“…The variability of the cavity is the result of many factors. Among the most important are: - variability of the nominal depth of cut, which depends on the kinematic characteristics of the method [ 1 ];
- the irregularities of the workpiece surface in the machining zone and formation of the side pile-ups in the abrasive grain—workpiece contact zone [ 2 , 3 ];
- local susceptibility of the workpiece material and abrasive grains [ 1 , 4 ];
- local variations of the grinding wheel active surface [ 5 , 6 ];
- vibration of the tool and abrasive grains [ 7 ];
- significant local variation (in the grain interaction zone) of temperature rise [ 8 , 9 , 10 , 11 ]; especially when machining at very high speeds, materials with low thermal conductivity produce variation in the properties of the workpiece material in micro volumes compared with the volumes of the cut layers [ 12 , 13 ];
- macro- and micro-discontinuity of chip and pile-ups formation [ 14 ];
- micro chipping of grains and changes in the grinding wheel active surface [ 15 , 16 , 17 ].
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