[특허]Method for pinch free tube forming

Method for pinch free tube forming 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B21D-026/02
출원번호	US-0048016 (1993-04-19)
발명자 / 주소	Shah Sanjay M. (Rochester Hills MI) Lovell Michael H. (Leonard MI)
출원인 / 주소	General Motors Corporation (Detroit MI 02)
인용정보	피인용 횟수 : 52 인용 특허 : 0

초록 ▼

A method of forming an elongated box shape tubular frame member from a round tube includes the steps of: providing a lower die member having a cavity submerged substantially below the top surface of the lower die and having a cavity width equal to the width of the desired box shape frame member and less than the diameter of the tube. The lower die has an entry opening which opens to the top surface of the die and is defined by angularly disposed funnel walls which converge to intersect with the cavity. The round tubular blank is placed onto the lower die so that the blank rests on the angularly disposed funnel walls above the cavity. The upper die is lowered onto the lower die and has a lid wall which forces the tubular blank downwardly into the cavity while the angularly disposed funnel walls guide the blank to collapse in a manner preventing pinching of the blank between the upper and lower dies. The application of internal hydraulic pressure then expands the collapsed tube outwardly to the shape defined by the cavity of the lower die and the lid wall of the upper die.

대표청구항 ▼

A method of forming an elongated quadrilateral box shape tubular frame member from a round tube, having a diameter greater than the width or the desired frame member comprising the steps of: providing upper and lower dies having open positions to permit the placement of the round tube therebetween and closed positions defining therebetween the approximate quadrilateral cross sectional shape of the desired frame member, said lower die having a die cavity with an overall depth greater than the desired height of the frame member, and including a lowermost forming cavity portion of width equal to the width of the desired frame member and depth equal to the depth of the desired frame member, and an uppermost entry cavity portion having walls spaced at a width greater than the width of the desired frame member and converging angularly to the width of the lowermost forming cavity portion so that the walls defining the uppermost cavity portion are engageable by the round tube during the lowering of the upper die onto the lower die and supportably guide the collapse of the round tube as the round tube is forced into the lowermost cavity, and applying internal pressure to the tube with the dies in the closed position to cause the expansion of the tube to the cross sectional shape defined between the dies.

이 특허를 인용한 특허 (52)

Brown, James H., Apparatus and method for creating a seal on an inner wall of a tube for hydroforming.
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Roper Ralph E., Apparatus and method for forming a tubular frame member.
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Brown James H. ; Webb Gary A., Apparatus and method for hydroforming.
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Horton Frank A., Cradle assembly.
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Horton Frank A. ; Butynski Gary A. ; Devor Michael J. ; Gille Matthias, Cradle assembly.
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Durand Robert D. ; Marando Richard A. ; Hetrick ; III George M. ; Lapic Stephen M., Engine cradle for vehicle body and frame assembly and method of manufacturing same.
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Freeman Richard B. ; Handley Mark C., Forming technique using discrete heating zones.
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Nakagaki, Yoshihisa; Tokiwa, Yuji, Frame structure of seat back for vehicle and seat back for vehicle with frame structure.
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Ishihara, Yoshimitsu; Yamamoto, Daisuke; Kanou, Takayuki, Hot bulge forming die apparatus.
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Kim, Younghun, Hydro forming apparatus for making U-shaped products.
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Mair, Scott; Gallagher, Steven William; Clement, Joshua Jacob; Bogachuk, Vladimir Vladimirovich; Wilcox, Jon A., Hydroform tube and method of forming.
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Kocer Bruce D. ; O'Connor James P. ; Bihrer Hans Otto, Hydroformed control arm.
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Beckman John A. ; Marando Richard A., Hydroformed engine cradle and cross member for vehicle body and frame assembly.
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Horton Frank A. ; Janssen Andreas G. ; Cross James M., Hydroforming die assembly for pinch-free tube forming.
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Janssen, Andrease G.; Horton, Frank A., Hydroforming flush system.
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Horton Frank A., Hydroforming of a tubular blank having an oval cross section.
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Gharib, Mohamed T., Hydroforming process and apparatus for the same.
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Freeman Richard Benjamin, Internal hydroformed reinforcements.
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Jacobs Kenneth B. (Spring Grove PA) Horton Frank A. (Rochester Hills MI) Mayo ; III Howard A. (Airville PA), Ladder frame assembly for a motor vehicle.
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Ash Stanley P. (Greenville MI), Liquid impact tool forming mold.
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Abe, Shoichi; Watanabe, Yasushi; Shimoii, Kazumi; Tomizawa, Atsushi; Uchida, Mitsutoshi, Manufacturing method for metal member with through hole.
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Golovashchenko, Sergey Fedorovich, Method and apparatus for hydro-forming an elongated tubular member.
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Birkert Arndt,DEX, Method and apparatus for manufacturing a hollow body from a tubular blank by internal high-pressure shaping.
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Nakao, Keiichiro; Sato, Takanori; Kobayashi, Takuo, Method and apparatus of forming tailored blank plate.
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Hiroshi Sakurai JP; Eizaburou Nakanishi JP; Shinji Ooe JP; Masanobu Hayasaka JP; Junji Katamura JP, Method and device for forming tubular work into shaped hollow product by using tubular hydroforming.
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Mellas,Spyros P.; Benton,Paul A.; Bruggemann,Charles J.; Goebel,Mark; Lendway, IV,Joseph M.; Ngo,Tuan A.; Parlow,Peter M.; Robinson,Carl W., Method for forming a complex-shaped tubular structure.
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Gehrig, Markus; Leppin, Christian; Schwellinger, Pius, Method for shaping an initial profile or a similar workpiece using an internal high pressure and profile therefor.
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Gehrig, Markus; Leppin, Christian; Schwellinger, Pius, Method for shaping an initial profile or a similar workpiece using an internal high pressure and profile therefor.
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Ash Stanley P., Method of forming and piercing a tube.
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Marando Richard A. ; Sanko Thomas R. ; Schrack Eric M., Method of hydroforming a vehicle frame component.
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Ilinich, Andrey M.; Kernosky, Stephen; May, Christopher John; Luckey, Jr., S. George, Method of hydroforming an extruded aluminum tube with a flat nose corner radius.
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Bihrer Otto, Method of hydroforming multi-lateral members from round tubes.
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Aufrere Christophe,FRX ; Moller Mark,FRX ; Sensby Fran.cedilla.ois,FRX ; Canteleux Joel,FRX, Method of making a vehicle seat, and a vehicle seat made by the method.
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Horton Frank A. ; Jacobs Kenneth B. ; Jacobs Jason D. ; Mayo ; III Howard A., Method of manufacturing a motor vehicle frame assembly.
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Andersen, Kurt; Stiesdal, Henrik, Method of manufacturing a rotor.
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Christofaro, Paul A.; Kiehl, Mark W., Method of manufacturing a vehicle body and frame assembly including hydroformed side rails.
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Beckman, John A., Method of manufacturing a vehicle frame assembly including hydroformed side rails having integrally formed mounting areas.
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Newport, Colin; McSwiggan, Stephen T.; Savescu, Ovidiu I., Method of manufacturing structural components from tube blanks of variable wall thickness.
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Durand Robert D., Molecular bonding of vehicle frame components using magnetic impulse welding techniques.
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Durand Robert D., Molecular bonding of vehicle frame components using magnetic impulse welding techniques.
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Durand, Robert D., Molecular bonding of vehicle frame components using magnetic impulse welding techniques.
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Durand, Robert D., Molecular bonding of vehicle frame components using magnetic impulse welding techniques.
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Durand, Robert D., Molecular bonding of vehicle frame components using magnetic impulse welding techniques.
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Horton Frank A. ; Jacobs Kenneth B. ; Jacobs Jason D. ; Mayo ; III Howard A., Motor vehicle frame assembly and method of forming the same.
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Bihrer Hans Otto, Multi-piece hydroforming tool.
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Luckey, Jr., S. George; Mallela, Kiran Kumar, Pressure sequence process for hydro-forming an extruded structural tube.
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Glaesener Pierre,LUX, Process and apparatus for forming a shaped article.
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Morris, Brian; Kessen, Mark A.; Deveny, Flavia F., Reinforced hydroformed members and methods of making the same.
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Ghiran, Mircea M; Mellas, Spyros Pete; Oberski, Paul C, Self-aligning non-pinching hydroforming dies.
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Lerch, Johann-Stefan; Schmolke, Thomas, 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.
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Luckey, Jr., S. George; Hill, David John; Friedman, Peter A.; May, Christopher John; Kernosky, Stephen; Ilinich, Andrey M., Value stream process for forming vehicle rails from extruded aluminum tubes.
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Beckman John A., Vehicle frame assembly.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Method for pinch free tube forming 원문보기

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Method for pinch free tube forming 원문보기

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이 특허를 인용한 특허 (52)

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