JPH02147120A - Method of bending plate for leveling saddle camber - Google Patents
Method of bending plate for leveling saddle camberInfo
- Publication number
- JPH02147120A JPH02147120A JP29805188A JP29805188A JPH02147120A JP H02147120 A JPH02147120 A JP H02147120A JP 29805188 A JP29805188 A JP 29805188A JP 29805188 A JP29805188 A JP 29805188A JP H02147120 A JPH02147120 A JP H02147120A
- Authority
- JP
- Japan
- Prior art keywords
- pieces
- punches
- saddle
- dies
- moving
- 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
- 238000005452 bending Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 15
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000012937 correction Methods 0.000 claims description 10
- 230000013011 mating Effects 0.000 description 12
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0272—Deflection compensating means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はプレスブレーキ作業における板の折り曲げに伴
う鞍反りを矯正する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for correcting saddle warpage caused by bending of a plate during press brake work.
従来、この種の鞍反り矯正方法として第１４図に示すよ
うにあらかじめ鞍反りとは逆に金型すなわちパンチａと
ダイｂに反りを与え、製品に逆反りを与える方法があっ
た。Conventionally, as shown in FIG. 14, as a method for correcting saddle warpage, there has been a method in which a mold, that is, a punch A and a die B, is warped in advance in the opposite direction to the saddle warp, thereby giving the product a reverse warp.
また、曲げ時内側で圧縮、外側で引張りの内力を生じ鞍
返りを生じるのが一般的な鞍反り現象であるが、第１５
図に示すように板Ｃの外側の頂点ｄをパンチａとダイｂ
、ｂ’ とで押しつぶして外側の引張り内力を解放する
ようにした方法があった。In addition, when bending, compression occurs on the inside and tension on the outside, which is a common saddle warping phenomenon, which causes the saddle to warp.
As shown in the figure, the outer vertex d of plate C is connected to punch a and die b.
, b' was used to release the external tensile internal force.
前者の鞍反り矯正方法では製品の材質、板厚、曲げ角、
曲げＲ等諸条件に合わせた個々の金型を要す欠点があっ
たし、後者の鞍反り矯正方法ではダイ側を分割金型とな
る例が多く、型の製作が問題になっていた。In the former saddle warpage correction method, the product material, plate thickness, bending angle,
This method had the disadvantage of requiring individual molds tailored to various conditions such as bending R, and the latter saddle warp correction method often required a split mold on the die side, posing problems in mold manufacturing.
本発明は上記の事情に鑑みなされたものであって、その
目的とするところは厳密な鞍反り矯正を求めず近似的な
矯正に止どめて実用的な範囲で近似的な真直度を得るこ
とが可能で安価で汎用性の高い鞍反り矯正板曲げ方法を
堤倶することにある。The present invention has been made in view of the above circumstances, and its purpose is to achieve approximate straightness within a practical range by limiting the correction to an approximate degree without requiring strict correction of saddle warpage. The object of the present invention is to provide a method of bending a saddle warp correction plate that is inexpensive and highly versatile.
〔課題を解決するための手段及び作用〕上記の目的を達
成するために、本発明は、折り曲げ幅全長を適宜分割し
た長さのパンチ及びダイを用い、プレス時にパンチ及び
ダイに組ごとに鞍スリと同方向に反りを与えて板の隣り
合うパンチ及びダイの継目にあたる部分に鞍反りとは逆
方向の微弱な折曲げ部を形成するようにした。[Means and operations for solving the problem] In order to achieve the above object, the present invention uses punches and dies whose lengths are appropriately divided by the entire bending width, and when pressing, a saddle is attached to each pair of punches and dies. A slight bend in the opposite direction to the saddle warp was formed at the part of the plate corresponding to the joint between adjacent punches and dies by giving the board a warp in the same direction as the slit.
以下、本発明の実施例を第１図乃至第１２図に基づいて
説明する。第１図に本発明方法に供するプレスブレーキ
装置の断面を示し、第２図に第１図■−■線に沿う断面
を示す。これら図面中１はパンチベースであり、このパ
ンチベース１にはコマ収容部２とパンチ挿入部３とが形
成しである。コマ収容部２内には固定コマ４と移動コマ
５とこれら両コマ４．５を連結する連結具６と補助板７
とが収容しである。Embodiments of the present invention will be described below with reference to FIGS. 1 to 12. FIG. 1 shows a cross section of a press brake device used in the method of the present invention, and FIG. 2 shows a cross section taken along line 1--2 in FIG. 1 in these drawings is a punch base, and this punch base 1 has a piece accommodating portion 2 and a punch insertion portion 3 formed therein. Inside the frame housing section 2, there is a fixed frame 4, a movable frame 5, a connector 6 for connecting these two frames 4.5, and an auxiliary plate 7.
and is accommodated.
固定コマ４と移動コマ５との互いの合せ面８．９は同一
の勾配を持ち、組合せた状態では両コマ４．５の端面１
０，１１は互に平行になる。The mating surfaces 8.9 of the fixed piece 4 and the movable piece 5 have the same slope, and in the combined state, the end face 1 of both pieces 4.5
0 and 11 are parallel to each other.
固定コマ４と移動コマ５の組合わせは−グループで６対
有り、第１の組合せの固定コマ４１、移動コマ５−１と
第６の組合せの固定コマ４−６．５−６とは同じ勾配の
合せ面８，９を有していて、その勾配は第４図および第
５図に示すように移動コマ５−１．５−６の移動方向イ
に水平面口に対して角度αになされている。There are six combinations of fixed pieces 4 and moving pieces 5 in -groups, and the first combination of fixed pieces 41, moving pieces 5-1 and the sixth combination of fixed pieces 4-6, 5-6 are the same. It has sloped mating surfaces 8, 9, the slope of which is made at an angle α with respect to the horizontal plane opening in the moving direction A of the moving pieces 5-1 and 5-6, as shown in FIGS. 4 and 5. ing.
そして、前記合せ面８，９に沿って移動コマ５−１．５
−６が移動したときＳｍの上下動を生じる。Then, the pieces 5-1.5 move along the mating surfaces 8 and 9.
-6 causes vertical movement of Sm.
また、第２の組合せの固定コマ４−２、移動コマ５−２
と第５の組合せの固定コマ４−５、移動コマ５−５とは
同じ勾配の合せ面８，９を有していて、その勾配は第６
図および第７図に示すように移動方向イに対して角度β
の方向ハに水平面口に対して角度αになされている。In addition, a second combination of fixed piece 4-2 and moving piece 5-2
The fixed piece 4-5 and the moving piece 5-5 of the fifth combination have mating surfaces 8 and 9 with the same slope, and the slope is the same as that of the sixth
As shown in Figures and Figure 7, the angle β with respect to the moving direction A is
The direction C is made at an angle α with respect to the horizontal surface.
そして、前記合せ面８，９に沿って移動コマ５−２．５
−５が移動したとき５ｘ（−αＣ０８β）の上下動を生
じる。Then, the pieces 5-2.5 move along the mating surfaces 8 and 9.
When -5 moves, it causes a vertical movement of 5x (-αC08β).
また、第３の組合せの固定コマ４−３、移動コマ５−３
と第４の組合せの固定コマ４−４、移動コマ５−４とは
同じ勾配の合せ面８，９を有していて、その勾配は第８
図および第９図に示すように移動方向イに対して角度β
−９０゜の方向ホに水平面口に対して角度αになされて
いる。そして前記合せ面８，９に沿って移動コマ５−３
．５−４が移動したときの上下動Ｓ。In addition, the third combination of fixed piece 4-3 and moving piece 5-3
The fixed piece 4-4 and the moving piece 5-4 of the fourth combination have mating surfaces 8 and 9 with the same slope, and the slope is the same as that of the eighth
As shown in Fig. 9 and Fig. 9, the angle β is
-90° direction E is made at an angle α with respect to the horizontal surface aperture. Then, the piece 5-3 moves along the mating surfaces 8 and 9.
．． Vertical movement S when 5-4 moves.
は零である。is zero.
以上のことから角度βを調整することにより、同じ水平
移動量に対しＳｍを最大とした任意の上下動を作ること
ができる。From the above, by adjusting the angle β, it is possible to create an arbitrary vertical movement with maximum Sm for the same amount of horizontal movement.
前記固定コマ４−１〜４−６と移動コマ５−１〜５−６
との合せ面８，９には移動方向イに沿う溝２２．２３が
形成してあり、また前記連結具６の移動コマ５−１〜５
−６側には所定の間隔をおいて複数の突起１２が設けて
あり、また連結具６の両端部はブロック状になされてお
り、左方のブロック部１３には移動方向イに沿う螺子孔
１４が形成しである。The fixed pieces 4-1 to 4-6 and the moving pieces 5-1 to 5-6
Grooves 22 and 23 are formed in the mating surfaces 8 and 9 along the moving direction A, and the movable pieces 5-1 to 5 of the connecting tool 6
A plurality of protrusions 12 are provided at predetermined intervals on the -6 side, and both ends of the connector 6 are block-shaped, and the left block part 13 has a screw hole along the moving direction A. 14 is formed.
そして、前記連結具６の一方の縁部６ａを固定コマ４−
１〜４−６の合せ面８の溝２２に摺動可能に挿入し、連
結具６の突起１２間の縁部６ｂを移動コマ５−１〜５−
６の合せ面９の溝２３に挿入して両合せ面８．９は互に
摺接させてあり、固定コマ４−１〜４−６の端面１０は
コマ収容部２の上面１５に当接させてあり、また移動コ
マ５−１〜５−６の端面１１は補助板７に当接させであ
る。Then, one edge 6a of the connector 6 is attached to the fixing piece 4-
The moving pieces 5-1 to 5- are slidably inserted into the grooves 22 of the mating surfaces 8 of the connectors 1 to 4-6, and the edges 6b between the protrusions 12 of the connectors 6 are moved.
The fixed pieces 4-1 to 4-6 are inserted into the grooves 23 of the mating surfaces 9 of 6, and the mating surfaces 8.9 are brought into sliding contact with each other, and the end surfaces 10 of the fixed pieces 4-1 to 4-6 are in contact with the upper surface 15 of the piece accommodating portion 2. The end faces 11 of the movable pieces 5-1 to 5-6 are brought into contact with the auxiliary plate 7.
このような６対で−グループを構成する固定コマ４−１
〜４−６、移動コマ５−１〜５−６は、前記コマ収容部
２に複数のグループで収容しである。Fixed pieces 4-1 that make up a group of 6 pairs like this
~4-6, the moving pieces 5-1 to 5-6 are accommodated in the piece storage section 2 in a plurality of groups.
前記バンチベース１の左端部には移動調整用ボルト１６
が回転可能に設けてあり、この移動調整用ボルト１６は
前記螺子孔１４に螺合している。A movement adjustment bolt 16 is provided at the left end of the bunch base 1.
is rotatably provided, and this movement adjustment bolt 16 is screwed into the screw hole 14.
パンチベース１のパンチ挿入部３にはパンチ１７が腹数
個並べて挿入固定してあり、固定コマ４−１〜４−６、
移動コマ５−１〜５−６の−グループ毎に１個のパンチ
エアが配置しである。Several punches 17 are inserted and fixed in the punch insertion portion 3 of the punch base 1, and fixed pieces 4-1 to 4-6,
One punch air is arranged for each group of moving pieces 5-1 to 5-6.
ダイベース１８にもコマ収容部１９が設けてあり、この
コマ収容部１９に上記した固定コマ４と移動コマ５及び
連結具６と同構成のものが上下を逆にして収容しである
。またダイベース１８の上面には補助板２０が載せてあ
り、この補助板２０の上面に複数個のダイ２１が載せで
ある。ダイ２１は固定コマ４−１〜４−６、移動コマ５
−１〜５−６の一グループ毎に１個当てに配置しである
。The die base 18 is also provided with a piece accommodating portion 19, and the above-described fixed pieces 4, movable pieces 5, and connectors 6 having the same structure are housed upside down in this piece accommodating portion 19. Further, an auxiliary plate 20 is placed on the upper surface of the die base 18, and a plurality of dies 21 are placed on the upper surface of this auxiliary plate 20. Die 21 includes fixed pieces 4-1 to 4-6 and moving piece 5.
-1 to 5-6, one piece is placed in each group.
次に上記したプレスブレーキ装置による鞍反り矯正板曲
げの作動を説明する。Next, the operation of bending the saddle warp correction plate using the press brake device described above will be explained.
パンチエア側において、移動′：Ａｇｌ用ボルト１６を
回転して螺子送りにより、連結具６を第１図において左
方向に移動させることにより各移動コマ５−１〜５−６
を左方向に移動させる。このために各グループにおいて
第１、第６の移動コマ５−１．５−６はＳｍだけ下方に
移動し、第２、第５の移動コマ５−２．５−５はＳｘだ
け下方に移動して第１〜第６の移動コマ５−１〜５−６
がなす曲線は上に凸の弓形になり、中央に６０の隙間が
生じる。On the punch air side, move ': by rotating the Agl bolt 16 and screw feeding, the connecting tool 6 is moved to the left in FIG. 1 to move each moving piece 5-1 to 5-6
move to the left. For this reason, in each group, the first and sixth moving pieces 5-1.5-6 move downward by Sm, and the second and fifth moving pieces 5-2.5-5 move downward by Sx. The first to sixth moving pieces 5-1 to 5-6
The curve formed by the curve is an upwardly convex arc, and a gap of 60 is created in the center.
また、ダイ２１側において、移動調整用ボルト１６′を
回転して螺子送りにより、連結具６を第１図において左
方向に移動させることにより各移動コマ５−１〜５−６
を左方向に移動させる。このために各グループにおいて
第１、第６の移動コマ５−１．５−６はＳｍだけ下方に
移動し、第２、第５の移動コマ５−２．５−５はＳｘだ
け下方に移動して第１〜第６の移動コマ５−１〜５−６
がなす曲線は上に凸の弓形になり、両端にδ。の隙間が
生じる。Further, on the die 21 side, each moving piece 5-1 to 5-5 is moved by rotating the movement adjusting bolt 16' and screw feeding to move the connecting tool 6 to the left in FIG.
move to the left. For this reason, in each group, the first and sixth moving pieces 5-1.5-6 move downward by Sm, and the second and fifth moving pieces 5-2.5-5 move downward by Sx. The first to sixth moving pieces 5-1 to 5-6
The curve formed by this is an upwardly convex arc, with δ at both ends. A gap is created.
この状態で材料の板２４をパンチ１７とダイ２１との間
に入れ、パンチエアを下降させ加圧するとパンチ１７及
びダイ２１は加圧力によりδ。のたわみを生じた後、そ
れぞれの移動コマ５−１〜５−６に当接し、更に加圧さ
れて板２４の曲げ加工を行う。この時、長手方向には複
数箇所のＲ部が形成され、その継目にＲとは逆曲率で接
線角θΩ比較的急激な変曲点を生じ、当初の目的である
部分選曲げによる鞍反り矯正が行われる（第１０図、第
１１図参照）。In this state, the material plate 24 is inserted between the punch 17 and the die 21, and when the punch air is lowered and pressurized, the punch 17 and the die 21 are moved by δ due to the pressurizing force. After the plate 24 is bent, it comes into contact with each of the movable pieces 5-1 to 5-6, and is further pressurized to bend the plate 24. At this time, multiple R portions are formed in the longitudinal direction, and a relatively sharp inflection point with a curvature opposite to R and a tangential angle θΩ is created at the joint, which is the original purpose of correcting saddle warpage by partial selective bending. (See Figures 10 and 11).
このようにして加工された板２４を第１２図に示す。こ
れは一般的な鞍反りの所々に鞍反りとは逆方向の部分画
げが与えられ、背部の頂点がそれぞれ定盤に接するよう
になる。A plate 24 processed in this manner is shown in FIG. This is done by adding partial strokes in the opposite direction to the general saddle warp, so that the apex of the back is in contact with the surface plate.
この時、それぞれ曲げの中央部の最大隙間δ２は全長し
に対する折曲げ部長さＬ ／ ｎの二乗に反比例して減
少する。At this time, the maximum gap δ2 at the center of each bend decreases in inverse proportion to the square of the bend length L/n relative to the total length.
すなわち、
なおδ、は第１３図に示す一般的な鞍反りをした板２４
′の中央の最大隙間である。In other words, δ is the general saddle warped plate 24 shown in FIG.
′ is the maximum gap in the center.
例えば、従来方法で全長５ｍの板を曲げて最大隙間δ＋
−１０ｍｍになる場合、本発明方法によると５００ｍｍ
長のパンチ１７及びダイ２１を１０組用いて曲げたら最
大隙間δ２中０．１ｍｍと計算でき、実用上はとんど問
題となることのない製品が得られる。For example, when bending a board with a total length of 5 m using the conventional method, the maximum gap δ +
-10mm, according to the method of the present invention, it becomes 500mm
If 10 sets of long punches 17 and dies 21 are used for bending, the maximum gap δ2 can be calculated to be 0.1 mm, and a product that will hardly cause any problems in practical use can be obtained.
上記した実施例として示した鞍反り矯正機構を用いるこ
とにより、従来から用いられているプレスブレーキに手
を加えることなく簡単に高精度な製品を得ることができ
るし、また中開き調整装置との併合が可能であるため、
より安価で操作性の優れた鞍反り矯正装置付プレスブレ
ーキが提供できる。By using the saddle warpage correction mechanism shown in the above embodiment, it is possible to easily obtain a highly accurate product without modifying the conventionally used press brake, and it is also possible to easily obtain a high-precision product without modifying the conventionally used press brake. Since annexation is possible,
It is possible to provide a press brake with a saddle warp correction device that is cheaper and has excellent operability.
また、金型、特にパンチ側は比較的剛性が高いため、薄
板的げの場合、パンチを予定通りたわませることが困難
なほどの低加圧力加工がある。In addition, since the mold, especially the punch side, has relatively high rigidity, in the case of thin plate targets, there is processing with such low pressure that it is difficult to bend the punch as planned.
この時は、あらかじめ長手方向にＲを与えた金型を用い
るか、または１グループ内でさらに細かく分割した金型
を用いる等により鞍反り矯正を行うことができる。At this time, the saddle warp can be corrected by using a mold that has been given a radius in the longitudinal direction in advance, or by using molds that are further divided into smaller parts within one group.
いずれにしろ、ある範囲で金型のたわみを自由にコント
ロールできるので一つの金型で汎用性の高い鞍反り矯正
ができる。In any case, since the deflection of the mold can be freely controlled within a certain range, a single mold can be used for highly versatile saddle warp correction.
以上詳述したように、本発明は、折り曲げ幅全長を適宜
分割した長さのパンチ及びダイを用い、プレス時にパン
チ及びダイに組ごとに鞍反りと同方向に反りを与えて板
の隣り合うパンチ及びダイの継目にあたる部分に鞍反り
とは逆方向の微弱な折曲げ部を形成するようにしたから
、製品には全長にわたる鞍反りの所々にこの鞍反りとは
逆方向の微弱な折曲げ部が与えられて実用的な範囲で近
似的な真直度を得ることができる。As described in detail above, the present invention uses punches and dies whose lengths are divided appropriately over the entire length of the bending width, and warps each pair of punches and dies in the same direction as the saddle warp during pressing, so that adjacent plates can be warped. Since a slight bend in the opposite direction to the saddle warp is formed at the joint between the punch and die, the product has slight bends in the opposite direction to the saddle warp in places along the entire length of the product. Approximate straightness can be obtained within a practical range.
第１図は本発明方法に供するプレスブレーキ装置の断面
図、第２図は第１図■−■線に沿う断面図、第３図はコ
マ高さ調整機構の分解斜視図、第４図は固定コマと移動
コマの組合せ状態の正面図、第５図は同平面図、第６図
は他の固定コマと移動コマの組合せ状態の正面図、第７
図は同平面図、第８図は他の固定コマと移動コマの組合
せ状態の正面図、第９図は同平面図、第１０図、第１１
図は本発明方法の説明図、第１２図は本発明方法による
仕上り形状を有する板の斜視図、第１３図は一般的な鞍
反りを有する板の斜視図、第１４図、第１５図は従来の
鞍反り防止手段の説明図である。
１はパンチベース、２はコマ収容部、３はパンチ挿入部
、４は固定コマ、５は移動コマ、６は連結具、７は補助
板、８．９は合せ面、１７はパンチ、１８はダイベース
、２１はダイ。Fig. 1 is a sectional view of a press brake device used in the method of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is an exploded perspective view of the top height adjustment mechanism, and Fig. 4 is a sectional view of the press brake device used in the method of the present invention. A front view of a combination of a fixed piece and a moving piece, FIG. 5 is a plan view of the same, FIG. 6 is a front view of another combination of a fixed piece and a moving piece, and FIG.
The figure is a plan view of the same, Figure 8 is a front view of a combination state of another fixed piece and a moving piece, Figure 9 is a plan view of the same, Figures 10 and 11.
The figure is an explanatory diagram of the method of the present invention, Figure 12 is a perspective view of a plate with a finished shape obtained by the method of the present invention, Figure 13 is a perspective view of a plate with a general saddle warp, and Figures 14 and 15 are FIG. 2 is an explanatory diagram of a conventional saddle warpage prevention means. 1 is a punch base, 2 is a piece storage part, 3 is a punch insertion part, 4 is a fixed piece, 5 is a movable piece, 6 is a connector, 7 is an auxiliary plate, 8.9 is a mating surface, 17 is a punch, 18 is Die base, 21 is die.
Claims (1)
用い、プレス時にパンチ及びダイに組ごとに鞍反りと同
方向に反りを与えて板の隣り合うパンチ及びダイの継目
にあたる部分に鞍反りとは逆方向の微弱な折曲げ部を形
成するようにしたことを特徴とする鞍反り矯正板曲げ方
法。Using punches and dies whose lengths are divided by the entire length of the bending width, warp is applied to each set of punches and dies in the same direction as the saddle warp during pressing, and the saddle warp is created at the joint between adjacent punches and dies of the plate. A method for bending a saddle warp correction plate characterized by forming a weak bend in the opposite direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29805188A JPH0829352B2 (en) | 1988-11-28 | 1988-11-28 | Bending method for saddle warp plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29805188A JPH0829352B2 (en) | 1988-11-28 | 1988-11-28 | Bending method for saddle warp plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02147120A true JPH02147120A (en) | 1990-06-06 |
| JPH0829352B2 JPH0829352B2 (en) | 1996-03-27 |
Family
ID=17854496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29805188A Expired - Lifetime JPH0829352B2 (en) | 1988-11-28 | 1988-11-28 | Bending method for saddle warp plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0829352B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5390520A (en) * | 1992-05-15 | 1995-02-21 | Mannesmann Aktiengesellshaft | Closed-frame type pipe-bending press |
| EP0983807A2 (en) * | 1998-08-31 | 2000-03-08 | Toyokoki Co., Ltd. | A press brake |
| US6408464B1 (en) | 1999-08-23 | 2002-06-25 | Hill-Rom Services, Inc. | Birthing bed foot section attachment mechanism |
| US6470520B1 (en) | 1999-08-23 | 2002-10-29 | Hill-Rom Services, Inc. | Bed section attachment mechanism |
| US6725702B2 (en) * | 2001-10-26 | 2004-04-27 | Ariel Financing Ltd. | Apparatus and method for overcoming angular deviations in a workpiece |
| US7685659B2 (en) | 2004-09-22 | 2010-03-30 | Hill-Rom Services, Inc. | Storable foot section for a bed |
| WO2012096362A1 (en) | 2011-01-14 | 2012-07-19 | 株式会社 アマダ | Bending work method for plate material and device for adjusting residual stress |
| US9862108B2 (en) | 2011-10-06 | 2018-01-09 | Bic Violex S.A. | Razor blade, razor head, and method of manufacture |
-
1988
- 1988-11-28 JP JP29805188A patent/JPH0829352B2/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5390520A (en) * | 1992-05-15 | 1995-02-21 | Mannesmann Aktiengesellshaft | Closed-frame type pipe-bending press |
| EP0983807A2 (en) * | 1998-08-31 | 2000-03-08 | Toyokoki Co., Ltd. | A press brake |
| EP0983807A3 (en) * | 1998-08-31 | 2001-04-11 | Toyokoki Co., Ltd. | A press brake |
| US6408464B1 (en) | 1999-08-23 | 2002-06-25 | Hill-Rom Services, Inc. | Birthing bed foot section attachment mechanism |
| US6470520B1 (en) | 1999-08-23 | 2002-10-29 | Hill-Rom Services, Inc. | Bed section attachment mechanism |
| US6725702B2 (en) * | 2001-10-26 | 2004-04-27 | Ariel Financing Ltd. | Apparatus and method for overcoming angular deviations in a workpiece |
| US7685659B2 (en) | 2004-09-22 | 2010-03-30 | Hill-Rom Services, Inc. | Storable foot section for a bed |
| US8099807B2 (en) | 2004-09-22 | 2012-01-24 | Hill-Rom Services, Inc. | Storable foot section for a bed |
| WO2012096362A1 (en) | 2011-01-14 | 2012-07-19 | 株式会社 アマダ | Bending work method for plate material and device for adjusting residual stress |
| US9610624B2 (en) | 2011-01-14 | 2017-04-04 | Amada Company, Limited | Method for bending metal sheet and device for regulating residual stress |
| US9862108B2 (en) | 2011-10-06 | 2018-01-09 | Bic Violex S.A. | Razor blade, razor head, and method of manufacture |
| US10220533B2 (en) | 2011-10-06 | 2019-03-05 | Bic Violex Sa | Razor blade, razor head, and method of manufacture |
| US10220532B2 (en) | 2011-10-06 | 2019-03-05 | Bic Violex Sa | Razor blade, razor head, and method of manufacture |
| US10391651B2 (en) | 2011-10-06 | 2019-08-27 | Bic-Violex Sa | Razor blade, razor head, and method of manufacture |
| US10500745B2 (en) | 2011-10-06 | 2019-12-10 | Bic Violex Sa | Razor blade, razor head, and method of manufacture |
| US10744660B2 (en) | 2011-10-06 | 2020-08-18 | Bic Violex S.A. | Razor blade, razor head, and method of manufacture |
| US10843355B2 (en) | 2011-10-06 | 2020-11-24 | Bic-Violex Sa | Razor blade, razor head, and method of manufacture |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0829352B2 (en) | 1996-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4356718A (en) | Bending tool | |
| US4635331A (en) | Method for the production of a guide rail | |
| JP2813108B2 (en) | Strip bending machine | |
| JPH02147120A (en) | Method of bending plate for leveling saddle camber | |
| US3610019A (en) | Bending brake | |
| US3514989A (en) | Method for die forming flexures using edge constraint | |
| JPH10192981A (en) | Method for bending metal plate and using die therefor | |
| JPH0780550A (en) | High precision press for u-shape bending long size material | |
| CN111069434B (en) | Stamping die and working method thereof | |
| JPS5849140Y2 (en) | Adjustment and fixing device for laminated variable press die | |
| JP3157258B2 (en) | Metal sheet bending machine | |
| CN215657413U (en) | Closed angle stamping die and stamping equipment | |
| JP2549041Y2 (en) | Die for sheet metal bending | |
| JPH0494817A (en) | Dies for bending work | |
| JPH0710807Y2 (en) | Bending press die | |
| JPH02182326A (en) | Blanking method | |
| JP3176281B2 (en) | Method for forming tapered surface of metal plate | |
| CN115673115A (en) | Roll punching forming die capable of changing plate flowing mode | |
| JP2007247725A (en) | Cross roller guide | |
| SU893320A1 (en) | Method of constructing surface of stretch forming punch | |
| JPH02192826A (en) | Bulging method | |
| JPH05324A (en) | Straightening device for metallic parts | |
| US20070245796A1 (en) | Press die, drawing method, and pressed product | |
| SU1398950A2 (en) | Die for twisting strips | |
| SU902908A1 (en) | Die for producing elongated sections |