JPH024731Y2 - - Google Patents
Info
- Publication number
- JPH024731Y2 JPH024731Y2 JP12271785U JP12271785U JPH024731Y2 JP H024731 Y2 JPH024731 Y2 JP H024731Y2 JP 12271785 U JP12271785 U JP 12271785U JP 12271785 U JP12271785 U JP 12271785U JP H024731 Y2 JPH024731 Y2 JP H024731Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- flat
- protruding edge
- mold
- upper mold
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、二輪車、自動二種車その他のフレー
ムをパイプで構成するものにおいて、他の部材と
結合するために用いられるパイプの端部を、平坦
に押し潰して結合部を成形するための成形装置に
関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention is intended for use in motorcycles, second-class motor vehicles, and other vehicles in which the frame is made of pipes, and the ends of the pipes used to connect to other members. , relates to a molding device for molding a joint by flattening the joint.
（従来の技術）
第６図に示すように、従来のフレームパイプの
偏平な結合部２８は、両面が平面でパイプの内面
が完全に接触するように押し潰されていたため、
これに用いる金型も平らな作業面をもつものであ
つた。加工されるパイプは、引張り強度が40Kg／
mm2以下の冷間加工し易い材質のものであつた。(Prior Art) As shown in FIG. 6, the flat joint portion 28 of a conventional frame pipe was flat on both sides and was crushed so that the inner surfaces of the pipes were in complete contact with each other.
The mold used for this also had a flat working surface. The processed pipe has a tensile strength of 40 kg/
The material was easily cold-worked with a diameter of less than mm2 .
（考案が解決しようとする問題点）
近年、車両の軽量化を図るため、引張り強度40
〜60Kg／mm2又はそれ以上の強張力鋼からなる薄肉
管又は小径管を用いるようになつたが、かかる材
料を冷間で押し潰し加工をすると、第６図の屈曲
部２９，２９において亀裂が生じるおそれがあつ
た。そのため、屈曲部の曲率半径を大きくする必
要が生じ、本考案は、このような大きな曲率半径
をもつ中空の屈曲部の成形加工を可能とする金型
を得ることを目的とする。(Problem that the invention attempts to solve) In recent years, in order to reduce the weight of vehicles, tensile strength of 40
Thin-walled pipes or small-diameter pipes made of high-strength steel of ~60Kg/ mm2 or more have come to be used, but when such materials are cold crushed, cracks occur at the bends 29, 29 in Fig. 6. There was a risk that this would occur. Therefore, it is necessary to increase the radius of curvature of the bent portion, and the object of the present invention is to obtain a mold that enables molding of a hollow bent portion having such a large radius of curvature.
（問題点を解決するための手段）
本考案は、パイプを載置する平坦面３をもつ下
型１と、パイプ収容部４と該収容部４に続く平坦
な加圧面８を備えた上型とからなるフレームパイ
プの結合部成形装置において、上型の平坦な加圧
面８の両側に長手方向の中空突出縁成形用溝９，
９を設けたことによつて前記の目的を達すること
ができた。(Means for Solving the Problems) The present invention consists of a lower mold 1 having a flat surface 3 on which a pipe is placed, an upper mold having a pipe accommodating portion 4 and a flat pressurizing surface 8 continuing to the accommodating portion 4. In the frame pipe joint forming apparatus, a longitudinal hollow protruding edge forming groove 9 is provided on both sides of the flat pressurizing surface 8 of the upper mold.
9, the above objective could be achieved.
（作用）
上下の金型間でパイプＷの端部を挟圧すると、
パイプＷは、中間部分においては加圧面３，８で
扁平に押し潰されるが、中空突出縁成形用溝９，
９の部分では加圧力を受けないため、該溝９，９
内に中空状になつて押し込まれ、第５図に示すよ
うに曲率半径の大きい突出縁２５が成形される。(Function) When the end of the pipe W is compressed between the upper and lower molds,
The pipe W is flattened in the middle part by the pressure surfaces 3 and 8, but the hollow protruding edge forming groove 9,
Since the part 9 does not receive pressure, the grooves 9, 9
The protruding edge 25 with a large radius of curvature is formed as shown in FIG. 5.
（実施例）
図において、１は下型、２は上型で、下型１の
要部は横長の直方体をなし、平坦な上面３をも
ち、上型２は下型１に跨つて上下動できるように
コ字状をなし、その内面にパイプ収容部４とこれ
に続く加圧部５を備える。パイプ収容部４の幅
１は素材のパイプの直径Ｄとほぼ等しく、高さＨ
は約1.5Dである。この高さは、加圧部５に続く
部分で線６に示すように漸減させてもよいし線７
で示すように一定の高さであつてもよい。加圧部
５は、平坦な加圧面８とその両側の中空突出縁成
形用溝９とから成り、その幅2はパイプ素材Ｗ
を押し潰した後の幅と同一値であるが、パイプ収
容部４との接続部１０では適宜縮少される。突出
縁成形用溝９の幅及び深さは、突出縁２５，２５
が中空状すなわち細管状に成形されることができ
る寸法が必要であり、幅は素材Ｗの肉厚の３倍以
上、深さは２倍以上とすることが好適である。(Example) In the figure, 1 is a lower mold, 2 is an upper mold, the main part of the lower mold 1 forms a horizontally long rectangular parallelepiped, and has a flat upper surface 3, and the upper mold 2 straddles the lower mold 1 and moves up and down. It has a U-shape so as to be able to move freely, and has a pipe accommodating part 4 and a pressurizing part 5 following it on its inner surface. Width of pipe accommodating part 4
1 is approximately equal to the diameter D of the material pipe, and the height H
is approximately 1.5D. This height may be gradually decreased as shown by line 6 in the part following the pressurizing part 5, or may be reduced as shown by line 7.
It may be a constant height as shown in . The pressurizing part 5 consists of a flat pressurizing surface 8 and hollow protruding edge forming grooves 9 on both sides thereof, and its width 2 is made of a pipe material W.
The width is the same as the width after being crushed, but it is reduced appropriately at the connection part 10 with the pipe accommodating part 4. The width and depth of the protruding edge forming groove 9 are equal to the protruding edges 25, 25.
It is necessary to have dimensions that allow the material W to be formed into a hollow shape, that is, a thin tube shape, and it is preferable that the width be at least three times the thickness of the material W, and the depth be at least twice the thickness of the material W.
このような構成をもつから、上下の金型間でパ
イプＷの端部を挟圧すると、パイプＷは、中間部
分においては加圧面３，８で扁平に押し潰される
が、中空突出縁成形用溝９，９の部分では加圧力
を受けないため、該溝９，９内に中空状になつて
押し込まれ、第５図に示すように曲率半径の大き
い突出縁２５が成形される。すなわち、パイプ部
２０に続いて他物品を取付けるための拡がつた結
合部２１が形成され、この成形によつてパイプ素
材Ｗの中間部は結合部２１の変形に引かれて外径
が漸減すると共に、パイプ部２０の下面は平坦面
３で規制され、上面はパイプ収容部４の空間に臨
んでいるため、パイプ部２０は該室４内に入り込
み、パイプ部２０の下面は結合部２１の平坦な下
面２２と同一線上に置かれ、上面は、結合部２１
の上面２３及び突出縁２５に傾斜面２４をもつて
接続する。 Because of this structure, when the end of the pipe W is compressed between the upper and lower molds, the pipe W is flattened in the middle part by the pressure surfaces 3 and 8, but it is not suitable for forming hollow protruding edges. Since the grooves 9, 9 do not receive pressure, they are pushed into the grooves 9, 9 in a hollow shape, forming a protruding edge 25 with a large radius of curvature, as shown in FIG. That is, an expanding joint part 21 for attaching other articles is formed following the pipe part 20, and as a result of this forming, the outer diameter of the middle part of the pipe material W is gradually reduced by the deformation of the joint part 21. At the same time, the lower surface of the pipe section 20 is regulated by the flat surface 3, and the upper surface faces the space of the pipe accommodating section 4, so that the pipe section 20 enters the chamber 4, and the lower surface of the pipe section 20 is regulated by the connecting section 21. The upper surface is placed in line with the flat lower surface 22 and the connecting portion 21
It is connected to the upper surface 23 and the protruding edge 25 by an inclined surface 24.
前記の平坦な下面２２は、取付けられるべき他
部材に当接する面であり、孔２６を通るボルトに
よつて該他部材を固定する。 The flat lower surface 22 is a surface that comes into contact with another member to be attached, and the other member is fixed by a bolt passing through the hole 26.
一方、従来の金型では、第６図に示すように、
パイプ部２７に続く取付部２９は全く平坦に押潰
されて屈曲部２９の表面はパイプ肉厚を曲率半径
として折り曲げられているから、素材が強張力鋼
であると屈曲部２９に亀裂が入り易かつた。 On the other hand, in the conventional mold, as shown in Fig. 6,
The attachment part 29 following the pipe part 27 is flattened and the surface of the bent part 29 is bent with the radius of curvature equal to the thickness of the pipe, so if the material is high-tensile steel, the bent part 29 will crack. It was easy.
これに対し、本考案の金型を用いれば、曲率半
径の大きい突出縁が形成されるため成形時該突出
縁に亀裂が入らず、しかも突出縁が横方向に張り
出すため、コ字状形鋼におけるように横方向の曲
げに対して強い結合部を成形することができる。 On the other hand, if the mold of the present invention is used, a protruding edge with a large radius of curvature is formed, so no cracks occur in the protruding edge during molding, and the protruding edge protrudes laterally, resulting in a U-shaped shape. A joint that is strong against lateral bending can be formed as in steel.
（考案の効果）
本考案は、従来使用されていた金型に中空突出
縁成形用溝９，９を設けるだけの簡単な構成で、
曲率半径の大きい突出縁が形成されるため成形時
該突出縁に亀裂が入らず、しかも突出縁が横方向
に張り出すため、コ字状形鋼におけるように横方
向の曲げに対して強い結合部を成形することがで
き、かつ強張力鋼からなるパイプ素材を用いるこ
とができるからパイプフレームの軽量化にとつて
極めて有用である。(Effects of the invention) The present invention has a simple structure in which hollow protruding edge forming grooves 9, 9 are provided in a conventionally used mold.
Since a protruding edge with a large radius of curvature is formed, there will be no cracks in the protruding edge during forming, and since the protruding edge protrudes laterally, the bond is strong against lateral bending like in U-shaped steel. It is extremely useful for reducing the weight of the pipe frame because it can be molded and a pipe material made of high tensile steel can be used.
第１図ないし第４図は本願考案の実施例を示
し、第１図は正面図、第２図は第１図の−断
面図、第３図は第２図の−断面図、第４図は
第３図の−断面図であり、第５図ａ，ｂ，ｃ
は、本考案装置による製品の正面図、側面図及び
端面図、第６図は従来装置による製品図である。
１……下型、２……上型、３……平坦面、４…
…パイプ収容部、８……加圧面、９……中空突出
縁成形用溝。
1 to 4 show an embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a cross-sectional view of FIG. 1, FIG. 3 is a cross-sectional view of FIG. 2, and FIG. is a - sectional view of Fig. 3, and Fig. 5 a, b, c
6 is a front view, a side view, and an end view of a product manufactured by the device of the present invention, and FIG. 6 is a product view of a conventional device. 1...Lower mold, 2...Upper mold, 3...Flat surface, 4...
... Pipe housing section, 8 ... Pressure surface, 9 ... Hollow protruding edge forming groove.
Claims (1)
イプ収容部４と該収容部４に続く平坦な加圧面８
を備えた上型とからなるフレームパイプの結合部
成形装置において、上型の平坦な加圧面８の両側
に長手方向の中空突出縁成形用溝９，９を設けた
ことを特徴とするフレームパイプの結合部成形装
置。 A lower mold 1 having a flat surface 3 on which a pipe is placed, a pipe accommodating section 4, and a flat pressurizing surface 8 following the accommodating section 4.
A frame pipe joint forming apparatus comprising an upper mold having a frame pipe, characterized in that longitudinal hollow protruding edge forming grooves 9 are provided on both sides of a flat pressurizing surface 8 of the upper mold. joint forming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12271785U JPH024731Y2 (en) | 1985-08-12 | 1985-08-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12271785U JPH024731Y2 (en) | 1985-08-12 | 1985-08-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6234932U JPS6234932U (en) | 1987-03-02 |
| JPH024731Y2 true JPH024731Y2 (en) | 1990-02-05 |
Family
ID=31013171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12271785U Expired JPH024731Y2 (en) | 1985-08-12 | 1985-08-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH024731Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009022609A (en) * | 2007-07-20 | 2009-02-05 | Toa Sports Machine Inc | Pitching arm structure in pitching machine |
-
1985
- 1985-08-12 JP JP12271785U patent/JPH024731Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6234932U (en) | 1987-03-02 |
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