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1. 发明专利

GB2285403B Method of and apparatus for extruding a billet of a light metal alloy 未知
公开(公告)号：GB2285403B
公开(公告)日：1997-03-26
申请号：GB9425674
申请日：1994-12-20
申请人： HONDA MOTOR CO LTD
发明人： ANDO SHOICHI , DOI YOSHIHISA , OTSUBO MAKOTO
IPC分类号： B21C23/04 , B21C23/14 , B21C25/02 , B21C27/00 , B21K1/74
摘要： A method of, and an apparatus for extruding a billet of a light metal alloy, wherein the billet has an outer diameter smaller than a maximum configuration width and larger than a minimum configuration width of the die hole at its entry side. The billet is pressurized and extruded by a stem to form a preshaped portion which is larger than the entry side configuration of the die hole, at a frontal end portion of the billet near an entry portion of the die hole. The preshaped portion of the billet is subsequently shaped by the die hole into an extruded shape corresponding to the cross-sectional shape of the die hole and of parts formed from the extruded billet, e.g., of an automobile suspension arm. A reduced resistance and a minimized extrusion pressure upon extrusion of a light metal alloy result from the preshaping of the billet and enable realization of a compact and less expensive arrangement of the production facility.

2. 发明专利

DE4446815A1 未知
公开(公告)号：DE4446815A1
公开(公告)日：1995-06-29
申请号：DE4446815
申请日：1994-12-27
申请人： HONDA MOTOR CO LTD
发明人： ANDO SHOICHI , DOI YOSHIHISA , OTSUBO MAKOTO
IPC分类号： B21C23/04 , B21C23/14 , B21C25/02 , B21C27/00 , B21K1/74 , B21C26/00
摘要： A method of, and an apparatus for extruding a billet of a light metal alloy, wherein the billet has an outer diameter smaller than a maximum configuration width and larger than a minimum configuration width of the die hole at its entry side. The billet is pressurized and extruded by a stem to form a preshaped portion which is larger than the entry side configuration of the die hole, at a frontal end portion of the billet near an entry portion of the die hole. The preshaped portion of the billet is subsequently shaped by the die hole into an extruded shape corresponding to the cross-sectional shape of the die hole and of parts formed from the extruded billet, e.g., of an automobile suspension arm. A reduced resistance and a minimized extrusion pressure upon extrusion of a light metal alloy result from the preshaping of the billet and enable realization of a compact and less expensive arrangement of the production facility.

3. 发明专利

DE4446815B4 未知
公开(公告)号：DE4446815B4
公开(公告)日：2004-11-04
申请号：DE4446815
申请日：1994-12-27
申请人： HONDA MOTOR CO LTD
发明人： ANDO SHOICHI , DOI YOSHIHISA , OTSUBO MAKOTO
IPC分类号： B21C23/04 , B21C23/14 , B21C25/02 , B21C27/00 , B21K1/74 , B21C26/00
摘要： A method of, and an apparatus for extruding a billet of a light metal alloy, wherein the billet has an outer diameter smaller than a maximum configuration width and larger than a minimum configuration width of the die hole at its entry side. The billet is pressurized and extruded by a stem to form a preshaped portion which is larger than the entry side configuration of the die hole, at a frontal end portion of the billet near an entry portion of the die hole. The preshaped portion of the billet is subsequently shaped by the die hole into an extruded shape corresponding to the cross-sectional shape of the die hole and of parts formed from the extruded billet, e.g., of an automobile suspension arm. A reduced resistance and a minimized extrusion pressure upon extrusion of a light metal alloy result from the preshaping of the billet and enable realization of a compact and less expensive arrangement of the production facility.

4. 发明专利

GB2285403A Method and apparatus for extruding a billet of a light metal alloy 未知
公开(公告)号：GB2285403A
公开(公告)日：1995-07-12
申请号：GB9425674
申请日：1994-12-20
申请人： HONDA MOTOR CO LTD
发明人： ANDO SHOICHI , DOI YOSHIHISA , OTSUBO MAKOTO
IPC分类号： B21C23/04 , B21C23/14 , B21C25/02 , B21C27/00 , B21K1/74
摘要： A method of and an apparatus for extruding a billet of a light metal alloy, wherein the billet has an outer diameter smaller than a maximum configuration width of the die 2 at its entry side. The billet is pressurized and extruded by a stem 5 to form a preshaped portion via die 2 which is greater than the entry side configuraton of the die 1 at a frontal end portion of the billet near an entry portion of the die hole. The billet is subsequently shaped by the die 1 into an extruded shape corresponding to the cross-sectional shape, e.g. of an automobile suspension arm. A reduced resistance and a minimized extrusion pressure upon extrusion of a light metal alloy enable realization of a compact and less expensive arrangement of the production facility.

5. 发明专利

JP2000326044A COLD FORGING METHOD FOR CIRCULAR DISK PART WITH SHAFT 失效
公开(公告)号：JP2000326044A
公开(公告)日：2000-11-28
申请号：JP13956999
申请日：1999-05-20
申请人： HONDA MOTOR CO LTD
发明人： ANDO SHOICHI , ONO HIROSHI , KOBAYASHI TADASHI , KAMIKAWA MITSURU , FUKUDA FUMIO , MATSUURA HIDEKI
IPC分类号： B21K1/08 , B21J5/06 , B21J5/08 , B21J5/10 , B21J5/12 , B21K1/12 , F16C13/02
摘要： PROBLEM TO BE SOLVED: To eliminate a different series of working processes and improve yield in producing a circular disk parts, eah having an asymmetric disk section and a shaft. SOLUTION: A piece of circular disk parts with a shaft like a crank shaft is formed from an intermediate material of a multi-stepped form having a main section h and a multi-stepped shaft section j via multiple cold forging processes. In this case, when the volume of the main section h is made asymmetric with respect to the center line, the volume ratio of a thick and thin parts is made substantially 2 to 1, different inclination angles are given to left and right lower faces e and f, where a multi-steppe shaft section j and a main section h are adjacent to each other in the course of the forming, and the inclination angle of the lower face e of the thin side is made larger than the inclination angle of the lower face f of the thick side, and forging is carried out to give different friction angles at the forging.

6. 发明专利

JP2000326043A COLD FORGING METHOD OF CRANKSHAFT 失效
公开(公告)号：JP2000326043A
公开(公告)日：2000-11-28
申请号：JP13956899
申请日：1999-05-20
申请人： HONDA MOTOR CO LTD
发明人： ANDO SHOICHI , ONO HIROSHI , KOBAYASHI TADASHI , KAMIKAWA MITSURU , FUKUDA FUMIO , MATSUURA HIDEKI
IPC分类号： B62M15/00 , B21J5/06 , B21J5/08 , B21J5/10 , B21J5/12 , B21K1/08 , F16C3/06
摘要： PROBLEM TO BE SOLVED: To improve an yield and to eliminate machining in the formation of a crankshaft. SOLUTION: A crankshaft 1a is formed in a series of continuous cold forging operations, consisting of a first stage where multi-stepped shaft section j adjacent to a main section is formed by extrusion of a billet, a second stage where the diameter of the main section is expanded, and at the same time, a part of a multi-stepped shaft section j is narrowed down by a upsetting narrowing down process, a third stage where the main section is formed into an asymmetrical preform, and at the same time, the part of the multi-stepped shaft section j is drawn by the upsetting drawing process, a fourth section where an asymmetric boundary section is pressed for a finish forging of the main section, and at the same time, a center hollow is formed in the axis of the shaft, and a fifth stage where a pin hole p is blanked at the main section and, at the same time, the peripheral part of the main section is blanked.

7. 发明专利

JPH0337451B2 失效
公开(公告)号：JPH0337451B2
公开(公告)日：1991-06-05
申请号：JP8926885
申请日：1985-04-25
申请人： HONDA MOTOR CO LTD
发明人： NISHIUCHI SHOHACHI , ANDO SHOICHI , YAMANE SHUICHI
IPC分类号： B21J5/06 , B21J1/06 , B21K1/12 , B21K29/00

8. 发明专利

JPS61249642A EXTRUSION MOLDING METHOD FOR TOOTH PROFILE 失效
公开(公告)号：JPS61249642A
公开(公告)日：1986-11-06
申请号：JP9053285
申请日：1985-04-26
申请人： HONDA MOTOR CO LTD
发明人： NISHIUCHI SHOHACHI , ANDO SHOICHI , YAMANE SHUICHI
IPC分类号： B21J5/06 , B21J13/02 , B21K1/30
摘要： PURPOSE:To form the tooth profiles of a gear, spline, etc. with low pressing force and high accuracy by using a die provided with a tooth profile forming part on the inside circumference and extrusion-molding the tooth profile on the outside circumference of a shaft stock while building up the surface layer part of the stock to the bottom side of the tooth profile forming part by means of the above-mentioned die. CONSTITUTION:The tooth profile forming part 4 of the die 1 is provided with a drawing part 4a having a prescribed drawing angle alpha and a relief part 4b. The large diameter part W1 of the shaft stock W0 is slightly smaller than the inside diameter of the guide part 3. On the other hand, the outside diameter D of the small-diameter part W2 is set at such a size at which the sectional area A1 positioned on the bottom surface of the tooth profile 11 to be formed and the sectional area A2 positioned on the tip side are made equal. The desired tooth profile 11 is formed on the outside circumference of the small-diameter part W2 by the forming part 4 when the stock W0 is pressed by a punch 12 in the die 1. The fomation of the tooth profiles of the gear, spline, etc. with the low pressing force and high accuracy is thus made possible.

9. 发明专利

JP2001001031A PRODUCTION OF BILLET FOR COLD FORGING 失效
公开(公告)号：JP2001001031A
公开(公告)日：2001-01-09
申请号：JP17380399
申请日：1999-06-21
申请人： HONDA MOTOR CO LTD
发明人： ANDO SHOICHI , ONO HIROSHI , KOBAYASHI TADASHI , KAMIKAWA MITSURU
IPC分类号： B21J5/00 , B21C1/00 , C21D1/32 , C22C38/00 , C22C38/42
摘要： PROBLEM TO BE SOLVED: To provide a production method of a billet for cold forging capable of continuously performing cold forging of a high upsetting ratio without performing intermediate annealing. SOLUTION: A production method of a billet for cold forging is so that a bar steel material is subjected to first spheroidizing to increase workability as well as to refine a pearite grain, next, subjected to drawing at a area reduction of about 20% to refine an austenitic grain, and then cut to a deired dimension, successively, the dispersion of inside carbide is promoted by second spheroidizing to increase a spheriodizing ratio.

10. 发明专利

JPH08257629A PRODUCTION OF CLAD MATERIAL BY EXTRUDING METHOD 失效
公开(公告)号：JPH08257629A
公开(公告)日：1996-10-08
申请号：JP6595195
申请日：1995-03-24
申请人： HONDA MOTOR CO LTD
发明人： ANDO SHOICHI , SUGANO TADAO , OTSUBO MAKOTO , KOBAYASHI TADASHI , AKUTSU TAKESHI
IPC分类号： B21C23/22 , B21C31/00 , B23K20/00
摘要： PURPOSE: To provide a producing method, by which the thickness of surface shell can easily be changed and the high quality can be kept. CONSTITUTION: A first billet 7 for surface shell and a second billet 8 for core part are charged into a container 2 in order in the extending direction, and a clad material composed of the surface shell and the core part is produced by extending the second billet 8 with a stem 5. At this time, the thickness of the surface shell is changed by changing the compressive force acted in the second billet 8.

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