In-Situ temperature measurement to determine the machining behaviour of different tool coatings

A research project for the development of dry lubricant coatings for the cutting
tools of different machining operations demanded the generation of certain
experimental techniques to attain knowledge about the coatings behaviour.
The solution developed compares the coatings by observing their tempera-
ture behaviour during the machining process. A method of in-situ temperature
measurement during turning formed the basis of this solution. The method of
measurement was further modified for other operations. In addition to the
thermographic recording during dry turning, solutions for dry threading, dry
drilling and dry milling were also developed. The experimental set-ups were
generated were generated in collaboration with several project partners. For
each machining operation investigated, a specific device was developed,
which made the in-situ temperature measurement possible using the high
resolution thermographic camera.
The results were such, that it became possible to attain knowledge about the
coating's in-process temperature behaviour for each of the processes investi-
gated. Furthermore the individual coatings are compared among themselves
... mehr
and with uncoated tools. The combination of the temperature and wear
measurement yields the possibility for optimisation and further development
of suitable self-lubricant coated tools for dry machining applications.