JPH03204123A - Manufacture of flange member - Google Patents
Manufacture of flange memberInfo
- Publication number
- JPH03204123A JPH03204123A JP34176989A JP34176989A JPH03204123A JP H03204123 A JPH03204123 A JP H03204123A JP 34176989 A JP34176989 A JP 34176989A JP 34176989 A JP34176989 A JP 34176989A JP H03204123 A JPH03204123 A JP H03204123A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical part
- cylindrical
- flange
- temporary
- manufacturing
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 31
- 238000000034 method Methods 0.000 claims description 37
- 238000000748 compression moulding Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000010409 ironing Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000000137 annealing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、板材を成形して、筒状部の一端側に、筒状部
の肉厚より小さい肉厚のフランジ部を有するフランジ部
材を製造するためのフランジ部材の製造方法に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention provides a flange member that is formed by molding a plate material and has a flange portion having a wall thickness smaller than the wall thickness of the cylindrical portion on one end side of the cylindrical portion. The present invention relates to a method for manufacturing a flange member.
〔従来の技術］
従来、筒状部の一端側に、筒状部の肉厚より小さい肉厚
のフランジ部を有するフランジ部材を製造する方法とし
て以下に述べる方法が知られている。[Prior Art] Conventionally, the method described below is known as a method for manufacturing a flange member having a flange portion having a wall thickness smaller than the wall thickness of the cylindrical portion on one end side of the cylindrical portion.
第１の方法は、板材を、絞り成形あるいはバーリング成
形し、第１４図に示すように、筒状部１１を形成し、こ
の後、第１５図に示すように、パンチ１３．１５により
、筒状部１１およびフランジ部１７を圧縮成形し、筒状
部１１の肉厚を増大する方法である。In the first method, a plate material is drawn or burred to form a cylindrical part 11 as shown in FIG. 14, and then, as shown in FIG. This is a method of compression molding the shaped part 11 and the flange part 17 to increase the wall thickness of the cylindrical part 11.
第２の方法は、板材を、絞り成形あるいはバーリング成
形し、第１６図に示すように、筒状部１９を形成し、こ
の後、第１７図に示すように、フランジ部２１を圧縮成
形し、フランジ部２１の肉厚を減少する方法である。In the second method, a plate material is drawn or burred to form a cylindrical portion 19 as shown in FIG. 16, and then a flange portion 21 is compression molded as shown in FIG. This is a method of reducing the wall thickness of the flange portion 21.
第３の方法は、第１８図に示すように、棒状の素材２３
を鍛造成形し、順次フランジ部２５．２７．２９を成形
して行く方法である。The third method is to use a rod-shaped material 23 as shown in FIG.
This method involves forging and forming the flange portions 25, 27, and 29 in sequence.
しかしながら、第１の方法では、板材の絞り成形あるい
はバーリング成形の時に、既に筒状部１１とフランジ部
１７との接続部３１の内側に成形工程での欠肉部３３が
生じていたり、筒状部１１の形状および肉厚の適正な前
提条件を設定することが困難であるため、筒状部１１を
軸方向に圧縮しても、筒状部１１の座屈が発生したり、
均一な肉厚の円筒厚肉部を成形することや、欠肉部３３
に充分に素材を供給することが困難になるという問題が
あり実用的でなかった。However, in the first method, when drawing or burring the plate material, a lack of thickness 33 is already formed inside the connecting part 31 between the cylindrical part 11 and the flange part 17 during the forming process, and the cylindrical Since it is difficult to set appropriate preconditions for the shape and wall thickness of the portion 11, buckling of the cylindrical portion 11 may occur even if the cylindrical portion 11 is compressed in the axial direction.
It is possible to form a cylindrical thick-walled part with uniform wall thickness, or to form a thick-walled part 33
It was not practical due to the problem that it was difficult to supply enough material to the machine.
また、第２の方法では、フランジ部２１のコイニングに
非常に大きな加圧力が必要なため、プレス機械も金型も
大型化し、製造コストが増大するという問題があった。Further, in the second method, since a very large pressing force is required for coining the flange portion 21, there is a problem that the press machine and the mold become large-sized, resulting in an increase in manufacturing cost.
また、フランジ部２１を圧縮する力が、筒状部１９に達
する前に、摩擦により損失し、筒状部１９に充分な力を
作用することが困難であり、筒状部１９の厚肉化が不十
分になるという問題があった。In addition, the force that compresses the flange portion 21 is lost due to friction before reaching the cylindrical portion 19, making it difficult to apply sufficient force to the cylindrical portion 19, and making the cylindrical portion 19 thicker. There was a problem that it was insufficient.
さらに、第３の方法では、冷間鍛造法であるため、ボス
部３５の寸法は自由になるが、成形荷重が大きく、また
、中間工程において焼鈍と潤滑処理が必要になるという
問題があった。Furthermore, in the third method, since it is a cold forging method, the dimensions of the boss portion 35 can be set freely, but there are problems in that the forming load is large and annealing and lubrication treatment are required in intermediate steps. .
本発明は、上記のような問題を解決したもので、筒状部
を座屈させることなく、低荷重および少工数で筒状部の
肉厚を効果的に増大することのできるフランジ部材の製
造方法を提供することを目的とする。The present invention solves the above-mentioned problems, and it is possible to manufacture a flange member that can effectively increase the wall thickness of a cylindrical part with low load and a small number of man-hours without buckling the cylindrical part. The purpose is to provide a method.
請求項１のフランジ部材の製造方法は、板材を成形して
、筒状部の一端側に、筒状部の肉厚より小さい肉厚のフ
ランジ部を有するフランジ部材を製造するためのフラン
ジ部材の製造方法において、前記板材に、筒状部の最終
外径より大きい外径を有する仮筒状部を形成した後、こ
の仮筒状部を、曲面またはテーパ状の導入部に押し込む
ことにより縮径成形させ、筒状部および筒状部とフラン
ジ部との接続部の肉厚を増大形成するものである。A method for manufacturing a flange member according to claim 1 is a method of manufacturing a flange member for manufacturing a flange member having a flange portion having a wall thickness smaller than the wall thickness of the cylindrical portion on one end side of the cylindrical portion by molding a plate material. In the manufacturing method, after forming a temporary cylindrical part having an outer diameter larger than the final outer diameter of the cylindrical part in the plate material, the diameter of the temporary cylindrical part is reduced by pushing the temporary cylindrical part into a curved surface or a tapered introduction part. The thickness of the cylindrical portion and the connecting portion between the cylindrical portion and the flange portion is increased by molding.
請求項２のフランジ部材の製造方法は、筒状部の他端側
に押圧力を作用させた状態で縮径成形を行ない、筒状部
とフランジ部との接続部の肉厚を増大形成するものであ
る。The method for manufacturing a flange member according to claim 2 includes performing diameter reduction forming while applying a pressing force to the other end of the cylindrical portion to increase the thickness of the connection portion between the cylindrical portion and the flange portion. It is something.
請求項３のフランジ部材の製造方法は、接続部の圧縮成
形時に、接続部をフランジ部から突出して形成し、この
突出部をさらに圧縮成形するものである。In the method for manufacturing a flange member according to a third aspect of the present invention, the connecting portion is formed to protrude from the flange portion during compression molding of the connecting portion, and this protruding portion is further compression molded.
請求項４のフランジ部材の製造方法は、筒状部内径をし
ごき加工することにより、フランジ部と筒状部との接続
部の欠肉を減少させ、かつ、筒状部内径の精度を向上さ
せるものである。The method for manufacturing a flange member according to claim 4 reduces the lack of thickness at the connection portion between the flange portion and the cylindrical portion and improves the accuracy of the cylindrical portion inner diameter by ironing the cylindrical portion inner diameter. It is something.
請求項１のフランジ部材の製造方法では、筒状部の最終
外径より大きい外径を有する仮筒状部を縮径成形すると
、仮筒状部の内側が空洞となっているため、仮筒状部に
圧縮応力が作用し、肉厚が増大する。In the method for manufacturing a flange member according to claim 1, when the temporary cylindrical part having an outer diameter larger than the final outer diameter of the cylindrical part is diameter-reduced, the inner side of the temporary cylindrical part is hollow, so that the temporary cylindrical part becomes hollow. Compressive stress acts on the shaped part and the wall thickness increases.
請求項２のフランジ部材の製造方法では、請求項１にお
いて、筒状部の他端側に押圧力を作用させた状態で縮径
成形を行なうため、特に、筒状部とフランジ部との接続
部の肉厚が増大形成される。In the method for manufacturing a flange member according to claim 2, in claim 1, the diameter reduction forming is performed while applying a pressing force to the other end side of the cylindrical portion, so that the connection between the cylindrical portion and the flange portion is particularly reduced. The wall thickness of the part is increased.
請求項３のフランジ部材の製造方法では、請求項１また
は２において、フランジ部および接続部の圧縮成形時に
、接続部をフランジ部から突出して形成し、この突出部
をさらに圧縮成形するので、接続部に充分素材を供給で
き、接続部に生じる欠肉が少なくなる。In the method for manufacturing a flange member according to claim 3, in claim 1 or 2, when the flange portion and the connecting portion are compression-molded, the connecting portion is formed to protrude from the flange portion, and this protruding portion is further compression-molded. Enough material can be supplied to the joints, reducing the amount of underfill that occurs at the joints.
請求項４のフランジ部材の製造方法では、筒状部内径を
しごき加工することにより、フランジ部と筒状部との接
続部の欠肉が減少され、かつ、筒状部内径の精度が向上
される。In the method for manufacturing a flange member according to claim 4, by ironing the inner diameter of the cylindrical part, the lack of thickness at the connection part between the flange part and the cylindrical part is reduced, and the accuracy of the inner diameter of the cylindrical part is improved. Ru.
以下、本発明方法の詳細を図面を用いて説明する。 Hereinafter, details of the method of the present invention will be explained using the drawings.
本発明のフランジ部材の製造方法では、先ず、第１図に
示すように、板材４１にブランキングが行なわれ、板材
４１の板厚が均一に成形される。In the method for manufacturing a flange member of the present invention, first, as shown in FIG. 1, blanking is performed on the plate material 41, so that the plate material 41 has a uniform thickness.
この後、第２図および第３図に示すように、２工程をか
けて絞り成形が行なわれ突出部４３，４５が形成される
。Thereafter, as shown in FIGS. 2 and 3, drawing is performed in two steps to form the protrusions 43, 45.
この後、第４図に示すように、突出部４５の底部４７が
ピアス加工により打ち抜かれ、一端側にフランジ部４９
を有する仮筒状部５１が形成される。After this, as shown in FIG. 4, the bottom part 47 of the protruding part 45 is punched out by piercing, and a flange part 49
A temporary cylindrical portion 51 is formed.
この仮筒状部５１は、最終的に形成すべき筒状部の最終
外径りより大きい外径Ｄ１とされる。This temporary cylindrical portion 51 has an outer diameter D1 larger than the final outer diameter of the cylindrical portion to be finally formed.
なお、仮筒状部５１の形成は、バーリング加工により形
成しても良く、また、絞り成形の回数も２回に限られる
ものではない。Note that the temporary cylindrical portion 51 may be formed by burring, and the number of times of drawing is not limited to two.
この後、第５図に示すように、仮筒状部５１が、肉厚が
増大するように縮径成形される。Thereafter, as shown in FIG. 5, the temporary cylindrical portion 51 is formed to reduce its diameter so that its wall thickness increases.
すなわち、この縮径成形は、第６図に示すように、Ｒ状
のアプローチ部５３を有するダイ５５に仮筒状部５１を
押し込むことにより行なわれ、仮筒状部５１の外径がり
、からＤ２に縮径される。That is, as shown in FIG. 6, this diameter reduction molding is performed by pushing the temporary cylindrical part 51 into a die 55 having an R-shaped approach part 53, and the outer diameter of the temporary cylindrical part 51 is reduced. The diameter is reduced to D2.
そして、この時に、仮筒状部５１の内径側が空洞になっ
ているため、仮筒状部５１に圧縮応力が作用し、板厚が
増大する。At this time, since the inner diameter side of the temporary cylindrical part 51 is hollow, compressive stress acts on the temporary cylindrical part 51, and the plate thickness increases.
この実施例では、カウンターパンチ５７により、仮筒状
部５１の他端側に、常時押圧力を作用させた状態で縮径
成形を行なっているため、仮筒状部５１および仮筒状部
５１とフランジ部４９との接続部５９の肉厚を有効に増
大形成することが可能になる。In this embodiment, the counter punch 57 performs diameter reduction molding with a constant pressing force applied to the other end of the temporary cylindrical portion 51. This makes it possible to effectively increase the thickness of the connecting portion 59 between the flange portion 49 and the flange portion 49.
また、この実施例では、アプローチ部５３の平均角度θ
を、縮径成形により仮筒状部５１の非拘束部が座屈を生
じない程度に大きく、例えば、３０度から６０度の角度
範囲内に設定しているため、仮筒状部５１への圧縮応力
が大きくなり、特に、アプローチ部５３に位置する接続
部５９の肉厚を有効に増大形成することが可能になる。Further, in this embodiment, the average angle θ of the approach portion 53
is set to be large enough to prevent the unrestricted portion of the temporary cylindrical portion 51 from buckling due to diameter reduction molding, for example, within the angular range of 30 degrees to 60 degrees, so that the The compressive stress increases, and in particular, it becomes possible to effectively increase the thickness of the connecting portion 59 located at the approach portion 53.
さらに、この実施例のようにカウンターパンチ５７のス
トロークエンドでブロック５６に突き当て、筒状部５１
とフランジ部４９との接続部５９の肉厚を有効に増大形
成することも可能である。Furthermore, as in this embodiment, the stroke end of the counter punch 57 abuts against the block 56, and the cylindrical portion 51
It is also possible to effectively increase the thickness of the connecting portion 59 between the flange portion 49 and the flange portion 49 .
なお、第６図において、符号６１はパンチを示しており
、図の左側は、成形前の状態を、右側は成形後の状態を
示している。In FIG. 6, reference numeral 61 indicates a punch, and the left side of the figure shows the state before molding, and the right side shows the state after molding.
この後、第７図に示すように、フランジ部４９および筒
状部６３が圧縮成形される。Thereafter, as shown in FIG. 7, the flange portion 49 and the cylindrical portion 63 are compression molded.
すなわち、最初の圧縮成形では、第７図に示すように、
フランジ部４９および筒状部６３の圧縮成形時に、フラ
ンジ部４９から突出して突出部６５が形成される。That is, in the first compression molding, as shown in FIG.
During compression molding of the flange portion 49 and the cylindrical portion 63, a protruding portion 65 is formed to protrude from the flange portion 49.
この圧縮成形は、第８図に示すように、パンチ６７の角
部に逃げ用の凹部６９を形成したパンチ６７を使用して
行なわれる。This compression molding is carried out using a punch 67 having relief recesses 69 formed at the corners of the punch 67, as shown in FIG.
このように突出部６５を形成することにより、接続部７
１の外側部７３に素材が重なることを有効に防止でき、
また、次に述べる圧縮成形において、筒状部６３からフ
ランジ部４９への素材流出を有効に防止することが可能
になる。By forming the protruding portion 65 in this way, the connecting portion 7
It is possible to effectively prevent materials from overlapping on the outer part 73 of 1,
Further, in compression molding described below, it becomes possible to effectively prevent material from flowing out from the cylindrical portion 63 to the flange portion 49.
なお、第７図において、符号７５はダイを、符号７７は
カウンターパンチを示しており、また、図の左側は、成
形前の状態を、右側は成形後の状態を示している。In FIG. 7, reference numeral 75 indicates a die, and reference numeral 77 indicates a counter punch, and the left side of the figure shows the state before molding, and the right side shows the state after molding.
この後、第９図に示すように、フランジ部４９および筒
状部６３が、さらに圧縮成形され、筒状部７９が形成さ
れる。Thereafter, as shown in FIG. 9, the flange portion 49 and the cylindrical portion 63 are further compression molded to form the cylindrical portion 79.
この圧縮成形は、第１０図に示すように、逃げ用の凹部
の形成されないパンチ８１を使用して行なわれ、突出部
６５が平坦に加工される。As shown in FIG. 10, this compression molding is performed using a punch 81 that does not have a relief recess, and the protrusion 65 is processed to be flat.
この圧縮成形により、接続部８３の内側部８５の欠肉が
減少されるが、この時点では、筒状部７９の肉厚はほぼ
最終の肉厚となっているため、筒状部７９が座屈を起こ
すことはない。This compression molding reduces the lack of thickness in the inner part 85 of the connecting part 83, but at this point, the thickness of the cylindrical part 79 is almost the final thickness, so the cylindrical part 79 is seated. It doesn't cause any bending.
なお、第１０図において、図の左側は、成形前の状態を
、右側は成形後の状態を示している。In addition, in FIG. 10, the left side of the figure shows the state before molding, and the right side shows the state after molding.
この後、第１１図に示すように、矢符Ｗ方向にしごき加
工が行なわれ、接続部８７の内側部８９の欠肉が減少さ
れ、かつ、筒状部９１内径の精度が向上し、成形が終了
し、筒状部９１の肉厚がフランジ部４９の肉厚より充分
に大きい、筒状部９１の外径がＤであるフランジ部材９
３が得られる。Thereafter, as shown in FIG. 11, ironing is carried out in the direction of arrow W to reduce the lack of thickness in the inner part 89 of the connecting part 87, improve the accuracy of the inner diameter of the cylindrical part 91, and improve the forming process. is completed, the wall thickness of the cylindrical portion 91 is sufficiently larger than the wall thickness of the flange portion 49, and the outer diameter of the cylindrical portion 91 is D.
3 is obtained.
なお、上記実施例において、第６図の６２のマンドレル
、第８図の６８のマンドレル、第１０図の７０のマンド
レルなしで成形する、または、極端に細くすることによ
り、しごき量を増大させ、８９の欠肉をさらに減少する
ことも可能である。In addition, in the above embodiments, the amount of ironing is increased by forming without the mandrel 62 in FIG. 6, the mandrel 68 in FIG. 8, and the mandrel 70 in FIG. 10, or by making it extremely thin. It is also possible to further reduce the amount of underfill of 89.
また、この実施例では、第１１図の綱線部の体積■は、
第４図に示した網線部の体積■、と路間一体積になって
いる。In addition, in this embodiment, the volume ■ of the cable wire portion in FIG. 11 is
The volume of the mesh line portion shown in FIG.
以上述べたような本発明のフランジ部材の製造方法によ
れば、第４図に示したように、板材４１に、筒状部９１
の最終外径りより大きい外径Ｄ１を有する仮筒状部５１
を形成した後、この仮筒状部５１を、第５図に示したよ
うに、肉厚が増大するように縮径成形するようにしたの
で、仮筒状部５１を縮径成形すると、仮筒状部５１の内
側が空゛洞となっているため、仮筒状部５１に圧縮応力
が作用し、肉厚が増大することになり、仮筒状部５１を
座屈させることなく、低荷重および少工数で筒状部９１
の肉厚を効果的に増大することが可能になる。According to the method for manufacturing a flange member of the present invention as described above, as shown in FIG.
Temporary cylindrical portion 51 having an outer diameter D1 larger than the final outer diameter of
After forming the temporary cylindrical part 51, the diameter of the temporary cylindrical part 51 is reduced so that the wall thickness increases as shown in FIG. Since the inner side of the cylindrical part 51 is hollow, compressive stress acts on the temporary cylindrical part 51, and the wall thickness increases. Cylindrical part 91 with less load and less man-hours
It becomes possible to effectively increase the wall thickness.
ちなみに、従来の第２および第３の方法では、フランジ
部のアプセット荷重が、フランジ部の外径１００ｍｍ、
筒状部の外径２５ｍｍの時には、５５０ｔｆであり、フ
ランジ部の外径１５０ｍｍ、筒状部の外径２５ＩＩＩＩ
１１の時には、１２５０ｔｆであったが、上述した実施
例の場合には、例えば、第９図に示した圧縮成形時のア
プセット荷重を、両者ともに８０ｔｆに低減することが
できた。By the way, in the conventional second and third methods, the upset load of the flange part is 100 mm in outer diameter of the flange part,
When the outer diameter of the cylindrical part is 25 mm, it is 550 tf, and the outer diameter of the flange part is 150 mm, and the outer diameter of the cylindrical part is 25III.
11, it was 1250 tf, but in the case of the above-mentioned example, for example, the upset load during compression molding shown in FIG. 9 could be reduced to 80 tf in both cases.
また、本発明のフランジ部材の製造方法では、第６図に
示したように、仮筒状部５１の他端側に押圧力を作用さ
せた状態で縮径成形を行なうため、特に、仮筒状部５１
とフランジ部４９との接続部５９の肉厚が増大形成され
、この後、第９図に示したように、フランジ部４９およ
び筒状部６３を圧縮成形すると、接続部８３に充分素材
を供給でき、接続部８３に生じる欠肉を少なくすること
が可能になる。In addition, in the method for manufacturing a flange member of the present invention, as shown in FIG. shaped part 51
The wall thickness of the connecting part 59 between the flange part 49 and the flange part 49 is increased, and then, as shown in FIG. This makes it possible to reduce the amount of underfill that occurs in the connecting portion 83.
さらに、フランジ部４９および筒状部６３の圧縮成形時
に、第７図に示したように、接続部７１をフランジ部４
９から突出して形成し、この突出部６５を、第９図に示
したように、さらに圧縮成形するので、接続部８３に充
分素材を供給でき、接続部８３に生じる欠肉を少なくす
ることが可能になる。Furthermore, during compression molding of the flange portion 49 and the cylindrical portion 63, as shown in FIG.
9, and this protrusion 65 is further compression-molded as shown in FIG. It becomes possible.
また、上述した実施例では、第１１図に示したように、
しごき加工をしたので、接続部８７の内側部８９の欠肉
を低減することができる。Furthermore, in the embodiment described above, as shown in FIG.
Since the ironing process is performed, it is possible to reduce the lack of thickness in the inner part 89 of the connecting part 87.
なお、以上述べた実施例では、第６図に示したアプロー
チ部５３をＲ状に形成した例について述べたが、本発明
はかかる実施例に限定されるものではなく、例えば、テ
ーパー状に形成しても良いことは勿論である。In addition, in the embodiment described above, an example was described in which the approach portion 53 shown in FIG. Of course, it is okay to do so.
また、以上述べた実施例では、仮筒状部５１をストレー
トの円筒状に形成した例について述べたが、本発明はか
かる実施例に限定されるものではなく、例えば、第１２
図に示すように、仮筒状部９５を円錐状に形成しても良
く、また、第１３図に示すよ５に、仮筒状部９７を半球
状に形成しても良いことは勿論である。Further, in the embodiment described above, an example was described in which the temporary cylindrical portion 51 was formed into a straight cylindrical shape, but the present invention is not limited to such an embodiment.
As shown in the figure, the temporary cylindrical part 95 may be formed into a conical shape, and it goes without saying that the temporary cylindrical part 97 may be formed into a hemispherical shape as shown in FIG. be.
以上述べたように、請求項１のフランジ部材の製造方法
では、筒状部の最終外径より大きい外径を有する仮筒状
部を縮径成形すると、仮筒状部の内側が空洞となってい
るため、仮筒状部に圧縮応力が作用し、肉厚が増大する
ため、筒状部を座屈させることなく、低荷重および少工
数で筒状部の肉厚を効果的に増大することができる。As described above, in the method for manufacturing a flange member according to claim 1, when the temporary cylindrical part having an outer diameter larger than the final outer diameter of the cylindrical part is diameter-reduced, the inside of the temporary cylindrical part becomes hollow. Because of this, compressive stress acts on the temporary cylindrical part and increases the wall thickness, so the wall thickness of the cylindrical part can be effectively increased with low load and small man-hours without buckling the cylindrical part. be able to.
請求項２のフランジ部材の製造方法では、請求項１ムこ
おいて、筒状部の他端側に押圧力を作用させた状態で縮
径成形を行なうため、特に、筒状部とフランジ部との接
続部の肉厚を増大形成することができる。In the method for manufacturing a flange member according to claim 2, in accordance with claim 1, the diameter reduction forming is performed with a pressing force being applied to the other end of the cylindrical portion, so that the flange member and the flange member are particularly formed. The thickness of the connecting portion can be increased.
請求項３のフランジ部材の製造方法では、請求項１また
は２において、フランジ部および接続部の圧縮成形時に
、接続部をフランジ部から突出して形成し、この突出部
をさらに圧縮成形するので、接続部に充分素材を供給で
き、接続部に生じる欠肉を少なくすることができる。In the method for manufacturing a flange member according to claim 3, in claim 1 or 2, when the flange portion and the connecting portion are compression-molded, the connecting portion is formed to protrude from the flange portion, and this protruding portion is further compression-molded. It is possible to supply sufficient material to the joints, and to reduce the amount of underfill that occurs at the joints.
請求項４のフランジ部材の製造方法では、筒状部内径を
しごき加工するので、フランジ部と筒状部との接続部の
欠肉が減少され、かつ、筒状部内径の精度が向上される
という利点がある。In the method for manufacturing a flange member according to claim 4, since the inner diameter of the cylindrical portion is ironed, underfilling of the connection portion between the flange portion and the cylindrical portion is reduced, and the accuracy of the inner diameter of the cylindrical portion is improved. There is an advantage.
第１図はブランキングされた板材を示す説明図である。
第２図および第３図は絞り加工された板材を示す説明図
である。
第４図は第３図の突出部をピアス成形した状態を示す説
明図である。
第５図は第４図の筒状部を縮径成形した状態を示す説明
図である。
第６図は縮径成形に使用される金型を示す説明図である
。
第７図は第５図の筒状部を圧縮成形した状態を示す説明
図である。
第８図は圧縮成形に使用される金型を示す説明図である
。
第９図は第７図の筒状部をさらに圧縮成形した状態を示
す説明図である。
第１０図は第９図の圧縮成形に使用される金型を示す説
明図である。
第１Ｉ図は第９図の筒状部の内径をしごき加工した状態
を示す説明図である。
第１２図および第１３図は仮筒状部の他の形状例を示す
説明図である。
第１４図ないし第１８図は従来のフランジ部材の製造方
法を示す説明図である。
〔主要な部分の符号の説明］
４１・・・板材
４９・・・フランジ部
５１・・・仮筒状部
６５・・・突出部
９１・・・筒状部。
第１図
第２図
３
第４図
ノ
第８図
第
７
図
第
図
第
２
図
第
３
図
第
０
図
第
５
図
第
４
図
第１６ Ｗｌ
１
第
７
図
第１８FIG. 1 is an explanatory diagram showing a blanked plate material. FIGS. 2 and 3 are explanatory diagrams showing drawn plate materials. FIG. 4 is an explanatory diagram showing a state in which the protrusion shown in FIG. 3 has been pierce-molded. FIG. 5 is an explanatory diagram showing a state in which the cylindrical portion of FIG. 4 has been formed to reduce its diameter. FIG. 6 is an explanatory diagram showing a mold used for diameter reduction molding. FIG. 7 is an explanatory diagram showing a state in which the cylindrical portion of FIG. 5 has been compression molded. FIG. 8 is an explanatory diagram showing a mold used for compression molding. FIG. 9 is an explanatory diagram showing a state in which the cylindrical portion of FIG. 7 has been further compression molded. FIG. 10 is an explanatory diagram showing a mold used for the compression molding of FIG. 9. FIG. 1I is an explanatory diagram showing a state in which the inner diameter of the cylindrical portion of FIG. 9 has been ironed. FIGS. 12 and 13 are explanatory diagrams showing other examples of shapes of the temporary cylindrical portion. FIGS. 14 to 18 are explanatory diagrams showing a conventional method of manufacturing a flange member. [Description of symbols of main parts] 41...Plate material 49...Flange portion 51...Temporary cylindrical portion 65...Protrusion portion 91...Cylindrical portion. Figure 1 Figure 2 Figure 3 Figure 4 Figure 8 Figure 7 Figure Figure 2 Figure 3 Figure 0 Figure 5 Figure 4 Figure 16 Wl 1 Figure 7 Figure 18
Claims (4)
厚より小さい肉厚のフランジ部を有するフランジ部材を
製造するためのフランジ部材の製造方法において、前記
板材に、筒状部の最終外径より大きい外径を有する仮筒
状部を形成した後、この仮筒状部を、曲面またはテーパ
状の導入部に押し込むことにより縮径成形させ、筒状部
および筒状部とフランジ部との接続部の肉厚を増大形成
することを特徴とするフランジ部材の製造方法。(1) In a method for manufacturing a flange member for manufacturing a flange member having a flange portion having a wall thickness smaller than the wall thickness of the cylindrical portion on one end side of the cylindrical portion by forming a plate material, the plate material includes: After forming a temporary cylindrical part having an outer diameter larger than the final outer diameter of the cylindrical part, this temporary cylindrical part is pressed into a curved surface or a tapered introduction part to form a diameter reduction, thereby forming a cylindrical part and a tube. A method of manufacturing a flange member, comprising increasing the thickness of a connecting portion between a shaped portion and a flange portion.
成形を行ない、筒状部とフランジ部との接続部の肉厚を
増大形成することを特徴とする請求項１記載のフランジ
部材の製造方法。(2) Diameter reduction forming is performed while applying a pressing force to the other end of the cylindrical portion to increase the thickness of the connection portion between the cylindrical portion and the flange portion. A method of manufacturing the described flange member.
突出して形成し、この突出部をさらに圧縮成形すること
を特徴とする請求項１または２記載のフランジ部材の製
造方法。(3) The method for manufacturing a flange member according to claim 1 or 2, wherein the connecting portion is formed to protrude from the flange portion during compression molding of the connecting portion, and this protruding portion is further compression molded.
ジ部と筒状部との接続部の欠肉を減少させ、かつ、筒状
部内径の精度を向上させることを特徴とする請求項１な
いし３記載の何れか１項記載のフランジ部材の製造方法
。(4) By ironing the inner diameter of the cylindrical part, underfilling of the connection part between the flange part and the cylindrical part is reduced, and the accuracy of the inner diameter of the cylindrical part is improved. 4. The method for manufacturing a flange member according to any one of items 3 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1341769A JPH0832351B2 (en) | 1989-12-29 | 1989-12-29 | Method for manufacturing flange member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1341769A JPH0832351B2 (en) | 1989-12-29 | 1989-12-29 | Method for manufacturing flange member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03204123A true JPH03204123A (en) | 1991-09-05 |
| JPH0832351B2 JPH0832351B2 (en) | 1996-03-29 |
Family
ID=18348623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1341769A Expired - Lifetime JPH0832351B2 (en) | 1989-12-29 | 1989-12-29 | Method for manufacturing flange member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0832351B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009099019A1 (en) * | 2008-02-05 | 2009-08-13 | Daikin Industries, Ltd. | Piping-member manufacturing method |
| JP2012206150A (en) * | 2011-03-30 | 2012-10-25 | Aida Engineering Ltd | Press molding method and device |
| CN102905811A (en) * | 2009-09-14 | 2013-01-30 | 麦格纳国际公司 | Component, especially control arm for a vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62290804A (en) * | 1986-04-11 | 1987-12-17 | インコ、アロイス、インタ−ナシヨナル インコ−ポレ−テツド | Apparatus and method for producing pipe by powder metallurgy |
-
1989
- 1989-12-29 JP JP1341769A patent/JPH0832351B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62290804A (en) * | 1986-04-11 | 1987-12-17 | インコ、アロイス、インタ−ナシヨナル インコ−ポレ−テツド | Apparatus and method for producing pipe by powder metallurgy |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009099019A1 (en) * | 2008-02-05 | 2009-08-13 | Daikin Industries, Ltd. | Piping-member manufacturing method |
| JP2009183973A (en) * | 2008-02-05 | 2009-08-20 | Daikin Ind Ltd | Method of manufacturing piping member |
| JP4586855B2 (en) * | 2008-02-05 | 2010-11-24 | ダイキン工業株式会社 | Manufacturing method of piping members |
| CN102905811A (en) * | 2009-09-14 | 2013-01-30 | 麦格纳国际公司 | Component, especially control arm for a vehicle |
| JP2013504436A (en) * | 2009-09-14 | 2013-02-07 | マグナ インターナショナル インコーポレイテッド | Components, especially vehicle control arms |
| JP2012206150A (en) * | 2011-03-30 | 2012-10-25 | Aida Engineering Ltd | Press molding method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0832351B2 (en) | 1996-03-29 |
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