| Patents for B21D 25 - Working sheet metal of limited length by stretching, e.g. for straightening (421) |
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| 06/08/2011 | CN101690960B High-flexibility multi-head stretching machine |
| 06/02/2011 | US20110126607 Stretch-forming device and method for stretch forming a workpiece and stretch-formed part |
| 06/02/2011 | US20110126606 Device and process for producing or processing workpieces from a preform, in particular for integrally forming internal profiles or internal tooth systems |
| 06/01/2011 | CN102078896A Stretch-forming device and method for stretch forming a workpiece and stretch-formed part |
| 05/04/2011 | CN201815837U Strip continuous calendar for composite board core of solar heat collector with strip positioning device |
| 04/14/2011 | WO2011041984A1 Multiple clamp type stretching and forming machine |
| 04/06/2011 | CN102000731A Method for stamping dash middle board of automobile |
| 03/01/2011 | US7896353 Large diameter seals |
| 02/16/2011 | CN201744547U System for incrementally forming workpiece |
| 02/02/2011 | CN101961746A Multi-screw local flexible drawing and pressing integrated device |
| 01/26/2011 | CN201720348U Multifunctional solar-energy slab core continuous press |
| 01/19/2011 | CN101947597A Gradual die-less forming method |
| 01/12/2011 | CN201702236U Roll bite adjusting device for bending rolls of straightening and withdrawal machine set |
| 01/05/2011 | CN201693051U Single-point mould-less forming movable supporting device |
| 12/15/2010 | EP2259883A1 Method for controlling the flow of material when deep-drawing a workpiece, and deep-drawing device |
| 12/02/2010 | WO2010136683A1 Method for punching a sheet metal element, in particular the frame of an automobile |
| 11/24/2010 | CN101896294A Energization heating device and hot press forming device having it and conduction heating method |
| 10/26/2010 | CA2564949C Gripping apparatus with quickly changeable jaw inserts, methods for gripping a workpiece and stretch form machine with such an apparatus |
| 10/21/2010 | US20100263429 Apparatus And Method For Attaching Edging To A Sheet |
| 10/13/2010 | CN201603795U 高柔性多头拉形机 Highly flexible long stretch forming machine |
| 10/06/2010 | EP2236226A1 Energization heating device and hot press forming device having it and conduction heating method |
| 09/30/2010 | US20100242563 metal folding apparatus |
| 09/15/2010 | CN101829722A Device for dieless progressive molding of metal plate |
| 07/01/2010 | US20100162783 Split strap |
| 06/09/2010 | CN101259510B Stamping method for using high-strength steel plate to manufacture automobile rear bumper steel girder |
| 06/02/2010 | CN101249539B Device and method for operating sheet stretching straightener |
| 05/06/2010 | WO2010003538A8 Method for forming a sector for a nacelle lip skin |
| 04/07/2010 | CN101690960A High-flexibility multi-head stretching machine |
| 02/03/2010 | CN201394605Y Composite bellows forming mold with adjustable edge lines |
| 01/14/2010 | WO2010003538A1 Method for forming a sector for a necelle lip skin |
| 01/14/2010 | CA2730356A1 Method for forming a sector for a nacelle lip skin |
| 12/30/2009 | CN201371194Y Dieless forming device |
| 12/24/2009 | DE102008029326A1 Metal band straightening method for industry, involves causing additional tension in metal band by tension increasing units such that tension lies above yield strength in metal band between tension increasing units |
| 12/17/2009 | US20090308127 Stretching device |
| 12/09/2009 | CN201357188Y Novel shaping device for open cold-forming sectional steel tip |
| 11/05/2009 | US20090272167 Pulsed electro-hydraulic calibration of stamped panels |
| 10/15/2009 | WO2009124860A1 Method for controlling the flow of material when deep-drawing a workpiece, and deep-drawing device |
| 10/14/2009 | EP2107952A1 Device for even stretch-forming of workpieces |
| 10/07/2009 | CN101549454A Method for producing aluminum alloy plate |
| 08/05/2009 | CN101500724A A segmented drawing die with a binding collar |
| 08/05/2009 | CN101497095A Method for judging setting of draw-bead in part drawing and moulding |
| 07/08/2009 | EP2076341A2 Apparatus for and method of forming curved panels |
| 06/18/2009 | WO2009075134A1 Energization heating device and hot press forming device having it and conduction heating method |
| 06/03/2009 | CN201249233Y Stainless steel band tension leveller and technique lubricating system thereof |
| 04/22/2009 | CN101412057A Jacking bending drawframe |
| 04/14/2009 | US7517590 Metal band as inlay for trim strips or sealing strips |
| 03/26/2009 | WO2009036871A1 Method and apparatus for bending or linearly rolling out profiles with axle-free mini-roll rolling bodies |
| 03/25/2009 | CN201211542Y Metal pail full-automatic bunghole shaper |
| 02/25/2009 | CN201198014Y Aluminum plate edge discharge mould for special-shaped curved surface quick former |
| 01/28/2009 | EP2018913A1 Press forming method for aluminum alloy sheet and pressing device |
| 10/23/2008 | US20080256779 Hemming working method and hemming working device |
| 10/08/2008 | EP1976651A1 Active reconfigurable stretch forming |
| 10/08/2008 | CN101279340A Mold for discharging edge of aluminum plate for special-shaped curved face quick former |
| 09/25/2008 | DE102007009139B3 Verfahren und Vorrichtung zum Betreiben eines Plattenstreckers Method and apparatus for operating a plate straightener |
| 09/23/2008 | CA2365771C Method and apparatus for forming a metal sheet under elevated temperature and air pressure |
| 09/10/2008 | CN101259510A Stamping method for using high-strength steel plate to manufacture automobile rear bumper steel girder |
| 08/27/2008 | CN101249539A Deformation compensation in means for clamping material to be stretched |
| 07/31/2008 | US20080178651 Loft and Lie Adjustment Tool for Golf Clubs |
| 07/03/2008 | WO2008044021A3 Apparatus for and method of forming curved panels |
| 05/27/2008 | CA2304213C Stretch draw die and method |
| 05/06/2008 | US7368175 Metal band as an inlay for trim strips or sealing strips |
| 04/17/2008 | WO2008044021A2 Apparatus for and method of forming curved panels |
| 04/10/2008 | WO2008040495A1 Device for even stretch-forming of workpieces |
| 03/19/2008 | EP1900829A1 Process and device for tempering steel strips |
| 01/31/2008 | WO2008013507A1 A segmented drawing die with a binding collar |
| 11/28/2007 | CN100351026C Method and apparatus for in-situ leveling of progressively formed sheet metal |
| 11/06/2007 | US7290425 Gripping apparatus and method |
| 09/20/2007 | DE10134179B4 Verfahren und Einrichtung zur Herstellung im Streckformverfahren eines zweifach gekrümmten blechförmigen Gegenstands Method and apparatus for producing the stretch forming process of a doubly curved plate-shaped object |
| 08/22/2007 | EP1820578A1 Stretch forming method for a sheet metal skin segment having compound curvatures |
| 08/22/2007 | CN1332770C Method and equipment for large and middle sized thin plate roll formation |
| 06/27/2007 | CN1322941C Method and equipment for producing ring metal strap |
| 05/29/2007 | CA2327499C Rolling apparatus |
| 05/03/2007 | DE10063287B4 Verfahren zum Umformen eines Metallbleches A method for forming a metal sheet |
| 05/01/2007 | US7210323 Binder apparatus for sheet forming |
| 04/17/2007 | US7204005 Manufacturing method of endless metal belt and manufacturing apparatus of endless metal belt |
| 04/11/2007 | EP1771261A1 Gripping apparatus with quickly changeable jaw inserts, methods for gripping a workpiece and stretch form machine with such an apparatus |
| 03/01/2007 | CA2556625A1 Constructive element, formed by a sheet having a constant thickness, whose section comprises an unfolded region with an element rotated 180 degrees with regard to its rotation prior to being unfolded; this unfolding means that material is saved in the construction of constructive elements such as profiles, without damaging their structural performance |
| 01/02/2007 | US7155949 Fluid cell press with a gripping arrangement and method and use of the press |
| 11/29/2006 | EP1726377A1 Method for forming a double longitudinally and transversally curved sheet, and longitudinal stretch forming press for carrying out the method |
| 10/10/2006 | US7117708 Die set for press forming metal sheet and press forming method of metal sheet |
| 09/27/2006 | EP1585608B1 Method and apparatus for in-situ leveling of progressively formed sheet metal |
| 07/26/2006 | CN1265992C Process for prefabricating cold-drawn plate for side wall large plate of passenger train |
| 07/04/2006 | US7069761 Gripping apparatus and method |
| 06/14/2006 | CN1259160C Method for eliminating strain of spun work and forming press |
| 06/08/2006 | US20060117826 Fluid cell press with a gripping arrangement and method and use of the press |
| 04/06/2006 | US20060070420 Method of drawing a composite wire |
| 04/05/2006 | EP1319133B1 Sheet metal clamp |
| 04/05/2006 | CN1248793C Forming machine for stretching metal steel unit by tool or 'mould' |
| 02/22/2006 | CN1738690A Method and apparatus for in-situ leveling of progressively formed sheet metal |
| 02/15/2006 | CN1733383A Method and equipment for large and middle sized thin plate roll formation |
| 02/02/2006 | DE10113668B4 Plattenstreckerkopf Plate straightener head |
| 01/17/2006 | CA2174605C Method of working a hot-rolled strip |
| 11/24/2005 | WO2005110639A1 Gripping apparatus with quickly changeable jaw inserts, methods for gripping a workpiece and stretch form machine with such an apparatus |
| 11/10/2005 | US20050247100 Gripping apparatus and method |
| 11/10/2005 | US20050247099 Gripping apparatus and method |
| 10/19/2005 | EP1585608A1 Method and apparatus for in-situ leveling of progressively formed sheet metal |
| 08/11/2005 | WO2003095186A9 Fluid cell press with a gripping arrangement and method and use of the press |
| 08/10/2005 | EP1560668A1 Method and apparatus for forming three-dimensional shapes in a sheet metal |
| 07/26/2005 | CA2364083C Process for the wall ironing of a product in sheet form, and a wall ironing tool |
| 06/22/2005 | EP1542860A1 Fluid cell press with a gripping arrangement and method and use of the press |