JPS5978727A - Bender for lattice-shaped reinforcing bar - Google Patents

Bender for lattice-shaped reinforcing bar

Info

Publication number
JPS5978727A
JPS5978727A JP18867582A JP18867582A JPS5978727A JP S5978727 A JPS5978727 A JP S5978727A JP 18867582 A JP18867582 A JP 18867582A JP 18867582 A JP18867582 A JP 18867582A JP S5978727 A JPS5978727 A JP S5978727A
Authority
JP
Japan
Prior art keywords
reinforcing bar
fulcrum
bases
clamping
lattice
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
Application number
JP18867582A
Other languages
Japanese (ja)
Other versions
JPH0122059B2 (en
Inventor
Nobuhiro Okuyama
信博 奥山
Junichiro Maeda
純一郎 前田
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.)
Shimizu Construction Co Ltd
Original Assignee
Shimizu Construction 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 Shimizu Construction Co Ltd filed Critical Shimizu Construction Co Ltd
Priority to JP18867582A priority Critical patent/JPS5978727A/en
Publication of JPS5978727A publication Critical patent/JPS5978727A/en
Publication of JPH0122059B2 publication Critical patent/JPH0122059B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/06Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • B21D11/07Making serpentine-shaped articles by bending essentially in one plane

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wire Processing (AREA)

Abstract

PURPOSE:To make construction simple and smaller in size and cost low by moving parallel clamping bases for a reinforcing bar disposed on both right and left sides of a fulcrum pin in the circumferential direction centering at the fulcrum pin. CONSTITUTION:A reinforcing bar P is clamped by means of both clamping bases 3, 4, and a cylinder 19 is further actuated to move parallel the 1st clamping base 3 in an arrow A direction along the guide grooves 5, 6 of a table 1. The 2nd clamping base 4 is parallel moved in an arrow direction B along guide grooves 7, 8. Both bases 3, 4 are stopped in the prescribed position. The bar P is bent with a fulcrum pin 2 as a fulcrum. The cylinders 16, 19 are opened to unclamp the bar P at the point of the time when the bases 3, 4 stop, then a metal 23 for preventing the springing up of the bar is removed and both bases 3, 4 are returned to the initial position. The similar operation is thereafter repeated whereby the lattice-shaped reinforcing bar is manufactured.

Description

【発明の詳細な説明】 この発明はラチス状鉄筋の曲げ加工装置に関する。[Detailed description of the invention] The present invention relates to a bending device for lattice-shaped reinforcing bars.

従来、ラチス状鉄筋の曲げ加工を行なう場合−一つの方
法として、階段筋製作機を利用する方法がとられていた
。ところがこの場合、階段筋自体がそう厳しい精度を要
求されるものではない関係上、この機械でより厳しい精
度を要求されるラチス状鉄筋を製作すると精度が劣って
しまう欠点があった。また、従来の階段筋製作機は、−
回曲げ加工するたびに寸法をチェックしてセットし直さ
なくてはならず、しかも2名で作業を行なわなければな
らない等の不都合があった。
Conventionally, when bending lattice-shaped reinforcing bars, one method has been to use a step bar making machine. However, in this case, since the step bars themselves do not require very strict precision, if this machine was used to manufacture lattice-shaped reinforcing bars, which require stricter precision, the accuracy would be poor. In addition, the conventional step reinforcement making machine is -
There were inconveniences such as having to check the dimensions and resetting each time the bending process was performed, and two people having to perform the work.

また、別の方法として、そうした機械を応用する方法で
はなく、専用機を用いる方法がある。ところが、この場
合の専用機は、鉄筋を自動送りしながら連続的に曲げ加
工してラチス状鉄筋を製作するというものであり、機械
も大形で、コストが高く簡単に移設できないという問題
があった。また、従来のこの種専用機は、鉄筋の両サイ
ドをクランプ装置でクランプして、それらクランプした
部分の中間に支点を当てて、この支点を鉄筋に対して垂
直方向に移動させることによシ鉄筋を押し曲げ、それと
ともにこの支点の移動に同期させて両クランプ装置を中
央部に移動して寄せるというものである。
Another method is to use a dedicated machine instead of applying such a machine. However, the specialized machine in this case is one that automatically feeds the reinforcing bars and continuously bends them to produce lattice-shaped reinforcing bars, and the machines are large, costly, and cannot be easily relocated. Ta. In addition, conventional dedicated machines of this type clamp both sides of the reinforcing bars with clamping devices, place a fulcrum in the middle of the clamped parts, and move this fulcrum in a direction perpendicular to the reinforcing bars. The reinforcing steel is pushed and bent, and both clamp devices are moved to the center in synchronization with the movement of this fulcrum.

すなわち、支点自体が動く構造のものである。In other words, it has a structure in which the fulcrum itself moves.

このため、従来の専用機は、大きな力の加わる支点の可
動機構に相応の堅牢さをもたせなくてはならず部品コス
トが高いものであ#)、シかも寸た鉄筋クラシブ装置u
を支点の移動に同期させて移動させる必要もあり、この
ため機構も複雑となシ、その結実装置全体の価格が高い
ものであった。
For this reason, in conventional special-purpose machines, the movable mechanism of the fulcrum to which large forces are applied must have a corresponding degree of robustness, resulting in high component costs.
It is also necessary to move the fruit in synchronization with the movement of the fulcrum, which makes the mechanism complicated and the price of the entire fruiting device high.

この発明は上記事情に鑑みて外されたもので、その目的
とするとごろは、寸法チェックの必要がなく、作業員1
名で容易にMK良く加工でき、しかも構造が簡凧でかつ
小形でコストも安く、また移設を容易に行なえるラチス
状鉄筋の曲げ加工装置を提供することである。
This invention was devised in view of the above circumstances, and its purpose was to eliminate the need for dimension checks and to allow workers to
To provide a bending device for lattice-like reinforcing bars that can be easily processed with good MK, has a simple structure, is small, and is inexpensive, and can be easily relocated.

この発明の特徴は、大きな力の加わる支点部分(支点ピ
ン)をテーブル上に固定し、その支点の左右両側に配置
した鉄筋クランプ台を、移動機構によシ前記支点を中心
にした円周方向に平行移動するように構成した点にある
The feature of this invention is that a fulcrum part (fulcrum pin) to which a large force is applied is fixed on a table, and a rebar clamping table placed on both the left and right sides of the fulcrum is moved by a moving mechanism in a circumferential direction around the fulcrum. It is located at a point configured to move parallel to .

以下、この発明を図面を参照して説明する。Hereinafter, the present invention will be explained with reference to the drawings.

第1図はこの発明の一実施例を示すもので、図中1は鉄
筋pを載置する作業テーブルである。このテーブル】の
上面中央部には鉄筋のR部に合わせた半径を有する支点
ピン2が固定されている。
FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 denotes a work table on which reinforcing bars p are placed. A fulcrum pin 2 having a radius matching the radius of the reinforcing bar is fixed to the center of the upper surface of the table.

また、テーブルlの上面には、支点ピン2の左右両側に
位置しかつ支点ピン2から所定距離はなれて、第1%第
2の2つの鉄筋クランプ台3.4が配置されている。第
1の鉄筋クランプ台3は既曲げ加工済みの鉄筋p先端側
をクランプするもの、また第2の鉄筋クランプ台4は未
加工側の鉄筋p基端側(手元側)をクランプするもので
あシ、両クランプ台3.4はそれぞれテーブル1の上面
のガイド溝5.6および7,8に沿って移動し得るよう
に設けられている。
Further, on the upper surface of the table 1, two reinforcing bar clamping stands 3.4, 1st and 2nd, are arranged, located on both the left and right sides of the fulcrum pin 2 and separated from the fulcrum pin 2 by a predetermined distance. The first reinforcing bar clamping stand 3 is for clamping the tip end side of the reinforcing bar P which has already been bent, and the second reinforcing bar clamping stand 4 is for clamping the base end side (hand side) of the unbent reinforcing bar P. Both clamp stands 3.4 are provided so as to be movable along guide grooves 5.6 and 7, 8 on the upper surface of the table 1, respectively.

第1の鉄筋クランプ台3は、三角形状のベース板9の上
にその2辺に沿ったクランプ部10.11を設けて、こ
れによシ山形状に折曲形成された鉄筋pを確実にクラン
プできるようにしである。すなわち、ベース板9の2辺
には、それぞれ端部を鉄筋208部に合わせて丸く形成
し7た支え台12゜13が固着され、それに沿ってその
内側に添え板14.15が設けられ、クランプ部10.
11が形成されている。添え板14.15のうち、クラ
ンプ部10側の添え板】4はベース板9に固着され、ま
た他方のクランプ部1111.11の添え板15は移動
可能とされておシ、両クランプ部10.11では支え台
12.13と添え板14 m ] 5の間にそれぞれ鉄
筋pをはさむようになっている。そして、クランプ部1
1の方は、添え板15がベース板9上に固定されたシリ
ンダ16により移動せしめられて、支え台13と添え板
】5との間にはさまれる鉄筋pを締め付けて確実に多ラ
ンプするようになっている。
The first reinforcing bar clamping stand 3 is provided with clamp parts 10 and 11 along two sides of the triangular base plate 9, and thereby securely holds the reinforcing bar p bent into a mountain shape. It can be clamped. That is, on two sides of the base plate 9, support stands 12 and 13 whose ends are rounded to match the reinforcing bars 208 are fixed, and splint plates 14 and 15 are provided along and inside the support stands 12 and 13. Clamp part 10.
11 is formed. Of the splints 14.15, the splint 4 on the side of the clamp part 10 is fixed to the base plate 9, and the splint 15 of the other clamp part 1111.11 is movable. In .11, a reinforcing bar p is sandwiched between the support base 12,13 and the splint plate 14m]5. And the clamp part 1
In case 1, the splint 15 is moved by a cylinder 16 fixed on the base plate 9, and the reinforcing bar p sandwiched between the support base 13 and the splint [5] is tightened to ensure multiple ramps. It looks like this.

そして、こうして構成された三角形状の第1の鉄筋クラ
ンプ台3は、テーブル1の下面側に設けられた図示しな
い平行リンクおよび油圧シリンダにより、テーブル1の
ガイド@5.61C沿って平行移動するようになってい
る。
The triangular first reinforcing bar clamp stand 3 configured in this way is moved in parallel along the guide @5.61C of the table 1 by a parallel link and a hydraulic cylinder (not shown) provided on the lower surface of the table 1. It has become.

また、未加工部分の鉄筋pをクランプする第2の鉄筋ク
ランプ台4は、支え台17と添え台18とからなり、テ
ーブルl下面に設けたシリンダ19により、支え台17
と添え台18の間の溝幅を狭めてその中にはさんだ鉄筋
pを確実にクランプするようになっている。そして、ク
ランプすると同時に、同シリンダ19および図示しない
平行リンクによりクランプ台4そのものをテーブル1上
面のガイド溝7.8に沿って平行移動させるようになっ
ている。
The second reinforcing bar clamping table 4 that clamps the unprocessed reinforcing bar p is composed of a supporting table 17 and a splint 18, and a cylinder 19 provided on the lower surface of the table
The width of the groove between the splint 18 and the splint 18 is narrowed to securely clamp the reinforcing bar p sandwiched therein. At the same time as clamping, the clamp table 4 itself is moved in parallel along the guide groove 7.8 on the upper surface of the table 1 by the cylinder 19 and a parallel link (not shown).

ここで、テーブル1上のガイド溝5,6および7.8は
、各鉄筋クランプ台3,4をテーブル1下面の各シリン
ダにより移動させた際、両者が支点ピン2を中心にして
互いに反対方向に向かう円弧状軌跡を描いて平行移動す
るように曲線状に形成されている。
Here, the guide grooves 5, 6, and 7.8 on the table 1 are such that when each reinforcing bar clamping table 3, 4 is moved by each cylinder on the lower surface of the table 1, the guide grooves 5, 6, and 7.8 move in opposite directions around the fulcrum pin 2. It is formed in a curved shape so that it moves in parallel in an arcuate trajectory toward .

なお、前記第1、第2の鉄筋クランプ台3.4の支え台
13.17の端部には、ピン20およびバー21で連結
されて、支持ローラ22がそれぞれ取付けられている。
Note that support rollers 22 are attached to the ends of the support stands 13.17 of the first and second reinforcing bar clamp stands 3.4, connected by pins 20 and bars 21, respectively.

これら支持ローラ22は、鉄筋pが支え台13.17の
先端R部で曲げられた際に回動して鉄筋pを支持するも
のである。また23は鉄筋はね上がり防止用金具である
These support rollers 22 rotate and support the reinforcing bar p when the reinforcing bar p is bent at the tip R portion of the support stand 13.17. Further, 23 is a metal fitting for preventing the reinforcing steel from springing up.

次に、上記構成の装置により実際に鉄筋pをラチス状に
曲げ加工する場合について、第1図および第2図を参照
して説明する。なお、第2図は加工途中の状況を示すも
ので、細部については省略しである。
Next, a case in which reinforcing bars p are actually bent into a lattice shape using the apparatus having the above configuration will be described with reference to FIGS. 1 and 2. Note that FIG. 2 shows the situation during processing, and details are omitted.

まず、第1図または第2図(イ)に示すように加工すべ
き鉄筋pを作業テーブル1上に載せ、鉄筋クランプ台3
.4に鉄筋pをその形状に合わせてセットする。また鉄
筋はね上が夛防止用金具23をセットする。ぞして、電
源を入れて油圧シリンダ16.19を作動させて鉄筋p
を両クランプ台3゜4によりクランプする。
First, as shown in Fig. 1 or 2 (A), place the reinforcing bar P to be processed on the work table 1, and
.. 4. Set the reinforcing bar p according to its shape. In addition, a metal fitting 23 for preventing reinforcing bars from springing up is set. Then turn on the power and operate the hydraulic cylinder 16.19 to tighten the reinforcing bar p.
is clamped by both clamp stands 3°4.

次いで一テーブルl下面に股はた図示しないシリンダを
作動させるとともに、前記シリンダ19を継続してさら
に作動させることにより、第1図または第2図(ロ)に
示すように第1の鉄筋クランプ台3をテーブル1のガイ
ド溝5.6に沿って矢印A方向に平行移動させ、またg
zの鉄筋クランプ台4をガイド溝7,8に沿って矢印B
方向に平行移動させる。
Next, by operating a cylinder (not shown) on the underside of the table 1 and continuing to operate the cylinder 19, a first reinforcing bar clamping stand is created as shown in FIG. 1 or FIG. 2 (b). 3 in parallel along the guide groove 5.6 of table 1 in the direction of arrow A, and
Move the reinforcing bar clamping table 4 of z along the guide grooves 7 and 8 in the direction of arrow B.
Move parallel to the direction.

そして%第2図0うに示すように所定の位置(ガイド溝
5,6,7.8の終端)で両クランプ台3゜4を停止す
る。このクランプ台3,4の動作によシ、鉄筋pは支点
ビン2を支点として屈曲される。
Then, as shown in FIG. 2, both clamp tables 3 and 4 are stopped at a predetermined position (the end of the guide grooves 5, 6, and 7.8). Due to the operation of the clamp tables 3 and 4, the reinforcing bar p is bent using the fulcrum pin 2 as a fulcrum.

なお、この場合鉄筋pは弾性復帰(スプリングバンク1
分を見こんだ角度まで曲げられる。
In this case, the reinforcing bar p elastically returns (spring bank 1
It can be bent to any desired angle.

そして、鉄筋クランプ台3.4が停止した時点でシリン
ダ16.19を開放し、鉄筋pのクランプを解除し、次
いで鉄筋はね上がり防止用金具23を外し、両鉄筋クラ
ンプ台3.4を(第2図に)に示すように)初期位置に
戻す。そして、以下上記作渠を繰り返してラチス状鉄筋
を製作する。
Then, when the reinforcing bar clamping table 3.4 stops, the cylinder 16.19 is opened, the clamping of the reinforcing bar p is released, the metal fitting 23 for preventing the reinforcing bar from being lifted is removed, and both reinforcing bar clamping tables 3.4 (second Return to the initial position (as shown in figure)). Then, the above-mentioned conduit making process is repeated to produce lattice-shaped reinforcing bars.

このように、上記装置によれば、寸法のチェックをする
必要もなく作業員1名で容易にかつ精度良くラチス状鉄
筋を製作できる。また、ラチス状鉄筋の形状に合わせて
前側の第1の鉄筋クランプ台3を形成しであることによ
り、鉄筋の位置決めが楽に行なえかつ加工した寸法のチ
ェックも同時に行なえ、精度の良い製品を製作できる。
In this way, according to the above-mentioned apparatus, lattice-shaped reinforcing bars can be manufactured easily and accurately by one worker without the need to check the dimensions. In addition, by forming the first reinforcing bar clamping table 3 on the front side to match the shape of the lattice-shaped reinforcing bars, it is possible to easily position the reinforcing bars and check the machined dimensions at the same time, making it possible to manufacture products with high precision. .

なお、加工する鉄筋は被数本であっても同時に加工でき
る。まノヒ、鉄筋クランプ台8,4は両方を同時に移動
さゼずに、片方ずつ移動させても勿論良い。
Note that even if several reinforcing bars are processed, they can be processed at the same time. Of course, the reinforcing bar clamping tables 8 and 4 may be moved one by one instead of both at the same time.

以上説明したように、この発明は、大きな力の加わる支
点ビンをテーブル上に固定し、その支点ビンの左右両側
に配置した鉄筋クランプ台を、移動機構によ)前記支点
ビンを中心にした円周方向に平行移動するように構成し
たものであるから、可動部分に余分な強度をもたせる必
要がなくかつ構造が簡爪になり、小形化およびコストの
低減が図れる。オだ、鉄筋に引張力等の無理なカをかけ
ずに曲げることができ、歪のない精度の良い製品を製作
できる。また、クランプ台が平行移動搭れるから、テー
ブル外にはみ出した鉄筋の手元側や先端側が大きく振ら
れることはなく安全に加工作≠を行なえる。
As explained above, the present invention fixes a fulcrum bin to which a large force is applied on a table, and moves reinforcing bar clamping tables placed on both the left and right sides of the fulcrum bin in a circle around the fulcrum bin using a moving mechanism. Since it is configured to move in parallel in the circumferential direction, there is no need to provide extra strength to the movable part, and the structure is simple, making it possible to reduce the size and cost. Yes, it is possible to bend reinforcing bars without applying excessive force such as tensile force, and it is possible to produce products with high precision and no distortion. In addition, since the clamp table is mounted with parallel movement, the protruding reinforcing bars protruding from the table will not be shaken significantly on the proximal side or tip side, allowing safe machining operations.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の装置の一実施例の上面図、第2図(
イ)〜に)は同装置を用いて実際にラチス状鉄筋を加工
した場合の状況を示す概略因である。
FIG. 1 is a top view of an embodiment of the apparatus of the present invention, and FIG. 2 (
(a) to (b) are general factors showing the situation when lattice-shaped reinforcing bars are actually processed using the same equipment.

Claims (1)

【特許請求の範囲】[Claims] 鉄筋を載置するテーブルと、このテーブルの上面中央部
に固定され九支点ピンと、この支点ビンの左右両側に位
置して前記テーブル上にそれぞれ配置されかつテーブル
上面に沿って移動自在に設けられた2つの鉄筋クランプ
台と、これら各鉄筋クランプ台を前記支点ピンを略中心
にして互いに反対方向に向かう円弧状軌跡を描くように
平行移動せしめる移動機構とを具備してなることを特徴
とするラチス状鉄筋の曲げ加工装置。
A table on which reinforcing bars are placed, nine fulcrum pins fixed to the center of the top surface of this table, and nine fulcrum pins located on the left and right sides of the fulcrum pins, each disposed on the table and movable along the top surface of the table. A lattice comprising two reinforcing bar clamping stands and a moving mechanism for moving each of these reinforcing bar clamping stands in parallel so as to draw circular arc trajectories in opposite directions about the fulcrum pin. Bending processing equipment for shaped reinforcing bars.
JP18867582A 1982-10-27 1982-10-27 Bender for lattice-shaped reinforcing bar Granted JPS5978727A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18867582A JPS5978727A (en) 1982-10-27 1982-10-27 Bender for lattice-shaped reinforcing bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18867582A JPS5978727A (en) 1982-10-27 1982-10-27 Bender for lattice-shaped reinforcing bar

Publications (2)

Publication Number Publication Date
JPS5978727A true JPS5978727A (en) 1984-05-07
JPH0122059B2 JPH0122059B2 (en) 1989-04-25

Family

ID=16227878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18867582A Granted JPS5978727A (en) 1982-10-27 1982-10-27 Bender for lattice-shaped reinforcing bar

Country Status (1)

Country Link
JP (1) JPS5978727A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008272798A (en) * 2007-04-27 2008-11-13 Taro Kasai Apparatus for manufacturing independent-type truss
KR101069614B1 (en) 2008-12-17 2011-10-05 주식회사 금강 Apparatus for die-bending wires
CN103920768A (en) * 2014-04-14 2014-07-16 程明琴 Bending technology for furnace tube of linear heating furnace
CN103934335A (en) * 2014-04-14 2014-07-23 陈坷忠 Linear type heating furnace tube bending technology
CN103934330A (en) * 2014-04-14 2014-07-23 王赛飞 Linear type heating furnace tube bending technology

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49129666A (en) * 1973-04-17 1974-12-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49129666A (en) * 1973-04-17 1974-12-12

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008272798A (en) * 2007-04-27 2008-11-13 Taro Kasai Apparatus for manufacturing independent-type truss
KR101069614B1 (en) 2008-12-17 2011-10-05 주식회사 금강 Apparatus for die-bending wires
CN103920768A (en) * 2014-04-14 2014-07-16 程明琴 Bending technology for furnace tube of linear heating furnace
CN103934335A (en) * 2014-04-14 2014-07-23 陈坷忠 Linear type heating furnace tube bending technology
CN103934330A (en) * 2014-04-14 2014-07-23 王赛飞 Linear type heating furnace tube bending technology
CN103934335B (en) * 2014-04-14 2015-09-23 汪贤女 A kind of bending process of linear pattern heating furnace tube
CN103934330B (en) * 2014-04-14 2016-02-03 舒丽燕 A kind of bending process of linear pattern heating furnace tube

Also Published As

Publication number Publication date
JPH0122059B2 (en) 1989-04-25

Similar Documents

Publication Publication Date Title
US3358348A (en) Method of assembling a truss joint
US2414926A (en) Tube bending machine with pivoted sweep arm
GB921582A (en) Tube and bar bending apparatus
JPS5978727A (en) Bender for lattice-shaped reinforcing bar
US3910092A (en) Metal expanding machine
JP6989613B2 (en) Manufacturing equipment with clamp tools and how to fit the overall length of the bending edge of the clamp tool
US4987760A (en) Leaf-spring bender
US3242710A (en) Contour roll bending machine
US4282737A (en) Hand operated bending apparatus and method for metal bar, tubing and the like
US2955495A (en) Multiple head tube bending device
US3808867A (en) Portable rod or true bender
US11850650B2 (en) Tool and method for processing plate-shaped workpieces, in particular metal sheets
JPS58209424A (en) Automatic bending apparatus for steel bar
US11318516B2 (en) Bending group of a paneling machine tool
JP2589543B2 (en) Bending equipment for small diameter metal pipes
US4072040A (en) Pile straightener
SU897332A1 (en) Method and apparatus for bending strip works on edge
JP2521760Y2 (en) Haunch bending and rebar bending machine
US4106532A (en) Machine for straightening the wire leads of a device
US3745806A (en) Portable hand tool
US3460465A (en) Truss assembling machine
US11596995B2 (en) Bending die assembly with split die and method for using
US1837196A (en) Bending machine
JPS6116533B2 (en)
US3483725A (en) Flattener for tube bender