Intermittent grinding temperature modeling for grinding system state monitoring

Abstract

A dry and wet intermittent grinding temperature mathematical model for the thermal macro- or micro-cycle was developed and studied. The heating stage corresponds to the wheel cutting segment passage time through the every contact zone point.
The cooling stage corresponds to the passage time of the grinding wheel groove (or pore) through the point mentioned. The dry intermittent grinding temperature field is formed by temperature field superposition during the indicated both heating and cooling
cycle stages under the action of heat flux on each point of the surface being ground. While during wet intermittent grinding with
grinding fluid through the grooves (or pores) of the intermittent grinding wheel, the temperature field formed at the heating stage is
the initial condition for determining the temperature field at the forced cooling stage. Based on the obtained model of the intermittent
grinding temperature field the geometrical parameters of the discontinuous (slotted, segmented, high porous) grinding wheel are
found and determined for the grinding with intermittent grinding wheel as follows: the number of cutting sections on the wheel and
the duty factor of the period of heat flux pulses. The wet intermittent grinding temperature field is also formed by summing (stitching)
the temperature fields. However, the heat exchange of the surface being ground with the cooling medium, which periodically acts on
this surface during the cooling stage, is taken into account in each macro- or micro-cycle of heat flux in intermittent grinding. The
presented article is the result of current work carried out as part of the scientific school of Professor A.V. Yakimov who was the
founder of intermittent grinding technology and automation of grinding operations.