TY - JOUR

T1 - Piezoelectric actuator design for ultrasonically assisted deep hole drilling

AU - Potthast, C.

AU - Eisseler, R.

AU - Klotz, D.

AU - Wallaschek, J.

AU - Heisel, U.

N1 - Funding Information: Acknowledgements Thanks belong to the German Research Council (DFG) for funding this research project as grant no. WA 564/10-1. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2007/5/4

Y1 - 2007/5/4

N2 - From different chipping machining processes it is known that a superposition of the cutting kinematics with additional vibration energy increases material removal rate and tool life. Concerning the deep drilling process in the scope of smallest diameters from 0.9 to 6 mm insights to this so called hybrid processes are still awaited. Preliminary investigations indicated that here is high, so far unused potential. The goal of current research is an increase in effectiveness of the deep hole drilling process by superimposing additional vibration energy in ultrasonic frequency range by means of a piezoelectric transducer and low-frequency vibrations in the range of acoustic frequencies as well. Positive effects can appear in a couple of areas, e.g. achievable surface quality, feeding force, drilling torque, shape and length of chips, feasibility of machining ceramic materials and tool wear. This paper describes mainly the ultrasound conform design of the vibration unit. Furthermore issues of contactless energy transfer into a rotating tool and model based design of piezoelectric transducers will be addressed.

AB - From different chipping machining processes it is known that a superposition of the cutting kinematics with additional vibration energy increases material removal rate and tool life. Concerning the deep drilling process in the scope of smallest diameters from 0.9 to 6 mm insights to this so called hybrid processes are still awaited. Preliminary investigations indicated that here is high, so far unused potential. The goal of current research is an increase in effectiveness of the deep hole drilling process by superimposing additional vibration energy in ultrasonic frequency range by means of a piezoelectric transducer and low-frequency vibrations in the range of acoustic frequencies as well. Positive effects can appear in a couple of areas, e.g. achievable surface quality, feeding force, drilling torque, shape and length of chips, feasibility of machining ceramic materials and tool wear. This paper describes mainly the ultrasound conform design of the vibration unit. Furthermore issues of contactless energy transfer into a rotating tool and model based design of piezoelectric transducers will be addressed.

KW - Deep hole drilling

KW - Model based design of piezoelectric transducers

KW - Superimposed vibrations

KW - Ultrasonically assisted machining

UR - http://www.scopus.com/inward/record.url?scp=43249100379&partnerID=8YFLogxK

U2 - 10.1007/s10832-007-9132-4

DO - 10.1007/s10832-007-9132-4

M3 - Article

AN - SCOPUS:43249100379

VL - 20

SP - 187

EP - 192

JO - Journal of electroceramics

JF - Journal of electroceramics

SN - 1385-3449

IS - 3-4

ER -