Evaluation of Surface Roughness after Actively Rotary Turning Method

Abstract

Increased emphasis on productivity and machining quality is the cause of constantly looking for progressive chip machining technologies to meet this requirement. One of this option is the use of specific turning with an actively driven tool. This unconventional turning method makes it possible to select higher feed values while keep the required tool life. However, it is important to identify the properties and all possible applications of such an actively driven tool during the machining process. The paper focuses on the resulting state of the machined surface of the workpiece in terms of surface roughness parameters due to the feed values. For the sake of clarity, the knowledge and findings of active rotation machining are compared to self-propelled rotary turning.

Experimental Study and Verification of New Monolithic Rotary Cutting Tool for an Active Driven Rotation Machining

“…Compared to self-propelled technology, this monolithic tool reduces the surface roughness of the machined surface Rz by 18 μm [ 25 ] and the value of Ra parameter is stabilised and less than 0.56–1.83 μm, which was achieved in other research [ 14 ]. With ADRT technology and the use of a multi-component tool, the roughness Rz 8 μm [ 7 ] was achieved, which is a higher value compared to the highest value measured after turning with the monolith rotary tool. Moreover, the roughness values Ra were achieved lower than with assembling complex tools.…”

“…On the basis of pilot verification of the forced rotation machining process, the basic cutting parameters were determined, which were determined according to previous experimental research [ 7 ]. The workpiece rotation speed was limited by the maximum speed of the workpiece spindle, which was set up at 10 m·min −1 .…”

“…On the other hand, tools with forced rotation have rotary motion provided from an external drive. The latter does not have to be part of the machine tool, especially in the case of conventional machine tools [ 7 ]. If the technology is used for CNC (Computer Numeric Control) machines, the CNC machine can provide the tool drive.…”