JP3540854B2

JP3540854B2 - Laminated and fixed product of thin plate and method for producing the same

Info

Publication number: JP3540854B2
Application number: JP04717895A
Authority: JP
Inventors: 務小川
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1995-03-07
Filing date: 1995-03-07
Publication date: 2004-07-07
Anticipated expiration: 2019-07-07
Also published as: JPH08250319A

Description

【０００１】
【産業上の利用分野】
この発明は、プレス加工による薄板の積層固着品およびその製造方法に係り、特に、電磁開閉器やモーター等の電気機器用積層固着品の品質向上および積層固着強度の増加を目的とするものである。
【０００２】
【従来の技術】
図１５は、薄板の積層固着品を示したものである。図中、１ａは薄板相互を固着する部分である。
この固着部分１ａの形状には半抜き突起とＶ形突起がある。それぞれの固着部の状態を図１６・図１７に示す。
一般に、この種の積層固着品は、厚さが０．３〜１．０ｍｍ程度の薄板を所定の形状にプレス打ち抜きして、必要枚数を積層し、各薄板を重合固着することにより構成する。
図１８は、半抜き突起３で相互の固着を行なう場合の突起部の形状を示したものである。（ａ）は上面図、（ｂ）はＡ−Ａ断面図である。
この半抜き突起は薄板２に、この薄板２の板厚ｔの５０〜７０％程度の高さ、幅Ｗの突起凸部３を打ち出し、この突起凸部３に対して片側に５〜１５μｍ程度の圧入代△ｗ（幅Ｗ−２△ｗ）を持つ凹部４を設け、この凹部４に突起凸部３を押圧密着することにより薄板２を重合して積層固着品１とする方法がある。
図１９は、Ｖ形突起５で相互の固着を行なう場合の突起部５の形状を示したものである。（ａ）は上面図、（ｂ）はＡ−Ａ断面図、（ｃ）はＢ−Ｂ断面図を示す。
このＶ突起凸部５の形状は、半抜きの打ち出し突起凸部３と同様に、幅Ｗの突起凸部５に対し、片側に５〜１５μｍの圧入代△ｗ（幅Ｗ−２△ｗ）を持つ凹部６を設け、この凹部６に突起凸部５を押圧密着することにより薄板２を重合して積層固着品１とする。
【０００３】
【発明が解決しようとする課題】
上記のようにして図１に示す積層固着品１を製造する場合、次のような問題がある。
まず、図１８に示す突起凸部３と凹部４で構成する半抜きによる積層固着方法は、薄板の板厚が０．５ｍｍ程度の場合、突起凸部３の圧入代△ｗは通常片側５〜１０μｍ程度であり、正常に圧入固着された突起凸部は滑らかに凹部４に圧入されるが、打ち出し突起の挿入高さが、板厚ｔの５０〜７０％程度と少ないため、例えば、図２０のように圧入代△ｗのバランスが悪く△ｗａ＞△ｗｂの場合には、圧入代△ｗの多い方と少ない方とで圧入固着力のバランスがくずれ、図２１のように、突起凸部３の嵌合部３ａが不完全な嵌合となり突起凸部３の横ずれを起こし積層固着品１に傾きを生じたり、積層固着品１の固着強度を著しく減じたりする。
また、圧入代△ｗが板厚ｔに対して多い場合には、図２２のように突起凸部３の嵌合部３ａが潰され、不完全な嵌合となり、積層品の固着強度を著しく弱くする。
【０００４】
図１９のものは、積層固着品１の固着強度を上げるため、打ち出し突起の形状をＶ形状とし、図１７に示すようにＶ突起凸部５の高さを薄板の板厚ｔの約２枚分としているので、Ｖ突起凸部５の傾き角θが大きくなり薄板個片間に隙間△ｔを生じ積層固着品１の占積率を著しく悪化させることになり積層固着後に再加圧が必要となる。
【０００５】
この発明は、薄板相互の位置決め精度を確保しつつ、その積層固着を強固にできる薄板の積層固着品およびその製造方法を得ようとするものである。
【０００６】
第１の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着を強固にできる薄板の積層固着品を得ることを目的とする。
【０００７】
第２の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着をより強固にできる薄板の積層固着品を得ることを目的とする。
【０００８】
第３の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着を一層強固にできる薄板の積層固着品を得ることを目的とする。
【０００９】
第４の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着を更に強固にできる薄板の積層固着品を得ることを目的とする。
【００１０】
第５の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着をより一層強固にできる薄板の積層固着品を得ることを目的とする。
【００１１】
第６の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着をなお一層強固にできる薄板の積層固着品を得ることを目的とする。
【００１２】
第７の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着を更に一層強固にできる薄板の積層固着品を得ることを目的とする。
【００１３】
第８の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着をより更に一層強固にできる薄板の積層固着品を得ることを目的とする。
【００１４】
第９の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着をなお更に強固にできる薄板の積層固着品を得ることを目的とする。
【００１５】
第１０の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着を一層強固にできる薄板の積層固着品を得ることを目的とする。
【００１６】
第１１の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着を強固にできる薄板の積層固着品の製造方法を得ることを目的とする。
【００１７】
第１２の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着をより強固にできる薄板の積層固着品の製造方法を得ることを目的とする。
【００１８】
第１３の発明は、薄板相互の位置決め精度を確保しつつ、その積層固着を一層強固にできる薄板の積層固着品の製造方法を得ることを目的とする。
【００１９】
第１４の発明は、簡潔な製造工程で、薄板相互の位置決め精度を確保しつつ、その積層固着を強固にできる薄板の積層固着品の製造方法を得ることを目的とする。
【００２０】
【課題を解決するための手段】
第１の発明では、複数枚の薄板を、この薄板の表面および裏面にそれぞれ形成された打ち出し突起凸部と凹部とによって積層固着する積層固着品において、前記突起凸部および凹部の平面形状を非円形とするとともに、前記突起凹部の寸法を局部的に小さくして突起凸部の寸法に対する圧入代を局部的に多くする。
【００２１】
第２の発明では、突起凸部および凹部の平面形状を長方形とした。
【００２２】
第３の発明では、長方形をした突起凹部の長辺側の片面の寸法を局部的に１〜２箇所だけ他の突起凹部の寸法より小さくして突起凸部の寸法に対する圧入代を局部的に多くする。
【００２３】
第４の発明では、長方形をした突起凹部の長辺側の両面の寸法を局部的に１〜２箇所だけ他の突起凹部の寸法より小さくして突起凸部の寸法に対する圧入代を局部的に多くする。
【００２４】
第５の発明では、長方形をした突起凸部の長辺側の片面の寸法を局部的に他の突起凸部の寸法より大きくして突起凹部の寸法に対する圧入代を局部的に多くする。
【００２５】
第６の発明では、突起凸部および突起凹部を対称的にそれぞれ複数個配置した。
【００２６】
第７の発明では、長方形をした突起凹部の長辺側の両面の寸法を局部的に他の突起凹部の寸法より小さくして凸部の寸法に対する圧入代を局部的に多くする。
【００２７】
第８の発明では、薄板に形成されたＶ形の断面形状を持つ打ち出し突起凸部と凹部とによって積層固着する積層固着品において、Ｖ形の突起凸部および凹部の圧入代を局部的に少なくする。
【００２８】
第９の発明では、薄板に形成されたＶ形の断面形状を持つ打ち出し突起凸部と凹部とによって積層固着される積層固着品において、Ｖ形状の突起凸部の先端部の寸法を局部的に隣接する突起凸部の寸法より小さくして凹部の寸法に対する圧入代を局部的に少なくする。
【００２９】
第１０の発明では、薄板に形成されたＶ形の断面形状を持つ打ち出し突起凸部と凹部とによって積層固着される積層固着品において、Ｖ形状の凹部底の寸法を局部的に隣接する凹部の寸法より大きくして突起凸部の寸法に対する圧入代を局部的に少なくする。
【００３０】
第１１の発明では、薄板を所定形状に打ち抜く工程と、薄板の表面および裏面に非円形の平面形状を持ち圧入代を局部的に大きくされた突起凸部および突起凹部を形成する工程と、薄板を複数枚積層し隣接する薄板の突起凸部と突起凹部とを圧入嵌合し局部的に大きくされた圧入代によって互いに固着する工程とを備える。
【００３１】
第１２の発明では、薄板を所定形状に打ち抜く工程と、薄板の表面および裏面に非円形の平面形状を持ち圧入代を局部的に大きくされた突起凸部および突起凹部を形成する工程と、薄板を複数枚積層し隣接する薄板の複数の突起凸部と複数の突起凹部とをそれぞれ対称的に配置した状態で圧入嵌合し局部的に大きくされた圧入代によって互いに固着する工程とを備える。
【００３２】
第１３の発明では、薄板を所定形状に打ち抜く工程と、薄板の表面および裏面にＶ形の断面形状を持ち圧入代を局部的に大きくされた突起凸部および突起凹部を形成する工程と、薄板を複数枚積層し隣接する薄板の突起凸部と突起凹部とを圧入嵌合し局部的に小さくされた圧入代によって互いに固着する工程とを備える。
【００３３】
第１４の発明では、薄板の打ち抜き工程と、突起凸部および突起凹部の形成工程とを同時に行う。
【００３４】
この発明の実施例では、次のような具体的手段を有する。
この発明は、上記のような問題点を解決するためになされたもので、プレス加工により打ち抜かれる複数枚の薄板に薄板を重合固着するための長方形をした突起凸部と凹部において、圧入代を局部的に変化させて薄板を重合し固着するようにしたものである。
また、Ｖ形状をした突起凸部と凹部においては、Ｖ突起凸部の高さを薄板の板厚ｔとほぼ同程度とし、且、圧入代を局部的に変化させた突起凸部と凹部を重合し積層固着するようにしたものである。
【００３５】
【作用】
第１の発明においては、突起凸部および突起凹部の平面形状を非円形とすることにより薄板相互の位置精度を確保し、突起凹部の突起凸部に対する圧入代を局部的に多くすることにより積層固着を強固にする。
【００３６】
第２の発明においては、突起凸部および突起凹部の平面形状を長方形とすることにより薄板相互の位置精度を確保し、突起凹部の突起凸部に対する圧入代を局部的に多くすることにより積層固着を強固にする。
【００３７】
第３の発明においては、突起凸部および突起凹部の平面形状を長方形とすることにより薄板相互の位置精度を確保し、突起凹部の長辺側の片面の突起凸部に対する圧入代を局部的に多くすることにより積層固着を強固にする。
【００３８】
第４の発明においては、突起凸部および突起凹部の平面形状を長方形とすることにより薄板相互の位置精度を確保し、突起凹部の長辺側の両面の突起凸部に対する圧入代を局部的に多くすることにより積層固着を強固にする。
【００３９】
第５の発明においては、突起凸部および突起凹部の平面形状を長方形とすることにより薄板相互の位置精度を確保し、突起凸部の長辺側の片面の突起凹部に対する圧入代を局部的に多くすることにより積層固着を強固にする。
【００４０】
第６の発明においては、突起凸部および突起凹部の平面形状を長方形とすることにより薄板相互の位置精度を確保し、突起凹部の長辺側の片面の突起凸部に対する圧入代を局部的に多くするとともに、複数の突起凹部および突起凸部を対称的に配置することにより積層固着を強固にする。
【００４１】
第７の発明においては、突起凸部および突起凹部の平面形状を長方形とすることにより薄板相互の位置精度を確保し、突起凸部の長辺側の両面の突起凹部に対する圧入代を局部的に多くすることにより積層固着を強固にする。
【００４２】
第８の発明においては、突起凸部および突起凹部の断面形状をＶ形とすることにより薄板相互の位置精度を確保し、突起凸部および凹部の圧入代を局部的に多くすることにより積層固着を強固にする。
【００４３】
第９の発明においては、突起凸部および突起凹部の断面形状をＶ形とすることにより薄板相互の位置精度を確保し、突起凸部の突起凹部に対する圧入代を局部的に多くすることにより積層固着を強固にする。
【００４４】
第１０の発明においては、突起凸部および突起凹部の断面形状をＶ形とすることにより薄板相互の位置精度を確保し、突起凹部の突起凸部に対する圧入代を局部的に多くすることにより積層固着を強固にする。
【００４５】
第１１の発明においては、非円形の平面形状を持ち圧入代を局部的に大きくした突起凸部および突起凹部により薄板を互いに固着し、積層固着を強固にする。
【００４６】
第１２の発明においては、非円形の平面形状を持ち圧入代を局部的に大きくした突起凸部および突起凹部により薄板を互いに固着するとともに、複数の突起凸部および突起凹部を対称的に配置して、積層固着を強固にする。
【００４７】
第１３の発明においては、Ｖ形の断面形状を持ち圧入代を局部的に大きくした突起凸部および突起凹部により薄板を互いに固着し、積層固着を強固にする。
【００４８】
第１４の発明は、薄板の打ち抜き工程と、突起凸部および突起凹部の形成工程とが、同時に行われる。
【００４９】
この発明の実施例においては、次のような具体的作用を有する。
この発明は、複数枚の薄板の表裏にそれぞれ形成する長方形をした突起凸部と凹部において、突起凸部の長辺側の片面又は両面の圧入代を局部的に主要部圧入代より大きくするか、あるいは、凹部の長辺側の片面または両面の圧入代を局部的に主要部圧入代より大きくするようにし、平均圧入代を従来のものより小さくすると共に、最大圧入代を従来の圧入代よりも大きくするようにしたので、圧入が滑らかに進み、かつ、積層固着品の積層精度を向上させるばかりでなく、強固な積層固着力を得るように作用する。
【００５０】
また、他の発明では、凹部に圧入するＶ形状の突起凸部の先端部の幅寸法を局部的に隣接する突起凸部の傾き角θ部の主要圧入部の幅寸法より小さく設定し、凹部の幅寸法に対する突起凸部の圧入代を局部的に少なくするか、或は、Ｖ突起凸部の嵌合する凹部の幅寸法を隣接する傾き角θ部の嵌合する凹部の幅寸法より大きくして突起凸部の寸法に対する圧入代を局部的に少なくなるようにしたので突起凸部が凹部へ圧入される初期には滑らかに突起凸部が凹部に圧入され、積層固着品の積層精度を向上させるばかりでなく、圧入代を多く設定したＶ突起凸部の傾き角θ部ではより強固な積層固着力を得るように作用する。
【００５１】
【実施例】
実施例１．
この発明は、薄板を積層固着する際に生じる積層品の傾きとか捻れなどが少ない積層固着品１を得るとともに、積層固着力を確保するためになされたものである。
図１に、長方形をした半抜き形状の突起凸部３の打ち出しと凹部４の成形を行なうパンチ７とダイ８の形状を示す。
図１に示すように、パンチ７の長辺側の片面に局部的に凹部４への主要部圧入代△ｗより付加圧入代△ｗ１分だけ圧入代を多くするための溝７ａを２箇所設け、図２に示す突起凸部３（幅Ｗ）と凹部４（幅Ｗ’）を複数枚の薄板２に成形し、突起凸部３を凹部４に圧入する際の圧入代△ｗを凹部４に成形した付加圧入代△ｗ１だけ局部的に多くすることにより積層固着品１の固着力を強くするようにしている。
ここで、２△ｗ＝Ｗ−Ｗ’である。
圧入代△ｗに付加する付加圧入代△ｗ１は、薄板２の板厚ｔが０．５ｍｍ程度の場合には、５〜１０μｍ程度であるが、長方形部分の主要部圧入代△ｗが突起凸部３が凹部４へ嵌合する際のガイドの役目を果たすための突起凸部３と凹部４の嵌合精度が向上するとともに、局部的に多くした付加圧入代△ｗ１を凹部４に圧入することにより強固な積層固着力を得ることができる。
なお、図１５に示す積層固着品１のように、突起凸部３と凹部４が相対しているものには付加圧入代△ｗ１を成形する方向を図３・図４に示すように互いに対向して設けるようにすると圧入代のバランスがとれるため積層固着品１の製品精度のより安定したものが得られ易い。
【００５２】
実施例２．
実施例２は、図５に示すようなパンチ７の長辺側の両面に局部的に凹部４への主要部圧入代△ｗより付加圧入代△ｗ１分だけ圧入代を多くするための溝７ａをそれぞれ２箇所ずつ設け、図６に示す突起凸部３と凹部４を薄板に成形し、突起凸部３（幅Ｗ）を凹部４（幅Ｗ’）に圧入する際の圧入代△ｗを凹部４に成形した付加圧入代△ｗ１だけ局部的に多くすることにより積層固着品１の固着力を強くするようにしたものである。
ここで２△ｗ＝Ｗ−Ｗ’である。
実施例２は、実施例１の場合より、付加圧入代△ｗ１を突起凸部３の両面に形成して、より強固な積層固着品１の固着強度を得ることができる。
なお、実施例２は、図６に示すように付加圧入代△ｗ１が凹部４の長辺側の両面に設けてあるので、突起凸部３と凹部４の間には圧入代△ｗに加え付加圧入代△ｗ１の圧入代を有しているため、圧入嵌合する突起凸部３と凹部４との圧入代△ｗ程度のセンタズレに対しては実用に耐え得るだけの積層固着力をもつことができる。
【００５３】
実施例３．
実施例３は、図７に示すようなパンチ７とダイ８において、薄板の突起凸部３に付加圧入代△ｗ１を成形するためのダイ８の長辺側の片側に局部的に付加圧入代△ｗ１分だけ圧入代を多くするための溝８ａを２箇所設けており、薄板に図８に示す突起凸部３（幅Ｗ）と凹部４（幅Ｗ’）を成形し、突起凸部３を凹部４に圧入する際の圧入代△ｗを突起凸部３に成形した付加圧入代△ｗ１だけ局部的に多くすることにより、実施例１と同様の効果を得ることができる。
ここで２△ｗ＝Ｗ−Ｗ’である。
【００５４】
実施例４．
実施例４は、実施例３と同じように、図９に示すようなダイ８の長辺側の両面に局部的に凹部４への主要部圧入代△ｗより付加圧入代△ｗ１分だけ圧入代を多くするための溝８ｂを２箇所設け、図１０に示す突起凸部３（幅Ｗ）と凹部４（幅Ｗ’）を成形し、突起凸部３を凹部４に圧入する際の圧入代△ｗを突起凸部３に成形した付加圧入代△ｗ１だけ局部的に多くすることにより積層固着品１の固着力を強くするようにしたものである。
ここで２△ｗ＝Ｗ−Ｗ’である。
この方法は、付加圧入代△ｗ１を突起凸部３の両面に形成しているので、実施例３の方法に比べ、より強固な積層固着品１の固着強度を得ることができる。
なお、実施例４は、図１０に示すように付加圧入代△ｗ１が突起凸部３の長辺側の両面にそれぞれ設けてあるので、突起凸部３と凹部４の間には圧入代△ｗに加え付加圧入代△ｗ１の圧入代を有しているため、圧入嵌合する突起凸部３と凹部４との圧入代△ｗ程度のセンタズレに対しては実用に耐え得るだけの積層固着力をもつことができる。
【００５５】
実施例５．
実施例５は、図１１に示すようなＶ形状をした突起凸部５（幅Ｗ）の打ち出しと凹部６（幅Ｗ’）の成形を行なう。
図１２に示すパンチ７とダイ８において、薄板のＶ形状をした突起凸部５の先端部の幅寸法を図１１に示すように局部的に隣接する突起凸部の傾き角θ部５’の幅寸法Ｗより２△ｗ2 小さくするため突起凸部５の先端部を成形するダイ８の寸法を他の寸法より片側で△ｗ2 だけ小さくしている。
【００５６】
従来は、図１７に示すように積層固着品１の固着強度を上げるため、打ち出し突起凸部５の高さを薄板ｔの約２枚分としているため突起凸部５の先端部はＶ形状の打ち出し成形により伸びを生じ、積層固着する際に突起凸部先端がこの伸びにより圧入代を減じ突起凸部５の凹部６への挿入が容易になる利点があったが、反面、Ｖ形状の打ち出し突起凸部５の高さを薄板ｔの２枚分としているためＶ形状の傾き角θが大きくなり薄板個片間に△ｔの隙間を生じることとなり積層固着品１の占積率を著しく悪化させ積層固着後に再加圧を必要とする欠点があった。
【００５７】
実施例５では、積層固着品１の占積率を向上させるためＶ形状の打ち出し突起凸部５の高さをほぼ薄板ｔの１枚分の高さとし、Ｖ形状の傾き角を小さくするようにしている一方、Ｖ形状の高さが低いため、Ｖ形状の成形の伸びによる圧入幅方向の寸法が狭くなる変化が生じにくい。そこで図１２に示すように突起凸部５の先端部を成形するダイ８の幅寸法を他の部分の幅寸法より２△ｗ2 だけ狭くし、突起凸部５の先端部の幅を狭く成形することにより圧入を滑らかにするようにしている。
なお、積層固着品１の固着強度は、所定の圧入代△ｗを有する突起凸部の傾き角θ部５’において強固に固着される。
ここで２△ｗ＝Ｗ−Ｗ’である。
【００５８】
実施例６．
実施例６は、実施例５が図１１に示すようにＶ形状をした突起凸部５の先端部の幅寸法を局部的に２△ｗ2 だけ狭くするため、突起凸部５の先端部の圧入代△ｗを局部的に隣接する突起凸部の傾き角θ部５’の寸法より狭くするため突起凸部５の先端部を成形するダイ８の寸法を他の寸法より２△ｗ2 だけ狭くしているのに対して、実施例６では、図１３に示すＶ形状をした突起凸部５を圧入する凹部６を成形するパンチ７を、図１４に示すように突起凸部５の先端部が嵌合する凹部６を成形するパンチ７ｂ部を他の寸法より片側で△ｗ2 だけ広くし、凹部６の突起凸部５の嵌合する凹部６の幅を広く成形できるようにし突起凸部５の圧入を滑らかにするようにしている。
なお、積層固着品１の固着強度は、所定の圧入代△ｗを有する突起凸部の傾き角θ部５’において実施例５と同様に強固に固着される。
【００５９】
実施例１は、突起凸部と凹部との主要部圧入代を従来方法よりも小さくし、突起凸部の長辺側の片面の圧入代を局部的に１〜２箇所突起凸部の他の部分の圧入代より大きくしているので、主要部圧入代により位置決め精度を確保しつつ局部的に圧入代を大きくした部分により積層固着力をより強固なものとすることができる。
【００６０】
実施例２は、突起凸部と凹部との主要部圧入代を従来方法よりも小さくし、突起凸部の長辺側の両面の圧入代を局部的に１〜２箇所突起凸部の他の部分の圧入代より大きくしているので、主要部圧入代により位置決め精度を確保しつつ局部的に圧入代を大きくした部分により積層固着力をより強固なものとすることができる。
【００６１】
実施例３は、突起凸部と凹部との主要部圧入代を従来方法よりも小さくし、突起凹部の長辺側の片面の圧入代を局部的に１〜２箇所突起凹部の他の部分の圧入代より大きくしているので、主要部圧入代により位置決め精度を確保しつつ局部的に圧入代を大きくした部分により積層固着力をより強固なものとすることができる。
【００６２】
実施例４は、突起凸部と凹部との主要部圧入代を従来方法よりも小さくし、突起凹部の長辺側の両面の圧入代を局部的に１〜２箇所突起凹部の他の部分の圧入代より大きくしているので主要部圧入代により位置決め精度を確保しつつ局部的に圧入代を大きくした部分により積層固着力をより強固なものとすることができる。
【００６３】
実施例５は、Ｖ形状をした突起凸部の先端部の幅寸法を局部的に隣接する突起凸部の傾き部の幅寸法より小さくし、成形された突起凸部を凹部に圧入する際の初期の圧入代を少なくすることにより、Ｖ形状をした突起凸部全体の圧入をより滑らかにすることにより位置決め精度を確保しつつ、積層固着品の積層固着力をより強固なものとする。
【００６４】
実施例６は、Ｖ形状をした凹部中央部の幅寸法を局部的に隣接する凹部の傾き部の幅寸法より大きくし、成形された突起凸部を凹部に圧入する際の初期の圧入代を少なくすることにより位置決め精度を確保しつつ、Ｖ形状をした突起凸部全体の圧入をより滑らかにし、積層固着品１０の積層固着力をより強固なものとする。
【００６５】
【発明の効果】
第１の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着を強固にできる薄板の積層固着品を得ることができる。
【００６６】
第２の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着をより強固にできる薄板の積層固着品を得ることができる。
【００６７】
第３の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着を一層強固にできる薄板の積層固着品を得ることができる。
【００６８】
第４の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着を更に強固にできる薄板の積層固着品を得ることができる。
【００６９】
第５の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着をより一層強固にできる薄板の積層固着品を得ることができる。
【００７０】
第６の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着をなお一層強固にできる薄板の積層固着品を得ることができる。
【００７１】
第７の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着を更に一層強固にできる薄板の積層固着品を得ることができる。
【００７２】
第８の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着をより更に一層強固にできる薄板の積層固着品を得ることができる。
【００７３】
第９の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着をなお更に強固にできる薄板の積層固着品を得ることができる。
【００７４】
第１０の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着を一際強固にできる薄板の積層固着品を得ることができる。
【００７５】
第１１の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着を強固にできる薄板の積層固着品の製造方法を得ることができる。
【００７６】
第１２の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着をより強固にできる薄板の積層固着品の製造方法を得ることができる。
【００７７】
第１３の発明によれば、薄板相互の位置決め精度を確保しつつ、その積層固着を一層強固にできる薄板の積層固着品の製造方法を得ることができる。
【００７８】
第１４の発明によれば、簡潔な製造工程で、薄板相互の位置決め精度を確保しつつ、その積層固着を強固にできる薄板の積層固着品の製造方法を得ることができる。
【図面の簡単な説明】
【図１】この発明による長方形の突起凸部と凹部を成形するパンチとダイの斜視図。
【図２】この発明の長方形の半抜きに成形した突起凸部の平面図と側断面図。
【図３】この発明の薄板を積層した積層固着品の平面図。
【図４】この発明の薄板を積層した積層固着品の平面図。
【図５】この発明による長方形をした突起凸部と凹部を成形するパンチの斜視図。
【図６】この発明の長方形の半抜きに成形した突起凸部の平面図と側断面図。
【図７】この発明による長方形の突起凸部と凹部を成形するパンチとダイの斜視図。
【図８】この発明による長方形の半抜きに成形した突起凸部の下面図と側断面図。
【図９】この発明による長方形をした突起凸部と凹部を成形するダイの斜視図。
【図１０】この発明による長方形の半抜きに成形した突起凸部の下面図と側断面図。
【図１１】この発明によるＶ形状に成形した突起凸部の下面図と側断面図。
【図１２】この発明によるＶ形状をした突起凸部と凹部を成形するパンチとダイの斜視図。
【図１３】この発明によるＶ形状に成形した突起凸部の平面図と側断面図。
【図１４】この発明によるＶ形状をした突起凸部と凹部を成形するパンチとダイの斜視図。
【図１５】薄板を積層した積層固着品の斜視図である。
【図１６】長方形の半抜きによる積層固着品の側断面図。
【図１７】従来のＶ形状に成形した積層固着品の側断面図。
【図１８】従来の長方形の半抜きに成形した突起凸部の平面図と側断面図。
【図１９】従来のＶ形状に成形した突起凸部の平面図と側断面図。
【図２０】従来の長方形の半抜きに成形した突起凸部の側断面図。
【図２１】従来の長方形の半抜きによる積層固着品の側断面図。
【図２２】従来の長方形の半抜きによる積層固着品の側断面図。
【符号の説明】
１積層固着品、２薄板、３突起凸部、３ａ嵌合部、４突起凹部、５Ｖ突起凸部、５’傾き角θ部、６・６’凹部、７パンチ、７ａ溝、８ダイ、８ａ・８ｂ溝、９・△ｗ・△ｗ１・△ｗ２・△ｗａ・△ｗｂ圧入代、θ
傾き角。[0001]
[Industrial applications]
The present invention relates to a laminated and fixed product of a thin plate formed by press working and a method of manufacturing the same, and more particularly, to improve the quality of a laminated and fixed product for an electric device such as an electromagnetic switch or a motor and to increase the laminate fixing strength. .
[0002]
[Prior art]
FIG. 15 shows a laminated and fixed product of a thin plate. In the figure, reference numeral 1a denotes a portion for fixing the thin plates to each other.
The shape of the fixing portion 1a includes a half blanking projection and a V-shaped projection. FIGS. 16 and 17 show the state of each fixing portion.
Generally, this kind of laminated and fixed product is formed by stamping a thin plate having a thickness of about 0.3 to 1.0 mm into a predetermined shape, laminating a required number of sheets, and polymerizing and fixing the respective thin plates.
FIG. 18 shows the shapes of the projections when the half blanking projections 3 are fixed to each other. (A) is a top view, (b) is an AA cross-sectional view.
The half blanking projection is formed on the thin plate 2 by projecting a projection 3 having a height of about 50 to 70% of the thickness t of the thin plate 2 and a width W, and about 5 to 15 μm on one side of the projection 3. There is a method in which a concave portion 4 having a press fitting allowance Δw (width W−2Δw) is provided, and the thin plate 2 is superposed on the concave portion 4 by pressing and contacting the projection 3 with the concave portion 4 to form the laminated fixed product 1.
FIG. 19 shows the shape of the projection 5 when the V-shaped projections 5 are fixed to each other. (A) is a top view, (b) is an AA sectional view, and (c) is a BB sectional view.
The shape of the V-projection protrusion 5 is, like the half-projection-projection protrusion 3, a 5 mm to 15 μm press-fitting margin △ w (width W−2 △ w) on one side of the protrusion W having a width W. The thin plate 2 is polymerized by pressing and contacting the projections 5 with the recesses 6 to form the laminated and fixed product 1.
[0003]
[Problems to be solved by the invention]
When the laminated fixed product 1 shown in FIG. 1 is manufactured as described above, there are the following problems.
First, in the method of laminating and fixing by half blanking composed of the protrusion 3 and the recess 4 shown in FIG. 18, when the thickness of the thin plate is about 0.5 mm, the press fitting allowance w of the protrusion 3 is usually 5 to 5 per side. Although the projection convex portion which is about 10 μm and is normally press-fitted and fixed is smoothly pressed into the concave portion 4, the insertion height of the projection is as small as about 50 to 70% of the plate thickness t. In the case where the balance of the press-fitting margin △ w is poor and △ wa> よう wb, the balance of the press-fitting force is lost between the larger and smaller press-fitting margins △ w, as shown in FIG. 3, the fitting portion 3a is incompletely fitted, causing a lateral displacement of the projection 3 to cause the laminated fixed product 1 to tilt or to significantly reduce the fixing strength of the laminated fixed product 1.
When the press fitting allowance Δw is larger than the plate thickness t, the fitting portion 3a of the projection 3 is crushed as shown in FIG. Weaken.
[0004]
In the case of FIG. 19, in order to increase the bonding strength of the laminated bonded product 1, the shape of the projection is V-shaped, and as shown in FIG. Therefore, the inclination angle θ of the V-projecting convex portion 5 becomes large, and a gap Δt is generated between the thin plate pieces, and the space factor of the laminated and bonded product 1 is remarkably deteriorated. It becomes.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to obtain a laminated and fixed product of thin plates and a method of manufacturing the same, which can firmly secure the lamination while ensuring the positioning accuracy between the thin plates.
[0006]
SUMMARY OF THE INVENTION It is an object of the first invention to obtain a laminated and fixed product of a thin plate capable of firmly fixing the laminate while securing the positioning accuracy between the thin plates.
[0007]
A second object of the present invention is to obtain a laminated and fixed product of thin plates, which can secure the positioning accuracy of the thin plates with each other and can further firmly secure the lamination.
[0008]
A third object of the present invention is to provide a laminated and fixed product of thin plates that can further firmly secure the laminate while ensuring the positioning accuracy between the thin plates.
[0009]
A fourth aspect of the present invention is to obtain a laminated and fixed product of thin plates that can further firmly secure the lamination while securing the positioning accuracy between the thin plates.
[0010]
A fifth invention has an object to obtain a laminated and fixed product of thin plates, which can further secure the lamination and fixing while ensuring the positioning accuracy between the thin plates.
[0011]
A sixth invention has an object to obtain a laminated and fixed product of a thin plate which can further firmly secure the lamination while securing the positioning accuracy between the thin plates.
[0012]
It is an object of a seventh invention to obtain a laminated and fixed product of thin plates that can further firmly secure the lamination while securing the positioning accuracy between the thin plates.
[0013]
An eighth aspect of the present invention is to obtain a laminated and fixed product of thin plates, which can secure the positioning and fixing of the thin plates with each other and further strengthen the fixing of the laminate.
[0014]
A ninth invention has an object to obtain a laminated and fixed product of a thin plate which can further firmly secure the lamination while securing the positioning accuracy between the thin plates.
[0015]
A tenth aspect of the present invention is to provide a laminated and fixed product of thin plates that can further secure the lamination and fixing while ensuring the positioning accuracy between the thin plates.
[0016]
An eleventh invention has an object to provide a method of manufacturing a laminated and fixed product of thin plates, which can secure the positioning accuracy between the thin plates and can firmly secure the lamination.
[0017]
A twelfth aspect of the present invention is to provide a method of manufacturing a laminated and fixed product of thin plates, which can secure the positioning accuracy between the thin plates and further strengthen the lamination and fixing.
[0018]
A thirteenth invention has an object to obtain a method of manufacturing a laminated and fixed product of thin plates, which can further secure the lamination and fixing while ensuring the positioning accuracy between the thin plates.
[0019]
A fourteenth aspect of the present invention is to provide a method of manufacturing a laminated and fixed product of thin plates, which can secure the positioning accuracy between the thin plates and can firmly fix the lamination by a simple manufacturing process.
[0020]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a laminated and fixed product in which a plurality of thin plates are laminated and fixed by a projected protrusion and a recess formed on the front surface and the rear surface of the thin plate, respectively. In addition to the circular shape, the size of the protrusion concave portion is locally reduced to locally increase the press-fitting allowance for the size of the protrusion convex portion.
[0021]
In the second invention, the planar shape of the projection convex portion and the concave portion is rectangular.
[0022]
In the third invention, the dimension of one surface on the long side of the rectangular projection concave portion is locally smaller than the dimensions of the other projection concave portions by one or two places, and the press-fitting allowance for the dimension of the projection convex portion is locally reduced. Do more.
[0023]
In the fourth invention, the dimension of the long side of the rectangular projection concave portion is locally made smaller than the dimensions of the other projection concave portions by only one or two places, and the press-fitting allowance for the dimension of the projecting convex portion is locally reduced. Do more.
[0024]
In the fifth invention, the dimension of one surface on the long side of the rectangular projection is locally larger than the dimensions of the other projections, so that the press-fitting allowance for the dimension of the projection is locally increased.
[0025]
In the sixth invention, a plurality of protrusions and protrusions are arranged symmetrically.
[0026]
In the seventh invention, the dimensions of both sides of the longer side of the rectangular projecting recess are locally smaller than the dimensions of the other projecting recesses, so that the press-fitting allowance for the dimension of the projecting portion is locally increased.
[0027]
According to the eighth aspect of the present invention, in a laminated and fixed product formed by laminating and fixing a projected protrusion having a V-shaped cross section formed on a thin plate and a recess, the press-fitting allowance of the V-shaped protrusion and recess is locally reduced. I do.
[0028]
According to the ninth invention, in a laminated and fixed product laminated and fixed by a projected protrusion having a V-shaped cross section formed on a thin plate and a concave portion, the dimension of the tip of the V-shaped protrusion is locally adjusted. The size of the adjacent protrusions is made smaller than the size of the recesses to locally reduce the press-fitting allowance.
[0029]
According to a tenth aspect of the present invention, in a laminated and fixed product laminated and fixed by a projected protrusion having a V-shaped cross section formed on a thin plate and a concave portion, the dimension of the bottom of the V-shaped concave portion is locally reduced. The size is made larger than the size to locally reduce the press-fitting allowance for the size of the protrusion.
[0030]
In the eleventh invention, a step of punching a thin plate into a predetermined shape, a step of forming a projection convex portion and a projection concave portion having a non-circular planar shape on the front and back surfaces of the thin plate and locally increasing press-fitting allowance, And press-fitting the protruding projections and the protruding recesses of the adjacent thin plates and fixing them together with a locally enlarged press-fitting allowance.
[0031]
In the twelfth invention, a step of punching a thin plate into a predetermined shape, a step of forming a projecting convex portion and a projecting concave portion having a non-circular planar shape on the front and back surfaces of the thin plate and locally increasing press-fitting allowance, And a step of press-fitting with a plurality of protruding projections and a plurality of protruding recesses of adjacent thin plates symmetrically arranged, and fixing them together by a locally enlarged press-fitting allowance.
[0032]
In the thirteenth invention, a step of punching the thin plate into a predetermined shape, a step of forming a projection convex portion and a projection concave portion having a V-shaped cross-sectional shape on the front and back surfaces of the thin plate and locally increasing the press-fitting allowance, And press-fitting the projections and projections of the adjacent thin plates and fixing them together by a locally reduced press-in allowance.
[0033]
In the fourteenth aspect, the step of punching the thin plate and the step of forming the projections and the projections are performed simultaneously.
[0034]
The embodiment of the present invention has the following specific means.
The present invention has been made in order to solve the above-described problems, and has a press-fit allowance in rectangular projections and recesses for stacking and fixing thin sheets to a plurality of thin sheets punched by press working. The thin plate is polymerized and fixed by locally changing.
In the V-shaped protrusions and recesses, the height of the V protrusions is substantially the same as the thickness t of the thin plate, and the protrusions and recesses in which the press-fitting allowance is locally changed are used. It is polymerized and laminated and fixed.
[0035]
[Action]
In the first aspect of the present invention, the projections and the projections are made non-circular in planar shape to ensure the positional accuracy between the thin plates, and the projections are locally increased in the press-fitting allowance for the projections and the stacking. Strengthens the fixation.
[0036]
In the second aspect of the invention, the planar shape of the projecting protrusions and the projecting recesses is rectangular, so that the positional accuracy between the thin plates is ensured, and the press-fitting allowance of the projecting recesses to the projecting protrusions is locally increased, thereby laminating and fixing. To strengthen.
[0037]
In the third aspect of the present invention, the planar shape of the projections and the projections is rectangular, so that the positional accuracy between the thin plates is ensured, and the press-fitting allowance for the projections on one side of the long side of the projections is locally reduced. By increasing the number, the lamination adhesion is strengthened.
[0038]
In the fourth invention, the planar shape of the projections and the projections is rectangular, so that the positional accuracy between the thin plates is ensured, and the press-fitting allowance for the projections on both sides of the long side of the projections is locally reduced. By increasing the number, the lamination adhesion is strengthened.
[0039]
In the fifth aspect of the present invention, the planar shape of the protrusions and the protrusions is rectangular, so that positional accuracy between the thin plates is ensured, and the press-fitting allowance for the protrusions on one side of the long side of the protrusions is locally reduced. By increasing the number, the lamination adhesion is strengthened.
[0040]
In the sixth aspect of the invention, the planar shape of the projecting projections and the projecting recesses is rectangular, so that the positional accuracy between the thin plates is secured, and the press-fitting allowance for the projecting projection on one long side of the projecting recesses is locally determined. In addition, by increasing the number of protrusions and the protrusion protrusions symmetrically, the stacking and fixing are strengthened.
[0041]
In the seventh aspect, the planar shape of the projections and the projections is rectangular, so that the positional accuracy between the thin plates is ensured, and the press-fitting allowance for the projections on both sides on the long side of the projections is locally reduced. By increasing the number, the lamination adhesion is strengthened.
[0042]
In the eighth invention, the V-shaped cross section of the protruding projections and the protruding recesses secures the positional accuracy between the thin plates, and locally increases the press-fitting allowances of the protruding protruding portions and the recesses, thereby laminating and fixing. To strengthen.
[0043]
In the ninth aspect of the present invention, the cross-sectional shape of the projections and the projections is V-shaped, thereby ensuring the positional accuracy between the thin plates, and increasing the press-fitting allowance of the projections into the projections and the recesses locally. Strengthens the fixation.
[0044]
In the tenth aspect, the V-shaped cross section of the projection and the projection is used to secure the positional accuracy between the thin plates, and the projection is formed by locally increasing the press-fitting allowance for the projection to the projection. Strengthens the fixation.
[0045]
In the eleventh invention, the thin plates are fixed to each other by the protrusions and the protrusions which have a non-circular planar shape and the press-fitting allowance is locally increased, thereby strengthening the lamination fixation.
[0046]
In the twelfth invention, the thin plates are fixed to each other by the protrusions and protrusions having a non-circular planar shape and the press-fitting margin is locally increased, and the plurality of protrusions and protrusions are arranged symmetrically. To strengthen the lamination.
[0047]
According to the thirteenth aspect, the thin plates are fixed to each other by the protrusions and the protrusions having a V-shaped cross-section and having a locally increased press-fitting allowance, thereby strengthening the lamination.
[0048]
According to the fourteenth aspect, the step of punching the thin plate and the step of forming the projections and the projections are performed simultaneously.
[0049]
The embodiment of the present invention has the following specific operation.
According to the present invention, in the rectangular projections and recesses respectively formed on the front and back of a plurality of thin plates, whether the press-in allowance on one side or both sides of the long side of the protrusion is locally larger than the main part press-in allowance. Alternatively, the press-in allowance on one side or both sides of the long side of the concave portion is locally made larger than the main part press-in allowance, the average press-in allowance is made smaller than the conventional one, and the maximum press-in allowance is made larger than the conventional press-in allowance. Is also increased, so that the press-fitting proceeds smoothly and not only improves the lamination accuracy of the laminated and bonded product, but also acts to obtain a strong lamination bonding force.
[0050]
In another aspect of the invention, the width of the tip of the V-shaped projection to be press-fit into the recess is set smaller than the width of the main press-fit portion at the inclination angle θ of the locally adjacent projection. Either locally reduce the press-fitting allowance of the projection to the width of the projection, or make the width of the recess into which the V projection is fitted larger than the width of the recess fitted by the adjacent angle θ portion In order to locally reduce the press-fitting allowance for the size of the protrusions, the protrusions are smoothly pressed into the recesses at the initial stage when the protrusions are pressed into the recesses, and the lamination accuracy of the laminated and bonded product is improved. In addition to the improvement, at the inclination angle θ portion of the V-projection convex portion where the press-fitting margin is set to a large value, it acts to obtain a stronger lamination fixing force.
[0051]
【Example】
Embodiment 1 FIG.
The present invention has been made in order to obtain a laminated and fixed product 1 in which the inclination and torsion of a laminated product which occur when laminating and fixing thin plates are small, and to secure a laminating and fixing force.
FIG. 1 shows the shapes of a punch 7 and a die 8 for punching out the projections 3 and forming the recesses 4 in the shape of a semi-blanked rectangular projection.
As shown in FIG. 1, two grooves 7a are provided on one side of the long side of the punch 7 to locally increase the press-fitting allowance △ w1 by the additional press-fitting allowance △ w1 from the main part press-fitting allowance △ w. The protrusion 3 (width W) and the recess 4 (width W ′) shown in FIG. 2 are formed into a plurality of thin plates 2, and the press-in allowance Δw when the protrusion 3 is pressed into the recess 4 is reduced. By locally increasing the additional press-fitting margin Δw1 formed in the above, the fixing force of the laminated fixed product 1 is increased.
Here, 2 △ w = WW ′.
The additional press-fitting margin △ w1 added to the press-fitting margin △ w is about 5 to 10 μm when the thickness t of the thin plate 2 is about 0.5 mm. The fitting accuracy between the protrusion 3 and the recess 4 for fulfilling the role of a guide when the portion 3 is fitted into the recess 4 is improved, and the additional press-fitting margin △ w1 locally increased is press-fitted into the recess 4. As a result, a strong lamination fixing force can be obtained.
In the case where the protrusion 3 and the recess 4 are opposed to each other, such as the laminated fixed product 1 shown in FIG. 15, the direction in which the additional press-fitting allowance w1 is formed is opposed to each other as shown in FIGS. In this case, since the press-fitting allowance can be balanced, it is easy to obtain a more stable product of the laminated and adhered product 1 with higher product accuracy.
[0052]
Embodiment 2. FIG.
In the second embodiment, as shown in FIG. 5, a groove 7a for increasing the press-in allowance by an additional press-in allowance △ w1 from the main part press-in allowance △ w into the recess 4 locally on both long sides of the punch 7 as shown in FIG. Are formed at two locations, and the projection 3 and the recess 4 shown in FIG. 6 are formed into a thin plate, and the press-in allowance Δw when the projection 3 (width W) is pressed into the recess 4 (width W ′) is reduced. By locally increasing the additional press fitting allowance w1 formed in the concave portion 4, the fixing force of the laminated fixed product 1 is increased.
Here, 2 △ w = WW ′.
In the second embodiment, the additional press-fitting margin △ w1 is formed on both surfaces of the protrusion 3 compared to the first embodiment, so that a stronger fixing strength of the laminated fixed product 1 can be obtained.
In the second embodiment, as shown in FIG. 6, the additional press-fitting margin △ w1 is provided on both long sides of the concave portion 4. Since the press-fitting margin of the additional press-fitting w1 is provided, the lamination fixing force enough to withstand practical use is provided for a center-shift of the press-fitting protrusion 3 and the recess 4 of the press-fitting fitting about w. be able to.
[0053]
Embodiment 3 FIG.
In the third embodiment, in the punch 7 and the die 8 as shown in FIG. 7, the additional press-fitting margin is locally formed on one long side of the die 8 for forming the additional press-fitting margin △ w1 on the projection 3 of the thin plate. A groove 8a for increasing the press-in allowance by Δw1 is provided at two places, and a protrusion 3 (width W) and a recess 4 (width W ′) shown in FIG. The same effect as in the first embodiment can be obtained by locally increasing the press-fitting allowance Δw when press-fitting into the concave portion 4 by the additional press-fitting allowance Δw1 formed in the projection convex portion 3.
Here, 2 △ w = WW ′.
[0054]
Embodiment 4. FIG.
In the fourth embodiment, as in the third embodiment, the main part press fitting allowance w into the concave portion 4 is locally press-fitted into both sides of the long side of the die 8 as shown in FIG. In order to increase the margin, two grooves 8b are provided, and the protrusion 3 (width W) and the recess 4 (width W ') shown in FIG. The fixing force of the laminated and adhered product 1 is increased by locally increasing the margin Δw by the additional press-fit margin Δw1 formed on the projection 3.
Here, 2 △ w = WW ′.
In this method, since the additional press-fitting margin Δw1 is formed on both surfaces of the projection 3, it is possible to obtain a stronger fixing strength of the laminated fixed product 1 than in the method of the third embodiment.
In the fourth embodiment, as shown in FIG. 10, the additional press fitting allowance w1 is provided on each of the long sides of the protrusion 3 so that the press fit allowance Δw1 is provided between the protrusion 3 and the recess 4. In addition to w, there is a press-fit allowance of additional press-fit allowance △ w1, so that a center displacement of the protrusion convex portion 3 and the concave portion 4 to be press-fitted by the press-fit allowance △ w is sufficient for practical use. Can be strong.
[0055]
Embodiment 5 FIG.
In the fifth embodiment, the V-shaped projections 5 (width W) and the depressions 6 (width W ′) are formed as shown in FIG.
In the punch 7 and the die 8 shown in FIG. 12, the width dimension of the tip of the V-shaped projection 5 of the thin plate is set at the inclination angle θ portion 5 ′ of the locally adjacent projection as shown in FIG. To reduce the width dimension W by 2 @ w2, the size of the die 8 for forming the tip of the projection 5 is reduced by .DELTA.w2 on one side from the other dimensions.
[0056]
Conventionally, as shown in FIG. 17, in order to increase the fixing strength of the laminated fixed product 1, the height of the projected protrusions 5 is set to be about two thin plates t, so that the tips of the protrusions 5 are V-shaped. There is an advantage in that the protrusions cause elongation due to the extrusion molding, and the protrusions at the tip of the protrusions reduce the press-fitting allowance and facilitate the insertion of the protrusions 5 into the recesses 6 during lamination and fixing. Since the height of the projection 5 is set to be equal to two thin plates t, the inclination angle θ of the V-shape becomes large, and a gap of Δt is generated between the individual thin plates, and the space factor of the laminated and bonded product 1 is remarkably deteriorated. There is a disadvantage that re-pressurization is required after lamination and fixing.
[0057]
In the fifth embodiment, in order to improve the space factor of the laminated fixed product 1, the height of the V-shaped projection protrusion 5 is set to substantially the height of one thin plate t, and the inclination angle of the V-shape is reduced. On the other hand, since the height of the V-shape is low, a change in the dimension in the press-fitting width direction due to the elongation of the V-shape forming hardly occurs. Therefore, as shown in FIG. 12, the width of the die 8 for forming the tip of the projection 5 is made smaller by 2 △ w2 than the width of the other parts, and the width of the tip of the projection 5 is made narrower. By doing so, the press-fitting is made smooth.
Note that the fixing strength of the laminated fixed product 1 is firmly fixed at the inclination angle θ portion 5 ′ of the protrusion having a predetermined press fit Δw.
Here, 2 △ w = WW ′.
[0058]
Embodiment 6 FIG.
In the sixth embodiment, since the width of the front end of the V-shaped protrusion 5 is locally narrowed by 2 △ w2 in the fifth embodiment as shown in FIG. 11, the front end of the protrusion 5 is press-fitted. In order to make the margin Δw narrower than the dimension of the inclination angle θ part 5 ′ of the locally adjacent protrusion, the size of the die 8 for forming the tip of the protrusion 5 is made smaller by 2 △ w2 than the other dimensions. On the other hand, in the sixth embodiment, the punch 7 for forming the recess 6 for press-fitting the V-shaped projection 5 shown in FIG. 13 is used, and the tip of the projection 5 is formed as shown in FIG. The punch 7b for forming the recess 6 to be fitted is wider than other dimensions by Δw2 on one side, so that the width of the recess 6 to which the projection 5 of the recess 6 fits can be made wider. The press fit is smooth.
Incidentally, the fixing strength of the laminated fixed product 1 is firmly fixed in the same manner as in the fifth embodiment at the inclination angle θ portion 5 ′ of the protrusion having a predetermined press fitting allowance Δw.
[0059]
In the first embodiment, the main part press-in allowance of the protrusion convex part and the concave part is made smaller than that of the conventional method, and the press-in allowance of one side of the long side of the protrusion convex part is locally reduced by one or two other protrusion convex parts. Since the press-fitting margin of the portion is made larger, the positioning accuracy is secured by the main-part press-fitting margin, and the lamination fixing force can be made stronger by the part where the press-fitting margin is locally increased.
[0060]
In the second embodiment, the main part press-fitting allowance of the projection convex part and the concave part is made smaller than that of the conventional method, and the press-in allowance of both surfaces on the long side of the protrusion convex part is locally reduced by one or two other protrusion convex parts. Since the press-fitting margin of the portion is made larger, the positioning accuracy is secured by the main-part press-fitting margin, and the lamination fixing force can be made stronger by the part where the press-fitting margin is locally increased.
[0061]
In the third embodiment, the main part press-in allowance of the protrusion convex part and the concave part is made smaller than that of the conventional method, and the press-in allowance of one side of the long side of the protrusion concave part is locally reduced by one or two other parts of the protrusion concave part. Since the press-fitting margin is set larger, the positioning accuracy can be secured by the main-part press-fitting margin, and the lamination fixing force can be further strengthened by the portion where the press-fitting margin is locally increased.
[0062]
In the fourth embodiment, the main part press-in allowance of the projection convex part and the concave part is made smaller than that of the conventional method, and the press-in allowance of both surfaces on the long side of the protrusion concave part is locally reduced by one or two places to the other part of the protrusion concave part. Since the press-fitting margin is set larger, the positioning accuracy can be ensured by the main-part press-fitting margin, and the lamination fixing force can be further strengthened by the locally increased press-fitting margin.
[0063]
In the fifth embodiment, the width of the tip of the V-shaped protrusion is made smaller than the width of the inclined portion of the locally adjacent protrusion, and the formed protrusion is pressed into the recess. By reducing the initial press-fitting allowance, the press-fitting of the entire V-shaped protrusion is made smoother, and the positioning accuracy is secured, and the lamination fixing force of the lamination-fixed product is further strengthened.
[0064]
In the sixth embodiment, the width of the central portion of the V-shaped concave portion is set to be larger than the width of the inclined portion of the locally adjacent concave portion, and the initial press-fitting allowance at the time of press-fitting the formed projection convex portion into the concave portion is reduced. By reducing the number, the press-fitting of the entire V-shaped projection is made smoother while securing the positioning accuracy, and the lamination fixing force of the lamination-fixed product 10 is further increased.
[0065]
【The invention's effect】
According to the first aspect of the invention, it is possible to obtain a laminated and fixed product of a thin plate that can firmly secure the lamination while ensuring the positioning accuracy between the thin plates.
[0066]
According to the second aspect of the invention, it is possible to obtain a laminated and fixed product of thin plates, which can further firmly secure the lamination while ensuring the positioning accuracy between the thin plates.
[0067]
According to the third aspect of the invention, it is possible to obtain a laminated and fixed product of thin plates that can further firmly secure the lamination while securing the positioning accuracy between the thin plates.
[0068]
According to the fourth aspect of the invention, it is possible to obtain a laminated and fixed product of the thin plates, which can further firmly secure the lamination while ensuring the positioning accuracy between the thin plates.
[0069]
According to the fifth aspect of the invention, it is possible to obtain a laminated and fixed product of thin plates, which can further secure the lamination and fixing while securing the positioning accuracy between the thin plates.
[0070]
According to the sixth aspect of the invention, it is possible to obtain a laminated and fixed product of the thin plates, which can further firmly secure the lamination while securing the positioning accuracy between the thin plates.
[0071]
According to the seventh aspect of the invention, it is possible to obtain a laminated and fixed product of thin plates, which can further secure the lamination and fixing while securing the positioning accuracy between the thin plates.
[0072]
According to the eighth aspect of the invention, it is possible to obtain a laminated and fixed product of the thin plates, which can further firmly fix the lamination while securing the positioning accuracy between the thin plates.
[0073]
According to the ninth aspect, it is possible to obtain a laminated and fixed product of the thin plates, which can secure the positioning and fixing of the thin plates with each other and further strengthen the lamination and fixing.
[0074]
According to the tenth aspect of the invention, it is possible to obtain a laminated and fixed product of thin plates, in which the positioning and fixing of the thin plates can be ensured, and the lamination and fixing can be extremely enhanced.
[0075]
According to the eleventh aspect, it is possible to obtain a method of manufacturing a laminated and fixed product of thin plates, which can secure the lamination and fixing while ensuring the positioning accuracy between the thin plates.
[0076]
According to the twelfth aspect, it is possible to obtain a method of manufacturing a laminated and fixed product of thin plates, which can secure the positioning accuracy between the thin plates and further strengthen the lamination and fixing.
[0077]
According to the thirteenth aspect, it is possible to obtain a method of manufacturing a laminated and fixed product of thin plates, which can further firmly secure the lamination while securing the positioning accuracy between the thin plates.
[0078]
According to the fourteenth aspect, it is possible to obtain a method of manufacturing a laminated and fixed product of thin plates that can firmly laminate and secure the positioning of the thin plates in a simple manufacturing process while ensuring the positioning accuracy between the thin plates.
[Brief description of the drawings]
FIG. 1 is a perspective view of a punch and a die for forming rectangular projections and depressions according to the present invention.
FIGS. 2A and 2B are a plan view and a side sectional view of a protruding projection formed into a rectangular half blank according to the present invention; FIGS.
FIG. 3 is a plan view of a laminated fixed product obtained by laminating thin plates of the present invention.
FIG. 4 is a plan view of a laminated fixed product obtained by laminating thin plates of the present invention.
FIG. 5 is a perspective view of a punch for forming rectangular projections and depressions according to the present invention.
6A and 6B are a plan view and a side sectional view of a projection protruding from a rectangular half-punch according to the present invention.
FIG. 7 is a perspective view of a punch and a die for forming rectangular projections and depressions according to the present invention.
FIG. 8 is a bottom view and a side cross-sectional view of a projection protruding from a rectangular half-punch according to the present invention.
FIG. 9 is a perspective view of a die for forming rectangular projections and depressions according to the present invention.
FIG. 10 is a bottom view and a side cross-sectional view of a protrusion that is formed into a rectangular half-blank according to the present invention.
11A and 11B are a bottom view and a side sectional view of a projection formed in a V shape according to the present invention.
FIG. 12 is a perspective view of a punch and a die for forming V-shaped projections and depressions according to the present invention.
FIG. 13 is a plan view and a side cross-sectional view of a projection convex portion formed into a V shape according to the present invention.
FIG. 14 is a perspective view of a punch and a die for forming V-shaped projections and depressions according to the present invention.
FIG. 15 is a perspective view of a laminated fixed product obtained by laminating thin plates.
FIG. 16 is a side cross-sectional view of a laminated and fixed product formed by half-blanking a rectangle.
FIG. 17 is a side sectional view of a conventional laminated and fixed product formed into a V shape.
18A and 18B are a plan view and a side cross-sectional view of a projection protruded from a conventional rectangular half-blank.
19A and 19B are a plan view and a side sectional view of a projection formed in a conventional V shape.
FIG. 20 is a side sectional view of a projection protruding portion formed into a conventional rectangular half-blank.
FIG. 21 is a side sectional view of a conventional laminated and fixed product formed by half-blanking a rectangle.
FIG. 22 is a side sectional view of a conventional laminated and fixed product formed by half-blanking a rectangle.
[Explanation of symbols]
Reference Signs List 1 laminated fixed product, 2 thin plate, 3 protrusion protrusion, 3a fitting portion, 4 protrusion recess, 5V protrusion protrusion, 5 'tilt angle θ portion, 6.6' recess, 7 punch, 7a groove, 8 die, 8a・ 8b groove, 9 ・ △ w ・ △ w1 ・ △ w2 ・ △ wa ・ △ wb Press-in allowance, θ
Tilt angle.

Claims

In a laminated and fixed product in which a plurality of thin plates are stacked and fixed by the projected protrusions and recesses formed on the front and back surfaces of the thin plate, respectively, the projections and the recesses have a non-circular planar shape, and A laminated and fixed product of thin plates, characterized in that the size of the projection concave portion is locally reduced so that the press-fitting allowance for the size of the projection convex portion is locally increased.

2. The laminated and fixed product of a thin plate according to claim 1, wherein the planar shape of the projection convex portion and the concave portion is rectangular.

In a laminated and bonded product in which a plurality of thin plates punched by press working are laminated and fixed by rectangular half-blanked stamped protrusions and concave portions formed on the front and back surfaces of the thin plate, respectively, the long side of the rectangular protrusion concave portion Characterized in that the dimension of one side of the side is locally smaller by one or two places than the dimensions of the other projections and recesses to locally increase the press-fitting allowance for the dimensions of the projections.

In a laminated and fixed product in which thin plates are laminated and fixed by a semi-blanked stamped projection formed by a thin plate and convex portions and concave portions, the dimensions of both sides on the long side of the rectangular concave portion are locally limited to only one or two places. A laminated fixed product of thin plates, characterized in that the size of the protrusion is smaller than the size of the other protrusion concave portion so as to locally increase the press-fitting allowance for the size of the protrusion convex portion.

In a laminated and fixed product in which thin plates are laminated and fixed by a rectangular half-pierced projection protrusion and a concave portion formed on a thin plate, the dimension of one side of the long side of the rectangular protrusion is locally changed to another protrusion. A laminated fixed product of thin plates, characterized in that the size of the portion is larger than the size of the portion, and the press-fitting allowance for the size of the projection concave portion is locally increased.

The laminated and fixed product of a thin plate according to claim 3 or 5, wherein a plurality of protrusions and protrusions are arranged symmetrically.

In a laminated and fixed product in which a thin plate is laminated and fixed by a semi-blanked stamped projection formed on a thin plate and a concave portion, the dimensions of both sides of the long side of the rectangular projection are locally adjusted by other projections. A laminated fixed product of thin plates, characterized in that the size of the portion is larger than the size of the portion and the press-in allowance for the size of the concave portion is locally increased.

In a laminated and fixed product laminated and fixed by a projecting projection and a recess having a V-shaped cross section formed on a thin plate, the press-fitting allowance of the V-shaped projection and the recess is locally reduced. Laminated fixed product of thin plate.

In a laminated and fixed product laminated and fixed by a projected protrusion having a V-shaped cross-sectional shape formed on a thin plate and a concave portion, the dimension of the tip of the V-shaped protrusion is locally adjusted. A laminated and fixed product of thin plates, characterized in that the size is smaller than the size and the press-fitting allowance for the size of the concave portion is locally reduced.

In a laminated and fixed product laminated and fixed by a projected protrusion having a V-shaped cross section formed on a thin plate and a concave portion, the size of the bottom of the V-shaped concave portion is made larger than the size of a locally adjacent concave portion. A laminated and fixed product of a thin plate, wherein a press-fitting allowance for a dimension of a convex portion is locally reduced.

A step of punching a thin plate into a predetermined shape, a step of forming a projecting convex portion and a projecting concave portion having a non-circular planar shape on the front and back surfaces of the thin plate and locally increasing the press-fitting allowance, and laminating a plurality of thin plates adjacent to each other And press-fitting the projections and recesses of the thin plates and fixing them together by a locally increased press-in allowance.

A step of punching a thin plate into a predetermined shape, a step of forming a projecting convex portion and a projecting concave portion having a non-circular planar shape on the front and back surfaces of the thin plate and locally increasing the press-fitting allowance, and laminating a plurality of thin plates adjacent to each other Press-fitting in a state where the plurality of projections and the plurality of projections of the thin plate are respectively arranged symmetrically and fixed to each other by a locally increased press-fitting allowance. Production method.

A step of punching a thin plate into a predetermined shape, a step of forming a projection convex portion and a projection concave portion having a V-shaped cross-sectional shape on the front and rear surfaces of the thin plate and locally increasing the press-fitting allowance, And press-fitting the projections and recesses of the thin plates and fixing them together by a locally reduced press-in allowance.

14. The method according to claim 11, wherein the step of punching the thin plate and the step of forming the projections and the projections are performed simultaneously.