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COMPARISON OF MACHINED SURFACE QUALITY OBTAINED BY HIGH-SPEED MACHINING AND CONVENTIONAL TURNING

The aim of this article is to present some results of investigations on machined surface quality produced by high-speed cutting technologies and conventional turning. Machined surface quality demands significantly affect cost of production and increase the price of a product. Hence, obtaining a good quality of surface while lowering production costs has been metalworkers' preoccupation since beginning their jobs. One possible approach for solving that problem is introducing high-speed machining facilities into production. High-speed machining allows higher productivity, excellent surface finish and good dimensional accuracy in the manufacturing process. Therefore these technologies have considerable advantages over traditional machining technologies. In this article some high-speed machining tests on different materials with different hardness, different machinability index, and by using different experimental approaches have been illustrated. Hard turning and high-speed turn milling, in particular, have been analyzed from the aspect of applicability of these technologies on conventional machines, since these machines still can be found in many manufacturing facilities. Results obtained through these experiments confirmed advantages of high-speed technologies over conventional machining. It has been shown that common production machines, e.g., a universal lathe, in combination with new cutting tools, might be use effectively in some high-speed applications also.