European Journal of Scientific Research (ISSN: 1450 ... - EuroJournals

© European Journal of Scientific Research, Vol 7, No 5, 2005
2 . METHOD ANS MEANS
2.1 Simulation of machining
This part of the study was made on the bench of machining developed in the laboratory of
machining of the E.N.S.T.I.B. (University of NANCY).
Fig. 1 Devices for capturing cutting forces
This device, not only simulates on samples of reduced size of milling operations (toupillage), but
still makes it possible to measure and record powers and efforts caused by the tool on the samples
tested.
This device of milling can be regulated to simulate various conditions : types of tools, depth of
cut, speed of transport, rotational frequency... and to determine the best adjustments to adopt. The
samples (a total of 54 test-tubes were selected) having to be used for the tests were drawn from
the panels quoted as a preliminary and machined with a carbide-tipped tool with a diameter 170
mm for a rotational frequency of 6000 rpm for respective combinations speed of transport (17, 20
and 23 m/mn) and depths of cut (2, 2.5 and 3 mm).
2.2 MATERIAL OF MEASUREMENT
2.2.1 Turntable of measurement
The efforts following the three directions will be measured using a dynamometer of the type
Kistler 9257A principle of which is based on the physical properties of pièzo-electric materials
(surfaces of certain crystals are charged electrically when the crystal is subjected to mechanical
activities work. The platform is designed for the measurement of the forces according to three
components (X, Y, Z). All channels X, Y, Z are connected respectively in parallel and
measurement is independent of the point of the application force.