JP2004154802A - Forming method for integral type female screw part in press forming article - Google Patents

Forming method for integral type female screw part in press forming article Download PDF

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Publication number
JP2004154802A
JP2004154802A JP2002321528A JP2002321528A JP2004154802A JP 2004154802 A JP2004154802 A JP 2004154802A JP 2002321528 A JP2002321528 A JP 2002321528A JP 2002321528 A JP2002321528 A JP 2002321528A JP 2004154802 A JP2004154802 A JP 2004154802A
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JP
Japan
Prior art keywords
female screw
press
forming
cylindrical portion
screw portion
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
Application number
JP2002321528A
Other languages
Japanese (ja)
Inventor
Masayuki Yamaguchi
正幸 山口
Chisato Nakajo
千里 中條
Katsuo Takahashi
勝雄 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinwa Kogyo Inc
TAKAHASHI SEIMITSU KOGYO KK
Shinwa Industry Co Ltd
Original Assignee
Shinwa Kogyo Inc
TAKAHASHI SEIMITSU KOGYO KK
Shinwa Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shinwa Kogyo Inc, TAKAHASHI SEIMITSU KOGYO KK, Shinwa Industry Co Ltd filed Critical Shinwa Kogyo Inc
Priority to JP2002321528A priority Critical patent/JP2004154802A/en
Publication of JP2004154802A publication Critical patent/JP2004154802A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To secure strength of a female screw part which is integrally formed with a panel raw material without increasing thickness of the panel raw material to be press-worked. <P>SOLUTION: A forming method for the integral type female screw part forms the integral type female screw part integrated with a panel raw material 10 by press-working of the panel raw material 10 in a press-formed product. Compression workings are repeated in respective width and height directions of a cylindrical part 14 formed by drawing processing of the panel raw material 10. Thus, a wall of cylindrical part 14 is increased and then threading processing is executed to an inner periphery of the cylindrical part 14. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、鋼板などのパネル素材に対するプレス加工によって、このパネル素材と一体化された雌ネジ部を成形するための方法に関する。
【0002】
【従来の技術】
従来、例えば金属ブラケットに対し、これとは別部品をボルトで固定する場合に、このブラケットにナットを溶接している。一方、部品点数の削減などを目的として、ブラケットにバーリング加工(プレスによる絞り加工)を行い、これによって成形された筒部の内周にネジ切り加工(タッピング)を施し、ナットに代わる雌ネジ部をブラケットと一体に成形する技術も提案されている。
なお、バーリング加工によって二部品を一体的に結合する技術が、例えば非特許文献1に開示されている。
【0003】
【非特許文献1】
http://www.ai−link.ne.jp/free/products/kanagata/kakoujouhou/Br/br.htm
【0004】
【発明が解決しようとする課題】
従来の技術において、雌ネジ部を構成している筒部の壁厚は、ブラケットの板厚と同じか、バーリング加工時の絞り深さによってはブラケットの板厚より薄くなり、雌ネジ部の強度が低く、締結力に劣る。雌ネジ部の強度を確保するためにブラケットの板厚を大きくすると、コストならびに重量の増加につながる。
本発明は、従来の課題を解決しようとするもので、その目的は、プレス加工されるパネル素材の板厚を増やすことなく、このパネル素材と一体に成形される雌ネジ部の強度を確保することである。
【0005】
【課題を解決するための手段】
本発明は上記の目的を達成するためのもので、請求項1に記載の発明は、パネル素材のプレス加工により、このパネル素材と一体化された雌ネジ部を成形するためのプレス成形品における一体型雌ネジ部の成形方法であって、パネル素材を絞り加工することによって成形された円筒部に対し、その径方向および高さ方向のそれぞれに関して圧縮加工を繰り返すことにより、円筒部の壁を増肉した後、この円筒部内周にネジ切り加工を施す。
これにより、パネル素材の板厚を増やすことなく、雌ネジ部の強度を十分に確保してボルトなどとの締結力を保つことができる。
【0006】
請求項2に記載の発明は、請求項1に記載されたプレス成形品における一体型雌ネジ部の成形方法であって、パネル素材の絞り加工においては、この絞り加工によって成形される円筒部の絞り先端部分および根本部分のコーナをほぼ直角に成形する。
これにより、次工程での圧縮加工による円筒部の座屈や材料の逃げを防止し、壁の増肉を効果的に行うことができる。
【0007】
請求項3に記載の発明は、請求項1に記載されたプレス成形品における一体型雌ネジ部の成形方法であって、パネル素材の絞り加工においては、この絞り加工によって成形される円筒部の壁がパネル素材の板厚とほぼ等しい板厚に保たれるように、少なくとも絞り深さが設定されている。
これにより、圧縮加工における円筒部の壁の増肉が効率よく実施される。
【0008】
請求項4に記載の発明は、請求項1に記載されたプレス成形品における一体型雌ネジ部の成形方法であって、絞り加工によって成形された円筒部に対する圧縮加工では、この円筒部の根本部分をテーパー状に圧縮加工する。
このように円筒部の根本部分をテーパー状に圧縮加工することで、最終的に成形される雌ネジ部の強度が、より高められる。
【0009】
【発明の実施の形態】
以下、本発明の実施の形態を説明する。
図1〜図4は、プレス成形品における一体型雌ネジ部の成形工程を平面と断面との関連で表した説明図である。これらの図面において、各工程別に記載されているP1〜P36の連続番号は、工程(プロセス)番号である。なお、本実施の形態では、プレス成形の対象となるパネル素材10として、ロール状に巻かれた帯状の鋼板を用いている。そして各工程での加工品(以下、ワークとも称する)は、加工中においては個々に切り離されることなく、つながっている。
【0010】
図1で示す工程P1〜P3は、ワーク外形の抜き工程である。ただし、実際には工程P1〜3のいずれかでのみ、抜き加工を行っている。他の工程および工程P4は隣接する加工設備との干渉を避けるための遊び(アイドル)区間となっている。図1および図2で示す工程P5〜P14は、一体型雌ネジ部を成形するための絞り工程であり、全10工程に設定されている。なお、絞り加工も含めた以降の加工は、一つのワークについて二箇所となっている。
【0011】
図5は、絞り加工の最初の工程P5で加工されたワーク形状を表した断面図である。図6は、絞り加工の最後の工程P14で加工されたワーク形状を表した断面図である。図5で示すワーク形状における絞り込み部12は、図6で示す有底の円筒部14になる最初のもので、この円筒部14の板厚がパネル素材10の板厚よりも薄くならないように、絞り込み部12の形状、すなわちその外径D1や絞り深さH1が設定されている。ちなみに、パネル素材10の板厚は約1.2mm、外径D1は約46mm、絞り深さH1は約20mmである。
【0012】
図6で示す有底の円筒部14は、次工程の圧縮加工を適正に行うことができる形状に成形されている。すなわち、円筒部14の絞り深さH2は絞り込み部12の絞り深さH1と同じであるが、円筒部14の外径D2は絞り込み部12の外径D1よりも充分に小さく絞り込まれている。ちなみに、外径D2は約16.5mmである。また、円筒部14の絞り先端部分14aおよび根本部分14bにおけるそれぞれのコーナの角度は、ほぼ直角に設定されている。これにより、圧縮加工による円筒部14の座屈や材料の逃げを防止できる。この円筒部14を一度の絞り加工で成形するのが理想であるが、実際には無理があるので、全10工程で加工を行っている。
【0013】
図2で示す工程P15では、円筒部14における絞り先端部分14aの底板が打ち抜き加工される。そして、図2および図3で示す工程P16〜P24は、一体型雌ネジ部を成形するための圧縮工程である。図7は、圧縮加工の最初の工程P16で加工されたワーク形状を表した断面図である。このワーク形状における円筒部14は、その径方向および高さ方向(絞り深さ方向)のそれぞれに関して圧縮され、この加工により円筒部14の根本部分14bにおけるコーナ形状が確定される。ちなみに、外径D3は約14.4mm、高さ(絞り深さ)H3は約17.5mmである。
【0014】
図8は圧縮加工の工程P20で加工されたワーク形状を表した断面図である。この加工により、円筒部14は径方向および高さ方向に関してさらに圧縮され、円筒部14の壁が増肉されている。また、円筒部14の根本部分14bをテーパー形状にすることで、壁の増肉との相乗効果により、強度を高めている。なお図8における円筒部14は、その外径D4および高さH4共に約12mmである。
【0015】
図9は圧縮加工の工程P24で加工されたワーク形状を表した断面図である。この工程P24では、円筒部14がさらに圧縮され、次工程のネジ切り加工(タッピング)に最適な形状に加工される。図9における円筒部14の外径D5は約10.6mm、高さH5は約10mmである。
【0016】
図3および図4で示す工程P26〜P29は、円筒部14の内孔に対するネジ切り工程である。図10はネジ切り加工後のワーク形状を表した断面図であり、円筒部14の内孔にネジ部14cが加工されている。なお、プレス成形品の雌ネジ部となる円筒部14は、すでに説明したように一つのワークについて二個ずつあるので、これらの円筒部14に対するネジ切り加工を工程P27,P29において個別に行っている。そして、工程P28は、二つのタッピング設備が干渉するのを避けるための遊び(アイドル)である。したがって、タッピング設備が小型化されるとか、同時に二箇所のネジ切り加工が可能な設備があれば、工程P26〜P29を1工程に短縮することも可能である。
【0017】
図4で示す工程P29を過ぎた時点で、パネル素材10と一体化された雌ネジ部の成形が完了する。その後、図4の工程P31においてワーク外周のトリミング加工を行い、工程P33でワーク外周を立ち上げるエッジベンド加工を行っている。図11は、ベンド加工後のワーク形状を表した断面図である。この図面で示すようにパネル素材10のシャーエッジ部には、立ち上がり約5mmのベンド10aが成形されている。
【0018】
このように、円筒部14の壁を増肉した後にネジ部14cを加工して雌ネジ部を成形することにより、パネル素材10の板厚を増やすことなく、雌ネジ部の強度を高めることができる。また、円筒部14の壁を増肉するための圧縮加工においては、図8で示すように円筒部14の根本部分14bをテーパー状に成形することにより、最終的に成形される雌ネジ部の強度が一層高められる。
【図面の簡単な説明】
【図1】プレス成形品における一体型雌ネジ部の成形工程を表した説明図
【図2】プレス成形品における一体型雌ネジ部の成形工程を表した説明図
【図3】プレス成形品における一体型雌ネジ部の成形工程を表した説明図
【図4】プレス成形品における一体型雌ネジ部の成形工程を表した説明図
【図5】絞り加工の最初の工程で加工されたワーク形状を表した断面図
【図6】絞り加工の最後の工程で加工されたワーク形状を表した断面図
【図7】圧縮加工の最初の工程で加工されたワーク形状を表した断面図
【図8】圧縮加工の増肉加工後のワーク形状を表した断面図
【図9】圧縮加工の最後の工程で加工されたワーク形状を表した断面図
【図10】ネジ切り加工後のワーク形状を表した断面図
【図11】ベンド加工後のワーク形状を表した断面図
【符号の説明】
10 パネル素材
14 円筒部
14a 先端部分
14b 根本部分
14c ネジ部
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method for forming a female screw portion integrated with a panel material such as a steel plate by press working on the panel material.
[0002]
[Prior art]
Conventionally, a nut is welded to a metal bracket, for example, when another component is fixed to the metal bracket with bolts. On the other hand, for the purpose of reducing the number of parts, burring (pressing by pressing) is performed on the bracket, and threading (tapping) is performed on the inner periphery of the cylindrical part formed by this. There is also proposed a technique of integrally molding a bracket with a bracket.
A technique for integrally joining two parts by burring is disclosed in Non-Patent Document 1, for example.
[0003]
[Non-patent document 1]
http: // www. ai-link. ne. jp / free / products / kanagata / kakoujohou / Br / br. htm
[0004]
[Problems to be solved by the invention]
In the conventional technology, the wall thickness of the cylindrical portion forming the female screw portion is the same as the thickness of the bracket, or becomes thinner than the thickness of the bracket depending on the drawing depth at the time of burring, and the strength of the female screw portion is reduced. Low, and inferior in fastening strength. Increasing the thickness of the bracket in order to secure the strength of the female screw portion leads to an increase in cost and weight.
An object of the present invention is to solve the conventional problems, and an object of the present invention is to secure the strength of a female screw portion formed integrally with a panel material without increasing the thickness of the panel material to be pressed. That is.
[0005]
[Means for Solving the Problems]
The present invention is to achieve the above object, and the invention according to claim 1 is a press-formed product for forming a female screw portion integrated with the panel material by pressing the panel material. A method of forming an integrated female screw portion, wherein a cylindrical portion formed by drawing a panel material is repeatedly subjected to compression processing in each of its radial direction and height direction to form a wall of the cylindrical portion. After the wall thickness is increased, the inner periphery of the cylindrical portion is subjected to thread cutting.
Thereby, the strength of the female screw portion can be sufficiently secured and the fastening force with the bolt or the like can be maintained without increasing the thickness of the panel material.
[0006]
According to a second aspect of the present invention, there is provided a method for forming an integrated female screw portion in a press-formed product according to the first aspect, wherein in the drawing of a panel material, a cylindrical portion formed by the drawing is formed. The corners of the drawing tip and the root are formed at substantially right angles.
Thus, buckling of the cylindrical portion and escape of the material due to the compression processing in the next step can be prevented, and the wall thickness can be effectively increased.
[0007]
According to a third aspect of the present invention, there is provided a method of forming an integrated female screw portion in a press-formed product according to the first aspect, wherein in the drawing of a panel material, a cylindrical portion formed by the drawing is formed. At least the drawing depth is set so that the wall is maintained at a thickness substantially equal to the thickness of the panel material.
Thereby, the wall thickness of the wall of the cylindrical portion in the compression processing is efficiently performed.
[0008]
According to a fourth aspect of the present invention, there is provided a method for forming an integral female screw portion in a press-formed product according to the first aspect, wherein the compression of a cylindrical portion formed by drawing is performed at the root of the cylindrical portion. The part is compressed into a tapered shape.
By compressing the root portion of the cylindrical portion into a tapered shape in this manner, the strength of the finally formed female screw portion is further increased.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
FIG. 1 to FIG. 4 are explanatory views showing a forming process of an integrated female screw portion in a press-formed product in relation to a plane and a cross section. In these drawings, the serial numbers of P1 to P36 described for each step are step (process) numbers. In the present embodiment, a strip-shaped steel plate wound into a roll is used as the panel material 10 to be subjected to press forming. Processed products (hereinafter, also referred to as workpieces) in each step are connected without being cut off individually during processing.
[0010]
Steps P1 to P3 shown in FIG. 1 are punching steps of the work outer shape. However, the punching is actually performed only in any one of the processes P1 to P3. The other steps and step P4 are idle (idle) sections to avoid interference with adjacent processing equipment. Steps P5 to P14 shown in FIGS. 1 and 2 are drawing steps for forming an integrated female screw portion, and are set to a total of 10 steps. In addition, the subsequent processing including the drawing processing is performed at two places for one work.
[0011]
FIG. 5 is a cross-sectional view illustrating the shape of the work processed in the first step P5 of the drawing. FIG. 6 is a cross-sectional view illustrating the shape of the workpiece processed in the last step P14 of the drawing. The narrowed portion 12 in the work shape shown in FIG. 5 is the first one to become the bottomed cylindrical portion 14 shown in FIG. 6, and the thickness of the cylindrical portion 14 is not thinner than the thickness of the panel material 10. The shape of the narrowing portion 12, that is, the outer diameter D1 and the narrowing depth H1 are set. Incidentally, the thickness of the panel material 10 is about 1.2 mm, the outer diameter D1 is about 46 mm, and the drawing depth H1 is about 20 mm.
[0012]
The bottomed cylindrical portion 14 shown in FIG. 6 is formed in a shape that can appropriately perform compression processing in the next step. In other words, the drawing depth H2 of the cylindrical portion 14 is the same as the drawing depth H1 of the narrowing portion 12, but the outer diameter D2 of the cylindrical portion 14 is narrowed sufficiently smaller than the outer diameter D1 of the narrowing portion 12. Incidentally, the outer diameter D2 is about 16.5 mm. Also, the angles of the corners at the narrowed end portion 14a and the root portion 14b of the cylindrical portion 14 are set to be substantially right angles. Thereby, it is possible to prevent the buckling of the cylindrical portion 14 and the escape of the material due to the compression processing. Ideally, the cylindrical portion 14 is formed by a single drawing process. However, in reality, it is impossible to form the cylindrical portion 14, so that the processing is performed in all 10 steps.
[0013]
In a step P15 shown in FIG. 2, the bottom plate of the drawing tip portion 14a of the cylindrical portion 14 is punched. Steps P16 to P24 shown in FIGS. 2 and 3 are compression steps for forming the integrated female screw portion. FIG. 7 is a cross-sectional view illustrating the shape of the work processed in the first step P16 of the compression processing. The cylindrical portion 14 in this work shape is compressed in each of the radial direction and the height direction (drawing depth direction), and the corner shape of the root portion 14b of the cylindrical portion 14 is determined by this processing. Incidentally, the outer diameter D3 is about 14.4 mm, and the height (drawing depth) H3 is about 17.5 mm.
[0014]
FIG. 8 is a cross-sectional view illustrating the shape of the workpiece processed in the compression processing step P20. By this processing, the cylindrical portion 14 is further compressed in the radial direction and the height direction, and the wall of the cylindrical portion 14 is thickened. Further, by forming the root portion 14b of the cylindrical portion 14 in a tapered shape, the strength is increased by a synergistic effect with the wall thickness increase. The outer diameter D4 and height H4 of the cylindrical portion 14 in FIG. 8 are both about 12 mm.
[0015]
FIG. 9 is a cross-sectional view illustrating the shape of the work processed in the compression processing step P24. In this step P24, the cylindrical portion 14 is further compressed, and is processed into a shape optimal for threading (tapping) in the next step. The outer diameter D5 of the cylindrical portion 14 in FIG. 9 is about 10.6 mm, and the height H5 is about 10 mm.
[0016]
Steps P26 to P29 shown in FIGS. 3 and 4 are thread cutting steps for the inner hole of the cylindrical portion 14. FIG. 10 is a cross-sectional view illustrating the shape of the workpiece after the thread cutting process. The threaded portion 14 c is formed in the inner hole of the cylindrical portion 14. As described above, since there are two cylindrical portions 14 serving as female screw portions of the press-formed product for one work, threading processing for these cylindrical portions 14 is individually performed in steps P27 and P29. I have. The process P28 is a play (idle) for avoiding interference between the two tapping facilities. Therefore, if the tapping equipment is reduced in size, or if there is equipment capable of simultaneously performing thread cutting at two locations, the steps P26 to P29 can be reduced to one step.
[0017]
When the process P29 shown in FIG. 4 has passed, the forming of the female screw portion integrated with the panel material 10 is completed. After that, the outer periphery of the work is trimmed in a step P31 in FIG. FIG. 11 is a cross-sectional view illustrating a work shape after the bend processing. As shown in this drawing, a bend 10a having a rise of about 5 mm is formed on the shear edge portion of the panel material 10.
[0018]
In this manner, by increasing the wall thickness of the cylindrical portion 14 and then forming the female screw portion by processing the screw portion 14c, the strength of the female screw portion can be increased without increasing the thickness of the panel material 10. it can. In the compression process for increasing the thickness of the wall of the cylindrical portion 14, the root portion 14b of the cylindrical portion 14 is formed into a tapered shape as shown in FIG. Strength is further increased.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a forming process of an integrated female screw portion in a press-formed product. FIG. 2 is an explanatory diagram showing a forming process of an integrated female screw portion in a press-formed product. FIG. 4 is an explanatory view showing a forming process of an integrated female screw portion. FIG. 4 is an explanatory diagram showing a forming process of an integrated female screw portion in a press-formed product. FIG. 5 is a work shape processed in a first process of drawing. FIG. 6 is a cross-sectional view showing the shape of a workpiece processed in the last step of drawing. FIG. 7 is a cross-sectional view showing the shape of a workpiece processed in the first step of compression. FIG. 9 is a cross-sectional view showing the shape of the work after the thickness increase processing of the compression processing. FIG. 9 is a cross-sectional view showing the shape of the work processed in the final step of the compression processing. FIG. 11 shows the shape of the workpiece after bend processing. Rear view DESCRIPTION OF SYMBOLS
10 Panel material 14 Cylindrical part 14a Tip part 14b Root part 14c Screw part

Claims (4)

パネル素材のプレス加工により、このパネル素材と一体化された雌ネジ部を成形するための方法であって、パネル素材を絞り加工することによって成形された円筒部に対し、その径方向および高さ方向のそれぞれに関して圧縮加工を繰り返すことにより、円筒部の壁を増肉した後、この円筒部内周にネジ切り加工を施すことを特徴としたプレス成形品における一体型雌ネジ部の成形方法。A method for forming a female screw portion integrated with the panel material by pressing the panel material, wherein the cylindrical portion formed by drawing the panel material has a radial direction and a height. A method for forming an integrated female screw portion in a press-formed product, wherein after increasing the wall thickness of a cylindrical portion by repeating compression processing in each of the directions, threading is performed on the inner periphery of the cylindrical portion. 請求項1に記載されたプレス成形品における一体型雌ネジ部の成形方法であって、パネル素材の絞り加工においては、この絞り加工によって成形される円筒部の絞り先端部分および根本部分のコーナをほぼ直角に成形することを特徴としたプレス成形品における一体型雌ネジ部の成形方法。A method for forming an integrated female screw portion in a press-formed product according to claim 1, wherein, in drawing of a panel material, a corner of a drawing tip portion and a root portion of a cylindrical portion formed by the drawing process is formed. A method for forming an integral female screw portion in a press-formed product, wherein the integrated female screw portion is formed substantially at right angles. 請求項1に記載されたプレス成形品における一体型雌ネジ部の成形方法であって、パネル素材の絞り加工においては、この絞り加工によって成形される円筒部の壁がパネル素材の板厚とほぼ等しい板厚に保たれるように、少なくとも絞り深さが設定されていることを特徴としたプレス成形品における一体型雌ネジ部の成形方法。A method for forming an integrated female screw portion in a press-formed product according to claim 1, wherein, in the drawing of the panel material, the wall of the cylindrical portion formed by the drawing is substantially equal to the thickness of the panel material. A method of forming an integrated female screw portion in a press-formed product, wherein at least a drawing depth is set so as to maintain an equal plate thickness. 請求項1に記載されたプレス成形品における一体型雌ネジ部の成形方法であって、絞り加工によって成形された円筒部に対する圧縮加工では、この円筒部の根本部分をテーパー状に圧縮加工することを特徴としたプレス成形品における一体型雌ネジ部の成形方法。2. A method for forming an integrated female screw portion in a press-formed product according to claim 1, wherein, in the compression processing on the cylindrical portion formed by drawing, the root portion of the cylindrical portion is compressed into a tapered shape. A method for forming an integral female screw portion in a press-formed product, characterized by the following.
JP2002321528A 2002-11-05 2002-11-05 Forming method for integral type female screw part in press forming article Pending JP2004154802A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100893014B1 (en) * 2007-09-13 2009-04-10 윤정록 Tap plate and method of manufacturing of tap plate
JP2012037705A (en) * 2010-08-06 2012-02-23 Sanko:Kk Manufacturing method of female screw part for camera tripod
US8409021B2 (en) 2009-11-12 2013-04-02 Iwai Metal (America) Co., Ltd. Method for manufacturing fitting including blind nut and tap tool for use in this method
KR101251043B1 (en) 2012-03-30 2013-04-05 프로텍코리아 주식회사 Tap plate manufacturing method and its apparutus
CN105107919A (en) * 2015-09-25 2015-12-02 上海永太汽车零部件厂 Continuous drawing device and sheet nut stamped part manufacturing device and method
WO2018038317A1 (en) * 2016-08-23 2018-03-01 주식회사 초이스툴링 Tapping plate manufacturing apparatus and tapping plate manufacturing method using same
KR20200076277A (en) * 2018-12-19 2020-06-29 (주)탑아이엔디 Door hinge mounting bracket and a manufacturing method thereof
CN113245463A (en) * 2020-02-12 2021-08-13 A.雷蒙德公司 Method for producing a workpiece

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100893014B1 (en) * 2007-09-13 2009-04-10 윤정록 Tap plate and method of manufacturing of tap plate
US8409021B2 (en) 2009-11-12 2013-04-02 Iwai Metal (America) Co., Ltd. Method for manufacturing fitting including blind nut and tap tool for use in this method
JP2012037705A (en) * 2010-08-06 2012-02-23 Sanko:Kk Manufacturing method of female screw part for camera tripod
KR101251043B1 (en) 2012-03-30 2013-04-05 프로텍코리아 주식회사 Tap plate manufacturing method and its apparutus
CN105107919A (en) * 2015-09-25 2015-12-02 上海永太汽车零部件厂 Continuous drawing device and sheet nut stamped part manufacturing device and method
CN105107919B (en) * 2015-09-25 2017-06-16 上海永太汽车零部件厂 Continuous drawing device, sheet metal nut pressing product manufacturing equipment and manufacture method
WO2018038317A1 (en) * 2016-08-23 2018-03-01 주식회사 초이스툴링 Tapping plate manufacturing apparatus and tapping plate manufacturing method using same
KR20200076277A (en) * 2018-12-19 2020-06-29 (주)탑아이엔디 Door hinge mounting bracket and a manufacturing method thereof
KR102159808B1 (en) * 2018-12-19 2020-09-24 (주)탑아이엔디 Manufacturing method of Door hinge mounting bracket
CN113245463A (en) * 2020-02-12 2021-08-13 A.雷蒙德公司 Method for producing a workpiece

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