@The_real_janderson
From Chapter 6 of this book "Practically, all of the energy generated in metal cutting
operations is dissipated in plastic deformation and friction". That seems a lot more reasonable than “all of the energy associated with chip formation is converted to thermal energy”. After all, isn’t it really the cutter being pushed through the workpiece that requires and consumes the energy? Wouldn’t the heat generated just be a byproduct of that mechanical energy expenditure and increase with increasing cutting energy? Don’t chipload increases require cutting energy increases which generate more heat?
2019-08-31 Edit: My interpretation is that Shaw claims that the Count measured all of the heat energy generated in the milling processes and determined that it was essentially equal to the total energy input, so most/all of the milling input energy was converted to heat energy. The Count apparently determined this by measuring the water’s temperature rise caused by the heat energy that was already consumed by the milling process! What am I missing?