Computer-assisted design of sheet metal component formed from stainless steel: Računalniško podprto načrtovanje preoblikovanja pločevinske komponente iz nerjavne pločevine

The development of the product from stainless steel, which is produced for the client in large series, is presented. Technological optimisation was mainly focussed on the design of the deep drawing process in a single operation, which proved to be technologically unstable and therefore unfeasible for the prescribed shape of the product. Testing of prototype products showed unacceptable wrinkling due to the coneshaped geometry of the workpiece. For this purpose, the research work was oriented towards technological optimisation of forming operations and set-up of proper phase plan in order to eliminate the wrinkling of the material. Testing of several different materials of the same quality was performed to determine the appropriate input parameters used for digital analyses. The analyses were focussed towards the set-up of optimal forming process and appropriate geometry of the corresponding tool, which allowed deep drawing of the workpiece without tearing and/or wrinkling of the material. Performed analyses of the forming process in the digital environment were tested with experiments, which showed a good correlation between the results of both development concepts. Predstavljen je razvoj izdelka iz nerjavnega jekla, ki se za naročnika izdeluje v masovni proizvodnji. Tehnološka optimizacija je bila fokusirana predvsem na načrtovanje procesa globokega vleka v eni operaciji, ki se je izkazala za tehnološko nestabilno in zaradi tega neizvedljiva za zahtevano obliko izdelka. Testiranje prototipne serije je pokazalo nedopustno gubanje materiala zaradi konične oblike preoblikovanca. Zaradi tega so raziskave bile usmerjene v tehnološko optimizacijo preoblikovalnih operacij in vzpostavitev ustreznega metodnega plana za odpravo gubanja materiala. Testiranja številnih materialov enake kakovosti so služila izbiri ustreznih vhodnih parametrov digitalnih analiz. Te smo fokusirali predvsem v vzpostavitev optimalnega preoblikovalnega procesa in izbire ustrezne geometrije pripadajočega orodja. Ta omogoča globoki vlek preoblikovanca brez gubanja in/ali trganja materiala. Izvedene analize preoblikovalnega procesa v digitalnem okolju so bile preverjene z eksperimenti, ki so pokazali dobro ujemanje rezultatov obeh razvojnih konceptov.