JPH11254055A - Method for shear-punching in two processes in same direction - Google Patents
Method for shear-punching in two processes in same directionInfo
- Publication number
- JPH11254055A JPH11254055A JP10061527A JP6152798A JPH11254055A JP H11254055 A JPH11254055 A JP H11254055A JP 10061527 A JP10061527 A JP 10061527A JP 6152798 A JP6152798 A JP 6152798A JP H11254055 A JPH11254055 A JP H11254055A
- Authority
- JP
- Japan
- Prior art keywords
- punch
- work
- die
- hole
- roundness
- 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.)
- Pending
Links
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Punching Or Piercing (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば自動車の
ホイ−ルのデイスクの穴あけ加工のような金属製ワ−ク
のせん断穴あけ加工方法に係り、詳記すれば、優れた切
断面性状が得られる金属製ワ−クの同一方向二工程せん
断穴あけ加工方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for shearing a metal work, for example, for drilling a disk of an automobile wheel, and more particularly, to obtaining an excellent cut surface property. And two-step shear hole drilling method for metal work in the same direction.
【０００２】[0002]
【従来の技術】自動車のホイールのデイスク部には、い
わゆる飾り穴が形成されている。この飾り穴部位は、コ
ールドスピニングにより強く冷間加工が施されているの
で、この部位は強度が上昇している。2. Description of the Related Art A so-called decorative hole is formed in a disk portion of an automobile wheel. Since the decorative hole portion is strongly cold-worked by cold spinning, the strength of the decorative hole portion is increased.
【０００３】この強度が上昇した部位は、飾り穴を施す
せん断穴あけ加工での割れ感受性が高い状態にある。こ
のデイスク部材にハイテン材（ここでは４９０Ｎ／ｍｍ2
以上）を用いた場合、飾り穴部位の強度はさらに高くな
り、割れ感受性は益々強くなる。[0003] The portion where the strength is increased is in a state of being highly susceptible to cracking in a shear hole forming process for forming a decorative hole. A high tensile material (490 N / mm 2 in this case) is used for this disk member.
When the above method is used, the strength of the decorative hole portion is further increased, and the crack sensitivity is further increased.
【０００４】このような状態にある部位に、従来の慣用
抜きでせん断穴あけ加工を施すと、切断面に板厚中心割
れが生じる。[0004] When a portion in such a state is subjected to a shear hole drilling process by a conventional drilling, a crack at the center of the sheet thickness occurs on the cut surface.
【０００５】このような割れを防止する方法として、本
出願人は、同一方向二工程せん断穴あけ加工法を開発
し、先に特許出願した。As a method of preventing such cracking, the present applicant has developed a two-step shear hole drilling method in the same direction, and has previously filed a patent application.
【０００６】上記同一方向二工程せん断穴あけ加工方法
は、第１工程でワークを半抜きし、第２工程ではパンチ
とダイスとを交換し、いわゆる慣用法により抜き落とす
方法であり、この方法によって、ハイテン材の飾り穴部
の板厚中心割れの問題は解決した。The above-described two-step shear hole drilling method in the same direction is a method in which a workpiece is half-punched in a first step, a punch and a die are exchanged in a second step, and the workpiece is removed by a so-called conventional method. The problem of cracks in the center of the thickness of the decorative hole of the high-tensile material was solved.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記方
法は、図１に示すように、第１工程の半抜きの段階で、
ワーク１の半抜きの加工部位に亀裂２が発生する場合が
生じる。However, in the above method, as shown in FIG.
Cracks 2 may occur in the half-cut portion of the work 1.
【０００８】このように亀裂２が生じると、第２工程で
ダイス側から発生する亀裂との会合がうまくいかないの
で、図２に示すように、第２工程で打ち抜いた切断面３
の亀裂が発生した部位に、バリ４や２次せん断５が生
じ、切断面の外観が悪化する。尚、図２中、符号６は、
第１工程で形成された切断面である。[0008] When the crack 2 is generated in this way, the association with the crack generated from the die side in the second step is not successful, so that the cut surface 3 punched out in the second step as shown in FIG.
The burr 4 and the secondary shear 5 are generated in the portion where the crack has occurred, and the appearance of the cut surface is deteriorated. In addition, in FIG.
It is a cut surface formed in the first step.
【０００９】このようにバリ４や２次せん断５が生じる
と、次工程でコイニングが均等に付与できなくなるの
で、コイニング後の外観も見栄えが悪くなる。When the burrs 4 and the secondary shears 5 occur, coining cannot be uniformly applied in the next step, so that the appearance after coining also deteriorates.
【００１０】この発明は、第１工程での亀裂の発生を防
止して、第２工程でのバリや２次せん断の発生を防止す
ることによって、優れた切断面性状が得られる同一方向
二工程せん断穴あけ加工方法を提供することを目的とす
る。[0010] The present invention is directed to two steps in the same direction in which excellent cut surface properties can be obtained by preventing the occurrence of cracks in the first step and the occurrence of burrs and secondary shearing in the second step. An object of the present invention is to provide a method for processing a shear hole.
【００１１】[0011]
【課題を解決するための手段】上記目的に沿う本発明の
構成は、被加工材であるワ−クを、パンチとダイスとを
使用して半抜きする第１工程と、該半抜きしたワ−クを
前記と同一方向から、パンチとダイスとを使用して抜き
落とす第２工程とを具備した金属製ワ−クの二工程せん
断穴あけ加工方法に於いて、前記第１工程のパンチの刃
先に、亀裂の発生を防止する丸み（Ｒ）を付与したこと
を特徴とする。According to the structure of the present invention, there is provided a first step of half-cutting a work as a workpiece using a punch and a die, and a step of half-cutting the work. A second step of punching the workpiece from the same direction as above using a punch and a die. And a roundness (R) for preventing the occurrence of cracks.
【００１２】[0012]
【発明の実施の形態】次に、本発明の実施の形態を説明
する。本発明では、第１工程と第２工程の二工程で穴あ
け加工を行うことを前提としている。図３及び図４に示
すように、第１工程での半抜きにおいて、パンチ７先端
部分には、せん断条件に応じて１５゜以下のテ−パ−
（θ）が付いた形状になっている。このようにテーパー
を付与することによって、ワークがパンチと共に持ち上
がるトラブルを防止することができる。図４に示すよう
に、テーパー部の高さｅは、ワークの厚さｔより大きく
（ｅ≧ｔ）するのが良い。Next, an embodiment of the present invention will be described. In the present invention, it is assumed that drilling is performed in two steps, a first step and a second step. As shown in FIGS. 3 and 4, in the half blanking in the first step, the tip of the punch 7 has a taper of 15 ° or less depending on the shearing condition.
It has a shape with (θ). By giving the taper in this way, it is possible to prevent a trouble that the work is lifted together with the punch. As shown in FIG. 4, the height e of the tapered portion is preferably larger than the thickness t of the work (e ≧ t).
【００１３】パンチ７の刃先には、丸み（Ｒ）が形成さ
れている。このように、刃先に丸み（Ｒ）を形成するこ
とによって、図５に示すように、第１工程でワーク１の
半抜きの加工部位に亀裂が発生するのを避けることがで
きる。The edge of the punch 7 is rounded (R). By forming the roundness (R) on the cutting edge in this way, as shown in FIG. 5, it is possible to avoid the generation of cracks in the half-blanked processing portion of the work 1 in the first step.
【００１４】本発明で丸み（Ｒ）というのは、略円弧状
の曲面に形成されていれば良く、完全な円弧状でなくと
も差し支えない。要は、第１工程で亀裂が発生しないよ
うな丸み（Ｒ）に形成すれば良い。In the present invention, the roundness (R) is only required to be formed in a substantially arc-shaped curved surface, and does not have to be a complete arc. The point is that the first step may be formed in a round shape (R) so that no crack is generated.
【００１５】図４に示すように、ダイス８の刃先にも丸
み（Ｒ′）が形成されている。このように、ダイス８の
刃先にＲ′を形成することによって、ダイス側のワーク
の半抜き位置に亀裂が発生するのを防止することができ
る。As shown in FIG. 4, the edge of the die 8 is also rounded (R '). As described above, by forming R 'on the cutting edge of the die 8, it is possible to prevent a crack from being generated at the half punching position of the work on the die side.
【００１６】パンチ７の刃先端面のＲの曲率半径は、
０．５〜２．０ｍｍ好ましくは１．０〜１．５ｍｍであ
る。ダイスの刃先Ｒ′の曲率半径は、Ｒよりも大きい方
が好ましく、具体的には１．５〜３．０ｍｍ好ましくは
２．０〜２．５ｍｍである。The radius of curvature of the radius R of the blade tip surface of the punch 7 is
It is 0.5 to 2.0 mm, preferably 1.0 to 1.5 mm. The radius of curvature of the cutting edge R 'of the die is preferably larger than R, specifically 1.5 to 3.0 mm, and more preferably 2.0 to 2.5 mm.
【００１７】図３に示すように、第１工程のダイスの抜
き穴径Ａとパンチ端面（ワーク１と接する部分）の径Ｂ
とは、クリアランス（（Ａ−Ｂ）／２）がマイナスとな
るようにするのが良い。As shown in FIG. 3, the diameter A of the punched hole of the die in the first step and the diameter B of the punch end surface (the portion in contact with the work 1)
Means that the clearance ((A−B) / 2) is negative.
【００１８】前記したように、パンチ７にテーパーを付
与し、クリアランスがマイナスとなるようにして半抜き
すると、抜きカス側と製品側とは、互いに圧縮の力を受
けながら変形するから、半抜き状態での分離された部分
の加工面は、鏡面状態となり、極めて良好となる。As described above, when the punch 7 is tapered and half-punched so that the clearance becomes negative, the punched waste side and the product side are deformed while receiving compressive force from each other. The machined surface of the separated portion in the state becomes a mirror surface state, which is extremely good.
【００１９】半抜きの程度（加工量）は、ワ−ク１の材
質や板厚によって変化するが、板厚の２５％〜８０％と
するのが良い。加工量が、２５％より少ないと、第２工
程での加工面性状が悪化し、逆に８０％より多いと、パ
ンチに対する負荷が大きくなり、パンチ寿命の低下をも
たらす。The degree of half-blanking (the amount of processing) varies depending on the material and plate thickness of the work 1, but it is preferable to set it to 25% to 80% of the plate thickness. If the processing amount is less than 25%, the properties of the processed surface in the second step deteriorate, and if it is more than 80%, the load on the punch increases, leading to a reduction in punch life.
【００２０】半抜きを、上記加工量とすることによっ
て、ワ−クの板厚中心部に不純物が偏析している場合や
強加工を受けている場合でも、中心部での割れを効果的
に防止することができると共に、良好な加工面を得るこ
とができる。By setting the half-blanking to the above processing amount, cracks at the center can be effectively prevented even when impurities are segregated at the center of the workpiece thickness or when the workpiece is subjected to heavy working. It is possible to prevent such a problem and obtain a good processed surface.
【００２１】第２工程では、図６に示すように、パンチ
７′の形状は第１工程のパンチの形状と異なり、ストレ
−ト形状のものを使用し、ダイス８′の抜き穴径を第１
工程のダイス８の半抜き穴の径より大きく、即ち通常の
慣用抜きと同じようにして打ち抜く。In the second step, as shown in FIG. 6, the shape of the punch 7 'is different from the shape of the punch in the first step, and a straight shape is used. 1
The diameter is larger than the diameter of the half punched hole of the die 8 in the process, that is, punching is performed in the same manner as ordinary punching.
【００２２】この第２工程のダイス８′は、図６に示す
ように、パンチ７′の側面とダイス８′の抜き穴の側面
とのクリアランス（（Ａ′−Ｂ′）／２）が、第２工程
でこれから更に打ち抜くべきワ−ク１の板厚の＋４〜＋
３５％となるように選択するのが良い。As shown in FIG. 6, the die 8 'in the second step has a clearance ((A'-B') / 2) between the side surface of the punch 7 'and the side surface of the punched hole of the die 8'. In the second step, the plate thickness of the work 1 to be further punched is +4 to +
It is better to select 35%.
【００２３】第２工程に於いて、第１工程で半抜きされ
たパンチ穴に、パンチを正確に打ち込むには、ワ−ク１
の位置決めを正確に行うのが良い。In the second step, in order to accurately punch the punch into the punch hole half-punched in the first step, it is necessary to use a work 1
It is good to perform the positioning accurately.
【００２４】そのためには、例えば自動車用ホイールの
デイスクの飾り穴加工を行う場合は、位置決めとしてボ
ルト穴を活用すれば良い。For this purpose, for example, when a decorative hole is formed on a disk of an automobile wheel, a bolt hole may be used for positioning.
【００２５】また、ワークに貫通孔（ガイド孔）を形成
し、該ガイド孔に第２工程のパンチに連設した位置決め
部材を嵌合して、ワークを位置決めすると同時に打ち抜
くようにしても良い。Alternatively, a through hole (guide hole) may be formed in the work, and a positioning member connected to the punch in the second step may be fitted into the guide hole so that the work is positioned and punched out at the same time.
【００２６】[0026]
【実施例】次に、大型実デイスク飾り穴の同一方向２工
程抜きにおいて、切断面の性状に及ぼすパンチ刃先の丸
み（Ｒ）の影響を明らかにする実施例を説明する。Next, a description will be given of an embodiment for clarifying the influence of the roundness (R) of the punch edge on the properties of the cut surface when two large holes are drilled in the same direction in a real disk decoration hole.
【００２７】（供試ワーク）ワークは、コールドスピニ
ング加工を行った５４０Ｎ／ｍｍ2級のハイテン材を用
いた。ワークのフラット部の板厚は１２ｍｍ、飾り穴か
らデイスク端部にかけて、板厚はコールドスピンにより
薄くなっている。飾り穴位置の板厚は、デイスク中央側
で約９ｍｍ、デイスク端部側で約５ｍｍである。(Work to be Tested) As the work, a high-tensile material of 540 N / mm 2 grade subjected to cold spinning was used. The plate thickness of the flat portion of the work is 12 mm, and the plate thickness is reduced by cold spin from the decoration hole to the end of the disk. The thickness of the decorative hole is about 9 mm at the center of the disc and about 5 mm at the end of the disc.
【００２８】尚、上記供試ワークは、飾り穴位置は冷間
加工が付与されていることにより強度が上昇し、ワレ感
受性が高い状態にある。そのため、このワークを慣用抜
きすると、板厚中心に割れが生ずることが、実験により
確認されている。Incidentally, in the above-mentioned test work, the strength of the decorative hole position is increased due to the cold working, and the crack sensitivity is high. For this reason, it has been confirmed by experiments that cracking occurs at the center of the plate thickness when the work is conventionally punched.
【００２９】（試験方法）第１工程用の半抜きパンチと
して、端面径８０．４０、刃先Ｒ０．５〜１．０ｍ
ｍ、端面径はと同じで刃先Ｒ１．０〜１．５ｍｍ、
端面径８０．８０ｍｍ、刃先Ｒ０．５〜１．０ｍｍ、
端面径はと同じで刃先Ｒ１．０〜１．５ｍｍの４形
状を作製した。尚、パンチ先端側のテーパー（θ）は、
全て６゜とした。(Test Method) As a half punch for the first step, an end face diameter of 80.40 and a cutting edge R of 0.5 to 1.0 m were used.
m, the end face diameter is the same as the blade edge R 1.0-1.5 mm,
End face diameter 80.80 mm, cutting edge R 0.5-1.0 mm,
Four shapes having the same edge diameter as the above and having a blade edge R of 1.0 to 1.5 mm were produced. The taper (θ) on the tip side of the punch is
All were 6 mm.
【００３０】第１工程用のダイスは、抜き穴の径が７
９．００ｍｍ、刃先Ｒの曲率半径が２．０〜２．５ｍｍ
のものを使用した。第２工程は、パンチ７′及びダイス
８′の刃先には丸み（Ｒ）を付与していない通常のもの
を使用し、前記したような通常の慣用抜きと同じように
して行った。The die for the first step has a hole diameter of 7 mm.
9.00 mm, radius of curvature of cutting edge R is 2.0 to 2.5 mm
Was used. The second step was carried out in the same manner as the above-mentioned ordinary punching, using ordinary ones without roundness (R) for the cutting edges of the punch 7 'and the die 8'.
【００３１】（結果）第１工程のパンチ７の刃先Ｒを上
記したようにすることにより、Ｒを付さない場合と比べ
て、優れた切断面性状が得られることが確認された。(Results) It was confirmed that by setting the cutting edge R of the punch 7 in the first step as described above, superior cut surface properties can be obtained as compared with the case where no R is provided.
【００３２】上記結果から、優れた切断面性状を得るに
は、クリアランス（図３の（Ａ−Ｂ）／２）と食い込み
量の調整だけでは不可能であり、パンチ刃先Ｒの曲率半
径を適正にすることにより解決可能であることが明らか
になった。本実施例では、パンチ刃先Ｒの曲率半径が
１．０〜１．５ｍｍ、クリアランスがマイナス０．９ｍ
ｍのとき最も優れた性状が得られた。From the above results, it is impossible to obtain excellent cut surface properties only by adjusting the clearance ((AB) / 2 in FIG. 3) and the amount of bite, and the radius of curvature of the punch edge R is adjusted appropriately. It became clear that it was possible to solve it. In this embodiment, the radius of curvature of the punch edge R is 1.0 to 1.5 mm, and the clearance is −0.9 m.
At the time of m, the most excellent properties were obtained.
【００３３】本発明方法は、１ｍｍ以下の薄板から２０
ｍｍ以上の厚板に対しても適用することができ、ワ−ク
の厚さは特に限定されない。また、ワ−クの材質は、鉄
鋼材だけでなく、各種金属や合金に対しても適用可能で
ある。ワ−クの形状についても、平板だけでなく曲面に
対しても適用することができる。According to the method of the present invention, a thin plate having a thickness of 1 mm or less
The invention can be applied to a plate having a thickness of not less than mm, and the thickness of the work is not particularly limited. The material of the work can be applied not only to steel materials but also to various metals and alloys. The shape of the work can be applied not only to a flat plate but also to a curved surface.
【００３４】本発明方法は、自動車のホイ−ルのデイス
クのハブ穴，ボルト穴及び飾り穴の穴あけ加工に適用で
きるだけでなく、あらゆる金属及び合金の穴加工部品に
対して適用することができる。また、打ち抜く穴の形状
は、円形、楕円形等、従来の慣用抜きで打ち抜く形状に
は、全て打ち抜くことができる。The method of the present invention can be applied not only to the drilling of hub holes, bolt holes, and decorative holes on disks of automobile wheels, but also to the drilling parts of all metals and alloys. Further, the shape of the hole to be punched can be any shape such as a circle, an ellipse, or the like, which is punched by a conventional punching.
【００３５】[0035]
【発明の効果】本発明によれば、第１工程でパンチに丸
み（Ｒ）を付与しているので、ワークの半抜きの加工部
位に亀裂が発生するのを回避することができる。その結
果、第２工程でバリや２次せん断が発生しないから、全
周に亙って優れた外観の切断面が得られる。According to the present invention, the roundness (R) is imparted to the punch in the first step, so that it is possible to avoid the occurrence of cracks in the half-blanked portion of the work. As a result, burrs and secondary shear do not occur in the second step, so that a cut surface having an excellent appearance can be obtained over the entire circumference.
【００３６】また、次工程でコイニングも均等に付与で
きるので、コイニング後の外観の見栄えも優れたものと
なる。In addition, since coining can be evenly applied in the next step, the appearance after coining also becomes excellent.
【００３７】[0037]
【図１】２工程穴あけ加工方法において従来の第１工程
で半抜きしたワークの断面図である。FIG. 1 is a cross-sectional view of a half-punched work in a conventional first step in a two-step drilling method.
【図２】従来の二工程穴あけ加工方法で抜き落とした穴
の斜視図である。FIG. 2 is a perspective view of a hole extracted by a conventional two-step drilling method.
【図３】本発明の第１工程の断面図である。FIG. 3 is a sectional view of a first step of the present invention.
【図４】図３Ｘ部の拡大図である。FIG. 4 is an enlarged view of a part X in FIG. 3;
【図５】本発明の第１工程で半抜きしたワークの断面図
である。FIG. 5 is a cross-sectional view of a workpiece half-blanked in a first step of the present invention.
【図６】本発明の第２工程を示す断面図である。FIG. 6 is a sectional view showing a second step of the present invention.
【図７】本発明の方法で抜き落とした穴の斜視図であ
る。FIG. 7 is a perspective view of a hole dropped by the method of the present invention.
１ ワ−ク ２ 亀裂 ３，３′ 第２工程で打ち抜いた切断
面 ４ バリ ５ ２次せん断 ６，６′ 第１工程で形成された切断
面 ７，７′ パンチ ８，８′ ダイス Ａ 第１工程のダイスの抜き穴
径 Ｂ 第１工程のパンチ端面径 Ａ′ 第２工程のダイスの抜き穴
径 Ｂ′ 第２工程のパンチ径 Ｒ パンチ刃先の丸み Ｒ′ ダイス刃先の丸みDESCRIPTION OF SYMBOLS 1 Work 2 Crack 3,3 'Cut surface punched in 2nd process 4 Burr 5 Secondary shear 6,6' Cut surface formed in 1st process 7,7 'Punch 8,8' Dice A 1st Die hole diameter of process die B Punch end face diameter of first process A 'Die hole diameter of second process die B' Punch diameter of second process R Roundness of punch edge R 'Roundness of die edge
Claims (10)
とを使用して半抜きする第１工程と、該半抜きしたワ−
クを前記と同一方向から、パンチとダイスとを使用して
抜き落とす第２工程とを具備した金属製ワ−クの二工程
せん断穴あけ加工方法に於いて、前記第１工程のパンチ
の刃先に、亀裂の発生を防止する丸み（Ｒ）を付与した
ことを特徴とする同一方向二工程せん断穴あけ加工方
法。A first step of half-punching a workpiece, which is a workpiece, using a punch and a die;
And a second step of punching a workpiece from the same direction as above using a punch and a die. A method of forming a two-step shear hole in the same direction, wherein a roundness (R) for preventing the occurrence of cracks is provided.
を付与し且つ刃先に丸み（Ｒ）を付与した請求項１に記
載の加工方法。2. The processing method according to claim 1, wherein a taper is provided on a tip side of the punch in the first step and a roundness (R) is provided on a cutting edge.
５〜２．０ｍｍである請求項１又は２に記載の加工方
法。3. The radius of curvature of the roundness (R) of the cutting edge is 0.
The processing method according to claim 1, wherein the thickness is 5 to 2.0 mm.
第１工程のパンチ端面の径の方が若干大きい請求項１〜
３のいずれかに記載の加工方法。4. The diameter of the punch end face in the first step is slightly larger than the diameter of the punched hole of the die in the first step.
3. The processing method according to any one of 3.
刃先の丸み（Ｒ）より曲率半径が大きい丸み（Ｒ′）を
付与してなる請求項１〜４のいずれかに記載の加工方
法。5. The processing method according to claim 1, wherein a radius of curvature (R ′) having a larger radius of curvature than the radius (R) of the punch edge is provided to the die edge of the first step. .
第１工程のダイスの半抜き穴より大きな径のダイスを使
用してなる請求項１〜５のいずれかに記載の加工方法。6. The processing method according to claim 1, wherein the diameter of the hole of the die in the second step is larger than the diameter of the half hole of the die in the first step. .
工程のパンチと第２工程のダイスの抜き穴とのクリアラ
ンスが、第２工程で更に打ち抜くべきワ−ク板厚の＋４
％〜＋３５％となる径である請求項１〜６のいずれかに
記載の加工方法。7. The method according to claim 7, wherein the diameter of the punched hole of the die in the second step is the second.
The clearance between the punch in the process and the hole of the die in the second process is +4 of the work plate thickness to be further punched in the second process.
The processing method according to any one of claims 1 to 6, wherein the diameter has a diameter of% to + 35%.
８０％の打ち抜きである請求項１〜７のいずれかに記載
の加工方法。8. The half-blanked portion has a thickness of 25 to 25% of the work thickness.
The processing method according to claim 1, wherein the punching is performed by 80%.
イテン材である請求項１〜８のいずれかに記載の加工方
法。9. The processing method according to claim 1, wherein the work is a high-tensile material having a strength of 490 N / mm 2 or more.
したワークを位置決めしてなる請求項１〜９のいずれか
に記載の加工方法。10. The processing method according to claim 1, wherein in the second step, the workpiece half-cut in the first step is positioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10061527A JPH11254055A (en) | 1998-03-12 | 1998-03-12 | Method for shear-punching in two processes in same direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10061527A JPH11254055A (en) | 1998-03-12 | 1998-03-12 | Method for shear-punching in two processes in same direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11254055A true JPH11254055A (en) | 1999-09-21 |
Family
ID=13173676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10061527A Pending JPH11254055A (en) | 1998-03-12 | 1998-03-12 | Method for shear-punching in two processes in same direction |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11254055A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006080356A1 (en) * | 2005-01-25 | 2006-08-03 | Aisin Aw Co., Ltd. | Pressing mechine, pressing method, and punched article |
| JP2009255167A (en) * | 2008-03-24 | 2009-11-05 | Nippon Steel Corp | Blanking method and device using chamfered die |
| JP2009287082A (en) * | 2008-05-29 | 2009-12-10 | Jfe Steel Corp | Galvanized steel sheet, cutting processing method of the same, and die for cutting processing |
| JP4477695B1 (en) * | 2009-10-21 | 2010-06-09 | 有限会社オダ技商 | Pipe material groove forming method |
| CN102501267A (en) * | 2011-09-28 | 2012-06-20 | 苏州三维精密机械有限公司 | Machining process for through hole |
| JP2015098049A (en) * | 2013-11-20 | 2015-05-28 | 武蔵精密工業株式会社 | Hole formation method |
| CN109226461A (en) * | 2018-09-25 | 2019-01-18 | 靖江三鹏模具科技股份有限公司 | Quality ring close-range punching die and punching method |
| KR20230051772A (en) | 2020-08-17 | 2023-04-18 | 닛폰세이테츠 가부시키가이샤 | Artifacts and methods of manufacturing artefacts |
-
1998
- 1998-03-12 JP JP10061527A patent/JPH11254055A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006080356A1 (en) * | 2005-01-25 | 2006-08-03 | Aisin Aw Co., Ltd. | Pressing mechine, pressing method, and punched article |
| JPWO2006080356A1 (en) * | 2005-01-25 | 2008-08-07 | アイシン・エィ・ダブリュ株式会社 | Press processing device, press processing method, and punched product |
| JP2009255167A (en) * | 2008-03-24 | 2009-11-05 | Nippon Steel Corp | Blanking method and device using chamfered die |
| JP2009287082A (en) * | 2008-05-29 | 2009-12-10 | Jfe Steel Corp | Galvanized steel sheet, cutting processing method of the same, and die for cutting processing |
| JP4477695B1 (en) * | 2009-10-21 | 2010-06-09 | 有限会社オダ技商 | Pipe material groove forming method |
| JP2011088178A (en) * | 2009-10-21 | 2011-05-06 | Oda Gisho:Kk | Method for forming groove in pipe |
| CN102501267A (en) * | 2011-09-28 | 2012-06-20 | 苏州三维精密机械有限公司 | Machining process for through hole |
| JP2015098049A (en) * | 2013-11-20 | 2015-05-28 | 武蔵精密工業株式会社 | Hole formation method |
| CN109226461A (en) * | 2018-09-25 | 2019-01-18 | 靖江三鹏模具科技股份有限公司 | Quality ring close-range punching die and punching method |
| KR20230051772A (en) | 2020-08-17 | 2023-04-18 | 닛폰세이테츠 가부시키가이샤 | Artifacts and methods of manufacturing artefacts |
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