JP4472797B2 - Metal product pressing and progressive processing - Google Patents

Metal product pressing and progressive processing Download PDF

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JP4472797B2
JP4472797B2 JP29416298A JP29416298A JP4472797B2 JP 4472797 B2 JP4472797 B2 JP 4472797B2 JP 29416298 A JP29416298 A JP 29416298A JP 29416298 A JP29416298 A JP 29416298A JP 4472797 B2 JP4472797 B2 JP 4472797B2
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metal material
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一夫 中島
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株式会社ピーエヌ
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Description

【０００１】
【発明の属する技術分野】
本発明は金属製品のプレス加工方法に関するものであり、例えば、自動車用電磁クラッチのアマチュア、ギヤ、鍔付き部品、突起付き部品、キャップ等の各種金属製品をプレス加工するのに適する方法である。
【０００２】
【従来の技術】
電磁クラッチのアマチュアを始めとする各種の金属製品は、通常はプレス加工により所望形状に打ち抜いたり、孔開けしたり、曲げたりしている。通常のプレス加工はダイスの上にセットした金属材料の上から、ダイスよりも外径の小さなパンチを降下させて金属材料を所望外形に打ち抜いたり、金属材料の所望箇所に孔をあけたりしている。プレス加工には各種方法があり、特殊な方法としてファインブランキング法や対向ダイスせん断法等といった精密せん断方法がある。しかし、いずれの方法であっても、ダイスの上にセットした金属材料の上から、それよりも外径の小さなパンチを降下させて金属材料を打ち抜いたり、孔をあけたりするものであり、加工原理は同じである。
【０００３】
【発明が解決しようとする課題】
従来の一般的なプレス加工で打ち抜かれた製品の分離面は、全面が平滑にはなりにくく、一部に、だれ、破断面、バリ等が発生する。金属材料が厚くなるとそれらが特に発生し易くなる。ファインブランキング法や対向ダイスせん断法によれば分離面の寸法精度が高い（寸法が出易い）という利点はあるが、加工工程が多くなるとか、バリが出易いといった新たな課題がある。
【０００４】
【課題を解決するための手段】
本発明の目的はプレス加工された製品の分離面に、だれ、破断面、バリ等が発生しにくく、金属材料が多少厚くなっても、それらが殆ど発生せず、また、金属製品を連続的に成形できるようにしたプレス加工方法を提供することにある。
【０００５】
本願の第１の発明である金属製品のプレス加工方法は、金属材料１をダイス２の内形よりも大きな外形の加圧具３により加圧して、当該金属材料１の一部を肉厚方向途中までダイス２に押込んでダイス２内に突出する押込み部４を形成すると共に押込み部４の上部外周の全周に金属材料１と連続する肉薄部５を形成し、そのダイス２の内形よりも小さな外形の打ち抜き用パンチ６により前記加圧具３による加圧方向と同方向からプレスして、その打ち抜き用パンチ６と前記ダイス２により前記押込み部４の全周を前記肉薄部５から剪断して打ち抜き分離する加工方法である。
【０００６】
本願の第２の発明である金属製品のプレス加工方法は、金属材料１をダイス２の内形よりも大きな外形の加圧具３により加圧して、当該金属材料１の一部を肉厚方向途中までダイス２に押込んでダイス２内に突出する押込み部４を形成すると共に押込み部４の上部外周の全周に金属材料１と連続する肉薄部５を形成し、その金属材料１を前記ダイス２よりも内形の大きな打抜き用ダイス９に移し替えて押込み部４と肉薄部５の全周とを打抜き用ダイス９の内側になるように配置し、打抜き用ダイス９の内形よりも小さな外形の打ち抜き用パンチ６を前記加圧具３による加圧方向と同方向からプレスして、その打ち抜き用パンチ６と前記移し替え後のダイス９により前記肉薄部５の全周を金属材料１から剪断して打ち抜き分離して、前記押込み部４の上縁全周に前記肉薄部５が突出した薄板状の鍔１３の付いた鍔付き製品１４を成形する加工方法である。
【０００７】
本願の第３の発明である金属製品のプレス加工方法は、金属材料１をダイス２の内形よりも大きな外形の加圧具３により加圧して、当該金属材料１の一部を肉厚方向途中までダイス２に押込んでダイス２内に突出する押込み部４を形成すると共に押込み部４の上部外周の全周に金属材料１と連続する肉薄部５を形成し、その金属材料１を前記ダイス２よりも内形の大きな打抜き用ダイス９に移し替えて押込み部４と肉薄部５の一部とを打抜き用ダイス９の内側になるように配置し、打抜き用ダイス９の内形よりも小さな外形の打ち抜き用パンチ６を前記加圧具３による加圧方向と同方向からプレスしてその打ち抜き用パンチ６と前記移し替え後のダイス９により前記肉薄部５の周方向の一部を金属材料１から、押込み部４の周方向の一部を肉薄部５から夫々剪断して打ち抜き分離して、前記押込み部４の上周縁の周方向一部に前記肉薄部５の一部が側方に突出した薄板状の突起１５の付いた突起付製品１６を成形する加工方法である。
【０００８】
本願の第４の発明である金属製品の順送加工方法は、金属材料１を多数のステージに間欠送りしてそれらステージにおいて当該金属材料１をプレス加工する金属製品の順送加工方法において、前記ステージ中の任意のステージにおいて、当該金属材料１を、請求項１乃至請求項３のいずれかに記載の金属製品のプレス加工方法により加工する順送加工方法である。
【００１０】
【発明の実施の形態】
（実施形態１）
本発明の金属製品の加工方法の第１の実施形態を、図７に示す自動車用電磁クラッチのアマチュア３０を成形する場合を例として図１に基づいて説明する。この加工方法は次の１〜３の工程からなる。
１）図１（ａ）の様に、ダイス２の上に板状の金属材料１をセットする。
２）図１（ｂ）の様に、金属材料１をダイス２の内形よりも大きな外形の加圧具３によりその上方から加圧して、当該金属材料１をその肉厚方向の途中までダイス２に押込んで、押込み部４を形成すると共にその外周に肉薄部５を形成する。この場合、押込み部４は金属材料１に図４に示す様に形成される。
３）ダイス２内に途中まで押込まれた押込み部４の上方から、図１（ｃ）の様に、前記加圧具３とは別であり且つ前記ダイス２の内形よりも小さな外形の打ち抜き用パンチ６を降下させて押込み部４を打ち抜く。この場合、押込み部４はその周囲の肉薄部５から分離されるため、弱い圧力でも確実に打ち抜かれ、打ち抜かれた製品１１の外周面（分離面）１２に、だれ、破断面、バリ等がほとんど発生しない。
【００１１】
（実施形態２）
本発明の金属製品の加工方法の第２の実施形態を、図２（ｄ）の様に製品１１の上縁全周に鍔１３の付いた鍔付製品１４を成形する場合を例として説明する。この加工方法は次の１〜４の工程からなる。
１）図２（ａ）の様に、ダイス２の上に板状の金属材料１をセットする。
２）図２（ｂ）の様に、金属材料１をその上方から、ダイス２の内形よりも大きな外形の加圧具３により加圧して、当該金属材料１の途中までをダイス２に押込む。
３）図２（ｃ）の様に、前記金属材料１を前記ダイス２の内形よりも大きな内形の打抜き用ダイス９の上にセットし替える。このとき、押込み部４と肉薄部５の全周とを打抜き用ダイス９の内側になるように配置する。その金属材料１の上方に、前記加圧具３とは別であって打抜き用ダイス９の内形よりも小さな外形の打ち抜きパンチ６を配置する。
４）押込み部４の上方から打ち抜きパンチ６を降下させて、押込み部４と肉薄部５の全周とを打ち抜いて、製品１１の上縁全周に鍔１３の付いた鍔付製品１４を成形する。この場合、肉薄部５が弱い圧力で剪断されるため、打ち抜かれた鍔付製品１４の外周面（分離面）１２には、だれ、破断面、バリ等がほとんど発生しない。
【００１２】
（実施形態３）
本発明の金属製品の加工方法の第３の実施形態を、図３（ｄ）の様に製品１１の上縁の周方向一部に突子１５の付いた突子付製品１６を成形する場合を例として説明する。この加工方法は次の１〜４の工程からなる。
１）図３（ａ）の様に、ダイス２の上に板状の金属材料１をセットする。
２）図３（ｂ）の様に、金属材料１をダイス２の内形よりも大きな外形の加圧具３により上方から加圧して、当該金属材料１をその肉厚方向の途中までダイス２に押込んで、押込み部４を形成すると共にその外周に肉薄部５を形成する。
３）図３（ｃ）の様に、前記金属材料１を前記ダイス２の内形よりも大きな内形の第２ダイス９の上にセットし替える。このとき、押込み部４と肉薄部５とが第２ダイス９の内側に位置するように配置する。また、打抜き用ダイス９の内形よりも小さな外形の打ち抜き用パンチ６を配置する。
４）図３（ｄ）の様に押込み部４及び肉薄部５の上から打ち抜き用パンチ６を降下させて、押込み部４と肉薄部５の一部とを一緒に打ち抜いて、製品１１の上周縁の一部に突起１５が突設された突起付製品１６を得る。この場合、押込み部４及び突起１５は肉薄部５から分離されるため弱い圧力でも確実に打ち抜かれ、打ち抜かれた突起付製品１６の外周面（分離面）１２に、だれ、破断面、バリ等がほとんど発生しない。
【００１４】
（実施形態４）
本発明の金属製品の加工方法の第４の実施形態を、図７に示す自動車用電磁クラッチのアマチュア３０を順送加工方法に組み込んで実施する場合を例として図５に基づいて説明する。この加工方法は次の１〜６の工程よりなる。
１）帯状の長尺の金属材料１を図５の右方向に間欠送りして、同図（ａ）の外形ＥＭ加工ステージＡのダイスの上に金属材料１をセットする。
２）外形ＥＭ加工ステージＢにおいて金属材料１をその上方から、ダイスの内形よりも大きな外形の加圧具により加圧して、図５（ｂ）の様に当該金属材料１の途中までをダイスに押込んで、アマチュア３０の輪郭形状と同じ円形の押込み部４を形成すると同時に押込み部４の周囲四ケ所にガイド穴３２を打ち抜く。
３）次のアイドルステージＣの後の平押しステージＤにおいて、前記金属材料１を平押して整形する。
４）その後の穴開けステージＥにおいて押込み部４の内側の所定箇所を打ち抜いて３本の細長な円弧穴２０を開口する。
５）次の穴開けステージＦにおいて、押込み部４の中央部を打ち抜いて円形穴２１を開口する。
６）次のアイドルステージＧの後のブランキングステージＨにおいて、図５（ｃ）の様に、押込み部４の上方から打ち抜きパンチ６を降下して、押込み部４を打ち抜いて（ブランキングして）肉薄部５から分離する。この場合、ダイス２は外形ＥＭ加工ステージＢにおけるダイス１と同じ内径のものを使用するが、打ち抜きパンチ６にはそのダイス２の内形と同じかそれよりも小さな外形のものを使用する。
【００１５】
（実施形態５）
本発明の金属製品の加工方法の第５の実施形態を、自動車用電磁クラッチのアマチュアを順送加工方法に組み込んで実施する場合を例として図６に基づいて説明する。この方法は押込み部４の外側のスプラップ８をカットして、押込み部４を得るようにしたものである。
１）帯状の長尺の金属材料１を図６の右方向に間欠送りして、ステージＡのダイスの下に金属材料１をセットする。
２）外形ＥＭ加工ステージＢにおいて金属材料１をその下方から、ダイスの内形よりも大きな外形の加圧具により加圧して、図６（ｂ）の様に当該金属材料１の途中までをダイス２に押込んで、円形の押し込み部４を形成する。同時に押込み部４の周囲四ケ所にガイド穴３２を打ち抜く。
３）次のアイドルステージＣの後の平押しステージＤにおいて、前記金属材料１を下方から平押して整形する。
４）その後の穴開けステージＥにおいて、押込み部４の内側の所定箇所を下方から上方に打ち抜いて３本の細長な円弧穴２０を開口する。同時に、押込み部４の中央部を打ち抜いて円形穴２１を開口する。
５）次の外形カットステージＦにおいて、図６（ｃ）の様に、肉薄部５の上にその上方からカットパンチ７を降下して当該肉薄部５をカットして、押込み部４の上下両外側の斜線部分（スクラップ）８を除去する。この場合、ダイス９は金属材料１の下に配置される。カットパンチ７には肉薄部５の裏側外形と同じかそれよりも多少大きな内形のものを使用する。
６）図６のカットオフステージＧにおいて、押込み部４を連結しているキャリア（斜線部分）２５をカットして、押込み部４を個々に分離（カットオフ）する。
【００１６】
（他の実施形態）
本発明ではダイスを固定してパンチを降下させることも、それとは逆にパンチを固定してダイスを上昇させることも、パンチとダイスの双方を相互に近づけたり、離したりすることもできる。また、パンチとダイスを上下逆に配置することもできる。
【００１７】
図示した実施形態では、金属材料を押込んでアマチュアの輪郭部分（押込み部）４を成形した後に、押込み部４の内側に穴開け加工をしているが、それらの加工は他の順序、即ち、順不同で行うこともできる。また、図示されていない他のステージを組み込んだり、不要なステージを除いたりすることもできる。本発明アマチュアの加工に限らず、他の金属製品又は任意の形状の金属製品の加工に利用できることはもちろんである。
【００１８】
【発明の効果】
本願発明の請求項１の加工方法では、金属材料をその肉厚方向の途中まで押込んで、押込み部４の外側に肉薄部５を形成し、その後に、肉薄部５をパンチにより打ち抜いたり、カットしたりして押込み部４を肉薄部５から分離するため、肉薄部５が弱い圧力で容易に剪断され、押込み部４が容易に打ち抜かれる。
【００１９】
本願発明のうち請求項２の加工方法では、請求項１の加工方法と同じ効果があり、更に、上部周縁の全周に鍔１３の付いた製品とか、上部周縁の一部に突子１５の付いた製品を得ることができる。
【００２１】
本願発明のうち請求項３と請求項４に記載の金属製品の加工方法では、請求項１、２の加工方法を順送加工に組み込むため、金属製品を連続加工することができ、作業性が向上し、コストダウンにもなる。
【図面の簡単な説明】
【図１】 本発明の加工方法の第１の実施形態を示すものであり（ａ）は押込み前の説明図、（ｂ）は押込み後の説明図、（ｃ）は打ち抜き工程の説明図、（ｄ）は（ｂ）における金属材料の押込み部の詳細図。
【図２】 本発明の加工方法の第２の実施形態を示すものであり（ａ）は押込み前の説明図、（ｂ）は押込み後の説明図、（ｃ）は打ち抜き前の説明図、（ｄ）は打ち抜き後の説明図。
【図３】 本発明の加工方法の第３の実施形態を示すものであり（ａ）は押込み前の説明図、（ｂ）は押込み後の説明図、（ｃ）は打ち抜き前の説明図、（ｄ）は打ち抜き後の説明図である。
【図４】 本発明の加工方法における押込み後の金属材料の一例を示す斜視図。
【図５】 （ａ）は本発明の順送加工方法の平面説明図、（ｂ）は（ａ）の順送加工方法における外形ＥＭ加工工程の断面図、（ｃ）は（ａ）の順送加工方法におけるブランク工程の断面図。
【図６】 （ａ）は本発明の順送加工方法の平面説明図、（ｂ）は（ａ）の順送加工方法における外形ＥＭ加工工程の断面図、（ｃ）は（ａ）の順送加工方法における外形カット工程の断面図。
【図７】 本発明の金属製品の加工方法により加工される金属製品の一例であるアマチュアの斜視図。
【符号の説明】
１ 金属材料
２ ダイス
３ 加圧具
４ 押込み部
５ 肉薄部
６ 打ち抜き用パンチ
８ スクラップ
９ 打抜き用ダイス[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of pressing a metal product, and is a method suitable for pressing various metal products such as amateur electromagnetic clutches, gears, parts with hooks, parts with protrusions, caps, and the like.
[0002]
[Prior art]
Various metal products such as electromagnetic clutch amateurs are usually stamped, punched, or bent into a desired shape by pressing. In normal pressing, a punch with a smaller outer diameter than the die is lowered from above the metal material set on the die, and the metal material is punched into a desired shape, or a hole is made in a desired portion of the metal material. Yes. There are various types of press working, and special methods include a precision shearing method such as a fine blanking method and an opposing die shearing method. However, in any method, a punch with a smaller outer diameter is dropped from above the metal material set on the die to punch out the metal material or make a hole. The principle is the same.
[0003]
[Problems to be solved by the invention]
The separation surface of a product punched by a conventional general press process is difficult to be smooth, and a part of the separation surface, a broken surface, a burr, and the like are generated. As metal materials become thicker, they are particularly likely to occur. The fine blanking method and the opposed die shearing method have the advantage that the dimensional accuracy of the separation surface is high (dimensions are easy to come out), but there are new problems such as an increased number of processing steps and burrs.
[0004]
[Means for Solving the Problems]
The object of the present invention is to prevent the occurrence of dripping, fracture surfaces, burrs, etc. on the separation surface of the pressed product, and even if the metal material becomes a little thicker, they hardly occur, and the metal product is continuously formed. An object of the present invention is to provide a press working method that can be formed into a mold.
[0005]
In the metal product press working method according to the first invention of the present application, the metal material 1 is pressed with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and a part of the metal material 1 is subjected to the thickness direction. From the inner shape of the die 2, a pressing portion 4 that is pushed into the die 2 halfway is formed to form a pushing portion 4 that protrudes into the die 2, and a thin portion 5 that is continuous with the metal material 1 is formed on the entire outer periphery of the pushing portion 4. The punching punch 6 having a small outer shape is pressed in the same direction as the pressing direction by the pressurizing tool 3, and the entire periphery of the pushing portion 4 is sheared from the thin portion 5 by the punching punch 6 and the die 2. Then, it is a processing method of punching and separating.
[0006]
In the metal product pressing method according to the second invention of the present application, the metal material 1 is pressed with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and a part of the metal material 1 is subjected to the thickness direction. A push-in portion 4 that is pushed into the die 2 halfway is formed, and a thin portion 5 that is continuous with the metal material 1 is formed on the entire circumference of the upper outer periphery of the push-in portion 4. It is transferred to a punching die 9 having an inner shape larger than 2, and the pushing portion 4 and the entire circumference of the thin portion 5 are arranged inside the punching die 9, and are smaller than the inner shape of the punching die 9. The punching punch 6 having an outer shape is pressed in the same direction as the pressurizing direction by the pressurizing tool 3, and the entire circumference of the thin portion 5 is formed from the metal material 1 by the punching punch 6 and the die 9 after the transfer. Shears, punches and separates and pushes The thin portion 5 upper edge all around the 4 is a processing method for forming a flanged product 14 with a thin-plate flange 13 protruding.
[0007]
In the metal product pressing method according to the third invention of the present application, the metal material 1 is pressed with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and a part of the metal material 1 is subjected to the thickness direction. forming a thin portion 5 continuous with the metal material 1 in the entire circumference of the upper outer circumference of the pushing portion 4 to form a pushing portion 4 projecting into the die 2 by pushing do the die 2 halfway, the die and the metal material 1 It is transferred to a punching die 9 having an inner shape larger than 2, and the pushing portion 4 and a part of the thin portion 5 are arranged inside the punching die 9, and are smaller than the inner shape of the punching die 9. The punching punch 6 having an outer shape is pressed in the same direction as the pressurizing direction by the pressurizing tool 3, and a part of the thin portion 5 in the circumferential direction is made of a metal material by the punching punch 6 and the transferred die 9. 1 to part of the circumferential direction of the push-in part 4 A product 16 with protrusions having a thin plate-like protrusion 15 in which a part of the thin part 5 protrudes laterally at a part in the circumferential direction of the upper peripheral edge of the pushing part 4 by shearing from the part 5 respectively. This is a processing method for molding.
[0008]
According to a fourth aspect of the present invention of the present application, there is provided a method for progressively processing a metal product, wherein the metal material 1 is intermittently fed to a number of stages and the metal material 1 is pressed at those stages. It is a progressive processing method which processes the said metal material 1 with the press processing method of the metal product in any one of Claims 1 thru | or 3 in the arbitrary stages in a stage.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
A first embodiment of the metal product processing method of the present invention will be described with reference to FIG. 1 by taking as an example the case of forming an armature 30 for an automobile electromagnetic clutch shown in FIG. This processing method includes the following steps 1 to 3.
1) A plate-shaped metal material 1 is set on a die 2 as shown in FIG.
2) As shown in FIG. 1 (b), the metal material 1 is pressed from above by a presser 3 having an outer shape larger than the inner shape of the die 2, so that the metal material 1 is halfway in the thickness direction. 2 to form a push-in portion 4 and a thin portion 5 on the outer periphery thereof. In this case, the pushing part 4 is formed in the metal material 1 as shown in FIG.
3) From above the pushing part 4 pushed into the die 2 halfway, as shown in FIG. 1 (c), punching out an outer shape which is different from the pressing tool 3 and smaller than the inner shape of the die 2. The punch 6 is lowered to punch out the pushing portion 4. In this case, since the pushing portion 4 is separated from the surrounding thin portion 5, the pushing portion 4 is surely punched even with a weak pressure, and the outer peripheral surface (separation surface) 12 of the punched product 11 is free from any cracks, fracture surfaces, burrs, etc. It hardly occurs.
[0011]
(Embodiment 2)
A second embodiment of the method for processing a metal product of the present invention will be described by taking as an example the case of forming a brazed product 14 with ridges 13 around the entire upper edge of the product 11 as shown in FIG. . This processing method includes the following steps 1 to 4.
1) A plate-shaped metal material 1 is set on a die 2 as shown in FIG.
2) As shown in FIG. 2 (b), the metal material 1 is pressed from above with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and the metal material 1 is partially pressed against the die 2. Include.
3) As shown in FIG. 2C, the metal material 1 is set on a die 9 for punching having an inner shape larger than the inner shape of the die 2. At this time, the pushing portion 4 and the entire circumference of the thin portion 5 are arranged so as to be inside the punching die 9. A punching punch 6 having an outer shape smaller than the inner shape of the punching die 9 is arranged above the metal material 1, which is different from the pressurizing tool 3.
4) The punching punch 6 is lowered from above the pushing portion 4, and the pushing portion 4 and the entire circumference of the thin portion 5 are punched to form a brazed product 14 with a flange 13 on the entire upper edge of the product 11. To do. In this case, since the thin portion 5 is sheared with a weak pressure, the outer peripheral surface (separation surface) 12 of the punched brazed product 14 hardly generates any cracks, fracture surfaces, burrs, and the like.
[0012]
(Embodiment 3)
In the third embodiment of the method for processing a metal product of the present invention, as shown in FIG. 3 (d), a product 16 with protrusions having a protrusion 15 attached to a part in the circumferential direction of the upper edge of the product 11 is formed. Will be described as an example. This processing method includes the following steps 1 to 4.
1) A plate-shaped metal material 1 is set on a die 2 as shown in FIG.
2) As shown in FIG. 3B, the metal material 1 is pressed from above with a pressurizing tool 3 having an outer shape larger than the inner shape of the die 2, and the metal material 1 is partially pressed in the thickness direction. And a thin portion 5 is formed on the outer periphery thereof.
3) As shown in FIG. 3C, the metal material 1 is set on the second die 9 having an inner shape larger than the inner shape of the die 2. At this time, it arrange | positions so that the pushing part 4 and the thin part 5 may be located inside the 2nd die | dye 9. FIG. A punching punch 6 having an outer shape smaller than the inner shape of the punching die 9 is disposed.
4) As shown in FIG. 3 (d), the punching punch 6 is lowered from above the indented portion 4 and the thin portion 5, and the indented portion 4 and a part of the thin portion 5 are punched together to A product 16 with protrusions, in which protrusions 15 protrude from a part of the periphery, is obtained. In this case, since the pushing portion 4 and the protrusion 15 are separated from the thin portion 5, the pushing portion 4 and the protrusion 15 are surely punched even under a weak pressure. Hardly occurs.
[0014]
(Embodiment 4)
A fourth embodiment of the metal product processing method of the present invention will be described with reference to FIG. 5 by taking as an example the case of incorporating the automotive electromagnetic clutch armature 30 shown in FIG. 7 into the progressive processing method. This processing method includes the following steps 1 to 6.
1) The strip-shaped long metal material 1 is intermittently fed in the right direction in FIG. 5 and the metal material 1 is set on the die of the external EM processing stage A in FIG.
2) In the outer shape EM processing stage B, the metal material 1 is pressed from above with a pressurizing tool having an outer shape larger than the inner shape of the die, and the metal material 1 is halfway in the die as shown in FIG. To form the circular pushing portion 4 having the same contour shape as that of the armature 30, and at the same time, the guide holes 32 are punched at four locations around the pushing portion 4.
3) In the flat press stage D after the next idle stage C, the metal material 1 is flat pressed to be shaped.
4) In a subsequent drilling stage E, a predetermined portion inside the pushing portion 4 is punched to open three elongated arc holes 20.
5) In the next drilling stage F, the circular hole 21 is opened by punching out the central portion of the pushing portion 4.
6) At the blanking stage H after the next idle stage G, as shown in FIG. 5 (c), the punching punch 6 is lowered from above the pushing portion 4, and the pushing portion 4 is punched (blanked). ) Separate from the thin part 5. In this case, the die 2 has the same inner diameter as that of the die 1 in the outer shape EM processing stage B, but the punching punch 6 has an outer shape that is the same as or smaller than the inner shape of the die 2.
[0015]
(Embodiment 5)
A fifth embodiment of the metal product processing method of the present invention will be described with reference to FIG. 6 by taking as an example the case of incorporating an automobile electromagnetic clutch armature into the progressive processing method. In this method, the spur 8 outside the pushing portion 4 is cut to obtain the pushing portion 4.
1) The strip-shaped long metal material 1 is intermittently fed to the right in FIG. 6 and the metal material 1 is set under the die of the stage A.
2) In the outer shape EM processing stage B, the metal material 1 is pressed from below with a pressurizing tool having an outer shape larger than the inner shape of the die, and the metal material 1 is halfway in the die as shown in FIG. 2 to form a circular pushing portion 4. At the same time, the guide holes 32 are punched in four places around the pushing portion 4.
3) In the flat press stage D after the next idle stage C, the metal material 1 is flat pressed from below to be shaped.
4) In the subsequent drilling stage E, a predetermined portion inside the pushing portion 4 is punched upward from below to open three elongated arc holes 20. At the same time, the circular portion 21 is opened by punching out the central portion of the pushing portion 4.
5) In the next outer shape cutting stage F, as shown in FIG. 6C, the cut punch 7 is lowered onto the thin portion 5 from above to cut the thin portion 5, and both the upper and lower sides of the pushing portion 4 are The outer hatched portion (scrap) 8 is removed. In this case, the die 9 is disposed under the metal material 1. The cut punch 7 has an inner shape that is the same as or slightly larger than the back side outer shape of the thin portion 5.
6) In the cut-off stage G in FIG. 6, the carrier (shaded portion) 25 connecting the pushing portions 4 is cut, and the pushing portions 4 are individually separated (cut off).
[0016]
(Other embodiments)
In the present invention, the die can be fixed and the punch can be lowered, conversely, the punch can be fixed and the die can be raised, or both the punch and the die can be brought close to or separated from each other. Further, the punch and the die can be arranged upside down.
[0017]
In the illustrated embodiment, the metal material is pushed in to form the amateur contour portion (pushing portion) 4, and then the inside of the pushing portion 4 is drilled. It can also be done in any order. Also, other stages not shown can be incorporated, or unnecessary stages can be removed. Needless to say, the present invention is not limited to the processing of the amateur, but can be used to process other metal products or metal products of any shape.
[0018]
【The invention's effect】
In the processing method according to the first aspect of the present invention, the metal material is pushed halfway in the thickness direction to form the thin portion 5 on the outside of the push portion 4, and thereafter, the thin portion 5 is punched or cut. In order to separate the pushing portion 4 from the thin portion 5, the thin portion 5 is easily sheared with a weak pressure, and the pushing portion 4 is easily punched out.
[0019]
Of the present invention, the processing method of claim 2 has the same effect as the processing method of claim 1, and further, the product with the flange 13 on the entire periphery of the upper periphery or the protrusion 15 on a part of the upper periphery. You can get the product with the attached.
[0021]
In the metal product processing method according to claims 3 and 4 of the present invention, the metal product can be continuously processed because the processing method according to claims 1 and 2 is incorporated into progressive processing, and workability is improved. Improves and reduces costs.
[Brief description of the drawings]
1A and 1B show a first embodiment of a processing method of the present invention, wherein FIG. 1A is an explanatory diagram before pressing, FIG. 1B is an explanatory diagram after pressing, FIG. 1C is an explanatory diagram of a punching process, (D) is a detailed view of the indented portion of the metal material in (b).
2A and 2B show a second embodiment of the processing method of the present invention, wherein FIG. 2A is an explanatory diagram before pressing, FIG. 2B is an explanatory diagram after pressing, FIG. 2C is an explanatory diagram before punching, (D) is explanatory drawing after punching.
FIG. 3 shows a third embodiment of the processing method of the present invention, wherein (a) is an explanatory view before pressing, (b) is an explanatory diagram after pressing, (c) is an explanatory diagram before punching, (D) is explanatory drawing after punching.
FIG. 4 is a perspective view showing an example of a metal material after being pressed in the processing method of the present invention.
5A is an explanatory plan view of the progressive processing method of the present invention, FIG. 5B is a cross-sectional view of the outer shape EM processing step in the progressive processing method of FIG. 5A, and FIG. 5C is the sequential order of FIG. Sectional drawing of the blank process in a feeding method.
6A is a plan view of the progressive processing method of the present invention, FIG. 6B is a cross-sectional view of an outer shape EM processing step in the progressive processing method of FIG. 6A, and FIG. Sectional drawing of the external shape cutting process in a feeding method.
FIG. 7 is a perspective view of an amateur as an example of a metal product processed by the metal product processing method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Metal material 2 Dies 3 Pressurizing tool 4 Pushing part 5 Thin part 6 Punch for punching 8 Scrap 9 Die for punching

Claims (4)

金属材料（１）をダイス（２）の内形よりも大きな外形の加圧具（３）により加圧して、当該金属材料（１）の一部を肉厚方向途中までダイス（２）に押込んでダイス（２）内に突出する押込み部（４）を形成すると共に押込み部（４）の上部外周の全周に金属材料（１）と連続する肉薄部（５）を形成し、そのダイス（２）の内形よりも小さな外形の打ち抜き用パンチ（６）により前記加圧具（３）による加圧方向と同方向からプレスして、その打ち抜き用パンチ（６）と前記ダイス（２）により前記押込み部（４）の全周を前記肉薄部（５）から剪断して打ち抜き分離することを特徴とする金属製品のプレス加工方法。  The metal material (1) is pressed by a pressurizing tool (3) having an outer shape larger than the inner shape of the die (2), and a part of the metal material (1) is pushed into the die (2) halfway in the thickness direction. Then, a pressing portion (4) protruding into the die (2) is formed, and a thin portion (5) continuous with the metal material (1) is formed on the entire circumference of the upper outer periphery of the pressing portion (4). The punching punch (6) having an outer shape smaller than the inner shape of 2) is pressed from the same direction as the pressing direction by the pressurizing tool (3), and the punching punch (6) and the die (2) A method for pressing a metal product, characterized in that the entire periphery of the indented portion (4) is sheared from the thin portion (5) and punched and separated. 金属材料（１）をダイス（２）の内形よりも大きな外形の加圧具（３）により加圧して、当該金属材料（１）の一部を肉厚方向途中までダイス（２）に押込んでダイス（２）内に突出する押込み部（４）を形成すると共に押込み部（４）の上部外周の全周に金属材料（１）と連続する肉薄部（５）を形成し、その金属材料（１）を前記ダイス（２）よりも内形の大きな打抜き用ダイス（９）に移し替えて押込み部（４）と肉薄部（５）の全周とを打抜き用ダイス（９）の内側になるように配置し、打抜き用ダイス（９）の内形よりも小さな外形の打ち抜き用パンチ（６）を前記加圧具（３）による加圧方向と同方向からプレスして、その打ち抜き用パンチ（６）と前記移し替え後のダイス（９）により前記肉薄部（５）の全周を金属材料（１）から剪断して打ち抜き分離して、前記押込み部（４）の上縁全周に前記肉薄部（５）が突出した薄板状の鍔（１３）の付いた鍔付き製品（１４）を成形することを特徴とする金属製品のプレス加工方法。The metal material (1) is pressed with a pressurizing tool (3) having an outer shape larger than the inner shape of the die (2), and a part of the metal material (1) is pushed into the die (2) halfway in the thickness direction. The pushing portion (4) protruding into the die (2) is formed and the thin portion (5) continuous with the metal material (1) is formed on the entire outer periphery of the pushing portion (4). (1) is transferred to a punching die (9) having an inner shape larger than that of the die (2), and the pushing portion (4) and the entire circumference of the thin portion (5) are placed inside the punching die (9). The punch for punching (6) having an outer shape smaller than the inner shape of the punching die (9) is pressed in the same direction as the pressing direction by the pressurizing tool (3), and the punch for punching is punched. the entire periphery of the metal material of the thin portion by the post (6) and said sorting die (9) (5) (1 And then punching and separating to form a product (14) with a hook with a thin plate-like ridge (13) projecting the thin part (5) on the entire upper edge of the indented part (4). A metal product press working method. 金属材料（１）をダイス（２）の内形よりも大きな外形の加圧具（３）により加圧して、当該金属材料（１）の一部を肉厚方向途中までダイス（２）に押込んでダイス（２）内に突出する押込み部（４）を形成すると共に押込み部（４）の上部外周の全周に金属材料（１）と連続する肉薄部（５）を形成し、その金属材料（１）を前記ダイス（２）よりも内形の大きな打抜き用ダイス（９）に移し替えて押込み部（４）と肉薄部（５）の一部とを打抜き用ダイス（９）の内側になるように配置し、打抜き用ダイス（９）の内形よりも小さな外形の打ち抜き用パンチ（６）を前記加圧具（３）による加圧方向と同方向からプレスしてその打ち抜き用パンチ（６）と前記移し替え後のダイス（９）により前記肉薄部（５）の周方向の一部を金属材料（１）から、押込み部（４）の周方向の一部を肉薄部（５）から夫々剪断して打ち抜き分離して、前記押込み部（４）の上周縁の周方向一部に前記肉薄部（５）の一部が側方に突出した薄板状の突起（１５）の付いた突起付製品（１６）を成形することを特徴とする金属製品のプレス加工方法。The metal material (1) is pressed with a pressurizing tool (3) having an outer shape larger than the inner shape of the die (2), and a part of the metal material (1) is pushed into the die (2) halfway in the thickness direction. The pushing portion (4) protruding into the die (2) is formed and the thin portion (5) continuous with the metal material (1) is formed on the entire outer periphery of the pushing portion (4). (1) is transferred to a punching die (9) having a larger inner shape than the die (2), and the pushing portion (4) and a part of the thin portion (5) are placed inside the punching die (9). The punching punch (6) having an outer shape smaller than the inner shape of the punching die (9) is pressed in the same direction as the pressurizing direction by the pressurizing tool (3), and the punching punch ( the thin portion by a die (9) after 6) and said sorting (5) a metal material part of the circumferential direction of the From (1), the circumferential portion of the pushing portion (4) is sheared from the thin portion (5) and punched and separated, and the thin portion is formed on the circumferential portion of the upper peripheral edge of the pushing portion (4). A method of pressing a metal product, characterized in that a product (16) with a projection having a thin plate-like projection (15) in which a part of (5) projects sideways is formed. 金属材料（１）を多数のステージに間欠送りしてそれらステージにおいて当該金属材料（１）をプレス加工する金属製品の順送加工方法において、前記ステージ中の任意のステージにおいて、当該金属材料（１）を、請求項１乃至請求項３のいずれかに記載の金属製品のプレス加工方法により加工することを特徴とする金属製品の順送加工方法。  In the progressive processing method of a metal product in which the metal material (1) is intermittently fed to a number of stages and the metal material (1) is pressed at those stages, the metal material (1 ) Is processed by the metal product pressing method according to any one of claims 1 to 3, wherein the metal product is progressively processed.
JP29416298A 1998-10-15 1998-10-15 Metal product pressing and progressive processing Expired - Fee Related JP4472797B2 (en)

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JP2004011744A (en) * 2002-06-06 2004-01-15 Minebea Co Ltd Toothed electromagnetic clutch brake
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JP2009279658A (en) * 2009-09-02 2009-12-03 Pn:Kk Press working method for armature for electromagnetic clutch
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