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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.

Model for 6-axis control USV cutting Before 6-axis control USV cutting After 6-axis control USV cutting

IMS Lab.

2003, by K.Morishige