JP3012224U - Forging and forging dies - Google Patents
Forging and forging diesInfo
- Publication number
- JP3012224U JP3012224U JP1994015152U JP1515294U JP3012224U JP 3012224 U JP3012224 U JP 3012224U JP 1994015152 U JP1994015152 U JP 1994015152U JP 1515294 U JP1515294 U JP 1515294U JP 3012224 U JP3012224 U JP 3012224U
- Authority
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- Japan
- Prior art keywords
- nib
- die
- forging
- fitting
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
(57)【要約】
【目的】 補強ケースに圧入する型部材に大なる与圧を
付与してダイスの寿命延長を画る。
【構成】 先端面に型部材収容孔22を開設した補強ケー
ス２の該型部材収容孔22に型部材３を圧入或いは焼嵌め
して嵌着した鍛造・圧造用ダイスにおいて、型部材３は
型孔30を有するニブ31をスリーブ32に圧入或いは焼嵌め
して形成され、スリーブ32の先端面には、ニブ31との嵌
合面に接近してポンチ等の叩き具による打込み痕４が形
成されている。打込み痕４近傍のスリーブ32の内壁面に
は内側に弾性変形する力が作用して、ニブ31を締め付
け、先に減じてしまったニブ31に対する締付け力を補
い、即ち、ニブ31に対する与圧を低減させることはな
く、ダイスの寿命を延長できる。
(57) [Summary] [Purpose] To extend the life of the die by applying a large amount of pressure to the die member that is press-fitted into the reinforcing case. [Structure] In a die for forging / pressing, in which a die member 3 is press-fitted or shrink-fitted into the die member accommodation hole 22 of a reinforcing case 2 having a die member accommodation hole 22 formed in a front end surface, the die member 3 is a die. It is formed by press-fitting or shrink-fitting a nib 31 having a hole 30 into a sleeve 32, and a driving mark 4 by a hitting tool such as a punch is formed on a tip end surface of the sleeve 32 so as to approach a fitting surface with the nib 31. ing. The inner wall surface of the sleeve 32 near the driving mark 4 is elastically deformed inward, tightening the nib 31, and compensating for the tightening force on the nib 31 that has been reduced, that is, applying the pressure to the nib 31. The die life can be extended without any reduction.
Description
【０００１】[0001]
本考案は、ボルト、ナット、自動車用部品等、各種産業用機械部品を鍛造・圧 造成形するために使用するダイスに関するものである。 The present invention relates to a die used for forging and press forming various industrial machine parts such as bolts, nuts and automobile parts.
【０００２】[0002]
従来の斯種ダイスは、先端面に型部材収容孔を開設した補強ケースの該型部材 収容孔にに型部材を圧入又は焼嵌めして形成されている。 ダイスの寿命は、鍛造・圧造の加圧が繰り返して作用するときの弾性変形に大 きい影響を受けるから、鍛造・圧造時の加圧に耐える様に、型部材を補強ケース の型部材収容孔へ締まり嵌め状態に圧入して、高い予圧を加え、鍛造・圧造時の 大なる加圧を打ち消してダイス寿命の延長を画るのである。 但し、型部材に対する締付け力は、型孔の変形によってある程度逃げて締代が 小さくなることは避けられない。 A conventional die of this type is formed by press-fitting or shrink-fitting a die member into the die member accommodating hole of a reinforcing case having a die member accommodating hole formed in the front end surface thereof. The life of the die is greatly affected by elastic deformation when the pressurization of forging / pressing is repeatedly applied.Therefore, in order to withstand the pressurizing force of forging / pressing, the mold member should have a die member receiving hole of the reinforcing case. By press-fitting in a tight fitting state, applying a high preload, and canceling out the large pressure during forging and forging, the life of the die is extended. However, it is unavoidable that the tightening force on the mold member will escape to some extent due to the deformation of the mold cavity and the tightening margin will be reduced.
【０００３】 近年、製品コストの引き下げ、製品の強度向上等の目的により、鍛造・圧造に よって部品を製造することが試みられ、このため、型部材の型孔形状も多様化し 、例えば、図３に示す如く、型部材(３)の軸心に直交する方向に長い長孔状の型 孔(30)も出現している。In recent years, it has been attempted to manufacture parts by forging and forging for the purpose of reducing product cost, improving product strength, etc. Therefore, the mold hole shape of the mold member is diversified, for example, as shown in FIG. As shown in Fig. 3, a long hole-shaped mold hole (30) long in the direction orthogonal to the axis of the mold member (3) has also appeared.
【０００４】[0004]
この場合、該型部材(３)を図４に示す如く型部材(３)の型部材収容孔(22)に圧 入或いは焼嵌めして、型部材(３)の全周に均一な締代を付与すれば、型孔(３)の 長辺側の応力開放が短辺側の応力開放よりも大きくなって、長辺側が内側に逃げ て膨れ、これによって、型部材(３)に対する締代が全体に小さくなることは勿論 のこと、型孔(３)の長辺に対応する型部材(３)の外周部と短辺に対するそれとで は、締代に不均一が生じて、型部材(３)に効果的に与圧を加えることが出来なか った。 本考案は、型部材の型孔形状の影響を可及的に小さくして、型部材に大なる予 圧を与えて型部材の寿命延長を画ることのできるダイスを明らかにするものであ る。 In this case, the mold member (3) is press-fitted or shrink-fitted into the mold member accommodating hole (22) of the mold member (3) as shown in FIG. The stress release on the long side of the mold hole (3) becomes larger than that on the short side, and the long side escapes to the inside and swells. Of course, the outer circumference of the mold member (3) corresponding to the long side of the mold hole (3) and that for the short side of the mold hole (3) become uneven in the interference and the mold member ( It was not possible to apply pressure to 3) effectively. The present invention clarifies a die that can minimize the influence of the die hole shape of the die member and give a large preload to the die member to extend the life of the die member. It
【０００５】[0005]
本考案のダイスは、先端面に型部材収容孔(22)を開設した補強ケース(２)の該 型部材収容孔(22)に型部材(３)を圧入或いは焼嵌めして嵌着した鍛造・圧造用ダ イスにおいて、型部材(３)は型孔(30)を有するニブ(31)をスリーブ(32)に圧入或 いは焼嵌めして形成され、スリーブ(32)の先端面には、ニブ(31)との嵌合面に接 近してポンチ等の叩き具による打込み痕(４)が形成され、この時のスリーブ(32) の塑性変形により、ニブ(31)の締付け力を増強している。 必要に応じて、ニブ(31)とスリーブ(32)と互いの嵌合面の内、少なくとも一方 の面にＴｉＣ、ＴｉＣＮ、ＴｉＮ等の耐焼付性の表面改質層(７)を形成してもよ い。 The die of the present invention is a forging in which the die member (3) is press-fitted or shrink-fitted into the die member accommodation hole (22) of the reinforcing case (2) having the die member accommodation hole (22) formed in the tip surface. In the die for press forming, the die member (3) is formed by press-fitting or shrink-fitting the nib (31) having the die hole (30) into the sleeve (32), and the tip surface of the sleeve (32) is , A hitting mark (4) by a hitting tool such as a punch is formed close to the mating surface with the nib (31), and the plastic deformation of the sleeve (32) at this time reduces the tightening force of the nib (31). It is increasing. If necessary, a seizure-resistant surface modification layer (7) such as TiC, TiCN, or TiN is formed on at least one of the fitting surfaces of the nib (31) and the sleeve (32). Good.
【０００６】[0006]
ダイスは、補強ケース(２)に圧入或いは焼嵌めにより型部材(３)を嵌着する際 に、型部材(３)の外周面に作用する締代によって型孔(30)の壁面が内側に逃げる ため、型部材(３)に対する締付け力は低下する。 しかし、型部材(３)を補強ケース(２)に嵌着した後、型部材(３)のスリーブ(3 2)の先端面に、ニブ(31)との嵌合面に接近してポンチ等の叩き具にて打込み痕( ４)を形成することにより、該打込み痕(４)近傍のスリーブ(32)の内壁面には内 側に弾性変形する力が作用して、ニブ(31)を強力に締め付け、先に減じてしまっ たニブ(31)に対する締付け力を補い、即ち、ニブ(31)に対する与圧を低減させる ことはなく、ダイスの寿命を延長できる。 When the die member (3) is fitted into the reinforced case (2) by press fitting or shrink fitting, the wall surface of the die hole (30) is moved to the inner side due to the interference acting on the outer peripheral surface of the die member (3). Since it escapes, the tightening force on the mold member (3) is reduced. However, after the mold member (3) is fitted into the reinforcing case (2), the punch member or the like approaches the fitting surface with the nib (31) at the tip end surface of the sleeve (32) of the mold member (3). By forming the driving mark (4) with the hitting tool, the inner wall surface of the sleeve (32) in the vicinity of the driving mark (4) is elastically deformed inward, so that the nib (31) is removed. The die can be extended strongly without compensating the tightening force for the nib (31), which has been reduced earlier, that is, for reducing the pressure applied to the nib (31).
【０００７】 更に、スリーブ(32)の先端面に、ニブ(31)との嵌合面に接近してポンチ等の叩 き具にて打込み痕(４)を形成することにより、ニブ(31)に対するかしめ効果が生 じ、スリーブ(32)からのニブ(31)の一層確実な抜止めを画ることができる。 ニブ(31)とスリーブ(32)と互いの嵌合面の内、少なくとも一方の面にはＴｉＣ 、ＴｉＣＮ、ＴｉＮ等の耐焼付性の表面改質層(７)を形成することにより、ニブ (31)の圧入代を大きくしても焼付きは起こらないため、ニブ(31)に対する与圧を 大きくできる。 型孔(30)の変形に対しては、従来と同様にしてダイス組立後、正規寸法に仕上 げる或いは、予め変形分を見込んで加工しておけば可い。Further, the nib (31) is formed by forming a driving mark (4) on the tip end surface of the sleeve (32) in the vicinity of the fitting surface with the nib (31) with a punching tool such as a punch. As a result, the nib (31) can be more reliably prevented from coming off the sleeve (32). By forming a seizure resistant surface modification layer (7) such as TiC, TiCN, or TiN on at least one of the fitting surfaces of the nib (31) and the sleeve (32), the nib ( Even if the press-fitting margin of 31) is increased, seizure does not occur, so the pressure applied to the nib (31) can be increased. As for the deformation of the mold cavity (30), it is possible to finish the die in the same manner as in the conventional method and then finish it to a regular size, or to machine it in advance in consideration of the deformation.
【０００８】 以下の第１実施例と第２実施例について説明する。The following first and second embodiments will be described.
【第１実施例(図１、図２)】 外周が円筒状の補強ケース(２)の前面中央に型部材収容孔(22)を開設し、補強 ケース(２)の軸心を貫通して突出しピンスライド孔(21)が開設されている。 補強ケース(２)は、引張り強度が大なる焼入れ鋼にて形成されている。[First embodiment (FIGS. 1 and 2)] A mold member accommodating hole (22) is opened in the center of the front surface of a reinforcing case (2) having a cylindrical outer periphery, and the axial center of the reinforcing case (2) is penetrated. A protruding pin slide hole (21) is provided. The reinforcing case (2) is made of hardened steel having high tensile strength.
【０００９】 型部材収容孔(22)に圧入又は焼嵌めされる型部材(３)は、超硬合金にて形成さ れたニブ(31)を特殊鋼にて形成したスリーブ(32)に圧入或いは焼嵌めして形成さ れる。 ニブ(31)の中央には軸心と直交する方向に長い長孔状の型孔(30)が形成され、 該型孔(30)は前記突出しピンスライド孔(21)に連通している。The mold member (3) press-fitted or shrink-fitted into the mold member accommodation hole (22) is press-fitted into a sleeve (32) made of special steel from a nib (31) made of cemented carbide. Alternatively, it is formed by shrink fitting. A long hole-shaped mold hole (30) is formed in the center of the nib (31) in a direction orthogonal to the axis, and the mold hole (30) communicates with the protruding pin slide hole (21).
【００１０】 ニブ(31)とスリーブ(32)の互いの嵌合面の内、少なくとも一方の面にはＴｉＣ 、ＴｉＣＮ、ＴｉＮ等の耐焼付性の表面改質層(７)(太線で誇張して示す)が形成 されている。 表面改質層(７)は、化学蒸着(ＣＶＤ)によるＴｉＣ又はＴｉＣＮの層或いは物 理蒸着(ＰＶＤ)によるＴｉＮの層であり、この表面改質層(７)は金属組織中に浸 透して一部結合しており、その厚さは、５〜１０μｍである。 スリーブ(32)の先端面には、ニブ(31)との嵌合面に接近してポンチ等の叩き具 による打込み痕(４)が形成されている。Of the mating surfaces of the nib (31) and the sleeve (32), at least one of the mating surfaces has a seizure-resistant surface modification layer (7) such as TiC, TiCN, or TiN (exaggerated with a bold line). Are shown) are formed. The surface modification layer (7) is a TiC or TiCN layer formed by chemical vapor deposition (CVD) or a TiN layer formed by physical vapor deposition (PVD). The surface modification layer (7) penetrates into the metal structure. Are partially bonded, and the thickness thereof is 5 to 10 μm. On the tip end surface of the sleeve (32), a driving mark (4) by a hitting tool such as a punch is formed close to the fitting surface with the nib (31).
【００１１】 然して、ダイスは、補強ケース(２)に圧入或いは焼嵌めにより型部材(３)を嵌 着する際に、型部材(３)の外周面に作用する締代によって型孔(30)の壁面が内側 に逃げるため、型部材(３)に対する締付け力は低下する。 しかし、型部材(３)を補強ケース(２)に嵌着した後、型部材(３)のスリーブ(3 2)の先端面に、ニブ(31)との嵌合面に接近してポンチ等の叩き具にて打込み痕( ４)を形成することにより、該打込み痕(４)近傍のスリーブ(32)の内壁面には内 側に弾性変形する力が作用して、ニブ(31)を強力に締め付け、先に減じてしまっ たニブ(31)に対する締付け力を補い、即ち、ニブ(31)に対する与圧を低減させる ことはなく、ダイスの寿命を延長できる。However, when the die member (3) is fitted into the reinforcing case (2) by press fitting or shrink fitting, the die has a die hole (30) due to the interference acting on the outer peripheral surface of the die member (3). Since the wall surface of the mold escapes inward, the tightening force on the mold member (3) decreases. However, after the mold member (3) is fitted into the reinforcing case (2), the punch member or the like approaches the fitting surface with the nib (31) at the tip end surface of the sleeve (32) of the mold member (3). By forming the driving mark (4) with the hitting tool, a force that elastically deforms inward acts on the inner wall surface of the sleeve (32) near the driving mark (4), and the nib (31) is removed. The die can be extended strongly without compensating the tightening force for the nib (31) that has been reduced earlier, that is, without reducing the pressure applied to the nib (31).
【００１２】 ニブ(31)の外周面或いはスリーブ(32)の内周面の内、少なくとも一方の面には ＴｉＣ、ＴｉＣＮ、ＴｉＮ等の耐焼付性の表面改質層(７)を形成することにより 、ニブ(31)の圧入代を大きくしても焼付きは起こらないため、ニブ(31)に対する 与圧を大きくできる。 型孔(30)の変形に対しては、従来と同様にしてダイス組立後、正規寸法に仕上 げる或いは、予め変形分を見込んで加工しておけば可い。Forming a seizure resistant surface modification layer (7) such as TiC, TiCN, or TiN on at least one of the outer peripheral surface of the nib (31) or the inner peripheral surface of the sleeve (32). As a result, even if the press-fitting margin of the nib (31) is increased, seizure does not occur, so that the pressure applied to the nib (31) can be increased. As for the deformation of the mold cavity (30), it is possible to finish the die in the same manner as in the conventional method and then finish it to a regular size, or to machine it in advance in consideration of the deformation.
【００１３】[0013]
【第２実施例(図５)】 型部材(３)は、スリーブ(32)に円筒状ニブ(31)を圧入或いは焼嵌めして形成さ れている。 ニブ(31)は軸心に正六角形の型孔(30)を有している。Second Embodiment (FIG. 5) The mold member (3) is formed by press-fitting or shrink-fitting the cylindrical nib (31) into the sleeve (32). The nib (31) has a regular hexagonal die hole (30) at the axial center.
【００１４】 前記第１実施例と同様にして、型部材(３)を補強ケース(２)に圧入又焼嵌めし て嵌着した後、スリーブ(32)の先端面に、ニブ(31)との嵌合面に接近し、且つ型 孔(30)の各辺との対応位置に、ポンチ等の叩き具にて打込み痕(４)を形成してい る。前記同様にして該打込み痕(４)近傍のスリーブ(32)の内壁面には内側に弾性 変形する力が作用して、ニブ(31)を強力に締め付け、先に減じてしまったニブ(3 1)に対する締付け力を補い、即ち、ニブ(31)に対する与圧を低減させることはな く、ダイスの寿命を延長できる。Similar to the first embodiment, after the mold member (3) is press-fitted or shrink-fitted into the reinforcing case (2) and fitted, the nib (31) and the nib (31) are attached to the tip end surface of the sleeve (32). A driving mark (4) is formed by a punching tool such as a punch at a position close to the mating surface of the mold and at a position corresponding to each side of the mold hole (30). In the same manner as described above, the inner wall surface of the sleeve (32) near the driving mark (4) is elastically deformed inwardly to strongly tighten the nib (31) and reduce it first. The tightening force for 1) is not compensated, that is, the pressure applied to the nib (31) is not reduced, and the life of the die can be extended.
【００１５】 本考案は上記実施例の構成に限定されることはなく、実用新案登録請求の範囲 で種々の変形が可能である。The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the utility model registration claim.
【図１】第１実施例のダイスの平面図である。FIG. 1 is a plan view of a die according to a first embodiment.
【図２】同上の縦断面図である。FIG. 2 is a vertical sectional view of the above.
【図３】型部材の斜面図である。FIG. 3 is a perspective view of a mold member.
【図４】型孔の変形を誇張した説明図である。FIG. 4 is an explanatory view exaggerating the deformation of the mold cavity.
【図５】第２実施例のダイスの平面図である。FIG. 5 is a plan view of a die according to a second embodiment.
(２) 補強ケース (22) 型部材収容孔 (３) 型部材 (４) 打込み痕 (2) Reinforcement case (22) Mold member accommodating hole (3) Mold member (4) Imprint mark
Claims (2)
強ケース(２)の該型部材収容孔(22)に型部材(３)を圧入
或いは焼嵌めして嵌着した鍛造・圧造用ダイスにおい
て、型部材(３)は型孔(30)を有するニブ(31)をスリーブ
(32)に圧入或いは焼嵌めして形成され、スリーブ(32)の
先端面には、ニブ(31)との嵌合面に接近してポンチ等の
叩き具による打込み痕(４)が形成され、この時のスリー
ブ(32)の塑性変形により、ニブ(31)の締付け力を増強し
ている鍛造・圧造用ダイス。1. A forging in which a die member (3) is press-fitted or shrink-fitted into the die member accommodating hole (22) of a reinforcing case (2) having a die member accommodating hole (22) formed at a front end surface thereof. In the forging die, the mold member (3) sleeves a nib (31) having a mold hole (30).
It is formed by press-fitting or shrink-fitting into (32), and at the tip end surface of the sleeve (32), a driving mark (4) by a hitting tool such as a punch is formed close to the fitting surface with the nib (31). , Forging and forging dies that increase the tightening force of the nib (31) by plastic deformation of the sleeve (32) at this time.
強ケース(２)の該型部材収容孔(22)に型部材(３)を圧入
或いは焼嵌めして嵌着した鍛造・圧造用ダイスにおい
て、型部材(３)は型孔(30)を有するニブ(31)をスリーブ
(32)に圧入して形成され、ニブ(31)とスリーブ(32)と互
いの嵌合面の内、少なくとも一方の面にはＴｉＣ、Ｔｉ
ＣＮ、ＴｉＮ等の耐焼付性の表面改質層(７)が形成さ
れ、スリーブ(32)の先端面には、ニブ(31)との嵌合面に
接近してポンチ等の叩き具による打込み痕(４)が形成さ
れ、この時のスリーブ(32)の塑性変形により、ニブ(31)
の締付け力を増強している鍛造・圧造用ダイス。2. A forging in which a die member (3) is press-fitted or shrink-fitted into the die member accommodating hole (22) of a reinforcing case (2) having a die member accommodating hole (22) formed at a front end surface thereof. In the forging die, the mold member (3) sleeves a nib (31) having a mold hole (30).
It is formed by press-fitting into the (32) and at least one of the fitting surfaces of the nib (31) and the sleeve (32) is TiC, Ti.
A seizure-resistant surface modification layer (7) such as CN, TiN, etc. is formed, and the tip surface of the sleeve (32) approaches the mating surface with the nib (31) and is driven by a hammer such as a punch. A scar (4) is formed, and due to the plastic deformation of the sleeve (32) at this time, the nib (31) is formed.
Forging and forging dies with increased tightening force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1994015152U JP3012224U (en) | 1994-12-08 | 1994-12-08 | Forging and forging dies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1994015152U JP3012224U (en) | 1994-12-08 | 1994-12-08 | Forging and forging dies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3012224U true JP3012224U (en) | 1995-06-13 |
Family
ID=43147934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1994015152U Expired - Lifetime JP3012224U (en) | 1994-12-08 | 1994-12-08 | Forging and forging dies |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3012224U (en) |
-
1994
- 1994-12-08 JP JP1994015152U patent/JP3012224U/en not_active Expired - Lifetime
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