There is an increasing demand for product miniaturization and parts with features as low as few microns. Micromilling is one of the promising methods to fabricate miniature parts in a wide range of sectors including biomedical, electronic, and aerospace. Due to the large edge radius relative to uncut chip thickness, plowing is a dominant cutting mechanism in micromilling for low feed rates and has adverse effects on the surface quality, and thus, for a given tool path, it is important to be able to predict the amount of plowing. This paper presents a new method to calculate plowing volume for a given tool path in micromilling. For an incremental feed rate movement of a micro end mill along a given tool path, the uncut chip thickness at a given feed rate is determined, and based on the minimum chip thickness value compared to the uncut chip thickness, the areas of plowing and shearing are calculated. The workpiece is represented by a dual-Dexel model, and the simulation properties are initialized with real cutting parameters. During real-time simulation, the plowed volume is calculated using the algorithm developed. The simulated chip area results are qualitatively compared with measured resultant forces for verification of the model and using the model, effects of cutting conditions such as feed rate, edge radius, and radial depth of cut on the amount of shearing and plowing are investigated.
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June 2016
Research-Article
Micro Flat End Milling Simulation Model With Instantaneous Plowing Area Prediction
Abdolreza Bayesteh,
Abdolreza Bayesteh
Thermo Fisher Scientific,
5250 Mainway,
Burlington, ON L7L 5Z1, Canada
e-mail: reza.bayesteh@thermofisher.com
5250 Mainway,
Burlington, ON L7L 5Z1, Canada
e-mail: reza.bayesteh@thermofisher.com
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Junghyuk Ko,
Junghyuk Ko
Department of Mechanical Engineering,
University of Victoria,
PO Box 1700 STN CSC,
Victoria, BC V8W 2Y2, Canada
e-mail: jko@engr.uvic.ca
University of Victoria,
PO Box 1700 STN CSC,
Victoria, BC V8W 2Y2, Canada
e-mail: jko@engr.uvic.ca
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Martin Byung-Guk Jun
Martin Byung-Guk Jun
Mem. ASME
Department of Mechanical Engineering,
University of Victoria,
PO Box 1700 STN CSC,
Victoria, BC V8W 2Y2, Canada
e-mail: mbgjun@uvic.ca
Department of Mechanical Engineering,
University of Victoria,
PO Box 1700 STN CSC,
Victoria, BC V8W 2Y2, Canada
e-mail: mbgjun@uvic.ca
Search for other works by this author on:
Abdolreza Bayesteh
Thermo Fisher Scientific,
5250 Mainway,
Burlington, ON L7L 5Z1, Canada
e-mail: reza.bayesteh@thermofisher.com
5250 Mainway,
Burlington, ON L7L 5Z1, Canada
e-mail: reza.bayesteh@thermofisher.com
Junghyuk Ko
Department of Mechanical Engineering,
University of Victoria,
PO Box 1700 STN CSC,
Victoria, BC V8W 2Y2, Canada
e-mail: jko@engr.uvic.ca
University of Victoria,
PO Box 1700 STN CSC,
Victoria, BC V8W 2Y2, Canada
e-mail: jko@engr.uvic.ca
Martin Byung-Guk Jun
Mem. ASME
Department of Mechanical Engineering,
University of Victoria,
PO Box 1700 STN CSC,
Victoria, BC V8W 2Y2, Canada
e-mail: mbgjun@uvic.ca
Department of Mechanical Engineering,
University of Victoria,
PO Box 1700 STN CSC,
Victoria, BC V8W 2Y2, Canada
e-mail: mbgjun@uvic.ca
1Corresponding author.
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MICRO- AND NANO-MANUFACTURING. Manuscript received October 14, 2015; final manuscript received February 6, 2016; published online March 23, 2016. Assoc. Editor: Sangkee Min.
J. Micro Nano-Manuf. Jun 2016, 4(2): 021004 (6 pages)
Published Online: March 23, 2016
Article history
Received:
October 14, 2015
Revised:
February 6, 2016
Citation
Bayesteh, A., Ko, J., and Jun, M. B. (March 23, 2016). "Micro Flat End Milling Simulation Model With Instantaneous Plowing Area Prediction." ASME. J. Micro Nano-Manuf. June 2016; 4(2): 021004. https://doi.org/10.1115/1.4032757
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