JP2837502B2 - Long material bending method - Google Patents

Long material bending method

Info

Publication number
JP2837502B2
JP2837502B2 JP10487890A JP10487890A JP2837502B2 JP 2837502 B2 JP2837502 B2 JP 2837502B2 JP 10487890 A JP10487890 A JP 10487890A JP 10487890 A JP10487890 A JP 10487890A JP 2837502 B2 JP2837502 B2 JP 2837502B2
Authority
JP
Japan
Prior art keywords
bending
work
separation line
long material
shape
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 - Fee Related
Application number
JP10487890A
Other languages
Japanese (ja)
Other versions
JPH044927A (en
Inventor
武史 池村
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP10487890A priority Critical patent/JP2837502B2/en
Publication of JPH044927A publication Critical patent/JPH044927A/en
Application granted granted Critical
Publication of JP2837502B2 publication Critical patent/JP2837502B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)
  • Punching Or Piercing (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は長尺材を用いて函体等を製造するための長尺
材の曲げ加工方法に関する。
Description: TECHNICAL FIELD The present invention relates to a method for bending a long material for manufacturing a box or the like using the long material.

(従来の技術) 従来の長尺材を用いた板金加工における函体の製造
は、第3図に示した工程によって行われていた。
(Prior Art) The manufacture of a box in sheet metal processing using a conventional long material has been performed by the steps shown in FIG.

(1)コイル材20を所定の長さに切断する。(1) Cut the coil material 20 to a predetermined length.

(2)所定形状にタレットパンチプレス等によりワーク
となる展開形状をブランク抜きをする(Lは長さ方向、
Wは高さ方向)。
(2) Blanking out a developed shape to be a work by a turret punch press or the like into a predetermined shape (L is the length direction,
W is the height direction).

(3)プレスブレーキ等によりL方向の折曲げを行う。(3) Bending in the L direction by a press brake or the like.

(4)次にL曲げを行い2隣辺を有する函体の一側方が
できる(Cは隙間)。
(4) Next, L-bending is performed to form one side of a box having two adjacent sides (C is a gap).

(5)この一側方のものを2個組合せ、接合部分を溶接
等によって溶着する。
(5) Combine the two pieces on one side and weld the joints by welding or the like.

このような工程によって函体の製造を行っていた。The box was manufactured by such a process.

(発明が解決しようとする課題) しかしながら上述の方法では、ブランク抜きの時W/L
が小さいため(例:1/20〜1/50)に、ワークの残留応力
や打抜き加工時の押圧力により歪の影響から、第4図に
示すような横曲りaがブランク材に発生することがあ
る。この横曲りをしたブランク材を次工程でプレスブレ
ーキ等により長手方向に曲げ加工すると、ワークである
ブランク材の両端部は抜き位置と曲げ位置にずれbを生
し、L曲げ後の合せ部の隙間C(第3図(4))が大き
くなったり、もしくは合せ部に余肉がでて干渉するため
に溶接不良が多発し、手直しによる余計な工数を必要と
するなどの欠点があった。
(Problems to be solved by the invention) However, in the above-described method, W / L when blanking is not performed
Is small (eg: 1/20 to 1/50), and the blank bends a as shown in Fig. 4 due to the residual stress of the work and the influence of distortion due to the pressing force during punching. There is. When the blank material that has been bent laterally is bent in the longitudinal direction by a press brake or the like in the next step, both ends of the blank material, which is a work, generate a shift b between the punching position and the bending position, and the joint portion after the L bending is formed. The gap C (FIG. 3 (4)) becomes large, or there is a problem that welding failure occurs frequently due to the interference of excess joints at the joints, requiring extra man-hours for rework.

本発明は上述の事情に鑑みてなされたもので、その目
的とするところは、ワークの横曲りによる長手方向の曲
げ位置と抜き位置のずれを防止する長尺材の曲げ加工方
法を提供しようとするものである。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for bending a long material that prevents a displacement between a longitudinal bending position and a punching position due to a lateral bending of a work. Is what you do.

(課題を解決するための手段) 上記目的を達成するため本発明の長尺材の曲げ加工方
法は、曲げ加工を含む長尺板金の加工方法において、幅
広の長尺材の長手方向に切離しラインを設け、この切離
しラインの両側にワークとなる展開形状領域を取り、こ
の展開形状領域から各々のワークとなる展開形状を前記
切離しラインを含んだまま打抜き加工し、さらに打抜か
れた各々の展開形状の端部を曲げ加工し、次いで前記切
離しラインで前記各々の展開形状を切離してワークを形
成し、さらに、前記切離されたワークの各々の未加工部
の曲げ加工を行い、ワークの横曲りによる長手方向の曲
げ位置のずれを防止したことを特徴とするものである。
(Means for Solving the Problems) In order to achieve the above object, a method for bending a long material according to the present invention is directed to a method for processing a long sheet metal including a bending process, wherein a line for separating a wide long material in a longitudinal direction is provided. Are provided on both sides of the separation line, and a development shape region to be a work is taken. From this development shape region, a development shape to be each work is punched while including the separation line, and further, each development shape punched out The end of the work is then bent, and then each of the unfolded shapes is cut off at the separation line to form a work. Further, each unprocessed portion of the cut work is bent to perform a horizontal bending of the work. The displacement of the bending position in the longitudinal direction due to the above is prevented.

(作用) 上記方法による本発明の長尺材の曲げ加工方法は、長
尺材の長手方向に切離しラインを設けてその両側にワー
クとなる展開形状領域を取り、切離しラインと両側の展
開形状領域を一度にブランク抜きするようにしたので、
材料の横曲り量は長さ方向Lと幅方向Wとの比W/Lが大
きくなるので小さくなり、両端部の曲げ加工を行った後
でワークを分割するので横曲りはなくなり、L曲げ後の
合せ部の精度が向上する。
(Function) In the method of bending a long material according to the present invention by the above method, a separation line is provided in the longitudinal direction of the long material, and a developed shape region serving as a work is formed on both sides thereof, and the separated line and the developed shape region on both sides are provided. Was blanked at once,
The amount of lateral bending of the material decreases because the ratio W / L of the length direction L to the width direction W increases, and the workpiece is divided after bending both ends, so that the lateral bending disappears, and after the L bending. The accuracy of the mating part is improved.

(実施例) 以下、本発明の長尺材の曲げ加工方法を第1図および
第2図によって説明する。
(Example) Hereinafter, a method for bending a long material of the present invention will be described with reference to FIGS. 1 and 2. FIG.

本実施例はいずれも従来例で示したと同じ函体を製造す
るものとして説明する。
In this embodiment, all cases will be described as manufacturing the same box as that shown in the conventional example.

第1図は函体の上部側を幅Aの切離しラインに対応す
る状態に配したものである。図において1はコイル材で
あり、以下第1図の(1)→(2)→(3)→・・・・
の工程をもって曲げ加工を行うものである。
In FIG. 1, the upper side of the box is arranged in a state corresponding to a separation line of width A. In the figure, reference numeral 1 denotes a coil material, and in the following, (1) → (2) → (3) →.
The bending process is performed in the step.

(1)コイル材1は少なくとも長手方向の中央部に幅A
の切離しラインを設け、この切離しラインの両端に函体
の展開された形状が十分にとれる広幅物を用い、函体の
隣接辺が互いに連結された状態の長さLを含んで予め切
断する。
(1) The coil material 1 has a width A at least in the center in the longitudinal direction.
Is cut in advance using a wide object at both ends of the separation line, in which the expanded shape of the box can be sufficiently taken, and the adjacent sides of the box are connected to each other.

(2)この切断された長尺材2は所定形状にタレットパ
ンチプレスにより各々のワークとなる展開形状を前記切
離しラインを含んだまま打抜き加工する。このとき、こ
の各々のワークとなる展開形状は幅Aの切離しラインを
隔てて互いに対応する倒立状に2個宛打抜かれる。これ
によってW/Lは大きく取ることができる。このW/Lの比を
大きくすると表1のJIS規格の横曲りにも示されている
ように、横曲りを小さくすることができる。
(2) The cut long material 2 is punched into a predetermined shape by a turret punch press while developing the shape of each work including the separation line. At this time, two unfolded shapes corresponding to the respective workpieces are punched in an inverted shape corresponding to each other across a separation line having a width A. As a result, W / L can be increased. When the ratio of W / L is increased, the lateral bending can be reduced as shown in the lateral bending of the JIS standard in Table 1.

(3)次にプレスブレーキによって両端部の曲げ加工を
行う。この場合W/Lの比は大きいので横曲りはなく正確
な曲げ加工が行われる。
(3) Next, both ends are bent by a press brake. In this case, since the ratio of W / L is large, there is no side bending and accurate bending is performed.

(4)次にタレットパンチプレスによりブランク抜きし
たワークとなる展開形状領域を切離しラインで切離して
2つのワークに分離する。この分離に際しては既に長尺
材に曲げ加工が施されているため剛性が上り、横曲りは
発生し難い。
(4) Next, the developed shape area to be the work blanked out by the turret punch press is separated by a cutting line to separate the work into two works. At the time of this separation, since the long material has already been bent, the rigidity is increased, and lateral bending hardly occurs.

(5)分割後、未加工部の曲げ加工を行い、以後は従来
技術と同様にL曲げ加工を行って組合せ、接合部分を溶
着することにより函体が得られる。この場合、ワークと
なる展開形状には横曲りがないので正確な曲げ加工がで
き、長手方向の曲げ位置と抜き位置のずれは完全に防止
され、合せ部の隙間は密接状態となり溶接不良は皆無と
なる。
(5) After the division, the unprocessed portion is bent, and thereafter, the L-bending process is performed in the same manner as in the related art, the combination is performed, and the joint is welded to obtain a box. In this case, there is no lateral bending in the developed shape to be a workpiece, so that accurate bending can be performed, the deviation between the bending position and the punching position in the longitudinal direction is completely prevented, and the gap between the joining portions is in a close contact state, and there is no welding defect. Becomes

第2図は函体の底部側を幅Aの切離しラインに対応す
る状態を配したもので、第1図の場合と同じ工程によっ
て加工される。なお、図の順序を示す番号は第1図の場
合と同様であって、前記した(1)より(5)に至る工
程は踏襲されるものである。
FIG. 2 shows a state where the bottom side of the box corresponds to a cutting line having a width A, and is processed by the same process as in FIG. The numbers indicating the order of the drawings are the same as those in FIG. 1, and the steps from (1) to (5) are followed.

上述した第1図および第2図の方法は2個取りを示し
たが、4個取りでも同様の効果を得ることができる。こ
の場合、2個取りを上下2段に配置すればよく、上下2
段の問には切離しラインを追加すればよい。
Although the above-described method shown in FIGS. 1 and 2 shows two-cavity, the same effect can be obtained with four-cavity. In this case, it is only necessary to arrange the two-cavities in the upper and lower two stages,
You can add a separation line to the question of the column.

(発明の効果) 以上説明したように、本発明は、曲げ加工を含む長尺
板金の加工方法において、幅広の長尺材の長手方向に切
離しラインを設け、この切離しラインの両側にワークと
なる展開形状領域を取り、この展開形状領域から各々の
ワークとなる展開形状を前記切離しラインを含んだまま
打抜き加工し、さらに打抜かれた各々の展開形状の端部
を曲げ加工し、次いで前記切離しラインで前記各々の展
開形状を切離してワークを形成し、さらに、前記切離さ
れたワークの各々の未加工部の曲げ加工を行い、ワーク
の横曲りによる長手方向の曲げ位置のずれを防止したの
で、 L曲げ後の合せ部に隙間の発生や余肉の干渉はなくな
り、合せ部の溶接不良や手直し作業が不要となり、不良
率が改善され精度の向上が期待できる利点がある。
(Effect of the Invention) As described above, according to the present invention, in a method for processing a long sheet metal including bending, a separation line is provided in a longitudinal direction of a wide and long material, and a work is provided on both sides of the separation line. Taking the unfolded shape area, punching out the unfolded shape to be each work from the unfolded shape area while including the separation line, further bending the end of each unfolded unfolded shape, and then performing the separation line In the above, each of the unfolded shapes is separated to form a work, and further, each unprocessed portion of the separated work is bent to prevent displacement of a bending position in a longitudinal direction due to lateral bending of the work. Therefore, there is no gap between the joints after the L-bending and no interference of excess thickness, so that there is no need for welding defects or reworking of the joints, and there is an advantage that the defect rate can be improved and the accuracy can be improved.

【図面の簡単な説明】[Brief description of the drawings]

第1図および第2図は本発明の実施例で、第1図は長手
方向に設けた切離しラインの両側に函体の上部側となる
展開形状領域を切断した加工工程図、第2図は切離しラ
インの両側に函体の底部側となる展開形状領域を切断し
た加工工程図、第3図および第4図は従来例で、第3図
は1個取り函体の加工工程図、第4図は加工時に発生す
る横曲りを示すブランク図である。 1……ローラ材 2……長尺材 A……切離しラインの幅
FIG. 1 and FIG. 2 show an embodiment of the present invention. FIG. 1 is a working process diagram in which a developed shape region which is an upper side of a box is cut on both sides of a separation line provided in a longitudinal direction, and FIG. FIG. 3 and FIG. 4 show a conventional example in which a developed shape region on the bottom side of the box is cut on both sides of the separating line, FIG. 3 is a conventional example, and FIG. The figure is a blank diagram showing the lateral bending occurring during processing. 1 ... roller material 2 ... long material A ... width of separation line

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】曲げ加工を含む長尺板金の加工方法におい
て、 幅広の長尺材の長手方向に切離しラインを設け、 この切離しラインの両側にワークとなる展開形状領域を
取り、 この展開形状領域から各々のワークとなる展開形状を前
記切離しラインを含んだまま打抜き加工し、 さらに打抜かれた各々の展開形状の端部を曲げ加工し、 次いで前記切離しラインで前記各々の展開形状を切離し
てワークを形成し、 さらに前記切離されたワークの各々の未加工部の曲げ加
工を行い、 ワークの横曲りによる長手方向の曲げ位置のずれを防止
したことを特徴とする長尺材の曲げ加工方法。
In a method of processing a long sheet metal including bending, a separation line is provided in a longitudinal direction of a wide long material, and a development shape region serving as a work is formed on both sides of the separation line. From the above, the unfolded shape to be each work is punched while including the separation line, and further, the end of each unfolded unfolded shape is bent, and then the unfolded shape is separated at the separation line to separate the work. Forming an unprocessed portion of each of the separated workpieces to prevent a displacement of a longitudinal bending position due to a lateral bending of the workpiece. .
JP10487890A 1990-04-20 1990-04-20 Long material bending method Expired - Fee Related JP2837502B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10487890A JP2837502B2 (en) 1990-04-20 1990-04-20 Long material bending method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10487890A JP2837502B2 (en) 1990-04-20 1990-04-20 Long material bending method

Publications (2)

Publication Number Publication Date
JPH044927A JPH044927A (en) 1992-01-09
JP2837502B2 true JP2837502B2 (en) 1998-12-16

Family

ID=14392459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10487890A Expired - Fee Related JP2837502B2 (en) 1990-04-20 1990-04-20 Long material bending method

Country Status (1)

Country Link
JP (1) JP2837502B2 (en)

Also Published As

Publication number Publication date
JPH044927A (en) 1992-01-09

Similar Documents

Publication Publication Date Title
KR100720931B1 (en) Manufacturing method of the housing for lcd module and housing made by the same
JP4149027B2 (en) Square pipe manufacturing method
JP6761663B2 (en) How to process a plate-shaped work
JP2837502B2 (en) Long material bending method
JP2020037127A (en) Mold, punch, die, and processing method
KR100266804B1 (en) Method for manufacturing fire hydrant frame
JP7244192B2 (en) Cylindrical part and manufacturing method thereof
JP3472884B2 (en) Flat steel sheet for bending and bending method
JP2919179B2 (en) Box processing method
JPH0527494B2 (en)
US3559263A (en) Method for making formed articles with shaped end portions from strip stock
JPS61103627A (en) Press forming method of automatic progressive die
JP2001277058A (en) Compound plate working method including laser beam machining and pressing
JPS6242688B2 (en)
JPH06182468A (en) Machining method for metal sheet box
JP2866530B2 (en) Box welding method
JP2000084630A (en) Machining method for platelike fitting parts
JPS635825A (en) Control method for generating wrinkle on roll bending
RU2086333C1 (en) Method of making laminate sheet blank for drawing
JPH0246919A (en) Working method for l-shaped bent product
JP2002210524A (en) Corner forming method
JP2874294B2 (en) Panel part molding method
JP2023069978A (en) Weldment backing strip
JPH0780580A (en) Box like article and production therefor
JP2020192567A (en) Manufacturing method of bent article, and bent article

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees