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인텀샤프트 일체형 유니버셜 파이프 조인트용 다단조금형의 단조공정해석
권혁홍,문관진,송승은,Kwon, Hyuk-Hong,Moon, Kwan-Jin,Song, Seung-Eun 한국생산제조학회 2010 한국생산제조학회지 Vol.25 No.3
This study was aimed at the design of the dies for the unified pipe joint of the intermediate shaft using the computer simulation to shorten the period of production, on the basis of the process planning which was designed by the field experts. In the computer simulation, 'Deform-3d' and 'eesy-DieOpt' have been used, which are the commercial process analysis and die design program. Through the process analysis, we could know the propriety of the forming process, the inner pressure of the die and the suitable fitting pressure between the insert and the sleeve which was not showing any positive tangential stresses in the insert. Through the simulation of die design, we could know the number of the stress ring, the diameter ratios, the stresses of the die, the shrink fitting tolerance and temperature in the condition of the already determined maximum outer die diameter of the multi-stage former. The validity of the die design using the computer simulation was analyzed by the experiments and the results were satisfactory. As the results of this study, the new and easy die design system for multi-forging has been developed.
자동차용 일체형 유니버셜 샤프트 조인트의 냉간단조 공정해석
권혁홍(Hyuk-Hong Kwon),문관진(Kwan-Jin Moon),송승은(Seung-Eun Song),김오승(Oh-Seung Kim) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
This study was aimed at the design of the dies for the unified shaft joint using the computer simulation to shorten the period of production, on the basis of the process planning which was designed by the field experts. In the computer simulation, ‘Deform-3d’ and ‘Eesy-DieOpt’ have been used, which are the commercial process analysis and die design program. Through the process analysis, we could know the propriety of the forming process, the inner pressure of the die and the suitable fitting pressure between the insert and the sleeve which was not showing any positive tangential stresses in the insert. Through the simulation of die design, we could know the number of the stress ring, the diameter ratios, the stresses of the die, the shrink fitting tolerance and temperature in the condition of the already determined maximum outer die diameter of the multi-stage former. The validity of the die design using the computer simulation was analyzed by the experiments and the results were satisfactory. As the results of this study, the new and easy die design system for multi-forging has been developed.
A Study on the Simplified Die Design for the Cold Forging of Spur Gears
권혁홍(Hyuk Hong Kwon) 한국생산제조학회 2007 한국생산제조시스템학회 학술발표대회 논문집 Vol.2007 No.5
The near net shape forging of gears offers significant technical and economic advantages over other forms of manufacture. These potential benefits can however only be realized by careful die design. This paper describes a computer-based methodology for achieving this. A Visual-BASIC program has been developed on a rule based system that enables optimal design of the dies taking into account the elastic deflections generated in shrink-fitting the die inserts and that caused by the stresses generated in the forging process. The method also enables the profile of the spark erosion electrode to be determined. An example of the application to forging spur gears is given.
권혁홍(Hyuk-Hong Kwon),이봉규(Bong-Kyu Lee) 한국생산제조학회 2005 한국생산제조학회지 Vol.14 No.3
Design of drawing dies was used in real industrial environments. It was designed by CAD software in many small & medium companies, but many products require various types, and sizes. Therefore many companies are required to reduce process time and design mistakes. In this paper, it was developed the automatic program in order to learn and use easily for design of the drawing dies. It was composed with Visual LISP/DCL language in a commercial CAD package, AutoCAD, and GUI in design system. The system is based in the knowledge base system which is involved a lot of expert's know-how. We have built database of design type and detail sizes. The automatic design system requires basic product type and sizes, and then the system accesses to the database and finds out sizes by comparing with input parameters, after then finally generates drawing dies file.
인텀샤프트 일체형 유니버셜 파이프 조인트용 다단조금형의 단조공정해석
권혁홍(Hyuk-Hong Kwon),문관진(Kwan-Jin Moon),송승은(Seung-Eun Song) 한국생산제조학회 2010 한국생산제조학회지 Vol.19 No.1
This study was aimed at the design of the dies for the unified pipe joint of the intermediate shaft using the computer simulation to shorten the period of production, on the basis of the process planning which was designed by the field experts. In the computer simulation, ‘Deform-3d’ and ‘eesy-DieOpt’ have been used, which are the commercial process analysis and die design program. Through the process analysis, we could know the propriety of the forming process, the inner pressure of the die and the suitable fitting pressure between the insert and the sleeve which was not showing any positive tangential stresses in the insert. Through the simulation of die design, we could know the number of the stress ring, the diameter ratios, the stresses of the die, the shrink fitting tolerance and temperature in the condition of the already determined maximum outer die diameter of the multi-stage former. The validity of the die design using the computer simulation was analyzed by the experiments and the results were satisfactory. As the results of this study, the new and easy die design system for multi-forging has been developed.
자동차용 일체형 유니버셜 샤프트 조인트의 냉간단조 공정 유한요소해석
권혁홍(Hyuk-Hong Kwon),송승은(Seung-Eun Song),김오승(Oh-Seung Kim) 한국생산제조학회 2011 한국생산제조학회지 Vol.20 No.5
This study was aimed at the design of the dies for the unified shaft joint using the computer simulation to shorten the period of production, on the basis of the process planning which was designed by the field experts. In the computer simulation, ‘Deform-3d’ and ‘Eesy-DieOpt’ have been used, which are the commercial process analysis and die design program. Through the process analysis, we could know the propriety of the forming process, the inner pressure of the die and the suitable fitting pressure between the insert and the sleeve which was not showing any positive tangential stresses in the insert. Through the simulation of die design, we could know the number of the stress ring, the diameter ratios, the stresses of the die, the shrink fitting tolerance and temperature in the condition of the already determined maximum outer die diameter of the multi-stage former. The validity of the die design using the computer simulation was analyzed by the experiments and the results were satisfactory. As the results of this study, the new and easy die design system for multi-forging has been developed.