Manufacture of Overhanging Sharp Corner
by Means of 6-Axis Control Machining with the
Apllication of Ultrasonic Vibrations
Feliciano H. JAPITANA, Koichi MORISHIGE, Shogu YASUDA
and Yoshimi TAKEUCHI
JSME International Journal Series C, Vol.46,
No. 1, 2003, March 2003, pp.306-313.
The study proposes a new machining method to create an overhanging
sharp corner. Sharp corners on overhanging surfaces are difficult to
machine in conventional way or even in 3 to 5-axis EDM especially if
the surfaces have different angles. This is due to the limitation of
feed direction and the structure of the electrode wherein it must be
symmetrical with the target shape. In present research, we try to
machine the sharp corner with overhanging surfaces using the new
machining method. The 6-axis control machining is applied to set a
non-rotational tool at an arbitrary position with arbitrary attitude
against the workpiece. During cutting, the ultrasonic vibration is
applied on the cutting edge of the tool, while the tool travels along
the feed direction. As the cutting speed is performed, the 6 axes (X, Y,
Z, A, B and C) move simultaneously, depending on the tool attitude at a
certain cutting point. From the experimental results, it is shown that
the 6-axis control ultrasonic vibration cutting is capable of producing
a sharp corner on overhanging surfaces.
http://www.ims.mce.uec.ac.jp/
2003, by K.Morishige