JP2020006422A - Impact molding method, and impact molded article manufactured thereby - Google Patents

Impact molding method, and impact molded article manufactured thereby Download PDF

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JP2020006422A
JP2020006422A JP2018131282A JP2018131282A JP2020006422A JP 2020006422 A JP2020006422 A JP 2020006422A JP 2018131282 A JP2018131282 A JP 2018131282A JP 2018131282 A JP2018131282 A JP 2018131282A JP 2020006422 A JP2020006422 A JP 2020006422A
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impact
slag
molding method
punch
molded product
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JP7098235B2 (en
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祐輔 松下
Yusuke Matsushita
祐輔 松下
寛記 安藤
Hiroki Ando
寛記 安藤
一晃 岩田
Kazuaki Iwata
一晃 岩田
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Nissin Kogyo Co Ltd
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Nissin Kogyo Co Ltd
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Abstract

To provide an impact molding method exerting high processing accuracy in molding an impact molded article having a bottomed cylindrical shape by coating processing oil on slag.SOLUTION: Provided is an impact molding method in which slag 2 coated with processing oil is disposed in a mold tool 3, and impact is applied to the slag 2 by a punch 31 to cause metal flow so that an impact molded article 1 having a bottomed cylindrical shape is molded. In the mold tool 3, a concavity 3a is formed having an inner surface of a shape corresponding to the outer face of the impact molded article 1. The punch 31 has an end surface 31a and side surfaces of a shape corresponding to the inner face of the impact molded article 1. In the slag 2, a protrusion 21 is formed at an inner side of a peripheral edge adjacent planar part 22 on a first surface to be brought into contact with the end surface 31a of the punch 31.SELECTED DRAWING: Figure 4A

Description

本発明は、有底筒形状のインパクト成形品を成形するインパクト成形方法及びそれにより製造されるインパクト成形品に関する。   The present invention relates to an impact molding method for molding an impact molded article having a bottomed cylindrical shape, and an impact molded article produced by the method.

従来より、プレス加工方法の一つとしてインパクト成形方法が知られている。インパクト成形方法は、スラグと呼ばれる平板状の金属材料のものを金型に配置し、パンチでスラグに衝撃を与えることにより、スラグが押し潰されて所定の形状のインパクト成形品に成形されるものである。スラグには、通常、成形時の焼き付きを防止するために加工油や潤滑剤などが塗布される。インパクト成形方法は、各種の形状の成形に用いられており、その形状に応じた様々な改良が提案されている。   Conventionally, an impact molding method is known as one of the press working methods. The impact molding method is a method in which a flat metal material called slag is placed in a mold, and the slag is crushed by applying an impact to the slag with a punch to form an impact molded product having a predetermined shape. It is. The slag is usually coated with a processing oil, a lubricant, or the like to prevent seizure during molding. The impact molding method is used for molding various shapes, and various improvements according to the shapes have been proposed.

例えば、特許文献１には、有底筒形状のインパクト成形品を成形するインパクト成形方法であって、スラグの下面中央に平底突起部を設けてスラグ下面に段部を形成しその段部と金型（型材）との間の一定容量の空間部分にグリース状の潤滑剤を保有させることで、その潤滑剤が適量となるようにするインパクト成形方法が開示されている。特許文献２には、金属チューブ状容器を成形するインパクト成形方法であって、その口部及び閉鎖膜近傍に亀裂や表面欠陥が発生しないように、スラグを、中心部とその周りに設けられた環状の外周部とから形成し、外周部の肉厚が外周部の端部から半径方向内側に向かって連続して徐々に厚くなるようにしたインパクト成形方法が開示されている。   For example, Patent Literature 1 discloses an impact molding method for molding an impact molded article having a bottomed cylindrical shape, in which a flat bottom projection is provided at the center of the lower surface of the slag, a step is formed on the lower surface of the slag, and the step and the metal are formed. An impact molding method is disclosed in which a grease-like lubricant is held in a space portion having a fixed capacity between a mold (mold material) and an appropriate amount of the lubricant. Patent Literature 2 discloses an impact molding method for molding a metal tubular container, in which a slag is provided at a center portion and around the center portion so that cracks and surface defects do not occur at the mouth and near the closing film. An impact molding method is disclosed in which an outer peripheral portion is formed from an annular outer peripheral portion, and the thickness of the outer peripheral portion is gradually increased from an end of the outer peripheral portion toward the inside in the radial direction.

実開昭５０−１９９４７号公報Japanese Utility Model Publication No. 50-19947 特開２０１６−７８１２０号公報JP-A-2006-78120

しかし、スラグに加工油を塗布して有底筒形状のインパクト成形品を成形する場合、インパクト成形品の底部の内面の周縁に溜まった加工油により、図６に示すように、加工精度が損なわれ易い。なお、図６に示す符号１０１ａ、１０１ｂはそれぞれ、インパクト成形品の底部、筒形状側部を示している。   However, when a processing oil is applied to the slag to form an impact molded product having a bottomed cylindrical shape, the processing oil accumulated on the inner periphery of the bottom inner surface of the impact molded product impairs the processing accuracy as shown in FIG. Easily. Reference numerals 101a and 101b shown in FIG. 6 indicate a bottom portion and a cylindrical side portion of the impact molded product, respectively.

本発明は、係る事由に鑑みてなされたものであり、その目的は、スラグに加工油を塗布して有底筒形状のインパクト成形品を成形する場合に、加工精度が高いものとすることができるインパクト成形方法及びそれを用いて製造されるインパクト成形品を提供することである。   The present invention has been made in view of the above circumstances, and an object of the present invention is to apply a processing oil to slag to form an impact molded product having a cylindrical shape with a bottom, and to have high processing accuracy. An object of the present invention is to provide an impact molding method that can be used and an impact molded product manufactured using the same.

上記目的を達成するために、請求項１に記載のインパクト成形方法は、加工油が塗布されたスラグを金型に配置し、パンチにより該スラグに衝撃を与えて金属流動させることにより有底筒形状のインパクト成形品を成形するインパクト成形方法において、前記金型は、前記インパクト成形品の外面に対応する形状の内面を有する凹部が設けられており、前記パンチは、前記インパクト成形品の内面に対応する形状の端面及び側面を有しており、前記スラグは、前記パンチの端面が接する第１面において周縁近傍平坦部の内側に突起部が形成されていることを特徴とする。   In order to achieve the above object, the impact molding method according to claim 1, wherein a slag coated with a processing oil is placed in a mold, and the slag is impacted by a punch to cause the metal to flow, thereby causing the bottomed cylinder to flow. In the impact molding method for molding an impact molded product having a shape, the mold has a concave portion having an inner surface having a shape corresponding to the outer surface of the impact molded product, and the punch is provided on an inner surface of the impact molded product. The slag has an end surface and a side surface of a corresponding shape, and the slag is characterized in that a projection is formed inside a flat portion near the periphery on the first surface with which the end surface of the punch contacts.

請求項２に記載のインパクト成形方法は、請求項１に記載のインパクト成形方法において、前記スラグの前記突起部の平面視の輪郭線は、前記パンチの前記端面の輪郭線と同じか、或いは相似形とされた又は差が輪郭線全体で一定であるようにされた拡大又は縮小した形状であることを特徴とする。   In the impact molding method according to the second aspect, in the impact molding method according to the first aspect, the contour of the projection of the slag in plan view is the same as or similar to the contour of the end face of the punch. It is characterized by an enlarged or reduced shape that is shaped or whose difference is constant over the contour.

請求項３に記載のインパクト成形品は、請求項１又は２に記載のインパクト成形方法を用いて製造されることを特徴とする。   The impact molded article according to the third aspect is manufactured by using the impact molding method according to the first or second aspect.

本発明に係るインパクト成形方法及びインパクト成形品によれば、スラグに加工油を塗布して有底筒形状のインパクト成形品を成形する場合に、加工精度が高いものとすることができる。   Advantageous Effects of Invention According to the impact molding method and the impact molded product according to the present invention, when a processing oil is applied to slag to form an impact molded product having a bottomed cylindrical shape, processing accuracy can be increased.

本発明の実施形態に係るインパクト成形方法により成形されるインパクト成形品の一例を示すものであって、（ａ）が平面図、（ｂ）が底面図である。1A and 1B show an example of an impact molded product molded by an impact molding method according to an embodiment of the present invention, wherein FIG. 1A is a plan view and FIG. 1B is a bottom view. 同上のインパクト成形方法により成形される図１Ａで示したインパクト成形品を示すものであって、（ａ）が図１Ａ（ａ）のＡ−Ａで示す第１の方向で切断した端面図、（ｂ）が図１Ａ（ａ）のＢ−Ｂで示す第２の方向で切断した端面図である。FIG. 1B is an end view of the impact molded product shown in FIG. 1A formed by the impact molding method, in which FIG. 1A is cut in a first direction indicated by AA in FIG. FIG. 1B is an end view cut in a second direction indicated by BB in FIG. 1A (a). 同上のインパクト成形方法に用いられるスラグの一例を示すものであって、（ａ）が平面図、（ｂ）が底面図である。FIGS. 2A and 2B show an example of a slag used in the impact molding method, in which FIG. 1A is a plan view and FIG. 同上のインパクト成形方法に用いられる図２Ａで示したスラグを示すものであって、（ａ）が図２Ａ（ａ）のＣ−Ｃで示す第１の方向で切断した端面図、（ｂ）が図２Ａ（ａ）のＤ−Ｄで示す第２の方向で切断した端面図である。FIG. 2A shows a slag shown in FIG. 2A used in the impact molding method, in which FIG. 2A is an end view cut in a first direction indicated by CC in FIG. 2A and FIG. FIG. 2B is an end view cut in a second direction indicated by DD in FIG. 2A (a). 同上のインパクト成形方法における成形装置を第１の方向で切断した端面図であって、（ａ）がパンチの端面がスラグに当たる前の状態のもの、（ｂ）がパンチがスラグを押し潰してインパクト成形品を成形した状態のものである。FIGS. 2A and 2B are end views of the molding apparatus in the impact molding method according to the first embodiment cut in a first direction, wherein FIG. 1A shows a state before the end surface of the punch hits the slag, and FIG. This is a state in which a molded article has been molded. 同上のインパクト成形方法における成形装置を第２の方向で切断した端面図であって、（ａ）がパンチの端面がスラグに当たる前の状態のもの、（ｂ）がパンチがスラグを押し潰してインパクト成形品を成形した状態のものである。FIGS. 2A and 2B are end views of the molding apparatus in the impact molding method according to the first embodiment cut in a second direction, wherein FIG. 1A shows a state before the end surface of the punch hits the slag, and FIG. This is a state in which a molded article has been molded. 同上のインパクト成形方法における図３Ａのスラグ又はインパクト成形品の近傍を拡大して示す端面図であって、（ａ）がパンチの端面がスラグに当たる前の状態のもの、（ｂ）がパンチがスラグを押し潰してインパクト成形品を成形した状態のものである。3A is an enlarged end view showing the vicinity of the slag or the impact molded product of FIG. 3A in the impact molding method, in which FIG. 3A shows a state before the end surface of the punch hits the slag, and FIG. Is crushed to form an impact molded product. 同上のインパクト成形方法における図３Ｂのスラグ又はインパクト成形品の近傍を拡大して示す端面図であって、（ａ）がパンチの端面がスラグに当たる前の状態のもの、（ｂ）がパンチがスラグを押し潰してインパクト成形品を成形した状態のものである。3B is an enlarged end view showing the vicinity of the slag or the impact molded product of FIG. 3B in the impact molding method, in which (a) shows a state before the end surface of the punch hits the slag, and (b) shows a state in which the punch has a slag. Is crushed to form an impact molded product. 同上のインパクト成形方法により成形されたインパクト成形品の試作品を第１の方向で切断した断面写真であって、（ａ）が全体を示すもの、（ｂ）が底部の内面の周縁近傍を拡大して示すものである。FIG. 2 is a cross-sectional photograph of a prototype of an impact molded product molded by the impact molding method in the first direction, which is cut in a first direction, in which (a) shows the entirety, and (b) enlarges the vicinity of the periphery of the inner surface of the bottom. It is shown. 従来の有底筒形状のインパクト成形品の底部の内面の周縁近傍を示す拡大断面写真である。It is an expanded sectional photograph which shows the vicinity of the periphery of the inner surface of the bottom part of the conventional impact-molded product with a bottomed cylinder shape.

本発明の実施形態を、以下説明する。本発明の実施形態に係るインパクト成形方法は、図１Ａ（ａ）、（ｂ）及び図１Ｂ（ａ）、（ｂ）に例示するようなインパクト成形品１を成形するものである。インパクト成形品１は、有底筒形状であって、底部１ａとそれに垂直になるように形成される筒形状側部１ｂを有するものである。インパクト成形品１は、後述するように、パンチ３１よりスラグ２に衝撃を与えて金属流動させることにより成形して製造するものなので、製造上の一般的な制約は有るが、底部１ａ及び筒形状側部１ｂにおいて様々な形状が可能である。   An embodiment of the present invention will be described below. The impact molding method according to the embodiment of the present invention is for molding an impact molded article 1 as illustrated in FIGS. 1A (a) and 1 (b) and FIGS. 1B (a) and 1 (b). The impact molded article 1 has a bottomed tubular shape and has a bottom portion 1a and a tubular side portion 1b formed to be perpendicular to the bottom portion 1a. As will be described later, the impact molded article 1 is manufactured by applying an impact to the slag 2 from the punch 31 to cause the slag 2 to flow through the metal, so that there are general restrictions on the production. Various shapes are possible on the side 1b.

底部１ａは、例えば、内面（底面）を、周縁（輪郭線）１ａａがトラック形状、つまり一対の対辺同士が線対称で直線状であり他の一対の対辺同士が線対称で弧状であるようにすることができ（図１Ａ（ａ）参照）る。また、内面（底面）に段差（例えば、図１Ａ（ａ）及び図１Ｂ（ｂ）に示す段差１ａｂなど）を設けることも可能である。底部１ａの外面は、平坦で周縁（輪郭線）が円形状であるようにすることができる（図１Ａ（ｂ）参照）。   The bottom portion 1a has, for example, an inner surface (bottom surface) such that a peripheral edge (contour line) 1aa has a track shape, that is, a pair of opposite sides are line-symmetric and linear, and another pair of opposite sides is line-symmetric and arc-shaped. (See FIG. 1A (a)). It is also possible to provide a step (for example, a step 1ab shown in FIGS. 1A (a) and 1B (b)) on the inner surface (bottom surface). The outer surface of the bottom 1a can be flat and have a circular periphery (contour line) (see FIG. 1A (b)).

筒形状側部１ｂの内面及び外面はそれぞれ、底部１ａの内面、外面の周縁においてそれに垂直になるように形成される面であるが、段差（例えば、図１Ａ（ａ）及び図１Ｂ（ａ）に示す段差１ｂａなど）を設けることも可能である。   The inner surface and the outer surface of the cylindrical side portion 1b are surfaces formed so as to be perpendicular to the inner surface and the outer surface of the bottom portion 1a, respectively, at a step (for example, FIGS. 1A (a) and 1B (a)). It is also possible to provide a step 1ba shown in FIG.

本発明の実施形態に係るインパクト成形方法は、図２Ａ（ａ）、（ｂ）及び図２Ｂ（ａ）、（ｂ）に示すようなスラグ２を用いるものである。スラグ２は、アルミニウムやアルミニウム合金などの金属材料のものであり、円板状のものとすることができる。スラグ２は、その第１面（インパクト成形時に後述するパンチ３１の端面３１ａが接する面）に突起部２１が形成されている。突起部２１は、周縁近傍平坦部（スラグ２の第１面の周縁近傍の平坦部）２２の内側に形成されている。   The impact molding method according to the embodiment of the present invention uses a slag 2 as shown in FIGS. 2A (a) and 2 (b) and FIGS. 2B (a) and 2 (b). The slag 2 is made of a metal material such as aluminum or an aluminum alloy, and may be a disk. The slag 2 has a projection 21 formed on a first surface thereof (a surface that comes into contact with an end surface 31a of a punch 31 described later during impact molding). The protrusion 21 is formed inside a flat portion near the periphery (a flat portion near the periphery of the first surface of the slag 2) 22.

突起部２１の平面視の輪郭線（立ち上がりの輪郭線）２１ａは、パンチ３１の端面３１ａの周縁（輪郭線）３１ａａと同じか或いは拡大又は縮小した形状とする（図４Ａ（ａ）及び図４Ｂ（ａ）参照）。そうすると、後述するようにスラグ２がインパクト成形時に押し潰されるとき、パンチ３１の端面３１ａの輪郭線３１ａａ近傍において、突起部２１を形成していた金属材料が確実に底部１ａとなる部分から筒形状側部１ｂとなる部分に流動するようにし易い。また、そのため、拡大又は縮小の場合は、好ましくは、相似形とするか、或いは、両者の差が輪郭線全体で一定であるようにする。また、そのため、拡大の場合は、好ましくは、突起部２１は、パンチ３１の端面３１ａの輪郭線３１ａａと同じ位置（図４Ａ（ａ）及び図４Ｂ（ａ）において破線で示す位置）では、斜面とする。   The outline 21a of the projection 21 in plan view (rise outline) 21a is the same as the peripheral edge (outline) 31aa of the end face 31a of the punch 31 or has an enlarged or reduced shape (FIGS. 4A (a) and 4B). (A)). Then, as described later, when the slag 2 is crushed during the impact molding, the metal material forming the protrusion 21 is surely formed into a cylindrical shape near the contour line 31aa of the end surface 31a of the punch 31 from the bottom 1a. It is easy to flow to the part to be the side part 1b. Therefore, in the case of enlargement or reduction, it is preferable that the shape is similar or the difference between the two is constant over the entire contour line. Therefore, in the case of enlargement, preferably, the protrusion 21 is inclined at the same position as the contour 31aa of the end face 31a of the punch 31 (the position indicated by the broken line in FIGS. 4A (a) and 4B (a)). And

本発明の実施形態に係るインパクト成形方法は、スラグ２に加工油を全面に塗布し、図３Ａ（ａ）、図３Ｂ（ａ）及び図４Ａ（ａ）、図４Ｂ（ａ）に示すように、スラグ２を金型３に配置し、図３Ａ（ｂ）、図３Ｂ（ｂ）及び図４Ａ（ｂ）、図４Ｂ（ｂ）に示すように、パンチ３１によりスラグ２に衝撃を与えることによりインパクト成形品１を成形する。   In the impact molding method according to the embodiment of the present invention, a processing oil is applied to the entire surface of the slag 2, and as shown in FIGS. 3A (a), 3B (a), 4A (a), and 4B (a). By placing the slag 2 in the mold 3 and applying an impact to the slag 2 by the punch 31 as shown in FIGS. 3A (b), 3B (b), 4A (b) and 4B (b). The impact molded article 1 is molded.

金型３は、凹部３ａが設けられている。凹部３ａは、インパクト成形時にインパクト成形品１の外面、つまり底部１ａの外面及び筒形状側部１ｂの外面の型枠となるように、インパクト成形品１の外面に対応する内面、つまり底面３ａａ及び側面を有する。   The mold 3 is provided with a concave portion 3a. The concave portion 3a has an inner surface corresponding to the outer surface of the impact molded product 1, that is, the bottom surface 3aa and the outer surface of the impact molded product 1 so as to form an outer surface of the impact molded product 1 at the time of impact molding, that is, an outer surface of the bottom 1a and an outer surface of the cylindrical side portion 1b. Has sides.

パンチ３１は、インパクト成形時にインパクト成形品１の内面、つまり底部１ａの内面及び筒形状側部１ｂの内面の型枠となるように、インパクト成形品１の内面に対応する外面、つまり、端面（底面）３１ａ及び側面を有する。例えば、上記のようにインパクト成形品１の底部１ａの内面の周縁（輪郭線）１ａａがトラック形状であるならば、パンチ３１の端面３１ａの周縁（輪郭線）３１ａａがトラック形状である。なお、図４Ａ（ａ）、図４Ｂ（ａ）で示す周縁（輪郭線）３１ａａから垂下する破線は、上述したように、スラグ２の突起部２１の輪郭線２１ａとの位置関係を示すためのものである。   The outer surface corresponding to the inner surface of the impact molded product 1, that is, the end surface (i.e., the end face ( (Bottom surface) 31a and side surfaces. For example, if the peripheral edge (contour line) 1aa of the inner surface of the bottom 1a of the impact molded product 1 has a track shape as described above, the peripheral edge (contour line) 31aa of the end face 31a of the punch 31 has a track shape. 4A (a) and 4B (a), the broken line hanging from the peripheral edge (contour line) 31aa indicates the positional relationship with the contour line 21a of the protrusion 21 of the slag 2 as described above. Things.

インパクト成形時には、スラグ２を、その第２面（第１面の反対側の面）を金型３の凹部３ａの底面３ａａに接させて、凹部３ａに位置固定して配置する（図３Ａ（ａ）、図３Ｂ（ａ）及び図４Ａ（ａ）、図４Ｂ（ａ）参照）。それから、スラグ２の第１面にパンチ３１の端面３１ａを当てて、スラグ２に衝撃を与える。その衝撃により、スラグ２は押し潰され、全体的には、インパクト成形品１の底部１ａと筒形状側部１ｂを形成するように、底部１ａとなる部分から筒形状側部１ｂとなる部分に向かって金属材料が流動する。このとき、突起部２１は、押し潰され、突起部２１の金属材料は、底部１ａとなる部分において中央部から周辺部に向かって広がりながら加工油とともに流動し、それから、筒形状側部１ｂとなる部分に加工油とともに流動する。従って、成形されたインパクト成形品１の底部１ａの内面の周縁には、加工油が溜まり難くなり、図５（ａ）、（ｂ）に示すように、加工精度、すなわち底部１ａの内面と筒形状側部１ｂの内面とが形成する垂直部分の加工精度が高いものとなる。   At the time of impact molding, the slag 2 is arranged with its second surface (the surface opposite to the first surface) in contact with the bottom surface 3aa of the concave portion 3a of the mold 3 and fixed in the concave portion 3a (FIG. 3A ( a), FIG. 3B (a) and FIG. 4A (a), FIG. 4B (a)). Then, the end surface 31a of the punch 31 is applied to the first surface of the slag 2 to give an impact to the slag 2. Due to the impact, the slag 2 is crushed, and as a whole, from the portion forming the bottom 1a to the portion forming the cylindrical side 1b so as to form the bottom 1a and the cylindrical side 1b of the impact molded product 1. The metal material flows toward it. At this time, the protrusion 21 is crushed, and the metal material of the protrusion 21 flows together with the processing oil while spreading from the center to the periphery at the portion serving as the bottom 1a. It flows with the processing oil to the part. Therefore, the processing oil hardly accumulates on the periphery of the inner surface of the bottom 1a of the formed impact molded product 1, and as shown in FIGS. 5A and 5B, the processing accuracy, that is, the inner surface of the bottom 1a and the cylinder The processing accuracy of the vertical portion formed by the inner surface of the shape side portion 1b is high.

以上、本発明の実施形態に係るインパクト成形方法について説明したが、本発明は、上述の実施形態に記載したものに限られることなく、特許請求の範囲に記載した事項の範囲内でのさまざまな変更が可能である。例えば、スラグ２の第２面については平坦に限らなくてもよい。   As described above, the impact molding method according to the embodiment of the present invention has been described. However, the present invention is not limited to the one described in the above-described embodiment, and may be variously modified within the scope of the matters described in the claims. Changes are possible. For example, the second surface of the slag 2 does not have to be flat.

１ インパクト成形品
１ａ インパクト成形品の底部
１ａａ インパクト成形品の底部の内面の周縁（輪郭線）
１ａｂ インパクト成形品の底部の内面の段差
１ｂ インパクト成形品の筒形状側部
１ｂａ インパクト成形品の筒形状側部の外面の段差
２ スラグ
２１ スラグの突起部
２１ａ スラグの突起部の輪郭線
２２ スラグ周縁近傍平坦部
３ 金型
３ａ 金型の凹部
３ａａ 金型の凹部の底面
３１ パンチ
３１ａ パンチの端面（底面）
３１ａａ パンチの端面の周縁（輪郭線）
１０１ａ インパクト成形品の底部
１０１ｂ インパクト成形品の筒形状側部 1 Impact Molded Product 1a Bottom of Impact Molded Product 1aa Perimeter (Contour Line) of Inner Surface of Bottom of Impact Molded Product
1ab Step of inner surface at bottom of impact molded product 1b Cylindrical side of impact molded product 1ba Step of outer surface of cylindrical shape of impact molded product 2 Slag 21 Slag protrusion 21a Contour line of slag protrusion 22 Slag periphery Near flat part 3 Mold 3a Mold concave part 3aa Mold concave part bottom surface 31 Punch 31a Punch end surface (bottom surface)
31aa Peripheral edge (outline) of punch end face
101a Bottom part of impact molded article 101b Cylindrical side part of impact molded article

Claims (3)

加工油が塗布されたスラグを金型に配置し、パンチにより該スラグに衝撃を与えて金属流動させることにより有底筒形状のインパクト成形品を成形するインパクト成形方法において、
前記金型は、前記インパクト成形品の外面に対応する形状の内面を有する凹部が設けられており、
前記パンチは、前記インパクト成形品の内面に対応する形状の端面及び側面を有しており、
前記スラグは、前記パンチの端面が接する第１面において周縁近傍平坦部の内側に突起部が形成されていることを特徴とするインパクト成形方法。 In an impact molding method of disposing a slag coated with a processing oil in a mold, and applying an impact to the slag with a punch to cause the metal to flow to form an impact molded product having a bottomed cylindrical shape,
The mold is provided with a concave portion having an inner surface having a shape corresponding to the outer surface of the impact molded product,
The punch has an end surface and side surfaces having a shape corresponding to the inner surface of the impact molded product,
An impact molding method, wherein the slag has a projection formed inside a flat portion near a peripheral edge on a first surface with which an end face of the punch contacts. 請求項１に記載のインパクト成形方法において、
前記スラグの前記突起部の平面視の輪郭線は、前記パンチの前記端面の輪郭線と同じか、或いは相似形とされた又は差が輪郭線全体で一定であるようにされた拡大又は縮小した形状であることを特徴とするインパクト成形方法。 In the impact molding method according to claim 1,
The contour of the projection of the slug in plan view is the same as or similar to the contour of the end face of the punch, or is enlarged or reduced so that the difference is constant throughout the contour. An impact molding method characterized by having a shape. 請求項１又は２に記載のインパクト成形方法を用いて製造されることを特徴とするインパクト成形品。   An impact molded article manufactured by using the impact molding method according to claim 1.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343059A (en) * 1976-09-29 1978-04-18 Kuc John Method of forming socket spanner
JPS59141340A (en) * 1983-02-02 1984-08-14 Hitachi Ltd Production of stepped hollow parts
JPH0360839A (en) * 1989-07-28 1991-03-15 Honda Motor Co Ltd Manufacture of outer race of constant velocity joint
US5285873A (en) * 1992-02-19 1994-02-15 Ray Arbesman Disk brake friction assembly
US5572893A (en) * 1994-12-01 1996-11-12 Goda; Mark E. Method of necking and impact extruded metal container
JPH11254075A (en) * 1998-03-06 1999-09-21 Daido Steel Co Ltd Forging method for stainless steel sleeve
WO2003068427A1 (en) * 2002-02-15 2003-08-21 Furukawa-Sky Aluminum Corp. Impact extrusion formed article, impact extrusion forming method, and impact extrusion forming device
JP2016068107A (en) * 2014-09-29 2016-05-09 Ntn株式会社 Molding method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343059A (en) * 1976-09-29 1978-04-18 Kuc John Method of forming socket spanner
JPS59141340A (en) * 1983-02-02 1984-08-14 Hitachi Ltd Production of stepped hollow parts
JPH0360839A (en) * 1989-07-28 1991-03-15 Honda Motor Co Ltd Manufacture of outer race of constant velocity joint
US5285873A (en) * 1992-02-19 1994-02-15 Ray Arbesman Disk brake friction assembly
US5572893A (en) * 1994-12-01 1996-11-12 Goda; Mark E. Method of necking and impact extruded metal container
JPH11254075A (en) * 1998-03-06 1999-09-21 Daido Steel Co Ltd Forging method for stainless steel sleeve
WO2003068427A1 (en) * 2002-02-15 2003-08-21 Furukawa-Sky Aluminum Corp. Impact extrusion formed article, impact extrusion forming method, and impact extrusion forming device
JP2016068107A (en) * 2014-09-29 2016-05-09 Ntn株式会社 Molding method

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