ON THE EFFECTIVE SUBSTITUTION OF TURNING BY PERIPHERAL MILLING.

Turning operation seems to by prevailing for a production of rotational parts with standard demands on quality on machined surfaces. However, there are some applications that prevent effective use of the technology due to chip removal, entwining, clogging that prevents safe cooling of the turning tools and it ends frequently in a tool fracture or damage of the machined surface. Milling technology can suppress many of these problems, because the machining action is interrupted, chip is short and the cutting tool can machine even more surfaces in parallel. A difficult to machine welded assembly of stainless steel materials (the austenitic EN 1.4307 and the ferritic EN 1.4511) of profiled workpiece shape was selected for a substitution of the standard turning using several cutting tools by a milling and just one PVD coated monolithic cemented carbide tool. The series production of the part was selected and all quality parameters were first predicted, monitored and optimized. Finally, the economics of the production was assessed in terms of productivity and costs. All results confirmed a very stabilized production of good surface quality and long endurance of the milling tool (machined more then 30,000 pieces with one milling cutter). [ABSTRACT FROM AUTHOR]