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1. 发明专利

JPH04172180A METHOD FOR WELDING ALUMINUM ALLOY PLATE PRESS FORMING MEMBER 失效
公开(公告)号：JPH04172180A
公开(公告)日：1992-06-19
申请号：JP29784290
申请日：1990-11-02
申请人： HONDA MOTOR CO LTD , KIKUCHI PURESU KOUGIYOU KK
发明人： ITO TAKANOBU , YONETANI MASATAKA
IPC分类号： B23K9/23 , B23K9/00
摘要： PURPOSE:To eliminate the need for a correction work after welding and to realize the improvement of productivity by providing the relief part of the quantity of extension/contraction of heating/cooling by welding. CONSTITUTION:Plural recessed loosing parts 9 and plural projecting weld zones 10 are formed alternatively along a curved edge (e) on the flange 81 of a second press forming member 32 made of an Al alloy plate. Flanges 71 and 72 of a first press forming member 31 corresponding to this have smooth surfaces. In performing edge welding Ew, the first flange 81 of the second press forming member 32 with a small curved radius extends/contracts the respective loose parts 9 and follows the extension/contraction of the first flange 71 of the first press forming member 31 with a large curved radius and further, heat radiation actions of cavities 11 formed by the first flange 71 and the respective loose parts 9 are operated and welding distortion is remarkably relaxed and the need for correction work is eliminated.

2. 发明专利

JPH04237527A MANUFACTURE OF PRESS DIE 失效
公开(公告)号：JPH04237527A
公开(公告)日：1992-08-26
申请号：JP1839591
申请日：1991-01-18
申请人： HONDA MOTOR CO LTD , KIKUCHI PURESU KOUGIYOU KK
发明人： NAKAYAMA ISANAO , YONETANI MASATAKA
IPC分类号： B21D37/20
摘要： PURPOSE:To provide a manufacturing method that a man hour for sticking a sheet takes minimum value and remarkable reduction of cost can be obtained by sticking heat-resistant sheets on vertical wall parts only of the male die to execute forming with a female die. CONSTITUTION:The heat-resistant sheets 7 are stuck to the model part 3 of the male die 1 which is finished to a prescribed dimensional accuracy at a thickness equivalent to the plate thickness of a product to be press-formed. The sheets 7 are not stuck to the upper surfaces 4-1, 4-6, 5-1, 5-3 of the model part 3. The outside of a blank hold 5 on the periphery of this male die 1 is enclosed by a molding flask 8 and a cavity making up the female die part is filled with low melting point material 9. The surface of the female die 10 obtained is ground and finished. The sheets 7 are peeled from the male die 1. The metal plate W can be formed to a prescribed shape as a clearance S equivalent to the plate thickness is held between these upper and lower dies 1, 10. This system is economically exceedingly profitable when dies are manufactured for production in small quantities and trial manufacture.

3. 发明专利

JPH04174000A PRODUCTION OF ALUMINUM ALLOY PARTS FOR AUTOMOBILE BODY 失效
公开(公告)号：JPH04174000A
公开(公告)日：1992-06-22
申请号：JP29784390
申请日：1990-11-02
申请人： HONDA MOTOR CO LTD , KIKUCHI PURESU KOUGIYOU KK
发明人： HAYAZAKI MASAAKI , YONETANI MASATAKA
IPC分类号： B21D22/20 , C25D13/20
摘要： PURPOSE:To improve the productivity of Al alloy parts for automobile bodies including deep drawing and electrodeposition painting in the production process and to improve the characteristics of coated film surfaces by specifying the surface roughness of both surfaces of an Al alloy sheet. CONSTITUTION:The Alloy sheet having >=5mum and

4. 发明专利

JPH0515932A METHOD AND DEVICE FOR FORMING PROJECTING PART ON NON-MAGNETIC METAL PLATE 失效
公开(公告)号：JPH0515932A
公开(公告)日：1993-01-26
申请号：JP19345191
申请日：1991-07-08
申请人： HONDA MOTOR CO LTD , KIKUCHI PRESS KOGYO KK
发明人： NAKAYAMA ISANAO , NAGASHIMA TERU , YONETANI MASATAKA , MIZUKI NAOKI , MATSUOKA HIROMI
IPC分类号： B21D22/02 , B21D28/02 , B21D28/14 , B21D35/00 , B21D43/24
摘要： PURPOSE:To surely take out every one sheet at the time when the metal sheet is attracted and taken out without close contacting metal sheet mutually by making the projecting parts between the upper and lower parts of the laminated metal plate, and without fitting the projecting part in the recessing part generated at the forming time of the above in the laminated state by deviating the phase of the projecting part between the upper and lower metal plates, on the time when the non-magnetic metal plate is laminated. CONSTITUTION:On the time for forming the projecting part on the parting the scrap part after drawing, etc., on the coil plate composed of the non-magnetic plate, one part 9A of the punch 9, etc., for forming plural projecting parts is projected with the cam piece 10, on the other side, the forming of the projecting part 6, etc., of the metal plate is executed only with one part of the punch 9A, by sinking 9B, on the time of the projecting part forming time of the next metal plate, the projecting part forming is executed only with the punch 9 by advancing/retreating the cam piece 10, projecting the punch 9B and sinking the punch 9A, the projecting part is formed on this method and device by repeating the above and deviating the phase of the projecting part for every sheet of metal plate.

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