JPH06269887A - Method for forming metal bar stock with long size groove - Google Patents
Method for forming metal bar stock with long size grooveInfo
- Publication number
- JPH06269887A JPH06269887A JP6047193A JP6047193A JPH06269887A JP H06269887 A JPH06269887 A JP H06269887A JP 6047193 A JP6047193 A JP 6047193A JP 6047193 A JP6047193 A JP 6047193A JP H06269887 A JPH06269887 A JP H06269887A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- long
- long size
- forming
- grooves
- 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
Landscapes
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、パワートランジスタの
リードフレーム等の電子部品や精密機械部品に使用され
る長尺溝付金属条材の成形方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a long grooved metal strip used for electronic parts such as lead frames of power transistors and precision machine parts.
【0002】[0002]
【従来の技術】従来、例えばリードフレームに使用され
る図1に示すような溝b、bを有する長尺溝付金属条材
aを成形する場合、純銅や銅合金の所定幅、所定板厚に
形成した長尺金属材料cを図2に示すような一対の圧延
ロールd、e間を通過させることにより成形している。
この圧延では材料の幅方向への伸びが一定しないため、
該条材aの両側縁をスリッターで規定の幅に切断したの
ちプレスしてリードフレーム等に使用している。2. Description of the Related Art Conventionally, when a long grooved metal strip a having grooves b and b as shown in FIG. The long metal material c formed in step 1 is formed by passing it between a pair of rolling rolls d and e as shown in FIG.
In this rolling, the elongation of the material in the width direction is not constant, so
Both side edges of the strip a are cut with a slitter to a specified width and then pressed to be used as a lead frame or the like.
【0003】[0003]
【発明が解決しようとする課題】上記スリッターで条材
aの両側縁を切除して幅寸法を仕上げると、該条材aに
はスリッター刃による残留歪が生じ、続くプレス工程で
はこの歪のために材料aが反り、平坦性が損なわれて精
密なプレス成形を行なえなくなる欠点があり、また、ス
リッター刃と溝bの相対的な位置関係の正確な設定が困
難で、条材cの溝位置精度が悪いという欠点があった。When both side edges of the strip a are cut by the slitter to finish the width dimension, a residual strain due to the slitter blade is generated in the strip a, and this strain is generated in the subsequent pressing step. However, the material a warps, flatness is impaired and precise press molding cannot be performed. Further, it is difficult to accurately set the relative positional relationship between the slitter blade and the groove b, and the groove position of the strip c is difficult to set. It had the drawback of poor accuracy.
【0004】本発明は、こうした欠点を解決し、残留歪
がなく溝の位置が正確で長尺溝付金属条材の製造工程を
簡略化できる方法を提供することを目的とするものであ
る。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks and to provide a method capable of simplifying the manufacturing process of a long grooved metal strip having no residual strain and having an accurate groove position.
【0005】[0005]
【課題を解決するための手段】本発明では、一対の圧延
ロール間に長尺金属材料を通過させてこれに溝を形成
し、長尺溝付金属条材に成形する方法に於いて、該溝を
形成する突条を設けた圧延ロールに該長尺溝付金属条材
の仕上幅に相当する凹部を形成して該凹部内に前記突条
を設けておき、圧延ロールにより該長尺金属材料に該溝
を形成するとき該凹部の内面で幅方向への該長尺金属材
料の伸びを規制することにより、上記の目的を達成する
ようにした。According to the present invention, there is provided a method for forming a long grooved metal strip by passing a long metal material between a pair of rolling rolls to form a long grooved metal strip. A rolling roll provided with a ridge for forming a groove is provided with a concave portion corresponding to the finishing width of the long grooved metal strip, and the ridge is provided in the concave portion. When the groove is formed in the material, the elongation of the elongated metal material in the width direction is restricted by the inner surface of the recess to achieve the above object.
【0006】[0006]
【作用】用意した所定幅、所定板厚の長尺材料が一対の
圧延ロール間を通過すると、該長尺材料に溝が形成され
るが、この圧延ロールの一方には、長尺溝付金属条材の
仕上幅に相当する凹部が形成されており、その凹部内に
該溝を形成するための突条が設けられているので、圧延
されるときに該突条により幅方向へ伸ばされる長尺材料
は、該凹部のの内壁面でその伸びが制限される。これに
より、形成された該条材の幅は正確でしかも溝との位置
関係も正確に仕上がり、スリッターによる条材の切断の
必要がないので、該条材に残留歪が発生することもな
い。When a prepared long material having a predetermined width and a predetermined plate thickness passes between a pair of rolling rolls, a groove is formed in the long material. One of the rolling rolls has a long grooved metal. Since a concave portion corresponding to the finished width of the strip material is formed and a protrusion for forming the groove is provided in the concave portion, the length extended in the width direction by the protrusion when rolling is performed. The length of the scale material is limited by the inner wall surface of the recess. As a result, the width of the formed strip is accurate and the positional relationship with the groove is finished accurately, and there is no need to cut the strip with a slitter, so that residual strain does not occur in the strip.
【0007】[0007]
【実施例】本発明の実施例を図面に基づき説明すると、
図3に於いて符号1は純銅、銅合金或いはパーマロイ等
を所定幅、所定板厚で矩形断面に形成した長尺材料を示
し、該長尺材料1は一対の圧延ロール2a、2bにより
図1に示したものと同様の溝を備えた長尺金属条材に成
形される。一方の圧延ロール2aには、図4に明示する
ように、溝を形成するための突条3が設けられるが、該
突条3をその圧延ロール2aに形成した凹部4の内部に
設けるようにした。Embodiments of the present invention will be described with reference to the drawings.
In FIG. 3, reference numeral 1 denotes a long material formed of pure copper, copper alloy, permalloy or the like in a rectangular cross section with a predetermined width and a predetermined plate thickness. The long material 1 is formed by a pair of rolling rolls 2a and 2b. It is formed into a long metal strip having a groove similar to that shown in FIG. As shown in FIG. 4, one rolling roll 2a is provided with a ridge 3 for forming a groove, and the ridge 3 is provided inside the recess 4 formed in the rolling roll 2a. did.
【0008】該長尺材料1は圧延ロール2a、2b間で
圧延されるとき、図4のように圧延により幅方向へ伸び
る材料1が該凹部4の内壁面にて規制されながら突条3
による成形を受けるので、成形された長尺金属材料はそ
の幅寸法が正確で溝5から側縁までの距離A、Bも正確
に仕上がる。尚、溝5の本数と形状は任意である。When the long material 1 is rolled between the rolling rolls 2a and 2b, the material 1 extending in the width direction by rolling is regulated by the inner wall surface of the recess 4 as shown in FIG.
Since the molded long metal material has a precise width dimension, the distances A and B from the groove 5 to the side edges are also accurately finished. The number and shape of the grooves 5 are arbitrary.
【0009】上記構成の圧延ロール2a、2bに幅30
mm、板厚1.5mmの矩形断面の純銅の長尺材料1を
通過させ、これに幅1mm、深さ1mmの溝5を2条形
成し、幅32mm、板厚1.3mmで距離A=B=1
0.5mmに仕上げた場合、|A−B|<0.05で、
条材の幅も32±0.1の範囲であった。この場合、圧
延ロール凹部4の深さTrは所定板厚1.3mmよりも
小さく0.65mmよりも大きくなるように設定した。
この長尺溝付金属条材をプレス成形してリードフレーム
を作成したが、残留歪がないのでプレスの際に反り返る
こともなく、正確にプレスできた。The width of the rolling rolls 2a and 2b having the above structure is 30.
mm, a plate thickness 1.5 mm, a long material 1 of pure copper having a rectangular cross section is passed, two grooves 5 having a width of 1 mm and a depth of 1 mm are formed in the material, and a width A is 32 mm and a plate thickness is 1.3 mm. B = 1
When finished to 0.5 mm, | AB | <0.05,
The width of the strip was also within the range of 32 ± 0.1. In this case, the depth Tr of the rolling roll recess 4 was set to be smaller than a predetermined plate thickness of 1.3 mm and larger than 0.65 mm.
This long grooved metal strip was press-molded to form a lead frame, but since there was no residual strain, it did not warp during pressing and could be pressed accurately.
【0010】[0010]
【発明の効果】以上のように本発明によるときは、一対
の圧延ロール間に長尺金属材料を通過させてこれに溝を
有する長尺溝付金属条材を成形するとき、該溝を形成す
る突条を設けた圧延ロールに該長尺溝付金属条材の仕上
幅に相当する凹部を形成して該凹部内に前記突条を設け
て該溝の形成に伴う該長尺材料の幅方向への伸びを規制
したので、成形された条材の幅方向寸法と溝位置の精度
が正確な圧延成形を行なえ、スリッター等の加工の必要
がないので残留歪も発生せず続くプレス成形も正確に行
なえる等の効果がある。As described above, according to the present invention, when a long metal material is passed between a pair of rolling rolls to form a long metal strip having grooves, the grooves are formed. A width corresponding to the finished width of the long grooved metal strip is formed on the rolling roll provided with the ridge, and the ridge is provided in the recess to form the width of the long material accompanying the formation of the groove. Since the elongation in the direction is regulated, the width dimension and groove position accuracy of the formed strip can be accurately formed, and there is no need for processing such as slitting, so residual distortion does not occur and subsequent press forming is possible. There is an effect that it can be done accurately.
【図1】 長尺溝付金属条材の斜視図FIG. 1 is a perspective view of a long metal strip with grooves.
【図2】 従来の成形方法の断面図FIG. 2 is a sectional view of a conventional molding method.
【図3】 本発明の実施例の側面図FIG. 3 is a side view of an embodiment of the present invention.
【図4】 図3のA−A断面図4 is a sectional view taken along line AA of FIG.
【符号の説明】 1 長尺金属材料 2a、2b 圧延ロール
3、3突条 4 凹部 5 溝[Explanation of symbols] 1 long metal material 2a, 2b rolling roll
3 and 3 ridge 4 concave 5 groove
Claims (2)
過させてこれに溝を形成し、長尺溝付金属条材に成形す
る方法に於いて、該溝を形成する突条を設けた圧延ロー
ルに該長尺溝付金属条材の仕上幅に相当する凹部を形成
して該凹部内に前記突条を設けておき、圧延ロールによ
り該長尺金属材料に該溝を形成するとき該凹部の内面で
幅方向への該長尺金属材料の伸びを規制するようにした
ことを特徴とする長尺溝付金属条材の成形方法。1. A method of forming a groove in a long metal material by allowing a long metal material to pass between a pair of rolling rolls, and forming a long grooved metal strip, wherein a ridge for forming the groove is provided. When forming a recess corresponding to the finished width of the elongated grooved metal strip on the rolling roll and providing the protrusion in the recess, and forming the groove in the elongated metal material by a rolling roll A method for forming a long grooved metal strip, wherein the inner surface of the recess is adapted to restrict the elongation of the long metal material in the width direction.
厚さよりも小さいことを特徴とする請求項1に記載の長
尺異形断面金属条材の成形方法。2. The method for forming a long-section metal cross-section strip according to claim 1, wherein the depth of the recess is smaller than the thickness of the long metal material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6047193A JP2879638B2 (en) | 1993-03-19 | 1993-03-19 | Forming method for metal strips with long grooves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6047193A JP2879638B2 (en) | 1993-03-19 | 1993-03-19 | Forming method for metal strips with long grooves |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06269887A true JPH06269887A (en) | 1994-09-27 |
JP2879638B2 JP2879638B2 (en) | 1999-04-05 |
Family
ID=13143226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6047193A Expired - Fee Related JP2879638B2 (en) | 1993-03-19 | 1993-03-19 | Forming method for metal strips with long grooves |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2879638B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011000609A (en) * | 2009-06-18 | 2011-01-06 | Mitsubishi Shindoh Co Ltd | Method and apparatus for manufacturing bar having irregular cross section |
CN109047334A (en) * | 2018-08-23 | 2018-12-21 | 中冶赛迪工程技术股份有限公司 | Production method and application for the slitting of hot strip longitudinal direction |
-
1993
- 1993-03-19 JP JP6047193A patent/JP2879638B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011000609A (en) * | 2009-06-18 | 2011-01-06 | Mitsubishi Shindoh Co Ltd | Method and apparatus for manufacturing bar having irregular cross section |
CN109047334A (en) * | 2018-08-23 | 2018-12-21 | 中冶赛迪工程技术股份有限公司 | Production method and application for the slitting of hot strip longitudinal direction |
Also Published As
Publication number | Publication date |
---|---|
JP2879638B2 (en) | 1999-04-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |