JP2009202230A - Method for press-forming partial component - Google Patents

Method for press-forming partial component Download PDF

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JP2009202230A
JP2009202230A JP2008084744A JP2008084744A JP2009202230A JP 2009202230 A JP2009202230 A JP 2009202230A JP 2008084744 A JP2008084744 A JP 2008084744A JP 2008084744 A JP2008084744 A JP 2008084744A JP 2009202230 A JP2009202230 A JP 2009202230A
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die
hole
advanced
forging
molding
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Yoshiichi Sakamura
芳一 阪村
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Sakamura Machinery Co Ltd
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Sakamura Machinery Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To repeatedly form a partial component having a through-hole at the center part from a long linear blank in one simple pressing process without generating any scrap. <P>SOLUTION: The linear blank A is advanced by gripping a grip-feed 5 which is provided on a die 3 side and movable forwards and backwards, and the tip-end part of the blank is projected, by a prescribed length, to the front side from the inside of the through-hole 3a of the die 7. In the projecting state, a punch 4 provided with a formed recessed part 4a and a center pin 6 which is movable forwards and backwards within a forming projecting part 4b and has the same cross section as the linear blank A, is advanced to the die 3 side, and the front surface of the punch is brought into close contact with the front surface of the die to form a forming space S. Thereafter, the center pin 6 is advanced into the forming recessed part 4a, and the blank projecting part is pushed into the middle part of the forming space S to form the partial component N'. After that, the center pin 6 is further advanced into the through-hole 3a of the die 3 by opening the grip-feed 5 and then, the formation is completed by separating into the partial component N having the through-hole N1 and the linear blank A, without generating any scrap. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、六角や四角等の多角形状とした断面形状の長尺線状素材から断面形状が素材の断面形状よりも大きく、かつ中心部に貫通丸穴を有するパーツ部品をスクラップゼロにて繰り返し成形するパーツ部品の圧造成形方法に関する。  The present invention repeats a part part having a cross-sectional shape larger than the cross-sectional shape of the material from a long linear material having a polygonal shape such as a hexagon or a square and having a through-hole in the center at zero scrap. The present invention relates to a method for forging a part to be molded.

従来、ナットなどのパーツ部品の圧造成形方法としては、まず、長尺の線状素材を所定長さに切断し、次に、その切断素材を第１圧造工程に移送して、ダイとパンチにより所望する外形の中間成形品に成形し、その後、その中間成形品を第２圧造工程に移送して、ダイとパンチにより中間成形品の中心部を打ち抜いて貫通孔を形成して最終成形品であるパーツ部品を成形するようにしている。  Conventionally, as a method of forging a part such as a nut, first, a long linear material is cut into a predetermined length, and then the cut material is transferred to a first forging process by a die and a punch. After forming into an intermediate molded product having a desired outer shape, the intermediate molded product is transferred to the second forging process, and the center part of the intermediate molded product is punched out with a die and a punch to form a through hole. A part part is molded.

ところが、上記した従来のパーツ部品の圧造成形方法によれば、線状の素材を単に所定寸法に切断するための切断機構が圧造工程とは別に必要となるし、また、切断機構により切断された所定寸法のブランクは、素材の断面形状と同一断面形状であるため、ブランクの形状から最終成形品までの成形加工量が多くなり、そのため多くの圧造工程が必要となる。その結果、大型で複雑な圧造成形機が必要で高価となる。その上、中間成形品の中心部を打ち抜いて貫通孔を形成するため、材料ロスが生じる問題も有していた。  However, according to the above-described conventional method for forming parts of parts, a cutting mechanism for simply cutting a linear material into a predetermined size is required separately from the forging step, and the cutting mechanism cuts the linear material. Since the blank of a predetermined dimension has the same cross-sectional shape as the cross-sectional shape of the material, the amount of forming process from the shape of the blank to the final molded product increases, and therefore many forging steps are required. As a result, a large and complex forging machine is necessary and expensive. In addition, since the center hole of the intermediate molded product is punched to form a through hole, there is a problem that material loss occurs.

そこで、本発明は、上記のような問題に鑑み考案したもので、六角や四角等の多角形状とした断面形状の長尺線状素材から断面形状が素材の断面形状よりも大きく、かつ中心部に貫通丸穴を有するパーツ部品をスクラップゼロにて繰り返し成形するパーツ部品の圧造成形方法の提供を課題とする。
素材からボリュームが線径の２倍以上で、中心部に貫通孔を有するパーツ部品をスクラップゼロにて繰り返し成形するパーツ部品の圧造成形方法であって、まず、パーツ部品を成形する線状素材をダイ側に備えられた進退可能なグリップフィードで掴み、グリップフィードを前進させて線状素材の先端部をダイの貫通孔内からその前方側に所定長さ突出するよう供給し、次いで、その突出状態を保持した状態の基で、成形凹所と成形凹所内に進退可能なセンターピンとを備えたパンチをダイ側に前進させてパンチ前面をダイ前面に密着させ、密着するパンチとダイとにより所望の成形空間を形成し、その後、センターピンを成形凹所内に前進させて、素材の突出部を成形空間の中程まで押し込んでパーツ部品を成形し、然る後、グップフィードを開いて後退させ、センターピンをさらにダイ内に前進させることにより、貫通孔を有するパーツ部品と線状素材とに切り離して成形が完了するようにしたことを特徴とする。Therefore, the present invention has been devised in view of the above problems, and the cross-sectional shape is larger than the cross-sectional shape of the material from the long linear material having a cross-sectional shape such as a hexagon or a square, and the center portion. An object of the present invention is to provide a forging method for part parts in which a part part having a through-hole is repeatedly formed at zero scrap.
This is a method for forging part parts by repeatedly forming part parts with a volume more than twice the wire diameter and having a through-hole in the center at zero scrap. Grasping with the grip feed that can be moved forward and backward provided on the die side, the grip feed is advanced, and the tip of the linear material is supplied so as to protrude from the through hole of the die to the front side by a predetermined length, and then the protrusion A punch with a molding recess and a center pin that can be advanced and retracted into the molding recess is advanced to the die side with the state maintained, and the front surface of the punch is brought into close contact with the front surface of the die. After that, the center pin is advanced into the molding recess, and the protruding part of the material is pushed to the middle of the molding space to mold the part part. Retracted open, by advancing to the further die center pin, characterized in that molded separately into a part component and the linear material having a through hole was made to complete.

また、本願の請求項２に記載の発明は、請求項１に記載の線状素材の断面形状を六角や四角等の多角形状とし、その鋼種により温間、熱間状態に加熱して圧造成形するようにしたことを特徴とする。  In addition, the invention according to claim 2 of the present application is formed by forming the cross-sectional shape of the linear material according to claim 1 into a polygonal shape such as a hexagon or a square, and heating it in a warm or hot state by the steel type, thereby forming by forging. It was made to do.

本発明によれば、上記した構成により、長尺の線状素材からボリュームが線径の２倍以上で、中心部に貫通孔を有するパーツ部品を簡単な１つ圧造工程でスクラップゼロにて繰り返し成形できる。  According to the present invention, with the above-described configuration, a part part having a through-hole in the center portion of a long linear material having a volume more than twice the wire diameter is repeated at zero scrap in a simple one forging process. Can be molded.

また、線状素材の断面形状を六角や四角等の多角形状とし、その鋼種により温間、熱間状態に加熱して圧造成形するようにすれば、例えば六角ナットや四角ナットの成形が容易にできるのでこのましい。  In addition, if the cross-sectional shape of the linear material is a polygonal shape such as a hexagon or a square, and the forging is performed by heating it in a warm or hot state with the steel type, for example, a hexagonal nut or a square nut can be easily molded. This is so good.

以下、本発明の実施の形態を図に基づいて説明する。
図１は本発明のパーツ部品の圧造成形方法で用いる圧造成形機の概略平面図を示し、この圧造成形機１は、機台２の所定位置にダイ３が固設されていると共に、このダイ３の前面側に、ダイ３に対向して前進、後退するパンチ４が備えられている。また、機台２のダイ３後方側には、断面円形で長尺の線状素材Ａを掴んでダイ３側に一定長さずつ供給するグリップフィード５が開閉及び進退可能に備えられている。Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic plan view of a forging machine used in the forging method for parts of the present invention. In this forging machine 1, a die 3 is fixed at a predetermined position of a machine base 2, and this die 3 is provided with a punch 4 that moves forward and backward against the die 3. In addition, a grip feed 5 is provided on the rear side of the die 3 of the machine base 2 so as to be able to open, close and advance by gripping a long linear material A having a circular cross section and supplying it to the die 3 by a predetermined length.

ダイ３は線状素材Ａが挿通可能な貫通孔３ａとその貫通孔３ａにおける前面側周りに成形用の環状突部３ｂを有している。パンチ４はその前部に成形凹所４ａと成形凹所４ａの中心部に形成された通孔４ｂ内に進退可能に設けられるセンターピン６とを備えている。センターピン６の断面形状は線状素材と同一で、適宜駆動機構によりパンチ４の移動位置に応じて所定のタイミングで図１に示す通孔４ｂ内の後退位置と、図３に示す成形凹所４ａ内の成形前進位置と、図４に示す貫通孔３ａ内の切断前進位置との３位置に進退移動するようになされている。  The die 3 has a through hole 3a through which the linear material A can be inserted, and an annular projection 3b for molding around the front side of the through hole 3a. The punch 4 is provided with a molding recess 4a and a center pin 6 provided in a front portion thereof so as to be able to advance and retreat in a through hole 4b formed at the center of the molding recess 4a. The cross-sectional shape of the center pin 6 is the same as that of the linear material. The retracted position in the through-hole 4b shown in FIG. 1 and the forming recess shown in FIG. The molding advance position in 4a and the cutting advance position in the through hole 3a shown in FIG. 4 are moved forward and backward.

グリップフィード５は線状素材Ａを挟持できるように開閉可能な複数のグリップ体５ａ，５ｂと、グリップ体５ａ，５ｂを開閉させるエアー又は油圧などを用いた開閉機構（図示せず）と、グリップ体５ａ，５ｂをダイ後面に対して進退動させるシリンダー等の移動機構（図示せず）とを備えている。そして、グリップ体５ａ，５ｂは図４に示す後退位置にて線状素材Ａを掴み、その状態で前進することにより、図１に示すように線状素材Ａの先端部をダイ３の貫通孔３ａ内からその前方側に所定長さＬだけ突出させるようになっている。  The grip feed 5 includes a plurality of grip bodies 5a and 5b that can be opened and closed so as to sandwich the linear material A, an opening and closing mechanism (not shown) using air or hydraulic pressure that opens and closes the grip bodies 5a and 5b, and a grip. A moving mechanism (not shown) such as a cylinder for moving the bodies 5a and 5b back and forth with respect to the rear surface of the die is provided. Then, the grip bodies 5a and 5b grip the linear material A at the retracted position shown in FIG. 4 and move forward in this state, so that the tip of the linear material A is passed through the through hole of the die 3 as shown in FIG. A predetermined length L projects from the front side of 3a.

次に、上記した圧造成形機を基にパーツ部品の圧造成形方法について説明する。具体的には、長尺の線状素材Ａからボリュームが線径の２倍以上で、中心部に貫通孔Ｎ１を有するナットＮを圧造成形する場合について説明する。  Next, a method for forging and forming parts will be described based on the above forging and forming machine. Specifically, a case will be described in which a nut N having a volume of at least twice the wire diameter and having a through hole N1 in the center is formed from a long linear material A by forging.

まず、線状素材Ａをグリップフィード５で掴み、その状態でグリップフィード５を前進させることにより、図１に示すように線状素材Ａの先端部をダイ３の貫通孔３ａ内からその前方側に所定長さＬだけ突出するよう供給する。  First, the linear material A is gripped by the grip feed 5, and the grip feed 5 is advanced in that state, so that the tip of the linear material A is moved from the through hole 3a of the die 3 to the front side as shown in FIG. Is supplied so as to protrude by a predetermined length L.

次に、グリップフィード５によりその突出状態を保持した状態の基で、成形凹所４ａと進退可能なセンターピン６とを備えたパンチ４をダイ３側に前進させてパンチ４前面をダイ３前面に密着させる。これにより密着したパンチ４の成形凹所４ａとダイ３の前面部とによりナットＮの成形空間Ｓを形成する。  Next, the punch 4 provided with the molding recess 4a and the movable center pin 6 is advanced to the die 3 side with the grip feed 5 holding the protruding state, and the front surface of the punch 4 is moved to the front surface of the die 3. Adhere to. Thus, a molding space S of the nut N is formed by the molding recess 4a of the punch 4 and the front surface of the die 3 which are in close contact with each other.

その後、パンチ４の通孔４ｂ内に位置するセンターピン６を成形凹所４ａ内に前進させて、図３に示すように素材Ａの突出部ａを成形空間Ｓの中程まで押し込んで線状素材Ａと一体のナット部Ｎ′を成形する。  Thereafter, the center pin 6 located in the through hole 4b of the punch 4 is advanced into the molding recess 4a, and the protruding portion a of the material A is pushed to the middle of the molding space S as shown in FIG. A nut portion N ′ integral with the material A is molded.

然る後、グリップフィード５のグリップ体５ａ，５ａを開いたうえでこのグリップフィード５を後退させる一方、グリップ体５ａ，５ａが開いたタイミングでセンターピン６をさらにダイ３の貫通孔３ａ内に前進させることにより、図４に示すように線状素材Ａと一体のナット部Ｎ′を切り離して、最終成形品である貫通孔Ｎ１を有するナットＮを成形する。  Thereafter, the grip bodies 5a, 5a of the grip feed 5 are opened and the grip feed 5 is retracted. At the timing when the grip bodies 5a, 5a are opened, the center pin 6 is further moved into the through hole 3a of the die 3. By moving forward, as shown in FIG. 4, the nut portion N ′ integrated with the linear material A is cut off, and the nut N having the through hole N <b> 1 as the final molded product is formed.

ナット成形後は、パンチ４を待機位置に後退させると共に、センターピン６も通孔４ｂ内に後退させ、さらにナットＮを例えばパンチ６側に内装される押出ピン（図示せず）によりパンチ６の成形凹所４ａから外部に排出する。  After forming the nut, the punch 4 is retracted to the standby position, the center pin 6 is also retracted into the through-hole 4b, and the nut N is inserted into the punch 6 by, for example, an extrusion pin (not shown) provided on the punch 6 side. It discharges outside from the molding recess 4a.

一方、ダイ側では、グリップフィード５を閉動作してグリップ体５ａ，５ａにより線状素材Ａを再び掴み、その状態でグリップフィード５を前進させて、図１に示すように線状素材Ａの先端部をダイ３の貫通孔３ａ内からその前方側に所定長さＬだけ突出するよう供給するのである。これにより、次の成形が可能な最初のスタンバイ状態になり、上記した一連のナット成形動作を繰り返し行なうことができる。  On the other hand, on the die side, the grip feed 5 is closed and the linear material A is gripped again by the grip bodies 5a, 5a. In this state, the grip feed 5 is advanced, and as shown in FIG. The tip portion is supplied so as to protrude from the through hole 3a of the die 3 to the front side by a predetermined length L. Thereby, it will be in the first standby state in which the next shaping | molding is possible, and the above-mentioned series of nut shaping | molding operation | movement can be performed repeatedly.

以上のように本発明のパーツ部品の圧造成形方法によれば、長尺の線状素材Ａからボリュームが線径の２倍以上で、中心部に貫通孔Ｎ１を有するナットを簡単な１つ圧造工程でスクラップゼロにて繰り返し成形することができる。  As described above, according to the forging method of parts of the present invention, a simple one nut is formed from a long linear material A whose volume is at least twice the wire diameter and has a through hole N1 in the center. It can be repeatedly formed at zero scrap in the process.

なお、線状素材Ａは棒材であってもよいし、コイル線を延ばしたものであってもよい。線状素材の断面形状としては、円形のものを用いる他、例えば六角や四角等の多角形状やその他の形状であってもよい。その場合、パンチ４側の通孔４ｂ及びセンターピンの６の断面形状を線状素材Ａの断面形状と同一形状とする。さらに、線状素材Ａの鋼種等により温間、熱間状態に加熱したうえで圧造成形するようにしてもよく、このようにすれば、例えば六角ナットや四角ナットは勿論、より複雑な形状のパーツ部品も容易に成形できるのでこのましい。  The linear material A may be a bar material or may be a coil wire that is extended. The cross-sectional shape of the linear material may be a circular shape, or may be a polygonal shape such as a hexagon or a square, or other shapes. In this case, the cross-sectional shape of the through hole 4b on the punch 4 side and the center pin 6 is the same as the cross-sectional shape of the linear material A. Furthermore, it may be formed by forging after being heated in a warm or hot state by the steel material of the linear material A. In this way, for example, hexagon nuts and square nuts as well as more complicated shapes are formed. This is good because parts can be easily molded.

以上の実施の形態ではナットＮを成形する場合について説明したけれども、何らナットＮに限定されるものではなく例えば図５及び図６に示すようにベベルギヤーＢの成形などにも適用することができる。  Although the case where the nut N is formed has been described in the above embodiment, the present invention is not limited to the nut N, and can be applied to the formation of a bevel gear B, for example, as shown in FIGS.

このベベルギヤーＢの成形方法についても基本的には、前述したナットＮを成形する場合と同様の方法よいのであるが、その場合、図５及び図６に示すようにダイ３側にもパンチ４に形成されたベベルギヤー成形用凹部４ｃと対応する位置にベベルギヤー成形用凹部３ｃを形成する一方、成形時にダイ３とパンチ４が開くことがないように挟持する挟持手段７を設けている。この挟持手段７としては、ダイ３とパンチ４の左右両端部に、それぞれ対向するテーパー状鍔部３ｄ，３ｄ，４ｄ，４ｄを設け、これらテーパー状鍔部３ｄ，３ｄ，４ｄ，４ｄを突き合わせた状態で両テーパー状鍔部３ｄ，４ｄに進退可能な左右クランプ体７ａ，７ａの挟持凹部７ｂ，７ｂを嵌り込ませて挟持するようにしたものである。なお、その他の構造については基本的に前述したナットＮを成形する場合と同様であるので符号のみ付しその説明については省略する。  Basically, the bevel gear B can be formed by the same method as that for forming the nut N described above. In this case, however, the punch 4 is formed on the die 3 side as shown in FIGS. A bevel gear molding recess 3c is formed at a position corresponding to the formed bevel gear molding recess 4c, and clamping means 7 is provided for clamping so that the die 3 and the punch 4 do not open during molding. As the clamping means 7, tapered ridges 3d, 3d, 4d, and 4d that are opposed to each other are provided at the left and right ends of the die 3 and the punch 4, and these tapered ridges 3d, 3d, 4d, and 4d are abutted. In this state, the holding recesses 7b and 7b of the left and right clamp bodies 7a and 7a that can be moved forward and backward in both tapered flange portions 3d and 4d are fitted and held. Since the other structure is basically the same as that in the case of forming the nut N described above, only the reference numerals are given and the description thereof is omitted.

上記した挟持手段７を用いて成形時におけるダイ３とパンチ６の開きを積極的に防止することにより、複雑な形状のベベルギヤー（パーツ部品）Ｂであっても高精度に成形することができる。この場合にも、先に述べたように線状素材Ａを温間又は熱間状態に加熱して圧造成形するようにすれば、複雑な形状を呈するベベルギヤーなどのパーツ部品の成形がより簡単容易に行なえるのでこのましい。  Even if the bevel gear (part part) B having a complicated shape can be formed with high accuracy by positively preventing the die 3 and the punch 6 from being opened at the time of forming by using the clamping means 7 described above. Also in this case, as described above, if the linear material A is heated to a warm or hot state and formed by forging, it is easier and easier to form parts such as bevel gears that exhibit complex shapes. This is so good.

本発明に係るパーツ部品の圧造成形方法に用いる圧造成形機の概略説明図である。  It is a schematic explanatory drawing of the forging machine used for the forging forming method of the parts parts which concern on this invention. 同圧造成形機の第１動作説明図である。  It is 1st operation | movement explanatory drawing of the same forging molding machine. 同圧造成形機の第２動作説明図である。  It is 2nd operation | movement explanatory drawing of the same forging molding machine. 同圧造成形機の第３動作説明図である。  It is a 3rd operation explanatory view of the forging machine. 別の実施の形態を示す圧造成形機の概略説明図である。  It is a schematic explanatory drawing of the forging machine which shows another embodiment. 同圧造成形機の動作説明図である。  It is operation | movement explanatory drawing of the same forging machine.

符号の説明Explanation of symbols

１ 圧造成形機
２ 機台
３ ダイ
３ａ 成形凹所
４ パンチ
４ａ 成形凹所
４ｂ 通孔
５ グリップフィード
６ センターピン
Ａ 線状素材
Ｎ ナット（パーツ部品）
Ｎ１ 貫通孔
Ｂ ベベルギヤ（パーツ部品）
Ｂ１ 貫通孔DESCRIPTION OF SYMBOLS 1 Forging machine 2 Machine stand 3 Die 3a Molding recess 4 Punch 4a Molding recess 4b Through-hole 5 Grip feed 6 Center pin A Linear material N Nut (part parts)
N1 Through hole B Bevel gear (parts)
B1 Through hole

Claims (2)

長尺の線状素材からボリュームが線径の２倍以上で、中心部に貫通孔を有するパーツ部品をスクラップゼロにて繰り返し成形するパーツ部品の圧造成形方法であって、まず、パーツ部品を成形する線状素材をダイ側に備えられた進退可能なグリップフィードで掴み、グリップフィードを前進させて線状素材の先端部をダイの貫通孔内からその前方側に所定長さ突出するよう供給し、次いで、その突出状態を保持した状態の基で、成形凹所と成形凹所内に進退可能なセンターピンとを備えたパンチをダイ側に前進させてパンチ前面をダイ前面に密着させ、密着するパンチとダイとにより所望の成形空間を形成し、その後、センターピンを成形凹所内に前進させて、素材の突出部を成形空間の中程まで押し込んでパーツ部品を成形し、然る後、グップフィードを開いて後退させ、センターピンをさらにダイ内に前進させることにより、貫通孔を有するパーツ部品と線状素材とに切り離して成形が完了するようにしたことを特徴とするパーツ部品の圧造成形方法。  This is a method for forging parts to repeatedly form part parts with a through hole in the center from a long linear material with a volume more than twice the diameter of the wire. The linear material to be gripped is gripped by the grip feed that can be moved forward and backward, and the grip feed is advanced so that the tip of the linear material protrudes from the through hole of the die to the front side by a predetermined length. Next, a punch having a molding recess and a center pin that can be advanced and retracted into the molding recess is advanced to the die side, and the punch front is brought into close contact with the die front by keeping the protruding state. And a die to form the desired molding space, and then the center pin is advanced into the molding recess, and the protruding part of the material is pushed to the middle of the molding space to mold the part part. Forging molding of part parts, characterized by opening and closing the feed and moving the center pin further into the die to separate the part parts with through-holes and linear materials to complete the molding. Method. 線状素材の断面形状を六角や四角等の多角形状とし、その鋼種により温間、熱間状態に加熱して圧造成形するようにしたことを特徴とする請求項１に記載のパーツ部品の圧造成形方法。  2. The forging of a part part according to claim 1, wherein the cross-sectional shape of the linear material is a polygonal shape such as a hexagon or a square, and the forging is performed by heating in a warm or hot state with the steel type. Molding method.
JP2008084744A 2008-02-28 2008-02-28 Method for press-forming partial component Pending JP2009202230A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013512109A (en) * 2009-11-30 2013-04-11 ハテブル ウムフオルマシネン アクチエンゲゼルシャフト Method for manufacturing molded part with through hole
CN108655323A (en) * 2017-04-01 2018-10-16 成都豪能科技股份有限公司 A kind of equipment making ring parts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013512109A (en) * 2009-11-30 2013-04-11 ハテブル ウムフオルマシネン アクチエンゲゼルシャフト Method for manufacturing molded part with through hole
US9545660B2 (en) 2009-11-30 2017-01-17 Hatebur Umformmaschinen Ag Method for producing a formed part furnished with a through hole
CN108655323A (en) * 2017-04-01 2018-10-16 成都豪能科技股份有限公司 A kind of equipment making ring parts

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