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Analiza tehnologije protusmjernog deformiranja ne-aksijalno simetričnih dijelova

Authors :
Miroslav Plančak
Dejan Movrin
Dragiša Vilotić
Zlatan Car
Aljoša Ivanišević
Igor Kačmarčik
Miroslav Plančak
Dejan Movrin
Dragiša Vilotić
Zlatan Car
Aljoša Ivanišević
Igor Kačmarčik
Source :
Tehnički vjesnik; ISSN 1330-3651 (Print); ISSN 1848-6339 (Online); Volume 19; Issue 4
Publication Year :
2012

Abstract

U usporedbi s konvencionalnim metodama obrade, proizvodnja složenih dijelova hladnim istiskivanjem često nudi tehničke i ekonomske prednosti. U ranoj fazi industrijske primjene hladnim istiskivanjem su se uglavnom izgrađivali aksijalno simetrični dijelovi. U toku daljnjeg razvoja, tehnologija hladnog istiskivanja primijenjuje se i za izradu složenijih ne-aksijalno simetričnih oblika. Samim time povećan je značaj i proširena područja primjene protusmjernog deformiranja i u drugim oblastima industrije, posebice u automobilskoj industriji. U radu su prikazana istraživanja tehnologije protusmjernog deformiranja ne-aksijalno simetričnih dijelova, s akcentom na izradu dijelova pomoću žigova kvadratnog poprečnog presjeka. Ispitivane su vrijednosti deformacione sile i pritisaka na čelo žiga, kao i naponsko-deformacijsko stanje u dva karakteristična presjeka radnog komada. Proces je analiziran metodom konačnih elemenata (MKE) i eksperimentalno. Za eksperimentalna istraživanja konstruirani su i izrađeni specijalni alati.<br />Manufacturing of complex parts by cold extrusion often offers technical and economical advantages when compared with the conventional production methods. In the initial stage of industrial application of cold extrusion mainly axisymmetric components were produced. In the course of further development, application of cold extrusion has been extended to more complex and non-axisymmetric shapes. These have increased the significance and broaden the application fields of cold extrusion within other production technologies, especially in the automobile industry. Current paper elaborates non axisymmetric cold extrusion. Focus of the work is placed on the backward extrusion by the punch with square cross section. In this process load – stroke has been determined as well as punch pressure, and strain and stress distribution in two characteristic different workpiece cross sections. The process has been analyzed by FE method and experimentally. For the experimental investigation special tooling has been designed and made.

Details

Database :
OAIster
Journal :
Tehnički vjesnik; ISSN 1330-3651 (Print); ISSN 1848-6339 (Online); Volume 19; Issue 4
Notes :
application/pdf, English, Croatian
Publication Type :
Electronic Resource
Accession number :
edsoai.ocn825079792
Document Type :
Electronic Resource