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JP2004106035 |
To provide electrodes which can heat a sheet metal uniformly with no deformation.A plurality of freely movable electrodes with clamping mechanism are arranged to absorb thermal expansion in both length and width directions caused during ...
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JP2004106034 |
To provide an apparatus and method for processing a sheet metal which can apply a hot processing on the sheet metal attaining a high quality without oxidation.The processing apparatus with an electric heating device is installed in a cha...
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JP2004098125 |
To provide a press forming method and a press forming apparatus which enable the temperature of a work to be raised in a short period of time regardless of a variation in the sheet thickness of a work and a coating application state of a...
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JP3538521 |
To prevent a punch from breaking by releasing biting of the punch with a simple mechanism against the phenomenon of biting of the punch inside a die in a press machining. A punch 12 is held inside a punch holder 13 movable only verticall...
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JP3531405 |
To bend and draw a work with one stroke of die ascending and descending operation by suitably positioning the work in a press. In the press bending and drawing the work W with the cooperation of an upper die and a lower die punch 11, the...
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JP3531441 |
To realize working with a plurality of forms such as drawing, punching and bending by one set of the press die in the press die having so- called triple action structure with a cushion drawing mechanism added to a press die with a double...
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JP2004074280 |
To enable a means for retaining the position of a plurality of die blades by energizing the die blades toward an anvil while enabling the die blades to move outward in the radial direction of the blades to be formed at a low cost and to ...
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JP2004074287 |
To provide a method of manufacturing a mirror surface of a parabolic antenna, which prevents a connecting portion from being cracked during processing, achieves very high precision of the mirror surface and a low defective fraction of th...
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JP2004066307 |
To provide a die cushion device capable of easily adjusting the timing for changing a die cushion ability.A spool 30 is disposed in a cylinder 10 of the die cushion device 1. Since this spool 30 can be rotated by an adjusting means 2 fro...
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JP2004066337 |
To provide a press-molding device excellent in productivity in which pressed products of high quality can be obtained, and a stable press-molding can be obtained.A recessed part 15 is formed at the corner part of a holder part 11 for mol...
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JP2004058111 |
To provide a deep drawing method of a magnesium alloy plate, and a product by the method.In a method for manufacturing a deep-drawn body of a magnesium alloy plate, superplastic deformation is performed by deep-drawing the magnesium allo...
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JP2004058082 |
To provide a method for producing a tailored blank press formed article which is excellent in formability and controllability of work hardening caused by press working, thus hardly causes defect in the forming, facilitates quality contro...
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JP2004055254 |
To provide a constant current heating method of a metal plate, accurately heating the metal plate to a target temperature within a target period of time.The resistivity ρ and the specific heat C of the metal plate are approximated as fu...
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JP2004050230 |
To provide a forming method which forms irregularities by press forming only a fragile area in a precision press forming of a metal sheet.A metal sheet 1 such as a steel sheet or a stainless steel sheet is blanked and in a part of which ...
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JP2004042122 |
To provide a method having short production tact at a low cost and few initial investment capable of necking and deep drawing without cracking by one press, and to provide the molding apparatus.The molding apparatus is composed of a lowe...
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JP3518004 |
PURPOSE: To provide such a method for cutting the end face of an annular work as is capable of enhancing the flatness of the end face with a roll over suppressed, by making an end face forming die which has little influence due to variat...
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JP2004034145 |
To provide a press die capable of manufacturing pressed components need to undergo a plurality of working steps before obtaining necessary product shapes at a low cost with high accuracy.A cope 2 is provided with a moving section 7. A dr...
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JP2004034053 |
To prevent wrinkles from being generated on a thin plate along a joint line between a thick and thin plates in a tailored blank, even if a door panel is press-formed from the tailored blank.The door panel is press-formed from the tailore...
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JP2004025279 |
To provide a deep drawing apparatus for forming a cylindrical container from a thin metallic sheet, which apparatus performs drawing of a square cylindrical container of a deep bottom by a set of dies and punches.A blank holder 14 for ho...
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JP2004025273 |
To provide an apparatus and a method for manufacturing press-formed articles using, for example, a high-strength metal plate as a blank to be formed and also having excellent dimensional accuracy.By using a manufacturing apparatus 12 on ...
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JP2004025247 |
To provide a method of producing highly strengthened component by which high strength press formed parts can be produced with high precision and at low cost.In the method of producing highly strengthened component, a steel sheet consisti...
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JP2004017156 |
To provide a die, which can smoothly carry out drawing and can partially carry out coining for an undulated aluminum material by means of a single die.A balancer pin 11 interlocking with a cushioning pin 10, which is pushed by air pressu...
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JP2004009080 |
To provide a method for manufacturing machine parts and electronic components capable of imparting thickness differences according to the products range, enjoying good dimensional accuracy and improved productivity.A plate presser foot 4...
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JP2004009066 |
To provide a press for precisely deep-drawing with which a long product etc., can efficiently be deep-drawn with high precision while preventing a flexure at the center part of a slide.This press for deep-drawing, is provided with a mult...
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JP2004009107 |
To increase depression effect in the inflow of a blank and to reduce bead forming force.A press forming die is provided with a punch for forming a product part, a blank holder 2 for holding the blank and a die. Beads 5 for depressing the...
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JP3504513 |
To execute forming with a simple structure by giving a part of pressing force of a elastic punch to a holder for holding and pressing a work to a female die at the time of executing forming of the work along a recessed part of the female...
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JP3496457 |
To reduce the expenditure of a die and to simplify the maintenance of the die, etc., by making one set of press die possible to execute plural kinds of working such as drawing, punching and bending. An upper die 3 supported movably in th...
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JP2003334632 |
To provide a processing method wherein quality and productivity are enhanced by enabling processing of a strip material in a plurality of rows in processing small parts such as light condensing parts.By using a press mold for surface-pre...
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JP3489167 |
PURPOSE: To provide the shear spun can which is free from pin holes, thinly tin-labored and excellent in corrosion resistance and anti-flavoring property and its manufacturing method. CONSTITUTION: Reference is made to a shear spun can w...
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JP3489378 |
To precisely raise the positioning standard of a work with a simple structure and to machine it in a press device. In the press device to draw work with the co-operation of pair of an upper die 12 and a lower punch 11 which move vertical...
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JP3489318 |
PURPOSE: To prevent generation of phenomenon of die contact due to defective parallelism between a die and punch. CONSTITUTION: The part of a die face 1a of die 1 along the part excepting a final product shaped part Pa of a blank B is sp...
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JP2003311341 |
To provide a method and device which prevent cracks and wrinkles from being caused in press processing of a sheet.In the press processing method, the blank inlet velocity is measured in the press processing to control the blank holding p...
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JP2003311340 |
To provide a press processing method and device that prevent cracks and wrinkles from being caused during processing of a sheet.In the press processing method, a tension imparted to a blank 4 during the press processing is measured to co...
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JP2003311338 |
To provide a method for determining an apparent coefficient of friction for improving the calculation accuracy of a drawing force required to allow a work to pass a bead part of a plate holding part of a forming die, and a forming simula...
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JP2003311339 |
To provide a press molded article twisting deformation which is caused in press molding using a metallic sheet as a base material is suppressed or eliminated, and to provide a method and device for manufacturing the press molded article....
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JP3482522 |
To provide a high-temperature bulge forming method and an apparatus therefor excellent in productivity of bulge forming components and capable of improving accuracy and durability of a mold. A forming stock 9 is charged into a mold 6 pro...
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JP2003285123 |
To enhance production efficiency and reduce manufacturing costs by restraining the incidence of shrink marks and eliminating the necessity of cladding work and finishing work.A projected part 18 (T1
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JP2003275827 |
To obtain a press formed article free of deformation by removing deformation generated on the press formed article while a necessary face shape is secured.A shelf-shaped part 5 that leads to the vertical wall face 4 of a semifinished pre...
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JP3475551 |
PURPOSE: To integrally form shafts the length, accuracy of the outside diameter, perpendicularity, etc., of which are enough ensured from a metallic plate in the arbitrary position of the metallic plate by executing backward extrusion of...
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JP2003260527 |
To provide a pressing mold which has a movable cam base and can realize improved scrap treatment.This pressing mold includes: an upper mold 1 provided with a pressing cam 2 for cutting a work edge; a lower mold 3 provided with a cam base...
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JP3471048 |
PURPOSE: To constitute a automotive vehicle full face wheel structure of modified type, thereby drastically reducing the manufacturing cost starting from sheet metal by specifying the distance in the axial direction of the wheel between ...
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JP3471402 |
PURPOSE: To provide a forming method for an aluminum and aluminum alloy sheet which can improve the moldability more. CONSTITUTION: In an extra-low temperature forming of an aluminum and aluminum alloy sheet, the average velocity of a pr...
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JP3470168 |
To reduce a slanting face part swelling at a punch stretch molding. This method refers to a molding device for molding a punch stretched part of a metal plate successively wherein an upper punch 4 and a bottom punch 5 are opposingly arra...
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JP2003245732 |
To provide a method and machine for drawing which enables drawing by a small number of steps smaller than that in a prior art technique by drawing with a good balance of a wall thickness.In this drawing machine, upon the entry of two pun...
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JP2003236628 |
To adjust the clamping force of a blank holder so that the inflow of a plate is optimized according to the forming shape during the sequential forming operation.A plate 1 is placed on a supporting base 2, and the periphery of the plate i...
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JP2003236627 |
To reduce a forming cost by dispensing with a die-shaped pressing member which is disposed in the opposite side of a bar-shaped pressing member and is required for a conventional sequential forming.A liquid 3 is filled in a liquid tank 1...
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JP2003236626 |
To reduce the occurrence of residual stress in sequential forming.A rod-shaped pressing member 20 is sent down from an upper part, pressed against a plate material, and the sequential forming is carried out by plastically deforming the p...
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JP2003231915 |
To provide a press hardening method for producing a press formed part having high strength and accuracy at a low cost.In this press hardening method for conducting hardening and press forming, a low-carbon steel sheet is heated, then is ...
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JP2003230913 |
To briefly remove the strain of a press-formed article only in a tensioning operation in a state (press-forming condition) that the shape of the press-formed article is maintained.By shifting the center W1 of the press-formed article W i...
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JP3459004 |
To improve retentiveness of configuration after the press forming by reducing a residual stress differential between a bending external side and a bending internal side of a raw material. A press forming method which enables a bending ra...
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