Design and characterization of a PZT driven micromachining tool based on single-point tool tip geometry

Cutting force model of orbital single-point micromachining tool

“…The total cutting force on the tip is the summation of force from all disks (Fig. 7) frequency of up to 2 kHz and orbital radii that can be varied between 0 and 30 mm [4]. The micro-orbital tool was mounted to the z-axis of a CNC machining center (Haas TM-1) in order to generate the feeds for machining.…”

“…In orbital micromachining, the number of cutting edges is infinite because any point on the circumference surface of the tool tip can be used as a cutting edge [3,4], unlike a typical milling tool where the number of cutting edges is determined by the number of flutes. The cross-section of the tool can be circular, which makes this tool strongest compared to other geometries such as square or triangular shapes of comparable size.…”

“…The cutting motion of the tool is achieved by using actuators such as piezo tubes to generate a high frequency micro-orbital motion of the tool tip in a circular trajectory [4]. Bamberg and Heamawatanachai [3] have shown that the orbital micromachining of a single-point diamond tool tip can be used to machine three-dimensional micro-features into various types of materials that included stainless steel, titanium alloy and glass.…”

“…Bamberg and Heamawatanachai [3] have shown that the orbital micromachining of a single-point diamond tool tip can be used to machine three-dimensional micro-features into various types of materials that included stainless steel, titanium alloy and glass. Furthermore, this technique was shown to machine single crystal silicon in the ductile regime [4].…”

Simulation and Experimental Study on Vibration and Sound Radiation Control with Piezoelectric Actuators

“…[13][14][15][16]. Polyvinylidenefluoride (PVDF) and lead zirconate titanate (PZT) actuators have been used in practice for vibration control and precise positioning [17][18][19]. Usually, PZT/PVDF actuators are bonded to the surfaces of or imbedded into structures so that structures can response smartly to external disturbance [20][21][22].…”