Using Finite Element Analysis on Dynamic Characteristics in a Micro Stepping Mill

For smaller mechatronic device, especially for micro Electronic system, a micro machining is a must. However, most investigations on vibration of a mill have been limited to the traditional type mill. In this article, vibration and dynamic characteristics of a micro mill were investigated in this study. The trend towards higher precision manufacturing technology requires producing miniaturized components. To improve micro-milled product quality, obtain a higher production rate and avoid milling breakage, the dynamic characteristics of micro milling must be studied. A stepped pre-twisted mill is used to simulate the micro mill. The finite element analysis is employed in this work. The flute length and diameter effects of the micro mill are considered. It is clear that the effects of micro mill shape parameters on vibration in a micro mill are significant. Keywords—micro system, micro mill, vibration.

[1]  Wen-Chou Chen.  Applying the finite element method to drill design based on drill deformations , 1997 .

[2]  Matthew J. Bono,et al.  The Location of the Maximum Temperature on the Cutting Edges of a Drill , 2006 .

[3]  C. Liao,et al.  Parametric instability of a spinning pretwisted beam under periodic axial force , 1995 .

[4]  Richard E. DeVor,et al.  On the Modeling and Analysis of Machining Performance in Micro-Endmilling, Part II: Cutting Force Prediction , 2004 .

[5]  Muhammad Ekhlasur Rahman,et al.  A three-dimensional analytical cutting force model for micro end milling operation , 2006 .

[6]  Kornel Ehmann,et al.  Development of curved helical micro-drill point technology for micro-hole drilling , 1998 .

[7]  Henk Nijmeijer,et al.  Prediction of regenerative chatter by modelling and analysis of high-speed milling , 2003 .

[8]  B. K Hinds,et al.  Analysis of stresses in micro-drills using the finite element method , 2000 .

[9]  Allan D. Spence,et al.  On the dynamics of ball end milling: modeling of cutting forces and stability analysis , 1998 .

[10]  Min-Sung Hong,et al.  A Study on the Instantaneous Shear Plane Based Cutting Force Model for End Milling , 2002 .

[11]  A. G. Ulsoy,et al.  COMPLEX GEOMETRY, ROTARY INERTIA AND GYROSCOPIC MOMENT EFFECTS ON DRILL VIBRATIONS , 1995 .

[12]  Simon S. Park,et al.  Investigation of micro-cutting operations , 2006 .

[13]  J.-S. Tsai,et al.  Dynamic response analysis in end milling using pre-twisted beam finite elements , 1994 .

[14]  C.-L. Liao,et al.  Structural characteristics of spinning pretwisted orthotropic beams , 1992 .