１５・・・端部
１６・・・低円筒側
１７・・・高円筒側
１９・・・円筒つけ根部
２０・・・溝
（ａ） （ｂ）１３・・・バー
リンク゛下穴
１４・・・円筒
１５・・・端部
１６・・・低円筒側
１７・・・高円筒側
１９・・・円筒つけ根部FIGS. 1(a) to (d) are cross-sectional views of essential parts showing an example of the processing method for obtaining the electrode of the present invention, and FIG. 2 is a cross-sectional view of the main part of the electrode obtained by the processing method of FIG. FIG. 3(a) is a sectional view of a main part showing an example of an electrode. (b) and FIGS. 4(a) and (b) show the second example of the electrode processing method of the present invention. FIG. 5 is a cross-sectional view of main parts showing the third embodiment, and FIG. 5 shows a conventional electrode.
The figure is an enlarged cross-sectional view of the main part of the inclined cylinder shown in FIG. FIGS. 7(a) and 7(b) are sectional views of main parts explaining general bending conditions. 12... Thin plate part, 13... Burring prepared hole, 14
... Cylinder, 15 ... End, 16 ... Low cylinder side, 1
7...High cylindrical side, 18...Electrode, Fig. 1 (a) (b) Y Y (c)
(d)Y
Y12...Thin plate part 13...Bar link' pilot hole 14...Cylinder 15...End part 16...Low cylinder side 17...High cylinder side 19...Cylinder base 12... - Thin plate portion 14... Cylinder 15... End 16... Low cylinder side 17... High cylinder side 18... Electrode 19... Cylinder base (self) (b) 12... Thin plate portion 13...Bar link' prepared hole 14...Cylinder 15...End 16...Low cylinder side 17...High cylinder side 19...Cylinder base 20...Groove (a ) (b) 13... Bar link prepared hole 14... cylinder 15... end 16... low cylinder side 17... high cylinder side 19... cylinder base
Claims (1)
て傾斜している電子銃電極部品の加工方法において、バ
ーリング下穴の形成及び少なくとも低円筒側の形成され
る該低円筒側のつけ根に対応した部分付近をコイニング
加工により薄板化させた後に、低円筒側のつけ根に前記
薄板部が残るようにバーリング加工を施すことを特徴と
する電子銃電極部品の加工方法。1. In a method of processing an electron gun electrode component in which the cylindrical end surface of the electron beam passing cylinder is inclined with respect to the central axis of the cylinder, a burring pilot hole is formed and at least the base of the low cylinder side is formed. A method for processing an electron gun electrode component, which comprises thinning the corresponding portion by coining, and then performing burring so that the thin plate portion remains at the base of the lower cylinder side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61159601A JPH0750589B2 (en) | 1986-07-09 | 1986-07-09 | Electron gun electrode parts processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61159601A JPH0750589B2 (en) | 1986-07-09 | 1986-07-09 | Electron gun electrode parts processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6316527A true JPS6316527A (en) | 1988-01-23 |
| JPH0750589B2 JPH0750589B2 (en) | 1995-05-31 |
Family
ID=15697265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61159601A Expired - Fee Related JPH0750589B2 (en) | 1986-07-09 | 1986-07-09 | Electron gun electrode parts processing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750589B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009006392A (en) * | 2007-06-29 | 2009-01-15 | Yumex Corp | Method of forming flange joint with cylinder part, and flange joint with cylindrical part |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596535A (en) * | 1979-01-18 | 1980-07-22 | Toshiba Corp | Manufacturing method of electrode structure |
| JPS5763750A (en) * | 1980-10-03 | 1982-04-17 | Hitachi Ltd | Control picture tube electron gun |
-
1986
- 1986-07-09 JP JP61159601A patent/JPH0750589B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596535A (en) * | 1979-01-18 | 1980-07-22 | Toshiba Corp | Manufacturing method of electrode structure |
| JPS5763750A (en) * | 1980-10-03 | 1982-04-17 | Hitachi Ltd | Control picture tube electron gun |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009006392A (en) * | 2007-06-29 | 2009-01-15 | Yumex Corp | Method of forming flange joint with cylinder part, and flange joint with cylindrical part |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0750589B2 (en) | 1995-05-31 |
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