Development of Multi-Stage Stamping of Miniature Sized Square Cup
In contrast to traditional manufacturing applications, small-scale manufacturing processes usually require sophisticated equipment, which generally involves high cost and low productivity. On the other hand, miniature stamping processes of thin materials can yield high productivity with relatively inexpensive equipment However, it is well known that the formability of thin material using this type of process is not very good, and the possible shapes that can be produced via miniature stamping have, until now, been relati vely simple. This study was motivated by the presumption that, if the problems related to formability can be solved, then miniature-scale stamping of complicated shapes can be realized. This research was carried out to demonstrate the feasibility of miniature slam ping for the alternative production processes of manufacturing micro system technologies such as lithography and electroplating proc esses. In this study, multi-stage stamping of square cup, ranging drawing, redrawing and ironing has been chosen to show the feasible limit of miniature stamping. To improve formability, annealing was chosen as a means of improving the material properties, and the use of optimal blank shapes was chosen as a means of addressing process issues. Optimal annealing conditions were identified by examining the microstructures of the annealed material, and the optimal shape of the blank was determined using the radius vector method. The combination of the annealing and the use of optimal blanks improved the formability considerably.
Miniature Stamping Multi-stage Deep Drawing Optimal Blank Ironing Redrawing
Hyun Bo Shim Sun Jun Kwon
School of Mechanical Engineering Yeungnam University, Gyongsan, Korea 712-749
国际会议
2nd Asian Workshop on Macro/Nano Forming Technology(AWMFT-2009)(第2届亚洲微米纳米技术研讨会)
长沙
英文
615-620
2009-10-25（万方平台首次上网日期，不代表论文的发表时间）