938 KB23 KB199920252015Hwang, So YoungKim, NaksooLee, Cheol-sooletnik:61številka:7/8str. 471-476, SI 84ISSN:0039-2480COBISSID:14101531URN:URN:NBN:SI:doc-MABU6C5TenZveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikfinite element methodgeometrijska točnostmetoda končnih elementovnapaka povratnega tokapotisno oblikovanje aluminijastopnja stiskanjaTaguchijeva metodaNumerical investigation of the effect of process parameters during Aluminium wheel flow-forming|Aluminium wheel flow-forming is an incremental forming technique that lengthens the material in the axial direction and thins it in the radial direction. There are many advantages to wheel flow-forming, including reducing the weight of the product, which leads to improved fuel economy. However, in terms of geometric accuracy, it is difficult to manufacture with high precision. In this study, process conditions, such as headstock load, feed rate, and radial compression, as well as the geometry of the rolls, are investigated to improve the precision of the product. To do this, a simulation was performed with SHAPE-RR, a type of FEM software. The result of the FE analysis was verified by comparing the bulging amount of the wheel. The material property of aluminium was determined through a hot compression test. As a result, geometric accuracy was improved by increasing the feed rate of the rolls. Moreover, applying a lower compression amount in the radial direction for the third roll increased the geometric precisionPotisno oblikovanje aluminijastih koles je tehnika inkrementalnega preoblikovanja, pri kateri se material podaljšuje v aksialni smeri in tanjša v radialni smeri. Potisno oblikovanje koles ima več prednosti, med katerimi je tudi manjša teža izdelka za manjšo porabo goriva. Izdelava z visoko geometrijsko točnostjo pa je težavna, ker se obdelovanec vrti in nanj istočasno delujejo trije valji. Predstavljena študija obravnava pogoje procesa kot so obremenitev vretenjaka, podajalna hitrost, radialna kompresija in geometrija valjev za izboljšanje natančnosti izdelka. V ta namen je bila opravljena simulacija s programsko opremo za analizo po metodi končnih elementov SHAPE-RRTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo