0
Research Papers

Experimental Examination of the Impact of Tool Radius on Specific Energy in Microcutting of Granite

[+] Author and Article Information
Miloš Pjević

Faculty of Mechanical Engineering,
University of Belgrade,
Kraljice Marije 16,
Belgrade 11120, Serbia
e-mails: mpjevic@mas.bg.ac.rs;
m.pjevic@gmail.com

Ljubodrag Tanović

Faculty of Mechanical Engineering,
University of Belgrade,
Kraljice Marije 16,
Belgrade 11120, Serbia
e-mail: ltanovic@mas.bg.ac.rs

Goran Mladenović

Faculty of Mechanical Engineering,
University of Belgrade,
Kraljice Marije 16,
Belgrade 11120, Serbia
e-mail: gmladenovic@mas.bg.ac.rs

Biljana Marković

Faculty of Mechanical Engineering,
University of East Sarajevo,
Vuka Karadžića 30,
East Sarajevo 71123,
Republic of Srpska, Bosnia
and Herzegovina
e-mail: biljana46m@gmail.com

1Corresponding author.

Contributed by the Materials Division of ASME for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received October 13, 2016; final manuscript received March 2, 2017; published online May 16, 2017. Assoc. Editor: Ghatu Subhash.

J. Eng. Mater. Technol 139(4), 041004 (May 16, 2017) (7 pages) Paper No: MATS-16-1290; doi: 10.1115/1.4036585 History: Received October 13, 2016; Revised March 02, 2017

The paper presents experimental results of microcutting brittle materials (granite). The analysis was conceived on the observed interaction between the workpiece and two tools of different shapes. Experiment was based on scratching the workpiece surface with diamond tools. Applied tools had tip radius R0.2 and R0.15 mm. The experiment determined the changes in the value of perpendicular and tangential components of the cutting force based on the geometric properties of tools, as well as the changes of the specific energy of microcutting granite (Jošanica and Bukovik types). The experiment has shown that reduction of tool radius causes reduction of the cutting force intensity and specific cutting energy. Because of its physical/mechanical properties, more energy is required for micromachining granite “Jošanica” than “Bukovik.” Based on the topography of the surface, the value of critical tool penetration depth was established, after which the brittle fracture is no longer present. For granite “Jošanica” values of critical penetration depth are 6 and 5 μm when micromachining with tools R0.2 and R0.15 mm, while for Bukovik those values are 6.5 and 5.5 μm. The paper should form the basis for understanding the phenomena which occur during microcutting brittle materials.

FIGURES IN THIS ARTICLE
<>
Copyright © 2017 by ASME
Your Session has timed out. Please sign back in to continue.

References

Lawn, B. R. , and Swain, M. V. , 1975, “ Microfracture Beneath Point Indentations in Brittle Solids,” J. Mater. Sci., 10(1), pp. 113–122. [CrossRef]
Lawn, B. R. , and Fuller, E. R. , 1975, “ Equilibrium Penny-Like Cracks in Indentation Fracture,” J. Mater. Sci., 10(12), pp. 2016–2024. [CrossRef]
Chandra, A. , Wang, K. , Huang, Y. , Subhash, G. , Miller, M. H. , and Qu, W. , 2000, “ Role of Unloading in Machining of Brittle Materials,” ASME J. Manuf. Sci. Eng., 122(3), pp. 452–462. [CrossRef]
Stojadinovic, S. , Tanovic, L. J. , and Savicevic, S. , 2015, “ Micro-Cutting Mechanisms in Silicon Nitride Ceramics Silinit R Grinding,” J. Chin. Soc. Mech. Eng., 36(4), pp. 291–297.
Mladenovic, G. , Bojanic, P. , Tanovic, L. J. , and Klimenko, S. , 2015, “ Experimental Investigation of Microcutting Mechanisms in Oxide Ceramic CM332 Grinding,” ASME J. Manuf. Sci. Eng., 137(3), p. 034502. [CrossRef]
Malkin, S. , and Hwang, T. W. , 1996, “ Grinding Mechanisms for Ceramics,” CIRP Ann.-Manuf. Technol., 45(2), pp. 569–580. [CrossRef]
Subhash, G. , Loukus, J. E. , and Pandit, S. M. , 2002, “ Application of Data Dependent Systems Approach for Evaluation of Fracture Modes During a Single-Grit Scratching,” Mech. Mater., 34(1), pp. 25–42. [CrossRef]
Ghosh, D. , Subhash, G. , Radhakrishnan, R. , and Sudarshan, T. S. , 2008, “ Scratch-Induced Microplasticity and Microcracking in Zirconium Diboride–Silicon Carbide Composite,” Acta Mater., 56(13), pp. 3011–3022. [CrossRef]
Anton, R. J. , and Subhash, G. , 2000, “ Dynamic Vickers Indentation of Brittle Materials,” Wear, 239(1), pp. 27–35. [CrossRef]
Ghosh, D. , Subhash, G. , Sudarshan, T. S. , Radhakrishnan, R. , and Gao, X. L. , 2007, “ Dynamic Indentation Response of Fine-Grained Boron Carbide,” J. Am. Ceram. Soc., 90(6), pp. 1850–1857. [CrossRef]
Moriwaki, T. , Shamoto, E. , and Inoue, K. , 1992, “ Ultraprecision Ductile Cutting of Glass by Applying Ultrasonic Vibration,” CIRP Ann.-Manuf. Technol., 41(1), pp. 141–144. [CrossRef]
Shamoto, E. , and Moriwaki, T. , 1999, “ Ultaprecision Diamond Cutting of Hardened Steel by Applying Elliptical Vibration Cutting,” CIRP Ann.-Manuf. Technol., 48(1), pp. 441–444. [CrossRef]
Suzuki, N. , Yokoi, H. , and Shamoto, E. , 2011, “ Micro/Nano Sculpturing of Hardened Steel by Controlling Vibration Amplitude in Elliptical Vibration Cutting,” Precis. Eng., 35(1), pp. 44–50. [CrossRef]
Axinte, D. , Butler-Smith, P. , Akgun, C. , and Kolluru, K. , 2013, “ On the Influence of Single Grit Micro-Geometry on Grinding Behavior of Ductile and Brittle Materials,” Int. J. Mach. Tools Manuf., 74, pp. 12–18. [CrossRef]
Fang, F. Z. , Wu, H. , and Liu, Y. C. , 2005, “ Modelling and Experimental Investigation on Nanometric Cutting of Monocrystalline Silicon,” Int. J. Mach. Tools Manuf., 45(15), pp. 1681–1686. [CrossRef]
Yuan, Z. J. , Zhou, M. , and Dong, S. , 1996, “ Effect of Diamond Tool Sharpness on Minimum Cutting Thickness and Cutting Surface Integrity in Ultraprecision Machining,” J. Mater. Process. Technol., 62(4), pp. 327–330. [CrossRef]
Venkatachalam, S. , Li, X. , and Liang, S. Y. , 2009, “ Predictive Modeling of Transition Undeformed Chip Thickness in Ductile-Regime Micro-Machining of Single Crystal Brittle Materials,” J. Mater. Process. Technol., 209(7), pp. 3306–3319. [CrossRef]
Liu, K. , Li, X. P. , and Liang, S. Y. , 2007, “ The Mechanism of Ductile Chip Formation in Cutting of Brittle Materials,” Int. J. Adv. Manuf. Technol., 33(9), pp. 875–884. [CrossRef]
Orowan, E. , 1955, “ Energy Criteria of Fracture,” Weld. J. Res. Suppl., 34(3), pp. 157–160.
Irwin, G. R. , 1957, “ Analysis of Stress and Strain Near the End of a Crack Traversing a Plate,” ASME J. Appl. Mech., 24, pp. 361–364.
Tanovic, L. J. , Bojanic, P. , Puzovic, R. , and Milutinovic, M. , 2011, “ Experimental Investigation of Microcutting Mechanisms in Granite Grinding,” ASME J. Manuf. Sci. Eng., 133(2), p. 024501. [CrossRef]
Liu, K. , Li, X. P. , and Rahman, M. , 2003, “ Characteristics of High Speed Micro-Cutting of Tungsten Carbide,” J. Mater. Process. Technol., 140(1), pp. 352–357. [CrossRef]
Subbiah, S. , and Melkote, S. N. , 2007, “ Evidence of Ductile Tearing Ahead of the Cutting Tool and Modeling the Energy Consumed in Material Separation in Micro-Cutting,” ASME J. Eng. Mater. Technol., 129(2), pp. 321–331. [CrossRef]

Figures

Grahic Jump Location
Fig. 7

Experimental setup for conducting the experiment consists of (a) machine-dynamometer-special fixture-workpiece-tool and (b) the system for gathering and processing data

Grahic Jump Location
Fig. 8

Graphic representation of the measurements of the vertical component FV of the cutting force for one passage of the tool

Grahic Jump Location
Fig. 6

Physical and mechanical properties of the materials used, Tanovic et al. [21]

Grahic Jump Location
Fig. 5

Cross section of the formed groove

Grahic Jump Location
Fig. 4

Diamond tools with: (a) tip radius of 0.15 mm and (b) tip radius of 0.2 mm

Grahic Jump Location
Fig. 3

Schematic representation of the experimental setup

Grahic Jump Location
Fig. 2

The stress field in the case of: (a) greater and (b) smaller tool radius

Grahic Jump Location
Fig. 1

Schematic representation of a formed groove

Grahic Jump Location
Fig. 9

Values of the perpendicular Fn and tangential Ft cutting force components when microcutting: (a) Jošanica and (b) Bukovik granite at the cutting speed of VS = 25 m/s and tool radius R0.2 mm

Grahic Jump Location
Fig. 10

Values of the perpendicular Fn and tangential Ft cutting component forces when microcutting: (a) Jošanica and (b) Bukovik granite at the cutting speed of VS = 25 m/s and tool radius of R0.15 mm

Grahic Jump Location
Fig. 11

Specific microcutting energy for (a) Jošanica and (b) Bukovik granite at the cutting speed of VS = 25 m/s and tool radii of R0.2 mm and R0.15 mm

Grahic Jump Location
Fig. 12

Grooves in the Jošanica granite, machined with the tool tip radius: (a) R0.2 mm and (b) R0.15 mm

Grahic Jump Location
Fig. 13

Grooves in the Bukovik granite machined with the tool tip radius: (a) R0.2 mm, (b) R0.2 mm, and (c) R0.15 mm

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In