Influence of asymmetric cutting edge roundings on surface topography

Influence of asymmetric cutting edge roundings on surface topography

Kategorien Zeitschriften/Aufsätze (reviewed)
Jahr 2017
Autoren Maiß, O., Grove, T., Denkena, B.:
Veröffentlicht in Production Engineering Research and Development (WGP), Juli 2017, 6 S.

For finishing operations in machining, hardened steel hard turning can compete with grinding operations by means of accuracy and productivity. In the past research focussed on the effect of process parameters and
tool macro geometry on the resulting surface roughness. Recent investigations show, that the cutting edge micro
geometry is an important factor to influence surface quality. The knowledge generated by new methods displays the importance of asymmetric cutting edge roundings on cutting forces, chip formation and tool life. It is known, that chip formation also affects the resulting surface quality. Therefore, this paper investigates the effect of asymmetric cutting edge roundings on the resulting surface roughness in hard turning of roller bearing inner rings. Cutting tests with differently shaped cutting edges and two different feed values are conducted. The resulting surface roughness is
measured. The consequent surface quality is explained by geometric coherences between uncut chip thickness and
stresses along the cutting edge and the effect of material side flow. It is found, that the cutting edge geometry and
the resulting stress distribution around the cutting edge affects the generated surface quality.

DOI 10.1007/s11740-017-0742-7