Machining with active driven rotary tool on compound multiaxis machine tool.(Report)

1. INTRODUCTION

Many researches have been carried out to seek effective methods to overcome cutting temperature rise when high-speed cutting was applied (Venuvinod et al., 1983). One of the novel methods to decrease the cutting temperature as well as to increase the machining productivity is to use a rotary cutting tool in turning (Shaw et al., 1952). As the cutting tool rotates and it is cooled during the non-cutting time in one rotation of the tool, it is expected that the temperature of the tool will decrease compared with conventional turning. It is also expected that the rotary cutting tool can be used for high speed cutting of difficult-to-cut materials such as nickel based and titanium based alloys (Lei et al., 2002).

Several types of the rotary cutting tools have been developed in the past, which are basically classified into two types namely actively driven and self-propelled. In the driven tool, the rotational motion of the cutting tool is provided by the external source such as a motor spindle mechanism, while the self-propelled tool is driven primarily by the cutting forces acting to the cutting tool. Usage of rotary tool has not been applied in real production process. This method had been only developed on the conventional machine tool, then tooling system was lack in stiffness, flexibility and productivity. …