CN1863618A - Method and system of production of springs from wire of circular or other cross-sectional area - Google Patents
Method and system of production of springs from wire of circular or other cross-sectional area Download PDFInfo
- Publication number
- CN1863618A CN1863618A CNA2004800287025A CN200480028702A CN1863618A CN 1863618 A CN1863618 A CN 1863618A CN A2004800287025 A CNA2004800287025 A CN A2004800287025A CN 200480028702 A CN200480028702 A CN 200480028702A CN 1863618 A CN1863618 A CN 1863618A
- Authority
- CN
- China
- Prior art keywords
- spring
- turn
- wire rod
- diameter
- pitch
- 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
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims abstract description 13
- 210000000481 breast Anatomy 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/10—Coiling wire into particular forms to spirals other than flat, e.g. conical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
- B21F3/04—Coiling wire into particular forms helically externally on a mandrel or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
- Springs (AREA)
Abstract
Method of production of springs made of wire of circular or other type crosssectional area, that are produced after having formed first springs (6) of constant diameter smaller or equal to that of the final spring (7) and of constant pitch smaller or equal to the smallest pitch of the final spring (7), where by compressing in a controlled fashion the spring turn of the initial spring (6) from the interior direction towards the outer one and from the lower side towards the spiral direction the selected pitch and the diameter of the final spring (7) are formed. The invention also relates to a system that is comprised of a main roller (1) with motion rollers (2), (3), (4) that are contacting it peripherally and a pin (5) in an elbow (12) that is connected to an axle (10) situated upon a base (11) that is capable of moving along its longitudinal axis and to revolve around it, transmitting through the elbow (12) the motion to the pin (5) so as to form the diameter and the pitch of the final spring (7).
Description
Technical field
The present invention relates to a kind of method and apparatus of making spring by the wire rod of circular or other shaped cross, this spring is not directly to be formed by unprocessed wire rod manufacturing, but after at first producing helical spring, process once more, the diameter of wherein said helical spring is less than or equal to the minimum diameter of finally wanting the spring made, and its pitch also is less than or equal to the minimum pitch of finally wanting the spring made.
Background technology
Can adopt multiple mode to make spring, these modes all are based on following method without exception: in order to bend to spring, (c) the extruding wire rod is so that can be crooked for a, b at three points at least for needs.At deep two point (a ﹠amp; C) locate to push wire rod, and locate to push wire rod (Fig. 1) in the other direction at a bit (b) of centre along identical direction.If spring advances by these three points from a side, just can produce coil component spring (9).The rotation of spring also tends to make them tangent to each other with zero pitch.If we compress the turn that is produced on the direction perpendicular to it self plane after producing spring, just can produce similar pitch.
To make prior art and become the description of non-limiting particular and accompanying drawing thereof and should be readily appreciated that more according to the details of method and apparatus of the present invention:
Fig. 1: from the conceptive method of making spring according to prior art of having described.
Fig. 2: show in making the process in initial spring stage the device that satisfies the kinematics needs according to position and motion mode, its using method of discrete component.
Fig. 3: show in making the process in final spring stage the device that satisfies the kinematics needs according to position and motion mode, its using method of discrete component.
Fig. 4: show when initial spring forms constant diameter and less pitch the side view of this initial spring.
The specific embodiment
Adopt the application's method, need to divide two stages to make each root spring.At first, produce and have constant diameter and than the helical spring (6) of fine pitch.This spring also can have minimum zero pitch (8).This initial spring (6) does not need to have a lot of turns, because we will utilize it to form the final spring (7) with required coil diameter and pitch.
The initial spring (6) of making as described below: wire rod is wound onto has breast roll selected diameter, that can be rotated motion (1) on every side.Utilization is positioned at one or more rollers (2), (3), (4) of breast roll (1) periphery wire rod is pushed.Also can move in roller (2), (3), (4).Therefore, powerful pulling force can be acted on the wire rod of being strengthened by winding.Along with the rotation of breast roll (1) and the compression of other rollers, thereby wire rod winds up and has formed spring.So formed initial spring (6), its diameter is less than or equal to the minimum diameter of our the desired final spring (7) that obtains.
This just is easy to produce initial spring, this is because can spur wire rod at an easy rate by the rotation roller (1) that can produce frictional resistance on it, in the additive method of making spring, spring only is subjected to extruding forward on the position that is subjected to the secondary constraint of roller on the contrary.
Novelty of the present invention is as described below: when first turn of initial spring (6) forms, we can adopt the pin (5) of suitable shaping that turn is pushed, and wherein this forming pin spurs turn round turn along the direction outside from the turn center.Therefore can make that turn increases, and be bent to the diameter that is conditioned that has as required.Similarly, identical turn also spring vertically on be to be squeezed on the turn direction of advancing.Like this, bending wire has also produced the pitch of regulation simultaneously.The active force that is applied on the turn direction of advance can be produced by the identical pin (5) that can form diameter, or is produced by the pin that another kind suitably is shaped.Here it is and the difference of prior art at present.Utilize these methods, the linear pattern wire rod by roller is extruded and has passed three point mechanisms (pointmechanism), thereby is bent and is advanced continuously thus to form the diameter of turn and desired acquisition.Apply in order to straight wire rod is changed conglobate pressure along from outside to inside direction.In the application's method, can from inside to outside apply the pressure that this can produce diameter in a kind of diverse mode, this is because the application can form the wire rod of at first being aligned, but formed pre-set helical spring, wherein this helical spring has the diameter and the pitch that can be increased.
Along with constantly the advancing and sell the continuous motion of (5) of new turn, formed final spring (7) with desired diameter and pitch, utilize a suitable shut-off mechanism then, in the position of expectation spring is cut off, then produce spring subsequently once more.The initial spring (6) of manufacturing when regulating, is being needed to consider the diameter of wire rod and the minimum diameter of final spring (7), so that the diameter of selection center rotation roller (1) suitably, thereby similar initial cylindrical spring (6) formed.Do not need to twine many turns around breast roll (1), this is because along with a part that wire rod is rotated into circumference, has realized the bending corresponding to initial spring (6) diameter.
For breast roll (1), it can have several millimeters width or be almost wide with the diameter of processing wire rod at least.Established turn is recessed from breast roll (1) under the promotion of each turn that has just produced vertically.
Helical spring can also rotate several 180 ° wire rods on every side and made by being centered around breast roll (1).Under this situation, first turn has left and has been positioned at breast roll (1) and in order to the compression position between the final roller (3) of extruding, begins to prepare further shaping of acceptance, so that form desired final diameter, and produces final needed pitch.
When forming first turn, because rigidity, its diameter is greater than the diameter of its breast roll that centers on (1), has therefore produced the space that is used for pin below the pin (5), promptly pin is positioned at the space between turn and the breast roll (1), and contacts with the inside of turn.
Under the effect of pin (5), can realize promoting laterally turn forming the diameter of spring, and turn is along the advancing vertically of spring, thereby formed pitch.Power source in order to the pin (5) that forms diameter and turn pitch can be positioned on the axle (10) that is on support (11) appropriate location.
Axle (10) is equipped with the elbow spare (12) of the pin (5) of suitable shaping by the one end, can arrive the inner space of formed turn from the bottom, thus with turn in the pin (5) of side contacts can compress this turn.
Therefore, when our turning cylinder (10), the pin that has pushed turn promotes this turn towards the direction of spring forming, forms diameter thus.Therefore, under the motion vertically and the combination of its rotation of axle (10), we need combine the pitch of diameter and turn to be used to form needed spring (7).Perhaps pin (5) can be arranged on an end of an elbow spare (12) that is connected with axle (10), wherein said axle (10) is positioned on the appropriate location of support (14), to realize towards outside promotion turn, thereby form the diameter of spring, and can realize turn moving on the spring longitudinal forward movement direction by an auxiliary independent agency that has pin, thereby formation pitch, wherein said pin be positioned at one with the elbow spare that is connected of axle on, and this axle is positioned on the appropriate location of support.Not shown this auxiliary body in the accompanying drawing.
Preferably, can command, control and adjust by the motion of a suitable electronic computer pair of rollers and the motion of axle (10), wherein said axle can pass through elbow spare (12) and transmit motion to pin (5), we can import about producing the suitable variable and the index of final spring whereby, so just selected the diameter and the pitch of each turn, thus can be directly operating means correctly.
Beneficial effect of the present invention
By using this spring that is easy to produce, we can be achieved as follows described:
1. do not need to be provided with one group or two groups of rollers and spur wire rod, make wire rod advance to machining area from bobbin.These rollers, except manufacturing very costliness, they also can damage wire rod, and this is because these rollers only are to push wire rod on the position of a point, the rotation of wire rod and the winding around roller then simply are easy to realize, therefore can not cause damage to wire rod.
2. do not need as additive method wire rod to be aligned, this aligning is difficult to realize and the production cost costliness usually.
3. owing to be to be rotated round roller, because the weight inertia of bobbin self material, the resistance of pulling wire rod will come from the wire rod frictional force round roller.
4. utilizing roller that wire rod is advanced directly to form the method for spring diameter from straight wire rod, the heavy caused alternation resistance of bobbin will make the quality of product have problems, but this can't take place in the method for the invention.In existing method, need to adopt extraordinary motor to control the pay(useful) load position of wire rod.This has just produced extra-pay.And in the method for the invention, the powerful pulling force and the quality of spring are not subjected to the influence of all kinds of resistances, therefore can address this problem.
5. owing in initial spring, produced first constant diameter, therefore only need consume less frictional resistance and less energy for the spring diameter that will form subsequently.
6. owing to cancelled the pulling force roller of straightener and the rotation control mechanism of wire rod pay(useful) load position, therefore greatly saved the space.And method of the present invention is suitable for producing bull plant equipment (multi-head mechanical complexes) most.
Fig. 3 shows the device of the particular that constitutes described method.
The present invention is not subjected to as previously mentioned and occurs the restriction of embodiment in the accompanying drawings, and in the scope of the protection right that does not break away from the present invention and authorized, can realize the present invention with size in a variety of forms.In embodiments of the invention, the size of material that is adopted and single organ should be able to adapt to the needs of individual construction design.
In each claim, all comprise the technical characterictic that is occurred, can be quoted by other claims after these technical characterictics, described these technical characterictics not only can be in order to strengthening the understanding to claim, nor can influence the examination by the key element be familiar with in an embodiment.
Claims (10)
1. method of making spring by the wire rod of circular or other shaped cross, it is characterized in that making initial cylindrical spring (6) by wire rod earlier, the diameter of this helical spring and pitch are equal to or less than the minimum diameter or the pitch of final spring (7) respectively, wherein for the initial cylindrical spring (6) that has selected diameter, its each turn is all controllably promoted from the inboard laterally by a device that is fit to, the y direction that advances along spring simultaneously is pushed into, therefore can make initial diameter enlarge selected diameter with the turn that obtains final spring (7), the control that imposes on simultaneously same turn on the spring direction of advance makes this turn suitably crooked, thereby obtain the selected pitch of the turn of final spring (7), each new turn of the initial spring (6) that has produced by continuous adjusting can be produced final spring (7) whereby.
2. the method for claim 1 is characterized in that full out the turn of initial spring (6) further being processed before it is finished after wire rod has formed permanent bending corresponding to initial spring (6) diameter again.
3. the method for claim 1, it is characterized in that making on every side in the process of initial cylindrical spring (6) by spurring wire rod and wire rod being wrapped in suitable pivot roller (1), at first to utilize more than one roller (2), (3), (4) are squeezed in wire rod on the breast roll.
4. the method for claim 1, it is characterized in that by wire rod being wrapped on the rotation roller (1), utilize roller (2) simultaneously, (3), (4) suitable pressure is squeezed in wire rod on this rotation roller, so produce columniform spring, make also to produce similar function outside the bending wire and promote wire rod so that can guarantee powerful thrust.
5. the method for claim 1 is characterized in that forming in succession by self-movement the pitch and the diameter of each turn of final spring (7).
6. a wire rod that utilizes circular cross-section or other shaped cross is made the device of spring, it is characterized in that it is made up of following parts, promptly on its circumference, produce the center rotation roller (1) that pressure contacts with more than one roller, wherein said roller is in order to extruding, pulling and bent wire, so that it becomes initial spring (6); And the one end has the elbow spare (12) of suitable pin (5), this elbow spare can push turn from the interior bottom side of formed turn, elbow spare (12) also links to each other with an axle (10) that is positioned on the suitable support (11), this axle can controllably rotate around its axis, make the elbow spare that has pin (5) towards outer side shifting whereby, and can be controllably mobile along the direction of axle of spring simultaneously.
7. make the device of spring as the wire rod that utilizes circular cross-section or other shaped cross as described in the claim 6, it is characterized in that to be provided with two elbow spares that link to each other with suitable bolster with pin respectively in its end, wherein each axle all is designed to compress the turn of initial spring (6), and along laterally direction extruding is moved turn from the turn inboard, with the selected coil diameter of process that forms final spring (7), and second pin also is designed to compress the turn of initial spring (6), and turn is moved, along the y direction that spring advances with the selected turn pitch of process that forms final spring (7).
8. make the device of spring as the wire rod that utilizes circular cross-section and other shaped cross as described in the claim 6, it is characterized in that cross section, more than one roller (2) can be set according to wire rod, (3), (4) contact with breast roll (1), are preferably 3.
9. making the device of spring as the wire rod that utilizes circular cross-section and other shaped cross as described in the claim 6, it is characterized in that can also making other rollers (2) except making home roll (1) can move, moves selectively in (3), (4).
10. make the device of spring as the wire rod that utilizes circular cross-section and other shaped cross as described in the claim 6, it is characterized in that can be by a suitable motor computer to roller (1) movably, (2), (3), (4) motion and to can making the motion of the axle (10) that pin (5) moves command, control and adjust by elbow spare (12), the index of necessity that we can be by the final spring (7) processed to the electronic computer input is selected the diameter and the pitch of each turn.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GR20030100404A GR1006845B (en) | 2003-10-02 | 2003-10-02 | Spring-manufacturing method using wire of round or differetntly-shaped calibre |
| GR20030100404 | 2003-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1863618A true CN1863618A (en) | 2006-11-15 |
| CN100408222C CN100408222C (en) | 2008-08-06 |
Family
ID=37390781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800287025A Expired - Fee Related CN100408222C (en) | 2003-10-02 | 2004-10-01 | Method and system of production of springs from wire of circular or other cross-sectional area |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20080245122A1 (en) |
| EP (1) | EP1689541B1 (en) |
| JP (1) | JP2007507357A (en) |
| CN (1) | CN100408222C (en) |
| AT (1) | ATE380613T1 (en) |
| BR (1) | BRPI0414949A (en) |
| DE (1) | DE602004010715D1 (en) |
| EA (1) | EA008178B1 (en) |
| GR (1) | GR1006845B (en) |
| WO (1) | WO2005030411A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101896296B (en) * | 2007-12-20 | 2013-01-23 | 大圆钢业株式会社 | Apparatus and method for manufacturing barrel coil spring |
| CN102223963B (en) * | 2008-11-25 | 2014-03-12 | 利美公司 | Apparatus and method for producing springs |
| CN104822473A (en) * | 2012-12-14 | 2015-08-05 | 新确有限公司 | Spiral spring manufacturing method |
| CN106334773A (en) * | 2016-11-29 | 2017-01-18 | 浙江心梦享家居有限公司 | The roll bending adjusting mechanism in S-spring roll bending machine |
| CN106334774A (en) * | 2016-11-29 | 2017-01-18 | 浙江心梦享家居有限公司 | The roll bending mechanism in S-spring roll bending machine |
| CN106345939A (en) * | 2016-11-29 | 2017-01-25 | 浙江心梦享家居有限公司 | S spring roll bending machine |
| CN107735191A (en) * | 2015-06-25 | 2018-02-23 | 欧立美克株式会社 | Helical spring manufacture method and coil spring producing apparatus |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4913703B2 (en) * | 2007-10-31 | 2012-04-11 | 旭精機工業株式会社 | Coil spring manufacturing machine and coil spring manufacturing method |
| EP2390566A1 (en) | 2010-05-31 | 2011-11-30 | Siemens Aktiengesellschaft | Device for producing fixture units for steam generator pipes |
| KR101419698B1 (en) * | 2014-03-25 | 2014-07-21 | 대원강업 주식회사 | hot formed coiling machine |
| RU2647965C2 (en) * | 2016-09-13 | 2018-03-21 | Общество с ограниченной ответственностью "Научно-производственный центр "Пружина" | Method for processing of dead coil of spring and roboticized complex for its implementation |
| CN108838257A (en) * | 2018-06-16 | 2018-11-20 | 南京溧水丽华弹簧厂 | A kind of equipment for producing spring ring |
| CN111531483B (en) * | 2020-05-08 | 2021-08-03 | 上海弘智金属制品有限公司 | Clamp device for fixing mechanical stability by means of thrust reverse operation |
| CN113414326B (en) * | 2021-06-24 | 2024-04-19 | 黄山立铖精密弹簧有限公司 | Forming device for cylindrical spring production and forming method thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3818954A (en) * | 1972-04-28 | 1974-06-25 | Sickinger Co H | Wire coiling tool |
| SU479545A1 (en) * | 1974-02-25 | 1975-08-05 | Предприятие П/Я Р-6702 | Tool for winding springs to lathes |
| SU902943A1 (en) * | 1980-05-23 | 1982-02-07 | Предприятие П/Я А-7162 | Apparatus for coiling springs |
| JPS5725233A (en) * | 1980-07-18 | 1982-02-10 | Nhk Spring Co Ltd | Formation of coil spring |
| SU988430A1 (en) * | 1981-06-30 | 1983-01-15 | Предприятие П/Я А-1923 | Apparatus for winding springs in lathes |
| US4700558A (en) * | 1986-04-11 | 1987-10-20 | Leggett & Platt, Incorporated | Wire coiling method and device |
| GB2220600B (en) * | 1988-06-30 | 1992-01-08 | T & N Technology Ltd | Method for the manufacture of piston rings |
| US5444905A (en) * | 1994-03-14 | 1995-08-29 | Simmons Company | Apparatus for manufacturing mattresses and box springs |
| CN2254786Y (en) * | 1996-06-12 | 1997-05-28 | 张树煜 | Spring making machine with improved mechanism for adjusting the distance between rings |
| SE508675C2 (en) * | 1997-01-27 | 1998-10-26 | Multivent Consult Ab | Device for bending spring for spring mattresses |
| IT1313800B1 (en) * | 1999-10-19 | 2002-09-23 | Simplex Rapid Di Boschiero Cor | METHOD TO CHANGE IN A CONTINUOUS AND CONTROLLED WAY DURING THE PRODUCTION OF SPRINGS, THEIR INITIAL TENSION AND THE MACHINE REALIZED |
| JP4693211B2 (en) * | 2000-07-31 | 2011-06-01 | 中央発條株式会社 | Method for manufacturing inclined coil spring |
-
2003
- 2003-10-02 GR GR20030100404A patent/GR1006845B/en not_active IP Right Cessation
-
2004
- 2004-10-01 EA EA200600569A patent/EA008178B1/en not_active IP Right Cessation
- 2004-10-01 DE DE602004010715T patent/DE602004010715D1/en not_active Expired - Lifetime
- 2004-10-01 US US10/574,360 patent/US20080245122A1/en not_active Abandoned
- 2004-10-01 AT AT04769060T patent/ATE380613T1/en not_active IP Right Cessation
- 2004-10-01 WO PCT/GR2004/000047 patent/WO2005030411A1/en active IP Right Grant
- 2004-10-01 JP JP2006530609A patent/JP2007507357A/en active Pending
- 2004-10-01 BR BRPI0414949-1A patent/BRPI0414949A/en not_active IP Right Cessation
- 2004-10-01 EP EP04769060A patent/EP1689541B1/en not_active Expired - Lifetime
- 2004-10-01 CN CNB2004800287025A patent/CN100408222C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101896296B (en) * | 2007-12-20 | 2013-01-23 | 大圆钢业株式会社 | Apparatus and method for manufacturing barrel coil spring |
| CN102223963B (en) * | 2008-11-25 | 2014-03-12 | 利美公司 | Apparatus and method for producing springs |
| CN104822473A (en) * | 2012-12-14 | 2015-08-05 | 新确有限公司 | Spiral spring manufacturing method |
| CN107735191A (en) * | 2015-06-25 | 2018-02-23 | 欧立美克株式会社 | Helical spring manufacture method and coil spring producing apparatus |
| TWI624316B (en) * | 2015-06-25 | 2018-05-21 | Orii & Mec Corp | Coil spring manufacturing method and coil spring manufacturing device |
| CN107735191B (en) * | 2015-06-25 | 2019-08-30 | 欧立美克株式会社 | Helical spring manufacturing method and coil spring producing apparatus |
| CN106334773A (en) * | 2016-11-29 | 2017-01-18 | 浙江心梦享家居有限公司 | The roll bending adjusting mechanism in S-spring roll bending machine |
| CN106334774A (en) * | 2016-11-29 | 2017-01-18 | 浙江心梦享家居有限公司 | The roll bending mechanism in S-spring roll bending machine |
| CN106345939A (en) * | 2016-11-29 | 2017-01-25 | 浙江心梦享家居有限公司 | S spring roll bending machine |
Also Published As
| Publication number | Publication date |
|---|---|
| US20080245122A1 (en) | 2008-10-09 |
| JP2007507357A (en) | 2007-03-29 |
| GR1006845B (en) | 2010-07-05 |
| CN100408222C (en) | 2008-08-06 |
| EA200600569A1 (en) | 2006-08-25 |
| EA008178B1 (en) | 2007-04-27 |
| ATE380613T1 (en) | 2007-12-15 |
| WO2005030411A1 (en) | 2005-04-07 |
| EP1689541A1 (en) | 2006-08-16 |
| EP1689541B1 (en) | 2007-12-12 |
| BRPI0414949A (en) | 2007-03-27 |
| GR20030100404A (en) | 2005-06-15 |
| DE602004010715D1 (en) | 2008-01-24 |
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