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| Number | Title | Issue Date |
| 8006532 | Workpiece supporting device for a multiple-die horizontal forging press A workpiece supporting device for a multiple-die horizontal forging press comprises a transfer pliers arranged at each recess of a die and having a movable stem operating as a workpiece ejecting means, the stem being coupled, at one end portion thereof, facing a dri... | 08/30/2011 |
| 7765847 | Modular power pack assembly Provided herein are pressure modules for use with die pressing operations for stripping work pieces from individual dies. The pressure modules include a top plate and a transfer plate that is separated by a resilient member that is compressed when a die set is close... | 08/03/2010 |
| 7393194 | Powdered metal process tooling and method of assembly A tool for use in a powder metal process is disclosed. The tool includes an upper tool and a lower tool. The upper and lower tools may include multiple members for each tool. The lower tool having a predetermined cross sectional profile that continuously expands out... | 07/01/2008 |
| 7364803 | High density dual helical gear and method for manufacture thereof The present invention relates to a low cost technique for manufacturing dual helical gears, such as herringbone gears, from powder metals. The dual helical gears made by this technique are of high density (greater than 92% of theoretical density) and offer superior ... | 04/29/2008 |
| 7363796 | Cold form nozzle for laser processing A method for cold-forming a nozzle for a laser includes placing a slug or tube of oxygen-free copper into a die. A mandrel is forced into the copper slug or tube. The resultant compressive force causes the copper to cold flow around the mandrel and the die to define... | 04/29/2008 |
| 7360389 | Manufacturing method of armature shaft, armature shaft and rotary electric machine In a forging process step, a small diameter portion 12 is formed in the leading end portion of a cylindrical shaft material 30, and an installation depressed portion 11d is formed on a base end face of the shaft material 30 for ins... | 04/22/2008 |
| 7353684 | Method and apparatus of manufacturing drum An apparatus and method of manufacturing a drum, for use in an appliance such as a dryer, that prevents noise and vibration during operation. The method involves forming a cylindrical drum; reducing a diameter at both ends of the drum; forming beads in a central par... | 04/08/2008 |
| 7347076 | Forging method and apparatus for forming helical gear Disclosed herein are a helical gear forging apparatus wherein a forming introduction portion thereof, used to form gear teeth of the helical gear, is variable in shape on the basis of the desired helix angle of the gear-teeth so as to constantly keep a predetermined... | 03/25/2008 |
| 7313942 | Forging machine for the upsetting of deformed reinforcement bars Forging machine for the cold forging of deformed steel bars includes upsetting and clamping dies housed in the same casing. The dies bear a continuous cavity so as to enable forging of long products. ... | 01/01/2008 |
| 7254979 | Device for ejection of moulded pieces from a moulding tool The invention relates to a so-called spring cushion (5), for the ejection of moulded pieces (4) from a moulding tool (3), with a plunger (6), moving in a guide tube (9) within the moulding tool and loaded in the ejection direction ... | 08/14/2007 |
| 7243520 | Stripping assembly A stripping assembly for removal of a can body from a punch in a can bodymaker in which an actuator lifts stripper fingers clear of the can carried on the punch in the forward stroke to avoid damage to the can or can coating. On the return stroke, the actuator pisto... | 07/17/2007 |
| 7240529 | Partially reinforcing method and apparatus of metal material The present invention intends to provide the partially reinforcing method and apparatus for reinforcing the required part of the metal material having good forming property and relatively low strength (hardness and yield stress) by the press processing. The p... | 07/10/2007 |
| 7231799 | Method and device for the production of a workpiece with internal toothing, in particular a hollow wheel The invention relates to a method and an apparatus for producing a workpiece with internal toothing, especially an internal geared wheel, by using a cup shaped preform (N) with a substantially cylindrical side wall (N1) and a mandrel (5) with an extern... | 06/19/2007 |
| 7131181 | Tool for manufacturing ballpoint pens A tool and method of manufacturing a tool for making ballpoint pen tips, called rough tips, in their seat zone and preferably in their cone zone. The tool is mounted in fast-rotating precision spindles and the position of the tool may be adjusted to adjust the dimen... | 11/07/2006 |
| 7131311 | Method of and apparatus for forming forging blank When an actuator is operated, an upper die is displaced downwardly, pressing a lower surface of a workpiece against a forming surface. After the upper die is displaced upwardly, an ejecting member is displaced upwardly to push the workpiece upwardly by a lower die. ... | 11/07/2006 |
| 7121128 | Method of manufacturing elliptic deep-drawn products A method of manufacturing an elliptic deep-drawn product including a first step of providing an intermediate product and a second step of providing an end product. In the first step, a rotary forming die is used to form in a blank a substantially round formed portio... | 10/17/2006 |
| 7117708 | Die set for press forming metal sheet and press forming method of metal sheet A die set for press forming a metal sheet is provided, which comprises: at least a punch; and a die, wherein a punch-die clearance CL2 corresponding to a site to be formed immediately after the initial stage of press forming and a punch-die clearance CL1 | 10/10/2006 |
| 7021111 | Forging machine with a guiding roller mechanism for guiding movement of a sliding plate unit A forging machine includes a machine bed, a driving unit driven by a driving source to activate a feeding unit, a sliding seat unit, and a forging unit. The machine bed includes left and right sidewalls. The driving unit is disposed at an inner side of the left side... | 04/04/2006 |
| 7021099 | Extraction system for hot formed parts The distortion-free removal of a heat softened sheet metal part from a heated forming surface is enabled by the elevation of lift pads in the forming surface. Strategically located and sized pads are recessed in the forming surface of the hot forming tool and the pa... | 04/04/2006 |
| 7004007 | Die cushion apparatus for hot stretch-forming A self-contained die cushion assembly for use in a stretch-forming process involving heated tooling. A lower plate is mounted below an upper plate that undergoes different thermal expansion than the lower plate. Guidance devices are mounted between the upper and low... | 02/28/2006 |
| 7000445 | System for forming an elongated container A system for forming a cup used in forming an elongated container including a draw-redraw station including a movable platen carrying a punch shell; a punch core riser, a punch core mounted on the punch core riser; and a first, fluidly actuated pressure sleeve; and ... | 02/21/2006 |
| 7000444 | Forging method and apparatus A method of producing a bevel gear, particularly a bevel ring gear, the bevel gear comprising mounting surfaces. The method comprising the steps of flashless warm forging a blank, preferably an annular blank, in a forging die to produce the bevel gear with precision... | 02/21/2006 |
| 6928849 | Method of manufacturing heat exchanging fin and die set for manufacturing the same The method of manufacturing a heat exchanging fin having an oval collared through-hole is capable of reducing manufacturing cost. The method comprises the steps of: forming a circular projected section, whose transverse sectional shape is a circular shape, in a thin... | 08/16/2005 |
| 6837087 | Guide pin slot arrangement for super plastic forming blanks providing improved blank guidance and formed part release A blank positioning and guide construction which includes guide pin slotting that effects the accurate positioning of the sheet on the forming die and guide pin thereof and which provides for the enlargement of the guide pin slot by the predetermined deformation of ... | 01/04/2005 |
| 6684678 | Method for extracting a tool from a hollow object and tool for machining a hollow object The invention relates to a method for extracting a die (4) from a hollow object (11) having several grooves (16, 17) arranged opposite one another on the surface of the inner sheath whereby the longitudinal axes thereof extend crosswise relative to the co... | 02/03/2004 |
| 6484549 | Die block assembly A die block assembly includes a sliding block (50) and a die plate (70). The sliding block has a base (53) from which a pair of slanted rails (58) extends. A protrusion (61) with a vertical outer wall (62) extends from an end of the base, between the rail... | 11/26/2002 |
| 6477883 | Die block apparatus for shaping workpieces A die block apparatus for shaping workpieces by way of die stamping includes a die block (40), a first sliding block (10), a second sliding block (30), and a stopper block (50). The die block is dimensioned to receive the first and second sliding blocks a... | 11/12/2002 |
| 6470728 | Cold forging method and apparatus A stock inserted into a die is sandwiched between a punch and a knock-out, a predetermined pressing force is applied to the knock-out, and a pressing force larger than the sum of the pressing force of the knock-out and a pressing force for forming is appl... | 10/29/2002 |
| 6438844 | Method and apparatus for manufacturing constant velocity joints A method and tool are provided for manufacturing an outer race for constant velocity joints by plastic deformation of a preform having a cavity open on one side to produce axial ball tracks and cage guide surfaces. the preform is inserted within an outer ... | 08/27/2002 |
| 6250128 | Forging die and upset forging method An upset forging die device and method are provided for upset-forging a raw material that is being filled in a cavity of a lower molding die at a portion between an upper punch of an upper molding die provided on a slide and a lower punch of the lower mol... | 06/26/2001 |
| 6189362 | Forging die apparatus A forging die apparatus comprises a punch for applying a pressurizing force to a forging material arranged in a cavity, a cylindrical member installed to surround a part of outer circumference of the punch, for making displacement integrally with the punc... | 02/20/2001 |
| 6134938 | Forming tools Forming tools includes an upper holder; a lower holder; a punch having a punch body which can be attached to/detached from the upper holder and the lower holder; an ejector being disposed movably in a vertical direction around a convex portion provided on... | 10/24/2000 |
| 6089986 | Die for forming self-tapping fastener blank A header die for forming a self-tapping fastener blank provides die forming zones within which the blank is formed, the blank therby defining an odd number of lobes along a cross section taken perpendicular to its axis of rotation. The lobes define a rela... | 07/18/2000 |
| 6071196 | Adjustment device for use in the forging of small metal items An adjustment device for use in the forging of small metal items, especially applicable to forging machines for the production of screws, rivets and the like, suitable to realise the rapid adjustment of the length of the shank of said small items, having ... | 06/06/2000 |
| 6041640 | Spiral and hypoid tooth member and method and device for forming the same A method and apparatus for ejecting a member from a die. The method includes the steps of rotating the member about its axis and axially displacing the member relative to the die. The ejector device includes an ejector having an axis and twisting means fo... | 03/28/2000 |
| 5970775 | Method and apparatus for forming cup-shaped container bodies Apparatus and method for forming cup-shaped container bodies in a press by blanking a disk shaped metal blank from a flat metal sheet by a cutting die and forcing the disk blank through a blank and draw die by movement of a draw horn to form a generally c... | 10/26/1999 |
| 5953950 | Method and apparatus for manufacturing disk products having helical ridges A method and an apparatus for producing a disc product having a plane carng a relief and helical ridges on the outer peripheral side. The inventive production method and the apparatus therefor have enabled a continuous processing of a material mass to fo... | 09/21/1999 |
| 5946963 | Bevel gear hot-forging apparatus At the time of closing a die mold, an upper die (18) is rotated with respect to screws (44a-44d) while being brought into contact with a lower die (14) by means of drive gears (42a-42d) and a driven gear (40), wherein a closing force is applied to the mat... | 09/07/1999 |
| 5857375 | Can end stripper and part ejector Can ends are ejected from a tool station by a lifter ring and air currents in an ejector chute provided by a curved nozzle assembly adjacent an opening in the lower edge of the chute. It entrains can ends in air current across the die station and over a k... | 01/12/1999 |
| 5850756 | Workpiece ejecting mechanism for a forging apparatus A workpiece ejecting mechanism for a forging apparatus includes a rod passage formed in a machine bed, and a workpiece pushing rod and a driving rod which are received slidably in the rod passage. An air passage is formed in the machine bed and is communi... | 12/22/1998 |
