JPS6150056B2 - - Google Patents
Info
- Publication number
- JPS6150056B2 JPS6150056B2 JP56070441A JP7044181A JPS6150056B2 JP S6150056 B2 JPS6150056 B2 JP S6150056B2 JP 56070441 A JP56070441 A JP 56070441A JP 7044181 A JP7044181 A JP 7044181A JP S6150056 B2 JPS6150056 B2 JP S6150056B2
- Authority
- JP
- Japan
- Prior art keywords
- bending
- cam
- mold
- die
- main
- 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
- 238000005452 bending Methods 0.000 claims description 80
- 238000009957 hemming Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
- B21D39/021—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Description
【発明の詳細な説明】 本発明はヘミングプレス用型に関する。[Detailed description of the invention] The present invention relates to a mold for a hemming press.
ヘミングプレス用型の従来例を第１図に示す
と、上型１に予備曲げ用のセクシヨナルダイ２と
本曲げ用のセクシヨナルダイ３を取付け、上型１
を下降させることにより先ず予備曲げ用のセクシ
ヨナルダイ２でワークの縁を所定の角度に予備曲
げ（プリヘム）し、次に本曲げ用のセクシヨナル
ダイ３によつてワークの縁を完全に折曲げ（ヘ
ム）るようになつている。 A conventional example of a die for hemming press is shown in Fig. 1.A sectional die 2 for preliminary bending and a sectional die 3 for main bending are attached to an upper die 1.
By lowering the sectional die 2, the edge of the workpiece is first pre-bent at a predetermined angle (pre-hem), and then the edge of the workpiece is completely bent (hemmed) by the sectional die 3 for main bending. It is becoming more and more like this.
すなわち、従来のこのヘミングプレス用型に
は、上型１に予備曲げ用のセクシヨナルダイ２を
取付けるに際しホルダー本体４ａと、コイルスプ
リング等の弾性体４ｂとからなるフローテイング
ホルダー４を使用して上型１の矢印で示す移動方
向と同方向にスライドするように取付け、予備曲
げしたのちに予備曲げ用のセクシヨナルダイ２が
上型１の下降方向とは正反対の方向に逃げるよう
にしていた。 That is, in this conventional hemming press die, when attaching the sectional die 2 for pre-bending to the upper die 1, a floating holder 4 consisting of a holder body 4a and an elastic body 4b such as a coil spring is used. It was mounted so as to slide in the same direction as the moving direction indicated by the arrow 1, and after pre-bending, the sectional die 2 for pre-bending escaped in the direction opposite to the downward direction of the upper die 1.
なお、図面中５は下型、６はドアアウターパネ
ル、６ａはこのドアアウターパネル６のフラン
ジ、７はドアアウターパネル６に結合されるドア
インナーパネルである。 In the drawing, 5 is a lower mold, 6 is a door outer panel, 6a is a flange of this door outer panel 6, and 7 is a door inner panel that is coupled to the door outer panel 6.
ここで、上記従来例のヘミングプレス用型の欠
点を述べると、
(1) プリヘム用のセクシヨナルダイ２がフランジ
６ａに当る巾Ｗの部分と両セクシヨナル２，３
間のクリアランスになる部分は本曲げ用のセク
シヨナルダイ３で押せないために第２図に示す
如くフランジ６ａの端部に膨み部６ｂが生じて
しまう。一般的にヘミング加工されたワークは
次の工程で第２図に示したＡ部分がスポツト溶
接されることが多いが、この膨み部６ｂはスポ
ツト溶接によつて生ずべきナゲツトが不完全に
なつたりするために歪ができたり、あるいは製
品として使用しているときに膨み部６ｂに水が
入るなどして発錆や腐触の原因になる。 Here, the drawbacks of the conventional hemming press mold described above are as follows: (1) The sectional die 2 for pre-hem has a width W that touches the flange 6a and both sectionals 2 and 3.
Since the clearance between the two parts cannot be pressed by the sectional die 3 for final bending, a bulge 6b is formed at the end of the flange 6a as shown in FIG. Generally, in the next process of hemmed workpieces, part A shown in Fig. 2 is often spot welded, but this bulge 6b is caused by incomplete nuggets that should be formed by spot welding. This may cause distortion due to the bending, or water may enter the swollen portion 6b during use as a product, causing rust or corrosion.
(2) 膨み部６ｂを小さくするためには予備曲げ用
のセクシヨナルダイ２のフランジ６ａに当る巾
Ｗを少なくすればよいがこのようにすると予備
曲げ時にフランジ６ａが逆折れしたりするた
め、巾Ｗを少なくするのには限度がある。(2) In order to make the bulge 6b smaller, the width W that touches the flange 6a of the sectional die 2 for pre-bending can be reduced, but if you do this, the flange 6a may bend backwards during pre-bending, so the width should be reduced. There is a limit to how much W can be reduced.
本発明は上記の欠点を解決することを目的と
し、予備曲げするときにワークのフランジが折曲
げられる方向と同方向に加工型を移動させる構造
として、ワークのフランジの膨み部の形成を無く
すと共に逆折れを防ぐことを特徴とする。 The present invention aims to solve the above-mentioned drawbacks and eliminates the formation of a bulge on the flange of the workpiece by moving the processing die in the same direction as the direction in which the flange of the workpiece is bent during preliminary bending. It is also characterized by preventing reverse bending.
以下に本発明の一実施例を第３図〜第５図に従
つて説明する。 An embodiment of the present invention will be described below with reference to FIGS. 3 to 5.
８は下型で、この下型８の一側部には摺動面９
ａを備えた予備曲げ用ドライブカム９をウエアプ
レート１０を介して摺動可能に設けてあり、他側
部には摺動面１１ａを備えた本曲げ用ドライブカ
ム１１が設けてある。また、本曲げ用ドライブカ
ム１１の摺動面１１ａと反対側の面にはワークセ
ツト面１２が逆向きに形成してある。 8 is a lower mold, and one side of this lower mold 8 has a sliding surface 9.
A pre-bending drive cam 9 with a sliding surface 11a is provided on the other side, and a main-bending drive cam 11 with a sliding surface 11a is provided on the other side. Further, a work setting surface 12 is formed in the opposite direction on the surface of the drive cam 11 for main bending opposite to the sliding surface 11a.
予備曲げ用ドライブカム９の摺動面９ａはワー
クセツト面１２と同一方向でしかも平行な斜面と
しておく。予備曲げ用ドライブカム９は、ウレタ
ン等の弾性体１３により付勢されており通常はス
トツパー１４に押付けられている。 The sliding surface 9a of the pre-bending drive cam 9 is a slope parallel to and in the same direction as the work setting surface 12. The pre-bending drive cam 9 is biased by an elastic body 13 made of urethane or the like, and is normally pressed against a stopper 14.
１５は上型で、ウエアプレート１６を介してス
ライドカム１７が摺動可能に取付けられ、このス
ライドカム１７の一側部には、上記予備曲げ用ド
ライブカム９の摺動面９ａに対向する予備曲げ用
カム面１８と上記本曲げ用ドライブカム１１の摺
動面１１ａに対向する本曲げ用カム面１９が設け
てある。 Reference numeral 15 denotes an upper die, on which a slide cam 17 is slidably attached via a wear plate 16. On one side of the slide cam 17, there is a spare die facing the sliding surface 9a of the drive cam 9 for pre-bending. A main bending cam surface 19 is provided which faces the bending cam surface 18 and the sliding surface 11a of the main bending drive cam 11.
またスライドカム１７の他側部には加工型２０
があり、この加工型２０には予備曲げ用型面２１
と本曲げ用型面２２とが一体的に形成されてい
る。 In addition, a processing die 20 is provided on the other side of the slide cam 17.
This processing die 20 has a preliminary bending die surface 21.
and the main bending mold surface 22 are integrally formed.
そして上記スライドカム１７はスプリング等の
弾性体２３によつて上記弾性体１３の付勢方向と
反対の方向に付勢され、端部は通常はストツパー
２４に当接している。 The slide cam 17 is biased by an elastic body 23 such as a spring in a direction opposite to the direction in which the elastic body 13 is biased, and its end portion normally abuts against a stopper 24 .
なお、弾性体１３の弾発力は弾性体２３のそれ
より充分に強いものとしておく。 Note that the elastic force of the elastic body 13 is made sufficiently stronger than that of the elastic body 23.
図面中６はワークの例であるドアアウターパネ
ル、６ａはこのドアアウターパネル６のフラン
ジ、７はドアアウターパネル６と一体に結合する
べき例えばドアインナーパネルである。 In the drawing, 6 is a door outer panel as an example of a workpiece, 6a is a flange of this door outer panel 6, and 7 is, for example, a door inner panel to be integrally combined with the door outer panel 6.
次に上記構成による本発明の作用を説明する。 Next, the operation of the present invention with the above configuration will be explained.
上型１５が下降すると、すなわち上・下型１
５，８が接近すると、まず予備曲げ用カム面１８
が下型８の予備曲げ用ドライブカム９の摺動面９
ａに当接し、弾性体２３は圧縮されつつスライド
カム１７は予備曲げ用ドライブカム９に駆動さ
れ、その摺動面９ａに従つて下降する。このとき
第３図に示す如く加工型２０の予備曲げ用型面２
１がドアアウターパネル６のフランジ６ａに当接
し、上型１５の下降に伴ない、予備曲げ用型面２
１はフランジ６ａの曲折方向に移動しながらフラ
ンジ６ａの予備曲げを行なう。 When the upper mold 15 descends, that is, the upper and lower molds 1
When 5 and 8 approach, first the preliminary bending cam surface 18
is the sliding surface 9 of the drive cam 9 for preliminary bending of the lower mold 8
a, the elastic body 23 is compressed, and the slide cam 17 is driven by the pre-bending drive cam 9 and descends along its sliding surface 9a. At this time, as shown in FIG.
1 comes into contact with the flange 6a of the door outer panel 6, and as the upper mold 15 descends, the preliminary bending mold surface 2
1 performs preliminary bending of the flange 6a while moving in the bending direction of the flange 6a.
さらに、上型１５の下降が進むと、第４図に示
す如く本曲げ用カム面１９は下型８の本曲げ用ド
ライブカム１１の摺動面１１ａに摺接し始め、ス
ライドカム１７は本曲げ用ドライブカム１１に駆
動され弾性体１３を圧縮しながら予備曲げ用ドラ
イブカム９を移動させて摺動面９ａに沿つて移動
する。このため、本曲げ用型面２２はフランジ６
ａに当接して本曲げを始める。 Further, as the upper mold 15 continues to descend, the main bending cam surface 19 begins to come into sliding contact with the sliding surface 11a of the main bending drive cam 11 of the lower mold 8, as shown in FIG. The pre-bending drive cam 9 is driven by the pre-bending drive cam 11 while compressing the elastic body 13 and moves along the sliding surface 9a. Therefore, the mold surface 22 for main bending is the flange 6
When it comes into contact with point a, the final bending begins.
そこで、一層上型１５の下降が進むと第５図に
示す如く予備曲げ用ドライブカム９は予備曲げ用
カム面１８に押されてさらに弾性体１３を押圧し
ながら後退し、それによつて本曲げ用カム面１９
が本曲げ用ドライブカム１１の摺動面１１ａを摺
動して本曲げ用型面２２はフランジ６ａを本曲げ
する方向に移動して本曲げ加工を行なう。 Therefore, as the upper mold 15 continues to descend further, the pre-bending drive cam 9 is pushed by the pre-bending cam surface 18 and moves back while further pressing the elastic body 13, as shown in FIG. cam surface 19
slides on the sliding surface 11a of the drive cam 11 for final bending, and the die surface 22 for final bending moves in the direction of final bending the flange 6a, thereby performing the final bending process.
以上の順序でヘミング加工が完了した上型１５
は上昇し、スライドカム１７は弾性体２３によつ
て元の位置に復帰して次の作業にそなえ、下型８
の予備曲げ用ドライブカム９も弾性体１３によつ
て復帰して次の作業にそなえる。 Upper mold 15 after hemming process was completed in the above order
is raised, and the slide cam 17 is returned to its original position by the elastic body 23 in preparation for the next operation, and the lower mold 8
The pre-bending drive cam 9 is also returned by the elastic body 13 to prepare for the next operation.
なお、本実施例においては、ワークセツト面１
２と予備曲げ用ドライブカム９の摺動面９ａとの
傾斜角度を同一のものとしたが、これは設計上の
便宜を図つて予備曲げ時に加工型２０とワークセ
ツト面１２とが干渉しない最良の手段として同一
の傾斜角度としたものであり、本発明においては
これに限定されず上記摺動面９ａとワークセツト
面１２は必ずしも同一の傾斜角でなくてもよい。 In addition, in this embodiment, the work set surface 1
2 and the sliding surface 9a of the pre-bending drive cam 9 are made to have the same inclination angle, but for convenience of design, this is the best way to prevent interference between the processing die 20 and the workpiece set surface 12 during pre-bending. However, the present invention is not limited to this, and the sliding surface 9a and the workpiece setting surface 12 do not necessarily have to have the same inclination angle.
以上の構成、作用を有する本発明によると、予
備曲げ用型面によつて予備曲げを行なう際に予備
曲げ用型面を有する加工型はフランジの折曲方向
と同方向にスライドカムによつて移動するためフ
ランジの逆折れを防ぐことができると共に折曲線
で確実に折曲することができてふくらみを起すこ
ともない。さらに予備曲げ用型面と本曲げ用型面
とが連続して形成してありしかも連続的に予備曲
げと本曲げを行なうために両加工の間にワークに
スプリングバツクが起ることもなく、かつフラン
ジ全面が完全に折曲されて精度が高まる。 According to the present invention having the above configuration and operation, when performing preliminary bending using the pre-bending die surface, the processing die having the pre-bending die surface is moved by the slide cam in the same direction as the bending direction of the flange. Since it moves, it is possible to prevent reverse bending of the flange, and it is also possible to reliably bend the flange along the folding line without causing any bulges. Furthermore, since the preliminary bending mold surface and the main bending mold surface are formed continuously, and the preliminary bending and the final bending are performed continuously, there is no spring back in the workpiece between the two processes. In addition, the entire surface of the flange is completely bent, increasing precision.
第１図は従来例の正面断面図、第２図は従来例
の装置によるヘミング加工を行なつたワークの要
部拡大断面図、第３図は本発明の一実施例を示す
正面断面図、第４図および第５図は作動状態を示
す正面断面図である。
８……下型、９……予備曲げ用ドライブカム、
１０……ウエアプレート、１１……本曲げ用ドラ
イブカム、１２……ワークセツト面、１３……弾
性体、１５……上型、１７……スライドカム、１
８……予備曲げ用カム面、１９……本曲げ用カム
面、２０……加工型、２１……予備曲げ用型面、
２２……本曲げ用型面、２３……弾性体。
FIG. 1 is a front sectional view of a conventional example, FIG. 2 is an enlarged sectional view of a main part of a workpiece subjected to hemming using a conventional device, and FIG. 3 is a front sectional view showing an embodiment of the present invention. 4 and 5 are front sectional views showing the operating state. 8...Lower die, 9...Drive cam for preliminary bending,
10... Wear plate, 11... Drive cam for final bending, 12... Work set surface, 13... Elastic body, 15... Upper die, 17... Slide cam, 1
8... Cam surface for preliminary bending, 19... Cam surface for main bending, 20... Processing die, 21... Mold surface for preliminary bending,
22...Mold surface for main bending, 23...Elastic body.
Claims (1)
ドカムを取付け、このスライドカムに予備曲げ用
型面と本曲げ用型面とを連続して一体に形成した
加工型を取付け、同スライドカムに予備曲げ用カ
ム面とこの予備曲げ用カム面と逆向きの本曲げ用
カム面とを設け、一方下型には上記予備曲げ用カ
ム面に対向する予備曲げ用ドライブカムを上記弾
性体よりも強い別の弾性体によりスライドカムと
は逆の方向に付勢し、さらに下型に上記本曲げ用
カム面に対向する本曲げ用ドライブカムを固定
し、上下型を接近することにより予備曲げ用カム
面を予備曲げ用ドライブカムに摺接させてスライ
ドカムを予備曲げ用カム面と平行に駆動して、加
工型の予備曲げ用型面により下型にセツトしたワ
ークに予備曲げを行ない、その後本曲げ用カム面
を本曲げ用ドライブカムに摺接させて上記別の弾
性体を圧縮して予備曲げ用ドライブカムを後退さ
せながらスライドカムを本曲げ用カム面と平行に
駆動して本曲げ用型面によつて上記ワークに本曲
げを行なうようにしたことを特徴とするヘミング
プレス用型。1. Attach a slide cam to the upper mold by biasing it in one direction with an elastic body, attach a processing mold in which a mold surface for preliminary bending and a mold surface for main bending are continuously and integrally formed to this slide cam, and press the same slide. The cam is provided with a cam surface for pre-bending and a cam surface for main bending that faces opposite to the cam surface for pre-bending, and a drive cam for pre-bending opposite to the cam surface for pre-bending is provided on the lower die, and the elastic body is provided with a drive cam for pre-bending that faces the cam surface for pre-bending. The main bending drive cam facing the main bending cam surface is fixed to the lower mold by another elastic body stronger than the slide cam, and the upper and lower molds are moved closer to each other to create a reserve. The bending cam surface is brought into sliding contact with the pre-bending drive cam, the slide cam is driven parallel to the pre-bending cam surface, and the workpiece set in the lower die is pre-bended by the pre-bending die surface of the processing die. Then, the main bending cam surface is brought into sliding contact with the main bending drive cam, compressing the above-mentioned separate elastic body, and driving the slide cam parallel to the main bending cam surface while retracting the preliminary bending drive cam. A mold for a hemming press, characterized in that a final bending mold surface is used to perform final bending on the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7044181A JPS57184520A (en) | 1981-05-11 | 1981-05-11 | Die for hemming press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7044181A JPS57184520A (en) | 1981-05-11 | 1981-05-11 | Die for hemming press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57184520A JPS57184520A (en) | 1982-11-13 |
| JPS6150056B2 true JPS6150056B2 (en) | 1986-11-01 |
Family
ID=13431577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7044181A Granted JPS57184520A (en) | 1981-05-11 | 1981-05-11 | Die for hemming press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57184520A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5778700A (en) * | 1999-06-29 | 2001-01-31 | Ronald C. Stefanek | Hemming apparatus and method |
| US6923036B1 (en) | 1999-06-29 | 2005-08-02 | Ronald C. Stefanek | Hemming apparatus and method |
| US6467324B2 (en) * | 2001-02-27 | 2002-10-22 | William Patrick | Die hemming assembly and method |
| JP5390152B2 (en) * | 2008-09-25 | 2014-01-15 | Ｊｆｅスチール株式会社 | Closed structure member manufacturing method, press forming apparatus, and closed structure member |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554829B2 (en) * | 1977-06-06 | 1980-02-01 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5549852Y2 (en) * | 1978-06-21 | 1980-11-20 |
-
1981
- 1981-05-11 JP JP7044181A patent/JPS57184520A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS554829B2 (en) * | 1977-06-06 | 1980-02-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57184520A (en) | 1982-11-13 |
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