Повышение эффективности применения твердосплавных резцов…
17
Improving the efficiency of carbide cutters use for face
grooving on the details of rocket and space machinery
© S.V. Grubyy
1
, L.A. Tatarova
2
, E.V. Vorobyeva
2
1
Bauman Moscow State Technical University, Moscow, 105005, Russia
2
ZAO “ZEM” of S.P. Korolev Rocket and Space Corporation “Energia”, Korolev,
141070, Moscow region, Russia
The article presents results of engineering research carried out for the purpose of hard-
alloy cutters testing and commissioning. The end grooves of these components were ma-
chined with hard-alloy cutters at the "Energia" Corporation.
The calculations and analy-
sis showed
that the cutters are functional, cutting is fulfilled without chattering. The ma-
chined surface quality meets the requirements. There were no cutter breakages registered
during manufacturing testing. In spite of this fact there are some breakages under the
workshop conditions. This points out to the necessity of strength calculation to be carried
out. Cutting part stress condition has great tension stress. The limit value of certain
nodes tension is approximate to hard-alloy strength. It is necessary to increase the cutter
face angle or to apply high strength hard-alloy for cutter making.
According to the re-
search we developed technological recommendations and grooving carbide cutters were
implemented in the production of parts of space hardware.
Keywords
:
face grooves, carbide cutters, strength criteria, geometrical parameters of
cutters, factor of safety, cutting mode.
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