Friction in machining processes generates high cutting temperatures that ultimately lead to wear and thermal damage of cutting tools. Fluid is traditionally used to reduce cutting temperature, but this can lead to environmental pollution, health hazards, and higher production costs. An alternative and novel process known as dry cutting uses no cooling liquids and has shown great promise for the machining industry to produce components in an economical and ecologically desirable manner.
Within the dry cutting device an interchangeable cooling structure is placed near the cutting tip. The authors of “Design and Analysis of an Internally Cooled Smart Cutting Tool for Dry Cutting” (J. of Engr. Manuf., 2012: 585–591) investigated how various physical characteristics of the cooling compartment affect cutting temperature. Data from one experiment that compared thickness of the cooling structure (mm) to the corresponding cutting temperature (K) is given here:
Using a significance level of 5%, can it be concluded that there is a difference among the true mean temperature measurements for the three structure thicknesses?