Papers by Keyword: Rotary Tool

Abstract: Increased emphasis on productivity and machining quality is the cause of constantly looking for progressive chip machining technologies to meet this requirement. One of this option is the use of specific turning with an actively driven tool. This unconventional turning method makes it possible to select higher feed values while keep the required tool life. However, it is important to identify the properties and all possible applications of such an actively driven tool during the machining process. The paper focuses on the resulting state of the machined surface of the workpiece in terms of surface roughness parameters due to the feed values. For the sake of clarity, the knowledge and findings of active rotation machining are compared to self-propelled rotary turning.

Abstract: In this paper the technological basics of machining the nickel-based superalloy Inconel 718 with a self-propelled rotary tool and an actively driven rotary tool are presented. The advantages compared to conventional machining with fixed round indexable inserts are discussed. In a series of experiments the influence of the tool rotation and modification of the process parameters to the chip formation process and characterization of the surface area of the workpiece are investigated. By using a multitasking lathe with a milling spindle further experiments are conducted. Thereby the influence of the direction of the tool rotation, the relative speed between tool and workpiece and the variation of the penetration angles are analysed.

Abstract: In this paper, turning with actively driven rotary tool was investigated. The influence of machining conditions such as tool rotational speed and inclination angle on the cutting edge temperature is examined experimentally. The temperature was measured by a thermocouple of constantan wire and work material. Experimental results show that the cutting temperature decreases with increasing tool rotational speed to a minimum value at a certain tool rotational speed and then increase. Next, the minimum temperature recorded by tool rotation was approximately 150oC lower than that the cutting with a non-rotating tool. Finally, the cutting temperature also decreases with the increase of inclination angle to a minimum value at an inclination angle.