Influence of the Worn Tool Affected by Built-Up Edge (BUE) on Micro End-Milling Process Performance: A 3D Finite Element Modeling Investigation

다국어 초록 (Multilingual Abstract)

Micro milling process has been utilized for several decades due to the flexibility of the process in producing complex components.
The small size of the process makes the comprehension of cutting phenomenon details more difficult. This study presents a 3D finite element modeling (3D FEM) approach for the micro end-milling process of Aluminum material (Al6082-T6). 3D FEM simulations are carried out in full slot micro end-milling and contour up milling. The model first implements the actual tool geometry and then the effect of typical built-up edge (BUE) on the milling tool. The influence of BUE on the process performance is investigated by comparing the predicted 3d chip flow shape, burr formation and cutting forces with experiments conducted on an ultra-high precision micro milling center. Simulations indicate that BUE has significant impact on the chip shape and chip load for different teeth engagements. Results prove that also burr height is negatively affected by the presence of BUE. The predicted micro milling cutting forces resulted affected by BUE with different teeth engagements. Analysis of experimental measured forces indicates comparable results in respect to simulated profiles confirming the usefulness of the develop 3D FE modelling approach.

참고문헌 (Reference)

1 Man, X., "Validation of Finite Element Cutting Force Prediction for End Milling" 1 : 663-668, 2012

2 Third Wave Systems, "Third Wave AdvantEdge User’s Manual, 2014, Version 6.1"

3 Ehmann, K., "The Mechanics of Machining at the Microscale : Assessment of the Current State of the Science" 126 (126): 666-678, 2004

4 Özel, T., "The Influence of Friction Models on Finite Element Simulations of Machining" 46 (46): 518-530, 2006

5 Kiswanto, G., "The Effect of Spindle Speed, Feed-Rate and Machining Time to the Surface Roughness and Burr Formation of Aluminum Alloy 1100 in Micro-Milling Operation" 16 (16): 435-450, 2014

6 Masuzawa, T., "State of the Art of Micromachining" 49 (49): 473-488, 2000

7 Aramcharoen, A., "Size Effect and Tool Geometry in Micromilling of Tool Steel" 33 (33): 402-407, 2009

8 Medaska, M. K., "Simultaneous Measurement of the Thermal and Tribological Effects of Cutting Fluid" 3 (3): 221-237, 1999

9 Chatterjee, S., "Simulation and Optimization of Machining Parameters in Drilling of Titanium Alloys" 62 : 31-48, 2016

10 Chen, M. J., "Research on the Modeling of Burr Formation Process in Micro-Ball End Milling Operation on Ti-6Al-4A" 62 (62): 901-912, 2012

11 Arrazola, P. J., "Recent Advances in Modelling of Metal Machining Processes" 62 (62): 695-718, 2013

12 Dornfeld, D., "Recent Advances in Mechanical Micromachining" 55 (55): 745-768, 2006

13 Özel, T., "Process Simulation Using Finite Element Method-Prediction of Cutting Forces, Tool Stresses and Temperatures in High-Speed Flat End Milling" 40 (40): 713-738, 2000

14 Movahhedy, M., "Numerical Analysis of Metal Cutting with Chamfered and Blunt tools" 124 (124): 178-188, 2002

15 Bissacco, G., "Modelling the Cutting Edge Radius Size Effect for Force Prediction in Micro Milling" 57 (57): 113-116, 2008

16 Liang, Y., "Modeling and Experimental Analysis of Microburr Formation Considering Tool Edge Radius and Tool-Tip Breakage in Microend Milling" 27 (27): 1531-1535, 2009

17 Bhattacharyya, A., "Metal Cutting: Theory and Practice" Jamini Kanta Sen of Central Book Publishers 1984

18 Jaspers, S., "Material Behaviour in Conditions Similar to Metal Cutting : Flow Stress in the Primary Shear Zone" 122 (122): 322-330, 2002

19 Deng, W. J., "Finite Element Simulation for Burr Formation Near the Exit of Orthogonal Cutting" 43 (43): 1035-, 2009

20 Davoudinejad, A., "Finite Element Simulation and Validation of Chip Formation and Cutting Forces in Dry and Cryogenic Cutting of Ti-6Al-4A" 1 : 728-739, 2015

21 Maranhão, C., "Finite Element Modelling of Machining of AISI 316 Steel : Numerical Simulation and Experimental Validation" 18 (18): 139-156, 2010

22 Thepsonthi, T., "Experimental and Finite Element Simulation Based Investigations on Micro-Milling Ti-6Al-4V Titanium Alloy : Effects of CBN Coating on Tool Wear" 213 (213): 532-542, 2013

23 Chern, G. -L., "Experimental Observation and Analysis of Burr Formation Mechanisms in Face Milling of Aluminum Alloys" 46 (46): 1517-1525, 2006

24 Pálmai, Z., "Effects of Built-Up Edge-Induced Oscillations on Chip Formation during Turning" 332 (332): 2057-2069, 2013

25 Ozcatalbas, Y., "Chip and Built-Up Edge Formation in the Machining of in situ Al4C3-Al Composite" 24 (24): 215-221, 2003

26 Aurich, J. C., "Burrs-Analysis, Control and Removal" 58 (58): 519-542, 2009

27 Ko, S. -L., "Burr Minimizing Scheme in Drilling" 140 (140): 237-242, 2003

28 Biermann, D., "Analysis of Micro Burr Formation in Austenitic Stainless Steel X5CrNi18-10" 3 : 97-102, 2012

29 Park, I. W., "A Study of Burr Formation Processes Using the Finite Element Method : Part II-The Influences of Exit Angle, Rake Angle, and Backup Material on Burr Formation Processes" 122 (122): 229-237, 2000

30 Park, I. W., "A Study of Burr Formation Processes Using the Finite Element Method : Part I" 122 (122): 221-228, 2000

31 Davoudinejad, A., "A Finite Element Prediction of Chip Flow, Burr Formation, and Cutting Forces in Micro End-Milling of Aluminum 6061-T6" 12 (12): 203-214, 2017

32 Johnson, G. R., "A Constitutive Model and Data for Metals Subjected to Large Strains, High Strain Rates and High Temperatures" 541-547, 1983

33 Davoudinejad, A., "3D Finite Element Modeling of Micro End-Milling by Considering Tool Run-Out, Temperature Distribution, Chip and Burr Formation" University of Politecnico di Milano 2016

34 Maurel-Pantel, A., "3D FEM Simulations of Shoulder Milling Operations on a 304l Stainless Steel" 22 : 13-27, 2012

35 Thepsonthi, T., "3-D Finite Element Process Simulation of Micro-End Milling Ti-6Al-4V Titanium Alloy : Experimental Validations on Chip Flow and Tool Wear" 221 : 128-145, 2015