Class / Patent application number | Description | Number of patent applications / Date published |
072057000 | With actuated tool engaging work | 31 |
20080202184 | Process for Fabricating Large-Surface metal Plate Into a Shaped Part, Such as an Outer Skin Panel of a Vehicle Body - A process for forming a large-surface metal plate into a shaped part includes using a moulding tool. The tool includes a reservoir filled with incompressible fluid work medium, clamping jaws and a shaping die movable towards the reservoir. Profiling elements, corresponding to each other, are configured in the interior of the reservoir and on the outer edge of the shaping die. The external high pressure punching by means of the shaping die moved forward against the high pressure of the fluid work medium is ended, when the shaping die has reached the profiling elements in the reservoir, by the pressure of the fluid work medium in the reservoir being reduced. The boundary sections of the metal plate are then formed between the profiling elements, pressed against each other, of the shaping die and the reservoir, at low pressure of the fluid work medium or at zero pressure. | 08-28-2008 |
20080264131 | METHOD AND APPARATUS FOR GAS MANAGEMENT IN HOT BLOW-FORMING DIES - A method and apparatus for forming a sheet of ductile material by superplastic forming is disclosed. The method is directed to first creating a pre-form by mechanical forming in which the pre-form is created with a die and punch. Thereafter the pre-form is subjected to gas pressure in a forming cavity to complete formation of the part. A metallic gasket is provided to ensure that no pressurized gas escapes from the forming cavity. | 10-30-2008 |
20080282757 | DEVICE FOR HYDROFORMING METAL ELEMENTS - A hydroforming device includes a top die and a bottom die, set between which is a metal element to be formed and which are pressed against one another during a hydroforming process. A relative movement of the two dies between the open condition and the closed condition is controlled by a hydraulic cylinder. The opening of the two dies during the hydroforming process, when the forming cavity is filled with liquid at a high pressure, is prevented by applying on the two dies a force generated by means of two wedge-shaped members, which are horizontally mobile, controlled by respective actuator means and having inclined surfaces in contact with corresponding inclined surfaces of a vertically mobile member. The mobile member and the hydraulic cylinder are set operatively in series between one and the same die of the two dies and the base of the hydroforming cell. On the opposite side, the two dies rest against a top cross member of the fixed structure of the hydroforming cell, which is rigidly connected to the base by means of two shoulders so that the vertical forces that are generated during the hydroforming process are discharged on the shoulders, which are subject to tensile stress. | 11-20-2008 |
20080314108 | PRESSING METHOD, METHOD OF MANUFACTURING PUNCHING PLATE, PUNCHING PLATE, AND LIQUID EJECTING HEAD - A pressing method by which through holes are formed using a punch in a target plate material having a first face and an opposite second face. When the target plate material is punched with the punch from the second face in such an orientation that the first face of the target plate material is in contact with an elastic base, depressed portions are formed. The depressed portions are curved toward a direction in which the through holes are punched to sink downward in the form of funnel as they approach peripheries of the through holes, and are located at peripheral portions around the through holes that are formed in the target plate material in such a manner that the peripheral portions are pushed in toward a deeper side in a thickness direction of the base against an elastic force of the base and are deformed. | 12-25-2008 |
20090044585 | Method of Working in Pressing Dies Using Marking Paint - The method according to the invention for working in pressing dies using marking paint wherein a fluorescent marking paint is used. This enables the operator in the manual working in of pressing dies to identify the painted tool surface without error and error-free detection of the tool surface occupied by marking paint is also possible by means of suitable devices (camera) for working-in of the pressing die which is done more or less automated. | 02-19-2009 |
20090120150 | Controllable Fluids in Pipe Bending - A method for shaping partially enclosed structures such as pipes, the method comprising: filling the structure with ERF, applying an electrical field to the ERF to increase its viscosity, shaping the structure, removing the field and removing the ERF from the structure. | 05-14-2009 |
20090120151 | Press-Forming Device and Press-Forming Method - A press-forming device has a punch ( | 05-14-2009 |
20090235708 | HOT FORMING PROCESS FOR METAL ALLOY SHEETS - Magnesium and other metal alloy sheet materials are deformed at hot forming temperatures into vehicle body panels and other articles. Many such hot forming operations are improved in speed and product quality by predetermining a static recrystallization temperature of the sheet material. As the sheet material is being heated to its hot forming temperature, deformation is commenced below the static recrystallization temperature. As heating and deformation are continued, dynamic recrystallization of the workpiece occurs and deformation may proceed faster and to a greater extent. | 09-24-2009 |
20100257910 | Method and Apparatus for Reducing Force Needed to Form a Shape from a Sheet Metal - An apparatus comprising a platform, a stylus, and an ultrasonic energy generation system. The platform may be capable of holding a sheet of material. The stylus may be capable of impinging the sheet of material to incrementally form a shape for a part. The ultrasonic energy generation system may be capable of sending ultrasonic energy into at least a portion of the sheet of material in a location on the sheet of material where the stylus impinges the sheet of material. | 10-14-2010 |
20110061433 | METHOD FOR PRODUCING THE ROUND EDGE OF A PART, DEVICE FOR CARRYING OUT SAID METHOD AND A STRIKER USED THEREIN - The inventive method involves deforming the extremities of a plate, which has a rectangular edge and is disposed between the working surface of strikers, by ultrasonic forging with the aid of the strikers, simultaneously moving the plate in a transverse direction with respect to the longitudinal axes of the strikers and turning the strikers. Each striker is provided with a groove with a curvilinear generatrix which is made on the surface thereof with a variable radius R. The width of the plate is reduced by a value Δ=R(1−π/4), wherein R is the variable radius value at a point where the ultrasonic forging of the plate is carried out. The circumferential speed V | 03-17-2011 |
20110067468 | Seal for Fluid Forming Tools - An electro-hydraulic forming tool for forming a sheet metal blank in a one-sided die has first and second rigid rings that engage opposite sides of a sheet metal blank. The rigid rings are contained within slots on a die portion and a hydraulic force applicator portion of the forming tool. The seals are either resiliently biased by an elastomeric member or inherently resiliently biased into contact with the blank. | 03-24-2011 |
20120160004 | Method of Reducing Cycle Time in a Hydro-Mechanical Forming Process and a Tool for Hydro-Mechanically Forming a Part - A hydro-forming tool for use in a method of forming a blank into a liquid filled chamber. The chamber is formed by a container ring and a moveable wall that together define a variable volume chamber for containing the liquid. The wall is moveable relative to the container ring to provide a chamber in which the volume of liquid required to back up the blank is minimized. The liquid reduces friction at the chamber entry rim. Liquid may be ported through a counter punch to hydro-form the blank into the detail forming areas. | 06-28-2012 |
20120180542 | Method and Apparatus for Sharp Flanging and Trimming Sheet Metal Panels - A method and apparatus for forming flanges on a panel. The flanges may be weld flanges or hem flanges. The flanges stretch to reduce spring back and may be trimmed. The trimming operation is performed after the flange area is formed on the panel. | 07-19-2012 |
20120260709 | INTERNAL MANDREL AND METHOD - A method and system for forming a part from a workpiece including a hollow portion, using a mandrel and a conventional press such as a stamping press includes filling the hollow portion of the workpiece with a mandrel material and transforming the mandrel material to form a mandrel. The mandrel material is removable from the formed part and may be recycled to form a mandrel for another workpiece. | 10-18-2012 |
20130298628 | Appratus and Method for Manufacturing a Large-Caliber Product Using Hydroforming - An apparatus and method for manufacturing using a hydroforming process. The apparatus includes: upper and lower molds; first and second axial punches which are disposed on opposite sides of the steel substance so as to be movable towards each other and which have front surfaces configured so as to be insertable into each other; first and second pressurization cylinders which move the first and second axial punches towards each other and insert them into each other, thus forming a sealing space defined by the first and second axial punches and a pressurization space defined by the steel substance and the first and second axial punches; and a control unit which, through an oil-pressure passage formed in at least one of the first and second axial punches, supplies fluid into the pressurization space to pressurize the steel substance, thus forming the large caliber product. | 11-14-2013 |
20140069160 | Low Friction End Feeding in Tube Hydroforming - An end plunger for end feeding during a hydroforming process (such as tube hydroforming) has at least one releasable seal. The effect of the releasable seal is that it avoids pressurizing the blank in a nip area, thereby reducing friction and wear, and allowing increased end feeding with a given end feeding force. The releasable seal may be actuable, for sealing or releasing. The plunger may be modular or monolithic. A kit and method may incorporate the end plunger. | 03-13-2014 |
20180021830 | METHOD FOR FORMING A TUBULAR BODY, UNDULATING TUBULAR BODY AND USE OF SAME | 01-25-2018 |
072058000 | Expanding hollow work | 14 |
20080236230 | Hydroforming Method and Apparatus - A hydroforming method and apparatus. | 10-02-2008 |
20080307848 | Bulging Method and Apparatus - A bulging apparatus has a heating station, a tube expanding station, a preforming station, and a main forming station. A straight tube as a workpiece is gripped by first holding mechanisms or second holding mechanisms, and delivered between the stations as the first holding mechanisms or second holding mechanisms are displaced. During a preforming process and a main holding process, both the first holding mechanisms and second holding mechanisms can be lifted and lowered vertically and can be moved horizontally. | 12-18-2008 |
20090126436 | TUBULAR EXPANSION DEVICE AND METHOD OF FABRICATION - The invention comprises a device for expanding tubular members to a controlled diameter and its method of fabrication. The device includes an expandable bladder held in a convoluted form. After the device is inserted into a cylindrical tube to be evenly expanded, the bladder is expanded by hydraulic pressure to a controlled maximum diameter. It is then deflated so the device can then be moved to another location and reused. The bladder is formed from a flexible impervious material having integral reinforcing fibers. It is initially formed in a fully expanded configuration over a convoluted mandrel and a removable cylindrical shell. When the shell is removed vacuum or external pressure draws the bladder against the mandrel. The bladder is overmolded with a resilient cover to hold it in reduced form until pressurized. The bladder cover prevents the bladder from kinking during the expansion. | 05-21-2009 |
20090178455 | Method And Device For Producing Hollow Profiled Elements - The invention relates to a device for shaping a blank into a hollow profiled element comprising at least one base plate, onto which the blank that is to be shaped can be placed, at least one die core for the hollow profiled element and at least two die halves for shaping the blank into the hollow profiled element, as well as a method for producing a hollow profiled element with at least one molded-on stiffening and/or functional element made from a blank. The aim of providing a device for producing a hollow profiled element comprising at least one molded-on stiffening and/or functional element made from a blank, by means of which corresponding hollow profiled elements can be produced at low cost, which at the same time ensure high reliability of the process when different hollow profiled elements are joined together, is achieved with a generic device, wherein at least one die ( | 07-16-2009 |
20100000280 | EXPANDABLE MEMBER WITH WAVE INHIBITOR AND METHODS OF USING THE SAME - A member has a wave inhibitor adapted to control the effects of a wave of longitudinally displaced material positioned ahead of an expansion mandrel used to expand the member. The wave inhibitor has a decreasing transverse cross-sectional area to diminish the effects attributable to the wave, such as workpiece distortions, material upset of the workpiece, lengthening of the member, and excessively high strains in the workpiece. The wave inhibitor can also induce radially compressive stresses in the workpiece and produce an interference fit. | 01-07-2010 |
20100077818 | Ball autofrettage - The invention relates to a method of increasing the dynamic pressure resistance of a metal component with a tubular inner space, in which a hard metal ball is forced under high pressure through the interior of the tubular inner space, wherein the hard metal ball has a diameter that is greater than the inside diameter of the tubular inner space before the hard metal ball is forced through. | 04-01-2010 |
20100319428 | METHOD FOR HYDROFORMING HOLLOW PROFILE METAL WORKPIECES - A method for hydroforming hollow metal workpieces includes submerging the same in a reservoir of hydraulic fluid. A press is provided having a hydroforming station located within the reservoir and includes a forming cavity configured to receive the fluid filled workpiece and create a fluid cushion spaced between the outside of the workpiece and the inside of the forming cavity. Sealing mandrels supply high-pressure hydraulic fluid to the interior of the workpiece which hydroform the same to the shape of the final part. The outward flow of fluid from the fluid cushion space is controlled, along with the associated pressure, to maintain the fluid cushion at least until such time as the mandrel pushing step concludes, thereby alleviating friction and adhesion between the formed part and the forming cavity. | 12-23-2010 |
20110067469 | T-FITTING MANUFACTURING METHOD AND TOOL - A punch for forming opposite ends of a copper tube into a T includes a tapered or shovel-nose such that the spacing between the ends of the opposed punches is reduced, thereby reducing the excess copper remaining in the T once formed. A method of forming the fitting employs the shovel-nose punches in a hydro-forming process to accommodate such results. | 03-24-2011 |
20110167886 | Methods of pressure forming metal containers and the like from preforms having wall thickness gradient - A method of forming a bottle-shaped or other contoured metal container by providing a hollow metal preform having a closed end and a wall thickness that decreases progressively in a direction away from the closed end, and subjecting the preform to internal fluid pressure to cause the preform to expand against the wall of a die cavity defining the desired container shape. The method may be employed in pressure-ram-forming procedures wherein a punch is advanced by means of a backing ram into the die cavity to displace and deform the closed end of the preform. | 07-14-2011 |
20130098129 | PROCESS FOR PRE-FORMING CYLINDRICAL TUBES INTO TUBULAR MEMBERS HAVING SHARP CORNERS - A method of forming a tubular member with portions having finished corners formed in a hydroforming operation by initially forming a pre-form that includes sharp corners. The pre-form includes bulges of the tube material between the sharp corners that flow toward the intended corner locations as the tubular member is hydroformed. The bulges may be external ribs or internal recesses. | 04-25-2013 |
20130213105 | METHOD AND APPARATUS FOR PRESSURE EXPANSION OF TUBING IN COIL ASSEMBLAGE - A tube pressure expansion device for expanding in unison tubes on a workpiece coil having plural fins. A coil holder holds the workpiece coil. A pressure expansion manifold has plural cavities each configured to receive a free end of a tube on the workpiece coil. An interior wall surface in each cavity has a tapered wall surface. A hollow tapered bullet is provided in each cavity and is configured for entering a tube opening at each free end for effecting an expansion of each free end to urge the material of each free end into a clamped and sealed relation with the interior wall surface in each cavity. A pressurized fluid is supplied to an interior of the hollow tapered bullet to effect a pressurization of the interior of the tubes to effect an expansion of the tubes into an interference fit with the fins on the workpiece coil. | 08-22-2013 |
20140076016 | PIPE MANUFACTURING METHOD AND HYDROFORMING MOLD THEREOF - A hydroforming mold includes a lower die holder, a lower die, a pair of upper dies, a back pressure die, an upper die holder, and a pair of axial feed push rod assemblies. The lower die is disposed in a groove base of the lower die holder. A lower mold cavity for receiving a pipe blank is provided on the lower die. The two upper dies are clamped on the lower die, and can move along the top portion of the lower die. The back pressure die is disposed between the two upper dies. The axial feed push rod assemblies are respectively sealed at an end portion of the pipe blank and the two upper dies. Each of the axial feed push rod assemblies has a runner for introducing fluid into the pipe blank, so as to axially push the two upper dies to move close to each other. | 03-20-2014 |
20150101380 | HYDROFORMED BOTTOM EXPANSION PROCESS AND APPARATUS - An apparatus, and associated process, expands a wall of an associated metal container. The apparatus includes a holder for retaining at least a portion of the metal container. A first tool has a first surface mounted for movement relative to the holder for selective advancement toward and dimensioned to engage at least a portion of the associated metal container. The first tool includes a seal so that fluid received in the associated metal container is pressurized and used to apply an expanding force to the associated metal container as the first tool advances therein. A bubble is formed in the bottom wall, and in a second station, the combination of fluid pressure and metal forming surfaces make the final configuration of the bottom wall. | 04-16-2015 |
20160023261 | Tool for Preforming a Tube for Subsequent Internal High Pressure Forming, as Well as a Method for Producing Such a Tool and For Producing a Component By Internal High Pressure Forming - A tool is provided for preforming a metallic starter tube section for subsequent internal high pressure forming in order to produce a tubular IHF-component. The tool includes a plurality of tool sections that can move relative to one another and that delimit, between them, a shaping cavity for receiving and forming the starter tube section. The cavity has a contour which is both derived from the shape of the IHF component to be produced and adapted to the circumference of the starter tube section to be formed, such that each cavity cross section perpendicular to a cavity longitudinal axis predefined by the starter tube section corresponds to the cross-sectional shape of the IHF component cross-section in the same position, reduced in its cross-sectional circumference to exactly the circumference of the starter tube section. A method is provided for producing such a tool, and a method is provided for producing a tube-like IHF component using such a tool. | 01-28-2016 |