| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Method of manufacturing torsion bar for vehicle steering device and torsion bar | US10501654 | 2003-03-13 | US07159434B2 | 2007-01-09 | Motonobu Yoshimura; Masafumi Okumoto |
| A method of manufacturing a torsion bar includes a first shaping step of reducing a diameter of a round bar steel material according to cold drawing work so as to have a hardness including an inside through a surface layer of 320 or more to 450 or less by Vickers hardness (HV), and a second shaping step of cutting a midway area of the steel material in the longitudinal direction so as to obtain a spring portion. | ||||||
| 42 | Method for manufacturing an open hollow bicycle crank | US11132232 | 2005-05-19 | US20060260117A1 | 2006-11-23 | Chuan-Feng Chen |
| A method for manufacturing an open hollow bicycle crank, whose steps comprises: (1) a step for primary molding of the crank: to place the raw materials for the hollow crank in a die and forge them with a metal forming machine for primary molding, and make them form a front end and back end, further the back end would be made open while the front end be a perforation to combine with the bicycle petals; and (2) a step to make the interior of the crank be hollow: in the preparation of making the back end of the crank be open, to make it hollow by means of drilling or other ways along with the axis of the interior of the crank from the center of the front end; and (3) a step to forge the back end of the crank: after making the interior of the crank hollow, to forge the back end of the open crank to make the back end of the crank open for the combination the spindle in the five-way pipe of the bicycle frame. After finishing the foregoing manufacture steps, the light open hollow bicycle crank can be obtained easily. | ||||||
| 43 | Selectively cold worked hydraulic motor/pump shoe | US10910320 | 2004-08-04 | US07025182B2 | 2006-04-11 | Richard G. Rateick, Jr.; Larry A. Portolese |
| A method of manufacturing a wear resistant shoe (26) includes upsetting (46) one end portion (38) of cylindrical member to work harden that portion to a substantial depth, machining (48) the cylindrical member portion to finished dimensions and surface hardening (56) a face (28 or 34) of the machined cylindrical member portion. The cylindrical member may comprise rod stock of a diameter less than the greatest diameter of the finished shoe and be upset or swaged to axially reduce and radially increase the dimensions of the one end portion. A hollow region (30) is formed in an opposite rod stock end portion and the periphery (50) of the hollow region is crimped about a rounded end (18) of the piston (20). The cold work done during the swaging or forming process provides a foundation for hardened faces comprising balance (28) and auxiliary balance (34) lands, forms a crude shape of the shoe, and imparts work hardening and wear property improvements. The harder metal surface provides a foundation for subsequent surface hardening such as coating with TiN. The crimping process used to join the shoe to the piston imparts cold work to the skirt region of the shoe and enhances the wear resistance of the shoe. The cold heading step (46) may be omitted if a hardened rod stock is used, but the skirt should be annealed (66) prior to crimping to the piston. | ||||||
| 44 | Systems and methods for providing an aluminum bar for towing | US11159436 | 2005-06-20 | US20060017260A1 | 2006-01-26 | John Andersen |
| Systems and methods for using an extrusion, forging, casting and/or machining process to provide an aluminum hitch component with increased strength that eliminates encumbrances, such as rusting and fusing, associated with traditional hitch components. Accordingly, an extruded hitch is provided that includes increased tensile strength, does not rust, is lighter, and is more appealing to consumers. | ||||||
| 45 | Method of working end part of metallic tube body and metallic tube body, and method of manufacturing vibrationproof bush using the working method and vibrationproof bush | US10363572 | 2001-04-19 | US06918277B2 | 2005-07-19 | Hiroaki Takahashi; Tadayuki Suzuki |
| This invention has an object of diminishing an inside diameter while securing the area of the terminal edge larger, at the extremity of a cylindrical body made of a metal used for a vibration isolating bushing and the like. Accordingly, the present invention provides a manufacturing method of vibration isolating bushing 10 serving to stick the rubber elastomer 16 to the outer circumference of an inner cylinder 12 made of a metal by means of vulcanization forming, by diminishing in diameter the extremity 18 by cold plastic working while turning a diameter diminishing jig 40 and pressing against the circumferential surface of the axial extremity 18 of the inner cylinder 12, and further by enlarging and forming the terminal edge 19 by cold plastic working while turning an upsetting jig 50 and pressing against the terminal edge 19 at the extremity 18 being diminished in diameter. | ||||||
| 46 | Method of manufacturing torsion bar for vehicle steering device and torsion bar | US10501654 | 2003-03-13 | US20050115051A1 | 2005-06-02 | Motonobu Yoshimura; Masafumi Okumoto |
| A method of manufacturing a torsion bar includes a first shaping step of reducing a diameter of a round bar steel material according to cold drawing work so as to have a hardness including an inside through a surface layer of 320 or more to 450 or less by Vickers hardness (HV), and a second shaping step of cutting a midway area of the steel material in the longitudinal direction so as to obtain a spring portion. | ||||||
| 47 | Closed forging metod, forging production system using the method, forging die used in the method and system, and preform or yoke produced by the method and system | US10473299 | 2003-09-29 | US20040093926A1 | 2004-05-20 | Masayuki Natsui; Takafumi Nakahara |
| A closed forging method for producing a forged product includes preparing as a forging material a cylindrical cast ingot that has a volume the same as the volume of a forged product and assumes a shape having an upper surface, a lower surface and a side surface and containing no angular portion; and applying pressure to the side surface of the forging material. The shape has a ratio of the lateral length of a projection profile of the forging material as viewed in the direction perpendicular to the direction of pressure application to a length of the forging material as measured in the direction of pressure application is 1 or less. The forged product obtained is a preform of an upper arm or a lower arm with a plurality of branches that is a suspension part for a vehicle or a yoke with a plurality of branches that is a joint part employed in a vehicle suspension. The preform or yoke has metal flow lines along each branch and exhibits enhanced mechanical strength. | ||||||
| 48 | Method for producing a housing for a ball joint | US10204967 | 2002-08-26 | US06735997B2 | 2004-05-18 | Klaus Rosenberger; Markus Thölking; Detlef Schellack |
| A process is provided for manufacturing a ball-and-socket joint housing by cold forming from a blank (R), which is preferably produced from a bar or wire material and is prepared for forming. A first axial depression (1) with a diameter (D1) is first prepared by reverse cup extrusion. A second axial depression (2) with a comparatively larger diameter (D2) is subsequently prepared in the axial depression (1) by reverse cup extrusion. A diameter reduction (D3) also of the first axial depression (1) is formed in some sections by the deformation of the material during the second reverse cup extrusion. | ||||||
| 49 | Method for producing a housing for a ball joint | US10204967 | 2002-08-26 | US20030074947A1 | 2003-04-24 | Klaus Rosenberger; Markus Tholking; Detlef Schellack |
| A process is provided for manufacturing a ball-and-socket joint housing by cold forming from a blank (R), which is preferably produced from a bar or wire material and is prepared for forming. A first axial depression (1) with a diameter (D1) is first prepared by reverse cup extrusion. A second axial depression (2) with a comparatively larger diameter (D2) is subsequently prepared in the axial depression (1) by reverse cup extrusion. A diameter reduction (D3) also of the first axial depression (1) is formed in some sections by the deformation of the material during the second reverse cup extrusion. | ||||||
| 50 | Method of making an axle element for a motor vehicle, and shaping die for carrying out the method | US10126475 | 2002-04-19 | US20020157444A1 | 2002-10-31 | Michael Heussen; Bernard Comte; Vincent Von Niederhausern; Andreas Baak |
| In a method of making an axle element for a motor vehicle, a rod-shaped semi-finished product of aluminum is use used as starting material and heated to a desired shaping temperature. A first end of the semi-finished product is upset in a cavity of a shaping die by means of a first punch. Subsequently, the other end of the semi-finished product is compressed in the cavity by a second punch, whereby compressed material is forced into a branch of the cavity to form a pre-forge part with a leg portion. The pre-forge part is then forged into a finished axle element, e.g. a swivel bearing. | ||||||
| 51 | Push rod having irregularly shaped internal bore | US679743 | 1991-04-03 | US5069173A | 1991-12-03 | Angelos Mallas |
| A push rod and method of making same is provided which includes the step of cold extruding an irregularly shaped internal bore into the inner wall of an elongated hollow tube, thereby increasing the internal surface area and internal volume over conventional straight-walled tubes. In the preferred embodiment, the internal bore is defined by a cross-section of an equal number of alternately connected convex and concave portions which result in a varying wall thickness about the perimeter of the push rod. The thick wall regions are designed to be located diametrically opposite the thin wall regions. | ||||||
| 52 | Process for upset forging of long stands of metal bar stock | US133340 | 1987-12-15 | US4838062A | 1989-06-13 | Otto E. Prenn |
| Process and apparatus for upset forging a long stand of solid malleable metal bar stock in a single pass is capable of gathering a large volume of the bar stock into a complex shaped element. The end of the bar stock is selectively heated to provide an intermediate section thereof to a desired upper forging temperature and an end section thereof at a desired lower forging temperature. The heated bar stock is positioned in an upset forging die cavity. A forging punch enters the cavity to upset the long stand to fill the cavity firstly with the upset intermediate section and then the remainder of the cavity with the end section which is at a lower forging temperature. A friction reducing material is provided in the cavity to provide for sliding of the end section along the cavity while the end seciton upsets and gathers the intermediate section of the bar in the major portion of the upset cavity section. | ||||||
| 53 | Method of manufacturing bicycle chain drives | US672981 | 1984-11-19 | US4602524A | 1986-07-29 | Cyrus M. Whitten; Edward M. Hilger |
| A process for manufacturing a bicycle chain drive which utilizes a crank which is cold formed as a single piece with integral splines for engaging a sprocket wheel when the sprocket wheel is mounted in driving relationship with the crank. A cold forming process which can be used for producing the crank includes several stages of upsetting to form the journals, the splined sprocket flange, and an adjoining collar for aligning the sprocket. After those elements have been formed the pedal receiving ends are formed by another upsetting process after which they are drilled and tapped. Then the arms are bent to form the finished crank which is assembled to the sprocket. | ||||||
| 54 | Method of producing an expansion sleeve for a metallic expansion dowel assembly | US689666 | 1985-01-08 | US4601192A | 1986-07-22 | Gusztav Lang; Erich Leibhard; Peter Froehlich |
| An axially elongated expansion sleeve is formed from an extruded cylindrically shaped blank with a blind hole in one end. An axially extending part of the blank from the other end is deformed into a U-shaped section of uniform thickness. The U-shaped section is upset so that it increases in thickness toward the other end. The upset U-shaped section is shaped to provide it with a cylindrically shaped outside surface with the inside base of the section sloping toward the axis of the sleeve in the direction toward the other end. | ||||||
| 55 | Swash plate type compressor shoe and manufacturing method therefor | US328547 | 1981-11-27 | US4512175A | 1985-04-23 | Yoshihiro Kaku; Keiichiro Otsu |
| There are disclosed a shoe which is interposed between a swash plate and a piston of a swash plate type compressor and which converts rotary movement of the swash plate into reciprocal movement of the piston, and a method for manufacturing the same. According to the method of the invention, a columnar element is compressed in the axial direction for plastic deformation in such a manner that one end of the columnar element is deformed along the inner surface of a hemispherical recess of a die while the other end is urged against the flat end surface of another die. A shoe can be easily manufactured with this method, which has a flank between the hemispherical part which is in slidable contact with the surface of the piston defining the hemispherical recess and the bottom end face of the swash plate which is in slidable contact with the swash plate. According to this method, a hole of a predetermined size may alternatively be formed at the end face of a columnar part of the element, and the end face of the columnar part is cut into a conical shape while reducing the diameter of the hole toward the opening side thereof. Still alternatively, the periphery of the end face of the columnar part may be cut into a conical shape and then pressed to form a hemispherical part. A great flow of the material and local exertion of a high load on the element are prevented. | ||||||
| 56 | Rod ends and blanks and method and apparatus for making same | US224876 | 1981-01-14 | US4450703A | 1984-05-29 | John A. McCloskey |
| A cold header or a screw machine preforms a rod end blank from rod stock. A female blank has a drilled and tapped rod portion and an undersized spherical head portion. A male blank has an unthreaded straight shank and an undersized spherical head portion. The rod portion is necked adjacent the head portion. The blank is placed on an indexing table which advances the blank through a series of processing stations. The head portion is heated for three seconds with an induction coil, rested for one second, and heated again for three seconds with an induction coil. The head portion is then flattened, shaped and enlarged in a closed die press. The head portion is quenched to room temperature. The head portion is punched in a die punch to remove the slug and flash. | ||||||
| 57 | Device for manufacturing, by extrusion, a piece having a recessed portion in its peripheral surface | US227360 | 1981-01-22 | US4417461A | 1983-11-29 | Jean Buffon; Edouard Trome |
| A device for manufacturing, by extrusion, a piece having a recessed portion in its lateral surface, and, on one side, a head and, on the opposite side, a tail, which device comprises a fixed die holder containing a die, a punch borne by a mobile support and structure for axially displacing the punch to engage it in the die and to disengage it therefrom together with means for ejecting the extruded piece. The device further comprises, in front of the fixed die holder, a coaxial mobile die holder composed of two parts, forming clamp. A spring and cooperating cams are provided for opening and closing the mobile die holder-forming clamp and an actuator is provided for displacing the mobile die holder in translation parallel to the axis of the punch and of the die. After the actual extrusion operation, the mobile die holder-forming clamp draws on the head of the extruded piece so as partially or totally to disengage its tail from the die, then the mobile die holder is opened so as to release the piece and allow ejection thereof. | ||||||
| 58 | Method of producing yoke of rotary electric machine | US206180 | 1980-11-12 | US4389871A | 1983-06-28 | Hidetsugu Takeuchi; Tsuyoshi Muramatsu; Shozo Kato |
| A method of producing a yoke of a rotary electric machine wherein a cylindrical blank is formed comprises extrusion forming a semi-finished article having abutting surfaces at axial opposite ends in the first step. The abutting surfaces are subjected to coining in the second step whereby the two abutting surfaces can have a spacing interval of high accuracy and can be disposed parallel to each other. | ||||||
| 59 | Method and machine for forming a lump on the end of a pipe | US58950 | 1979-07-19 | US4263799A | 1981-04-28 | Torazi Motizuki |
| First a metallic pipe is tapered, so that it is substantially closed at its end, and so that its cross-section is reduced. Then it is pressed hard against a mold electrode, and a large electric current is passed through it to the mold electrode, so that the end softens, but does not melt, and by the pressing (which may be of the order of 2.5 tons weight) the end is formed into a lump, with no trace remaining of the hole through the pipe within the lump. In certain embodiments, the mold electrode may be formed with a notch, and/or a depression, and may be inclined at an oblique angle to the axis of the pipe, and may be moved sideways or at an oblique angle to the axis of the pipe as the current is passed and the lump formed. | ||||||
| 60 | Method of actuator rod manufacture | US18902 | 1979-03-09 | US4263707A | 1981-04-28 | Arnold Cooke |
| A method of producing pneumatic brake actuator rods in which a spigot is provided at one end for mounting a pressure plate and a thread is provided on the output end, the body of the rod around the root of the spigot being under cut and thereafter upset by roll-swaging or other means to produce a flange for supporting the rod against the pressure plate so that the rod can be of generally substantially reduced diameter in relation to that used for many years hitherto. | ||||||
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