Surface Roughness Analysis After Milling Aluminum-Ceramic Composite
[ 1 ] Instytut Technologii Mechanicznej, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ D ] phd student | [ P ] employee
2020
chapter in monograph / paper
english
- milling
- aluminum-ceramic composite
- surface roughness
- prediction models
- PCD
- CBN
EN The paper presents the results of surface roughness measurements after millingwith an endmill of an aluminum-ceramic composite.The testswere carried out on aDMC70V DECKELMAHOmachining center, and the cutting toolswere CBN and PCD cutters. The tests were carried out with variable cutting speeds and variable feeds with ant without presence of cutting fluids. For surface roughness analysis the Ra, Rq, Rz, Rt and Sa, Sq, Sz, St parameters were selected. The analysis of the influence of the variation in cutting parameters (cutting speed vc and feed f ) on the roughness of themachined surfacewas carried out under the same conditions for both tool materials. In the further part of the paper, surface roughness models were analyzed whether they include kinematic and geometric parameters in the workpiece. The kinematic-geometrical model for themilling process assumes that the main factor determining the surface roughness of the machined surface is the feed per tooth and the diameter of the milling cutter. Literature reports as well as own research allow to conclude that during milling process, feed per revolution is decisive factor for surface roughness,which is contrary to theoretical modelwhere only feed per tooth has effect on surface roughness parameters. These models were verified with experimental data and their effectiveness was assessed on this basis.
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