자동차 커플러 부품(Al5052-H32)의 프로그래시브 드로잉 공정 시 두께 변화 고찰

Abstract

Progressive drawing processing is one of the manufacturing processes used to mass-produce a variety ofproducts on the industrial site. In this study, the goal is to achieve a uniform product thickness of at least 1.3mm byreducing the wall thickness of the coupler parts used in automotive air conditioning systems to within 15% usingA5052-H32 materials. The progressive die was designed using Blank's law of volume invariance. Due to thecharacteristics of the drawing process, the material thickness in the punch R part decreases and the thickness in the dieR part increases. When designing the progressive die of the coupler part, an ironing method, a push back method, anda stand-alone die pad method were applied to each process to design a mold in consideration of the drawing rate andto artificially adjust the thickness change. The suitability of the method used in die design was investigated by measuringthe thickness change of forming parts for each process. In the final part, it was confirmed that the thickness measurementvalues of the five regions of a radial line were implemented as 1.34-1.36 mm.