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The
objective of this work is the study of the High Speed Machining,
dealing with related concepts and recent developments in this area.
A reference is made to the different aspects, which contribute for
the effective application of this technology. The experimental
component groups a set of tests with the goal of evaluate the
capacity of using air turbine tools of high speed as a valid option
in the complex geometry machining. The used material was an aluminium
alloy, (7050) as a result of its crescent application in
aeronautics, automobile and moulding industries. Process parameters
are evaluated, such as speed and feed rate, observing roughness and
dimensional accuracy of the obtained surfaces. |
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a) (Ra = 0,500
mm) b) (Ra = 0,743
mm) c) (Ra =
0,943 mm)
  
d) Ra = 0,421
mm) e) (Ra = 0,606
mm) f) (Ra
= 0,660 mm)
Surface roughness; Vc = 750
m/min (a, b, c) ; Vc = 170 m/min (d, e, f).
Feed rate: a, d – 1600 mm/min; b,
e – 2000 mm/min; c, f – 2400 mm/min.
(OM 20X) |
