Class / Patent application number | Description | Number of patent applications / Date published |
072350000 | With application of frictional restraining force to work during deformation | 23 |
20080202192 | Pressing device for forming steel sheet blanks into clips - A pressing device for forming steel sheet blanks into clips, which comprise curved planking elements and rectilinear stringer elements for connecting a fuselage cell skin to a stringer and to an annular rib in an aircraft fuselage, comprises at least one curved upper tool, at least one curved lower tool, at least one rectilinear upper tool, and at least one rectilinear lower tool. A steel sheet blank is receivable and formable between the at least one curved upper and lower tools and the at least one rectilinear upper and lower tools. The at least one curved upper and lower tool each comprises an upper and lower convexity surface designed to essentially correspond to each other in order to form the curved planking element in a single stroke surface model forming process by simultaneously bending and stamping. The at least one rectilinear upper tool and the at least one rectilinear lower tool each comprises an upper and lower bending surface designed to correspond to each other in order to form the rectilinear stringer element. | 08-28-2008 |
20080209974 | Metal Blank with Binder Trim Component and Method - A metal blank that includes a binder trim component having at least one cut edge with a non-linear section. The creation of the non-linear section simultaneously forms a corresponding section in a binder trim component of an adjacent metal blank so that binder material can be shared therebetween. This reduces the amount of scrap metal, as the binder trim component is subsequently cut off and discarded. Furthermore, the non-linear section can include one or more strategically placed formations, such as projections, recesses, flat sections, etc., that cause it to be non-uniform along its length and to be specifically tailored to the manufacturing requirements of the part being formed. | 09-04-2008 |
20080264138 | BEAD FORMING UNIT FOR PRESS - A bead forming unit for a press is formed between a blank holder and an upper press portion and forms at least a dual circular bead for controlling a material flow along an edge portion of a material panel during a process for pressurizing the material panel placed between upper and lower press portions to form a product panel. The bead forming unit for a press includes: a bead projection formed to protrude out of the lower die face surface of the blank holder and having at least one dual circular bead groove integrally formed to form a waveform thereto; and a dual circular bead groove formed on the upper die face surface of the upper press portion and having at least one dual circular bead projection integrally formed to form a waveform complementary to the dual circular bead groove. | 10-30-2008 |
20090241628 | Draw Die and Method of Manufacturing Same - The embodiment relates generally to a stamping or draw die used for forming a workpiece into a part or component using a first die shoe, a second die shoe and a punch wherein the punch draws the material into a cavity located in the second die shoe. The force is generated during the forming operation are often unbalanced which generates an uneven stress distribution on the component of the die assembly. By varying the position and angle of the guide surfaces located on the punch, first die shoe and second die shoe the stress can be distributed across a greater area of the respective die assembly component to reduce stress concentrations in a localized area and correspondingly reduce the potential for die failure. | 10-01-2009 |
20100050729 | DIE ASSEMBLY FOR USE IN AN APPARATUS FOR FORMING A WORKPIECE - A die assembly for forming a workpiece includes a support clamp, a first clamp that is movable relative to the support clamp to engage a first portion of the workpiece, and a second clamp that is movable relative to the support clamp to engage a second portion of the workpiece. A forming punch is movable relative to the support clamp after the first clamp and the second clamp have been moved to form the workpiece. | 03-04-2010 |
20100126244 | Method for forming high tensile strength metal sheet - A method for forming a high tensile strength metal sheet (HTSMS), which is performed in a power press machine composed of a die, a punch and a blank holder, is disclosed. The HTSMS is placed between the die and punch with blank holder. A step portion appears at both an outer side of the punch and a pressing portion of the blank holder. The step portion is corresponding to a predetermined bent portion of the HTSMS. A step will be formed at an edge of the HTSMS by progressively pressing of the step portion to avoid recoil of the HTSMS after forming process. | 05-27-2010 |
20100170319 | METHOD FOR PRESS HARDENING OF METALS - The invention relates to a method for press hardening of a metal or an alloy wherein said metal is heated in a controlled furnace atmosphere which is essentially hydrogen-free and which comprises nitrogen and carbon monoxide. | 07-08-2010 |
20100269560 | PNEUMATIC BIASING OF A LINEAR ACTUATOR AND IMPLEMENTATIONS THEREOF - An improved method and apparatus are provided for constructing and operating a linear actuator, and equipment incorporating a linear actuator, by operatively connecting a pressure biasing pneumatic arrangement between the driving member and the driven member of a mechanical linear actuator for applying a unidirectional biasing force between the driving and driven members, along an axis of motion, regardless of the location or movement of the driving and driven elements with respect to one another along the axis of motion. The pneumatic biasing arrangement is also configured, connected and operated to reduce the force which must be exerted by the driving and driven members in extending and retracting the linear actuator. The pneumatic biasing arrangement may further be configured for preferentially aiding extension or retraction of the actuator. | 10-28-2010 |
20110100085 | PRESS-MOLDING MOLD, AND PRESS-MOLDING METHOD - Provided are a press-molding mold, in which cracks and wrinkles to be formed at the corner portions of a press-molded article are reduced regardless of the depth of the drawing, and a press-molding method using that mold. The press-molding mold ( | 05-05-2011 |
20120234071 | METHOD AND APPARATUS FOR BENDING A METAL MEMBER - A bending apparatus for bending a metal member includes at least one die, a punch disposed on an opposite side of the die through the metal member for pressurizing the metal member by relatively moving with respect to the die to perform bending, and a knock out die for supporting the metal member when the bending is performed. Friction generated on a surface of the knock out die for receiving the metal member becomes smaller continuously or gradually from a center portion toward side portions thereof in a bending ridge line direction. | 09-20-2012 |
20120279272 | STAMPING APPARATUS - The present disclosure provides stamping apparatus for stamping a blank. The stamping apparatus includes a first die and a blank-holding ram. The first die includes a forming cavity and a depression positioned outboard of the forming cavity. The depression is defined by a first corner proximate the forming cavity and a second corner distal the forming cavity in the outboard direction from the first corner and the forming cavity. The blank-holding ram includes a bead configured to engage a portion of the blank into the depression when the blank is positioned between the first die and the blank-holding ram. The bead includes a third corner proximate the forming cavity and a fourth corner surface distal the forming cavity in the outboard direction from the third corner. The first corner of the depression includes a radii of curvature greater than a radii of curvature of the second corner of the depression and the radii of curvature of the third and fourth corners of the bead. | 11-08-2012 |
20120297853 | PRESS-FORMING METHOD OF COMPONENT WITH L SHAPE - The present invention provides a forming method that forms a press component with an L shape from a blank metal sheet, the press component having a top sheet section and a vertical wall section which is connected to the top sheet section via a bent section having a part curved in an arc shape and which has a flange section on an opposite side to the bent section, the top sheet section being arranged on an outside of the arc of the vertical wall section, the method including: disposing the blank metal sheet between a die and both of a pad and a bending die; and forming the vertical wall section and the flange section while at least a part of the blank metal sheet is caused to slide on a part of the die corresponding to the top sheet section, the forming of the vertical wall section and the flange section being performed in a state where the pad is made close to or brought into contact with the blank metal sheet. | 11-29-2012 |
20130291613 | Forming Tools Having Textured Surfaces - A manufacturing method forms components having a desired shape. A contoured surface is defined for a forming tool for forming a metal blank into the desired shape, wherein respective portions of the metal blank flow over the contoured surface during forming. An intrinsic material flow pattern resulting from the contoured surface is compared to a desired flow in order to identify regions of the contoured surface having an insufficient flow that creates areas in the formed metal blank receiving less than a desired amount of metal. A surface microtexture is applied onto the contoured surface in a pattern selected to increase metal flow along the identified regions by providing a friction in the identified regions that is reduced relative to adjacent regions of the contoured surface. | 11-07-2013 |
20160158823 | DRAW PRESS DIE ASSEMBLY AND METHOD OF USING THE SAME - A draw press die assembly includes an upper die, a lower die positioned beneath the upper die, a blankholder for supporting an associated workpiece, and a blankholder drive mechanism connected with at least one of the upper die and the blankholder. The blankholder drive mechanism is configured to provide a pulsating movement of the blankholder with respect to the upper die. | 06-09-2016 |
20160199899 | FORMING TOOLS HAVING TEXTURED SURFACES | 07-14-2016 |
072351000 | With yieldable actuation of work-gripper (e.g., spring-biased blank-holder) | 8 |
20090025449 | CUSHION LOAD CONTROL DEVICE AND PRESS MACHINE HAVING CUSHION LOAD CONTROL DEVICE - A cushion load control device for a press machine includes a hydraulic cylinder | 01-29-2009 |
20090071218 | DIE CUSHION DEVICE FOR PRESS MACHINE - A die cushion apparatus of a press machine in which a discharge opening of a fluid hydraulic pump/motor is directly connected to a pressure chamber on a cushion pressure production side of a fluid hydraulic cylinder and the torque of a rotating shaft of the fluid hydraulic pump/motor is controlled by an electric motor to control a pressure (die cushion pressure) of the pressure chamber on the cushion pressure production side. It is therefore possible to control the die cushion pressure with excellent responsiveness with respect to a die cushion pressure command and prevent occurrence of a surge pressure. The die cushion apparatus also has excellent energy efficiency since energy required for a die cushioning action that a cushion pad receives when effecting die cushioning of a press machine is regenerated as electrical energy through the fluid hydraulic cylinder, fluid hydraulic pump/motor, and electric motor. | 03-19-2009 |
20090173131 | CONTROL DEVICE FOR SERVO DIE CUSHION - A control device, for a servo die cushion, by which the speed of a die cushion is prevented from largely deviating from the speed of a slide, whereby the press force between the slide and the die cushion is not significantly reduced. The control device includes a slide speed detector for detecting the speed of the slide, a die cushion speed detector for detecting the speed of the die cushion, and a die cushion speed commanding part for controlling the speed of the die cushion. When a tentative speed command of the die cushion is largely deviated from the detected slide speed, the command of the die cushion is corrected such that the absolute value thereof does not exceed the value calculated by adding the absolute value of the detected slide speed to a positive constant. | 07-09-2009 |
20110083487 | DIE CUSHION DEVICE FOR PRESS MACHINE - A die cushion device includes: a cushion pad which is located below a blank holder and is movable up and down while being synchronized with the blank holder; a linear driving device which drives a brake member along a predetermined line and regenerates energy from the linear movement of the brake member by combination of a servo motor and a conversion mechanism; and a hydraulic speed change device which transfers the speed of the cushion pad to the brake member via the pressure of hydraulic fluid while increasing the speed and transfers the speed of the brake member to the cushion pad via the pressure of the enclosed hydraulic fluid while decreasing the speed. | 04-14-2011 |
20110179847 | Tool for forming the bottom of cans - A known tool for forming a container bottom, in particular the bottom of a beverage can is provided with an ejector | 07-28-2011 |
20110265544 | Hydraulic cylinder for a hydraulic drawing cushion - The invention resides in a hydraulic cylinder ( | 11-03-2011 |
20110265545 | Downholder control in the manufacture of can bodies - The invention concerns an arrangement ( | 11-03-2011 |
20120067102 | Method and apparatus for forming a can shell - Can shells are produced with tooling installed on a mechanical press, and the tooling includes an upper retainer supporting a blank and draw die enclosing an outer pressure sleeve and an inner pressure sleeve surrounding a die center punch, all having pistons. An air chamber is connected by air spring passages to the inner pressure sleeve piston, and the outer pressure sleeve receives the same air as the air chamber or lower pressure air. The die center punch has an insert which initiates the drawing of a cup, and the inner pressure sleeve and die center punch have contoured surfaces which mate with opposing surfaces on a die core ring to form and clamp the chuckwall of the shell during downstroke of the press. A panel punch has peripheral surfaces which form the panel wall and countersink of the shell during upstroke of the press. | 03-22-2012 |