각통드로잉 제품의 모서리 재료두께 변화에 영향을 미치는 인자에 대한 해석 연구 = A study on the factors influencing at corner area material thickness changes of rectangular drawing products

다국어 초록 (Multilingual Abstract)

The analysis was carried out using the press molding analysis program by applying six parameters such as material type change, material thickness, friction coefficient, r_p, r_d and blank holder pressure. As a result of CAE analysis of the soft material DC04 and the relatively hard material HX300LAD, the thickness of the punch R part of the soft material was significantly reduced. The flange portion is greatly increased in thickness in the hard material by the compression action. As a result of considering the deformation amount of 0.6mm, 1.0mm, 1.5mm according to the material thickness, the influence of the thickness is considered to be very small. In case of the material thickness of 0.6mm, the rate of change increases due to the deep drawing depth relative to the material thickness. The sizes of the punches R and die R have the greatest influence on the change in thickness of the material in drawing molding, the smaller the punch R, the thinner the edges of the product, The larger the R of the die, the greater the material thickness of the flange portion. As the coefficient of friction and the blank holder pressure increase, the frictional force of the flange portion increases, which increases the radial force in the drawing process and increases the thickness change of the flange portion.

참고문헌 (Reference)

1 이재명, "원형컵 드로잉의 공정설계 변화가 제품품질에 미치는 영향" 한국소성가공학회 11 (11): 716-723, 2002

2 이춘규, "드로잉 가공에서 다이패드의 독립형과 일체형 구조가 제품 두께에 미치는 영향에 관한 연구" 대한안전경영과학회 17 (17): 235-240, 2015

3 이춘규, "다단드로잉 가공에서 아이어닝과 다이패드 공법이 제품의 동심도와 측벽 두께에 미치는 영향" 한국기계기술학회 17 (17): 1285-1291, 2015

4 D. W. Jung, "Experimental Study on the Parameters Affecting Deep Drawing Process" 7 (7): 61-65, 2003

5 D. H. Kim, "Experimental Study on Minimizing Wall Thickness Thinning for Deep Drawing of Circular Shells" 7 (7): 393-399, 1998