Experimental investigation of high speed milling of aluminium alloy

Sve veći zahtjevi kupaca za kvalitetnijim proizvodima prisilili su proizvodnu industriju da neprestano usavršava kontrolu kvalitete i tehnologije obrade. Jedan od osnovnih postupaka rezanja metala je glodanje. Cilj ovoga rada je istražiti optimalne parametre rezanja legure AlMgSi (EN-AW 6060), jedne od najčešće korištenih legura aluminija, primjenom čeonih glodala od neobloženog cementnog karbida. Analizirao se utjecaj geometrije alata (ugao zavojnice) i reznih uvjeta (brzina rezanja i veličina posmaka) na površinsku obradu tijekom brzog glodanja aluminijske legure. Djelovanje parametara na površinsku hrapavost ustanovljeno je analizom varijance (ANOVA). Analizirano je djelovanje parametara rezanja na indekse hrapavosti površine. Rezultati su prodiskutirani i procijenjeni.The customer´s growing demand for higher quality products has forced manufacturing industry to continuously progress in quality control and machining technologies. One of the fundamental metal cutting processes is milling. The aim of this study is to investigate optimum cutting parameters of AlMgSi alloy (EN-AW 6060), which is one of the most commonly used aluminium alloys, using uncoated cemented carbide end mills. The influence of tool geometry (helix angle) and cutting conditions (cutting velocity, and feed rate) on the surface finish produced during high speed milling of aluminium alloy have been investigated. The significance of the parameters on surface roughness has been established with analysis of variance (ANOVA). The cutting parameters regarding surface roughness performance indexes are analysed, and the findings are discussed and evaluated