Results 181 to 190 of about 21,456 (204)
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International Journal of Mechanical Sciences, 2017
Abstract Micro-milling is a promising approach to repair the micro-defects on the surface of potassium dihydrogen phosphate (KDP) crystal. However, KDP crystal is difficult to machine due to its properties of soft-brittle and easy deliquescence. This study investigates the minimum undeformed chip thickness hm and the size effect in micro end-milling ...
Ni Chen, Mingjun Chen, Chunya Wu
exaly +2 more sources
Abstract Micro-milling is a promising approach to repair the micro-defects on the surface of potassium dihydrogen phosphate (KDP) crystal. However, KDP crystal is difficult to machine due to its properties of soft-brittle and easy deliquescence. This study investigates the minimum undeformed chip thickness hm and the size effect in micro end-milling ...
Ni Chen, Mingjun Chen, Chunya Wu
exaly +2 more sources
Materials Today: Proceedings, 2020
Abstract Machining plays an important role in the industrial process of the economy through the way it contributes around 5% of the country’s total economy. Various shapes of final products from raw material are processed by machining, which in turn leads to the formation of chips.
Shrikant U. Gunjal +2 more
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Abstract Machining plays an important role in the industrial process of the economy through the way it contributes around 5% of the country’s total economy. Various shapes of final products from raw material are processed by machining, which in turn leads to the formation of chips.
Shrikant U. Gunjal +2 more
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Dynamic Simulation of the Micro-Milling Process Including Minimum Chip Thickness and Size Effect
Key Engineering Materials, 2012Micro-milling with a cutting tool is a manufacturing technique that allows production of parts ranging from several millimeters to several micrometers. The technique is based on a downscaling of macroscopic milling process. Micro-milling is one of the most effective process to produce complex three-dimensional micro-parts, including sharp edges and ...
François Ducobu +2 more
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The International Journal of Advanced Manufacturing Technology, 2021
The increasing market demand for smaller products requires the development of micromachining processes. This, in turn, enhances the importance of knowledge about the phenomenon of chip formation and its characteristics at the microlevel. Conventional machining generally assumes that the tool cutting edge is perfectly sharp, and that it usually does not
Tatiany Mafra da Silva +2 more
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The increasing market demand for smaller products requires the development of micromachining processes. This, in turn, enhances the importance of knowledge about the phenomenon of chip formation and its characteristics at the microlevel. Conventional machining generally assumes that the tool cutting edge is perfectly sharp, and that it usually does not
Tatiany Mafra da Silva +2 more
openaire +1 more source
Modeling the Minimum Chip Thickness in Orthogonal Micro-Cutting Based on Plastic Strain Gradient
Advanced Materials Research, 2009In micro-cutting, the uncut chip thickness is comparable or even less than the tool edge radius and as a result a chip will not be generated if the uncut chip thickness is less than a critical value, viz., the minimum chip thickness. Knowledge of the minimum chip thickness plays a key role of the selection of appropriate machining conditions and ...
Ji Hua Wu, Zhan Qiang Liu
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IEEE International Digest on Microwave Symposium, 2002
The design and fabrication of a novel planar Schottky diode with greatly reduced shunt capacitance for millimeter- and submillimeter-wave applications is described. The dominant pad-to-pad shunt capacitance is minimized by replacing the substrate GaAs with a low-dielectric substitute.
W.L. Bishop +4 more
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The design and fabrication of a novel planar Schottky diode with greatly reduced shunt capacitance for millimeter- and submillimeter-wave applications is described. The dominant pad-to-pad shunt capacitance is minimized by replacing the substrate GaAs with a low-dielectric substitute.
W.L. Bishop +4 more
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Estimation of minimum chip thickness for multi-phase steel using acoustic emission signals
2010The determination of minimum chip thickness is important for establishing the lower limit of the feasible process window in micro mechanical machining for a given tool and workpiece material. The minimum chip thickness is encountered in micro milling operations owing to the variation in chip load as predicted by the chip density function.
Mian, A. +2 more
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Advanced Materials Research, 2010
In this paper, the effect of minimum chip thickness on cutting temperature in micro-end- milling of aluminum alloy Al2024-T6 using a tungsten-carbide cutter are investigated and analyzed. The three-dimensional coupled thermal-mechanical finite element model is adopted to determine the effects of varying depth of cut on cutting temperature considering ...
Ying Chun Liang +3 more
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In this paper, the effect of minimum chip thickness on cutting temperature in micro-end- milling of aluminum alloy Al2024-T6 using a tungsten-carbide cutter are investigated and analyzed. The three-dimensional coupled thermal-mechanical finite element model is adopted to determine the effects of varying depth of cut on cutting temperature considering ...
Ying Chun Liang +3 more
openaire +1 more source
International Journal of Mechatronics and Manufacturing Systems, 2013
In mechanical micro-machining (MMM), the tool edge cannot be considered to be sharp due to the finite edge radius observed at the micro-scale. The uncut chip thickness is comparable to the tool edge radius and sometimes it is less than the tool edge radius. In MMM, below certain critical uncut chip thickness, only elastic deformation takes place and no
U. Srinivas Rao, L. Vijayaraghavan
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In mechanical micro-machining (MMM), the tool edge cannot be considered to be sharp due to the finite edge radius observed at the micro-scale. The uncut chip thickness is comparable to the tool edge radius and sometimes it is less than the tool edge radius. In MMM, below certain critical uncut chip thickness, only elastic deformation takes place and no
U. Srinivas Rao, L. Vijayaraghavan
openaire +1 more source
2020
Minimum uncut (tm) chip thickness is the promising factor of the microendmilling process, which is affected by many factors. The tool geometry is one among them. In this work, the effect of different tool geometries, two flutes and four flutes of microendmill (500 μm diameter), are investigated, during slot milling of copper alloy (BSS 249) by ...
M. Prakash +3 more
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Minimum uncut (tm) chip thickness is the promising factor of the microendmilling process, which is affected by many factors. The tool geometry is one among them. In this work, the effect of different tool geometries, two flutes and four flutes of microendmill (500 μm diameter), are investigated, during slot milling of copper alloy (BSS 249) by ...
M. Prakash +3 more
openaire +1 more source