JPS61262442A - High precision upsetting method - Google Patents

Abstract

PURPOSE:To upset a formed part of high accuracy for dimension by lowering a lower hole fit to a counterpunch with a diameter equal to that of the billet and a die with an upper hole with an equal diameter as that of the formed part along with the punch by means of a killer-ring. CONSTITUTION:A billet 1 is fed to a lower hole 8 fit to a counterpunch 6 with an equal diameter as that of the billet 1 and the a lower hole 8 of a die 7 which is forced upwards by a spring 10 and has an upper hole with the equivalent diameter as that of the formed part 11 continuing thereto, and is placed above the counterpunch 6. Then an upper die 12 is lowered, and the punch 13 with an equal diameter as that of the part 11 fixed on the upper die 12 facing to the counterpunch 6, and a killer ring 14 fixed on the exterior are lowered. As soon as the punch 13 comes in contact with the raw material 1, the killer ring 14 is made contact with the die 7 and forced down. And, the billet 1 is upsetted by being guided by the lower hole 8 of the die 7 and the formed part 11 is obtained.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は棒材をプレス切断した円柱状素材をプレスによ
りすえ込み加工し寸法精度の高い成形品をうるための高
精度すえ込み成形方法に関するものである。Detailed Description of the Invention: "Industrial Application Field" The present invention relates to a high-precision swaging method for swaging a cylindrical material obtained by press-cutting a bar material using a press to obtain a molded product with high dimensional accuracy. It is something.

「従来の技術」 従来、棒材をプレス切断した円柱状素材をす乏込み成形
してすえ込み高さと外径とを成形する成形方法は、第５
図及び第６図に示す２つの成形方法が多用されていた。``Prior art'' Conventionally, a forming method in which a cylindrical material obtained by press-cutting a bar material is subjected to embedding forming to form the swaging height and outer diameter is the fifth method.
Two molding methods shown in Fig. 6 and Fig. 6 were frequently used.

すなわち第５図は、ａ図に示す棒材をプレス切断した円
柱状の素材１をｂ図に示すようにすえ込み加工し、０図
に示ｔ′ようにしごき又は密閉により、外径を成形する
方法である。また第６図は、ａ図に示す素材１をｂ図に
示すようにダイ２上に五き、その外周部に所要の内径寸
法と高さを有し、水平方向にダイ２上を動く７０−ティ
ングダイリング３を設け、パンチ４で０図に示すように
所要の高さにすえ込み加工すると同時に所要の外径寸法
に成形する方法である。In other words, in Fig. 5, a cylindrical material 1 obtained by press-cutting the bar shown in Fig. a is swaged as shown in Fig. B, and the outer diameter is shaped by ironing or sealing as shown in Fig. 0. This is the way to do it. In addition, FIG. 6 shows a material 1 shown in FIG. A placed on a die 2 as shown in FIG. - This is a method in which a ting die ring 3 is provided, and the punch 4 is used to swage the die to the required height as shown in Figure 0, and at the same time form the die to the required outer diameter.

「発明が解決しようとする問題点」 上述の従来の成形法では、素材１がｔＪＳ７図に示゛す
ように、棒材をプレス切断したとき、両端面は角度Ａだ
け傾いて切断され０図では端面に討する垂線で示す）、
また切断するとき切刃の当接した側面部にだれＢを生ず
ることは避けられないことから、第８図に示すように８
図のようにすえ込み加工を行うとき、ｂ図のように素材
１の端面の傾きの方向に長い楕円形に成形される。従っ
て第５図Ｃに示す外径をしごき加工したときも、第６図
Ｃにしめずダイリングを用いてすえ込み加工した場合も
、楕円形の長径方向と定径方向との間に寸法誤差を生じ
高精度のすえ込み成形はできないという欠点があった０
本発明の目的はこれらの欠点な除き、素材の両端面の傾
きを修正しっつす乏込み成形することができ、成形品の
外径とすえ込み高さの寸法精度を向上することのできる
高精度すえ込み成形方法を提供することにある。``Problems to be Solved by the Invention'' In the conventional forming method described above, when the bar material 1 is press-cut as shown in Fig. (indicated by a perpendicular line that crosses the end face),
Also, when cutting, it is unavoidable that a sag B will occur on the side surface where the cutting blade comes into contact, so as shown in Fig.
When the swaging process is performed as shown in the figure, the material 1 is formed into an oval shape that is elongated in the direction of the inclination of the end face, as shown in figure b. Therefore, when ironing the outer diameter shown in Fig. 5C, and when swaging using a Shimezu die ring as shown in Fig. 6C, there will be a dimensional error between the major diameter direction and constant diameter direction of the ellipse. The disadvantage was that high-precision swaging molding was not possible due to
The purpose of the present invention is to eliminate these drawbacks, correct the inclination of both end faces of the material, perform thinning molding, and improve the dimensional accuracy of the outer diameter and swaging height of the molded product. The object of the present invention is to provide a high-precision swaging molding method.

１問題、４を解決するための手段及び作用」本発明のす
え込み成形方法は、下型に固設した素材と等径のカウン
タパンチの外径にその下部穴を適合させ、下型に昇降自
在に設けられたダイの上部に成形品の外径に等径の上部
穴を下部穴と連続させて設け、このダイを上向に付勢し
、かつ上限を規制しておく。Means and operation for solving problems 1 and 4 The swaging forming method of the present invention adapts the lower hole to the outer diameter of the counter punch, which has the same diameter as the material fixed to the lower mold, and lifts and lowers it into the lower mold. An upper hole having the same diameter as the outer diameter of the molded product is provided in the upper part of the die which is freely provided so as to be continuous with the lower hole, and the die is urged upward and the upper limit is regulated.

カウンタパンチの上に載置した素材の外径をダイの下部
穴で保持した状態で、上型に設けた成形品の外径と等径
のパンチを下降させ、パンチがダイの上部穴に適合して
下降し素材上面に当接すると同時に、パンチの外周部に
遊嵌し上型に固設したキラーリングがダイを押し下げる
ようにし、この状態で素材をパンチですえ込み成形する
。このとき素材はダイの下部穴に外径を案内されている
ので、両端面が傾斜していてもダイの中心に保持され、
その上９！Ｉｉ部がらすえ込まれ、パンチとダイの上部
穴との空間を上から順に満たすように成形され、ダイも
共に下降するのでダイの素材を案内する部分が次第に減
少し、最終的に成形品が完成する。従つて素材の両端面
の傾斜及び外周部のだれの成形品に対する影響が残らな
いので寸法精度の高い成形品かえられるのが特長である
。While the outer diameter of the material placed on the counter punch is held in the lower hole of the die, lower the punch with the same diameter as the outer diameter of the molded product provided on the upper mold, and the punch fits into the upper hole of the die. At the same time, the die is pushed down by a killer ring loosely fitted around the outer periphery of the punch and fixed to the upper mold, and in this state the material is swamped and formed by the punch. At this time, the outer diameter of the material is guided by the lower hole of the die, so even if both end faces are inclined, it is held in the center of the die.
On top of that, 9! Part Ii is inserted and the mold is formed so as to fill the space between the punch and the upper hole of the die from above, and the die also descends together, so the part of the die that guides the material gradually decreases, and finally the molded product is formed. Complete. Therefore, the inclination of both end faces of the material and the sagging of the outer periphery do not affect the molded product, so it is advantageous that the molded product can be replaced with high dimensional accuracy.

「実施例」 第１図において、下型５に円柱状のカウンタパンチ６が
立設されている０円筒状のダイ７は中心に下部穴８と上
部穴９とが同心に連続して設けられ、下部穴８がカウン
タパンチ６の外径に昇降自在に適合している。ダイ７は
下型５に外周を昇降自在に案内され、かつ上限が規制さ
れている。下型５とダイ７の下面との間には複数のばね
１０を設け、ダイ７を上向に付勢している。ダイ７の上
部穴９の内径はすえ込み成形する成形品１１の外径寸法
を基準として決定される。``Example'' In FIG. 1, a cylindrical die 7 has a cylindrical counter punch 6 erected on a lower die 5, and a lower hole 8 and an upper hole 9 are continuously provided concentrically at the center. , the lower hole 8 is adapted to the outer diameter of the counter punch 6 so as to be movable up and down. The die 7 is guided by the lower mold 5 so as to be able to move up and down on its outer periphery, and its upper limit is regulated. A plurality of springs 10 are provided between the lower die 5 and the lower surface of the die 7 to urge the die 7 upward. The inner diameter of the upper hole 9 of the die 7 is determined based on the outer diameter dimension of the molded product 11 to be swage-molded.

上型１２には下型５のカウンタパンチ６と同心に対向す
るパンチ１３が固設され、パンチ１３の外周部には同心
にキラーリング１４が上型１２に固設されている。パン
チ１３はキラーリング１４より下に突出している。突出
量は下型５のカッシタパンチ６上に載り、ダイ７の下部
穴８に外周を案内された素材１の上面に、下降してきた
バンチ１３の下面が当接するとぎ、キラーリング１４の
下面が丁度上限にあるダイ７の上面に当接する位ｇｉｒ
ｍ係となるようにしている。A punch 13 is fixed to the upper mold 12 and coaxially opposed to the counter punch 6 of the lower mold 5, and a killer ring 14 is fixed to the upper mold 12 concentrically around the outer periphery of the punch 13. The punch 13 protrudes below the killer ring 14. The amount of protrusion is such that the lower surface of the descending bunch 13 comes into contact with the upper surface of the material 1 placed on the cassita punch 6 of the lower die 5 and whose outer periphery is guided through the lower hole 8 of the die 7, and the lower surface of the killer ring 14 is exactly gir to the point where it touches the top surface of die 7 at the upper limit.
I try to be in charge of M.

次に作ｍについてのべる。第１図に乃至第４図において
、第１図左側に示すように上型１２が上昇している開に
下型５のだい７の下部穴８内に供給された素材１はカウ
ンタパンチ６の上面に載る。Next, I will talk about the work. In FIGS. 1 to 4, when the upper mold 12 is raised as shown on the left side of FIG. placed on the top.

上型１２が下降し、パンチ１３の下面が素材１の上面に
当接するとき、第２図に示すようにキラーリング１４の
下面もダイアの上面に当接する。ここから上型１２が下
降するに伴いパンチ１３、キラーリング１４と共にダイ
７が下降し、゛素材１は第３図に示すように上ｉ部から
順にすえ込まれ、ダイ７の上部穴９に沿って成形部分１
５が完成してゆく、このと軽業材１の下部はダイ７の下
部穴８に同心に保持されているので、素材１の上下の両
端面の傾斜の影響が除かれですえ込まれてゆく。When the upper mold 12 is lowered and the lower surface of the punch 13 contacts the upper surface of the material 1, the lower surface of the killer ring 14 also contacts the upper surface of the diamond, as shown in FIG. From here, as the upper die 12 descends, the die 7 descends together with the punch 13 and the killer ring 14, and the material 1 is swaged in order from the upper i part as shown in FIG. Molding part 1 along
5 is completed, and since the lower part of the acrobatic material 1 is held concentrically with the lower hole 8 of the die 7, the influence of the slope of both the upper and lower end surfaces of the material 1 is removed and it is swamped. .

また成形部分１５は下降するパンチ１３、ダイ７と共に
下降してゆくので、ダイ７との間に摩擦力が作用しない
、従ってすえ込み加工によりダイ７をキラーリング１４
で押し下げる以上に押し下げる力は作用しないのでばね
１０はダイ７を上限に付勢するだけの強さで十分である
。パンチ１３の下降限で第１図右側に示すように成形品
１１が完成する。In addition, since the molded part 15 descends together with the punch 13 and die 7, no frictional force acts between it and the die 7.
Since no further force is applied to push down the die 7, the strength of the spring 10 is sufficient to bias the die 7 to its upper limit. At the lower limit of the punch 13, the molded product 11 is completed as shown on the right side of FIG.

なお、素材１が所要の長さ以上の長さであった場合は、
パンチ１３が先に素材１に当接しすえ込みを開始してか
らキラーリング１４がダイ７に当接し以下上述と同様の
すえ込み過程をたどり、パンチ１３の下限若干前から素
材１の余分の容量のはみ出しによりダイ７がばね１０の
付勢力に打ち勝りで下降し第４図に示す状態となってパ
ンチ１３が下限に達し成形を終わる。ダイ７は成形品１
１のはみ出し部１６により余分に下降した高さだけキラ
ーリング１４から離れ、またダイ７の逃げにより金型が
破損することはない。In addition, if material 1 is longer than the required length,
The punch 13 first contacts the material 1 and starts swaging, then the killer ring 14 contacts the die 7, and the same swaging process as described above is followed, and the excess capacity of the material 1 is increased slightly before the lower limit of the punch 13. As a result of the protrusion, the die 7 overcomes the biasing force of the spring 10 and descends to the state shown in FIG. 4, where the punch 13 reaches its lower limit and the molding ends. Die 7 is molded product 1
1 is separated from the killer ring 14 by the extra lowered height, and the mold is not damaged due to escape of the die 7.

「発明の効果」 以上の説明から明らかなように本発明によれば、カウン
タパンチに適合する下部穴を有するダイをキラーリング
によりパンチと共に下降させて素材をすえ込み、素材の
外径なダイの下部穴で案内しながらすえ込み加工を杼う
ので、素材の両端面に傾斜があり、外周部にだれがあっ
ても素材の中心が偏心することなくすえ込まれるので、
成形品の寸法精度を高（することができ、成形品の歩留
も向上できるなど、笑泪上の効果と利息は大きい。``Effects of the Invention'' As is clear from the above description, according to the present invention, a die having a lower hole that fits the counter punch is lowered together with the punch by a killer ring to swamp the material, and the die is shaped like the outer diameter of the material. Since the swaging process is carried out while being guided by the lower hole, both end faces of the material are sloped, and even if there is something on the outer periphery, the center of the material will be swaged without eccentricity.
The dimensional accuracy of molded products can be increased, and the yield of molded products can also be improved, which has great benefits and benefits.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明に用いる金型要部の縦断面図、第２図、
第３図及Ｖ１＠４図はその作用説明図、第５図乃至第８
図は従来例の説明図である。 １は素材、２はダイ、３は７０−ティングダイリング、
４はパンチ、５は下型、６はカウンタバンチ、７はダイ
、８は下部穴、９は上部穴、１０はばね、１１は成形品
、１２は上型、１３はパンチ、１４はキラーリング、１
５は成形部分、１６ははみ呂し部 である。 特許出願人　　アイグエンジニアリング株式会社代表者
　　　　会　１）啓之助 第７図　　　第８図Fig. 1 is a longitudinal sectional view of the main parts of the mold used in the present invention, Fig. 2 is
Figures 3 and V1@4 are explanatory diagrams of their functions, and Figures 5 to 8
The figure is an explanatory diagram of a conventional example. 1 is the material, 2 is the die, 3 is the 70-ting die ring,
4 is a punch, 5 is a lower mold, 6 is a counter bunch, 7 is a die, 8 is a lower hole, 9 is an upper hole, 10 is a spring, 11 is a molded product, 12 is an upper mold, 13 is a punch, 14 is a killer ring ,1
5 is a molded part, and 16 is a filler part. Patent Applicant Aig Engineering Co., Ltd. Representative Meeting 1) Keinosuke Figure 7 Figure 8

Claims (1)

【特許請求の範囲】[Claims] 円柱状の素材のすえ込み成形において、下型に立設した
素材と等径のカウンタパンチに昇降自在に適合する下部
穴と、これと連続する成形品と等径の上部穴を有し、上
向に付勢されたダイの下部穴に素材を供給し、上型に前
記カウンタパンチと対向して固設した成形品と等径のパ
ンチと、パンチの外周部に固設したキラーリングとを下
降させ、前記パンチが前記素材に当接すると同時に前記
キラーリングを前記ダイに当接させて押し下げ、前記素
材を前記ダイの下部穴で案内しつつすえ込み成形するこ
とを特徴とする高精度すえ込み成形方法。In swaging molding of cylindrical materials, the lower mold has a lower hole that can be raised and lowered to fit a counter punch with the same diameter as the material and a continuous upper hole with the same diameter as the molded product. The material is supplied to the lower hole of the die which is biased in the direction, and a punch of the same diameter as the molded product is fixed to the upper die facing the counter punch, and a killer ring is fixed to the outer periphery of the punch. the punch is brought into contact with the material, the killer ring is brought into contact with the die and pushed down, and the material is swaged and formed while being guided by a lower hole of the die. Inclusive molding method.