Journal ArticleDOI
Comparative evaluation of laser-assisted micro-milling for AISI 316, AISI 422, TI-6AL-4V and Inconel 718 in a side-cutting configuration
Jonathan A. Shelton,Yung C. Shin +1 more
TLDR
In this article, the effects of laser-assisted micro-milling on the machined surface finish, edge burrs, tool wear and workpiece microstructure were evaluated experimentally.Abstract:
This paper is focused on numerical modeling and experimental evaluation of laser-assisted micro-milling (LAMM). An experimental setup consisting of a 25 W CO2 laser, three-axis CNC linear stages and a high-speed spindle was used to implement the LAMM process. Micro-endmills between 100 and 300 µm in diameter were used to perform side-cutting operations with and without laser preheat on four materials: AISI 316, AISI 422, Ti-6Al-4V and Inconel 718. A three-dimensional transient finite-volume-based thermal model was used to analytically predict appropriate process parameters on the basis of material-removal temperatures. The effects of LAMM on the machined surface finish, edge burrs, tool wear and workpiece microstructure were evaluated experimentally.read more
Citations
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Journal ArticleDOI
Multi-objective optimization using Taguchi based grey relational analysis for micro-milling of Al 7075 material with ball nose end mill
Emel Kuram,Babur Ozcelik +1 more
TL;DR: In this article, the effects of spindle speed, feed per tooth and depth of cut on tool wear, force and surface roughness were investigated using first-order models with interaction.
Journal ArticleDOI
Hybrid manufacturing in micro/nano scale: A Review
Won-Shik Chu,Chung-Soo Kim,Hyun-Taek Lee,Jung-Oh Choi,Jae Il Park,Ji-Hyeon Song,Ki-Hwan Jang,Sung-Hoon Ahn,Sung-Hoon Ahn +8 more
TL;DR: In this article, a total of 57 micro and nano scale hybrid manufacturing processes are reviewed in terms of process timing and process type, and features and advantages are described for each of these classifications.
Journal ArticleDOI
Thermal and mechanical modeling analysis of laser-assisted micro-milling of difficult-to-machine alloys
TL;DR: In this paper, a 3D transient finite volume prismatic thermal model is used to quantitatively analyse the material temperature increase in the machined chamfer due to laser-assist during the LAMM process.
Journal ArticleDOI
A study of cutting force and preheating-temperature prediction for laser-assisted milling of Inconel 718 and AISI 1045 steel
Dong-Hyeon Kim,Choon-Man Lee +1 more
TL;DR: In this article, the cutting force and preheating temperature of Inconel 718 and AISI 1045 steel are predicted using a high power diode laser and regression analysis.
Journal ArticleDOI
Cutting performance of nano-crystalline diamond (NCD) coating in micro-milling of Ti6Al4V alloy
TL;DR: In this article, the performance of nano-crystalline diamond (NCD) coated tools was evaluated by comparing it with TiN-coated, AlCrNcoated and uncoated carbide tools in micro-milling of Ti 6 Al 4 V alloy.
References
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Journal ArticleDOI
Recent Advances in Mechanical Micromachining
TL;DR: In this article, the main drivers, developments and future requirements in the field of micromanufacturing as related to the machining process from the perspective of the recent research and development literature are reviewed.
Journal ArticleDOI
Investigation of micro-cutting operations
TL;DR: A survey of the current efforts in mechanical micro-machining research and applications, especially for micromilling operations, can be found in this paper, where the authors suggest areas from macro-milling that should be examined and researched for application to the improvement of micro-mechanical cutting processes.
Journal ArticleDOI
The Mechanics of Machining at the Microscale: Assessment of the Current State of the Science
TL;DR: In this article, the authors provide a comprehensive review of the literature that is enhancing our understanding of the mechanics of the rapidly growing field of micromachining and discuss both experimental and modeling studies.
Journal ArticleDOI
Modelling and analysis of micro scale milling considering size effect, micro cutter edge radius and minimum chip thickness
TL;DR: In this article, a modified Johnson-Cook constitutive equation is formulated to model the material strengthening behaviors at micron level using strain gradient plasticity, and an analytical micro scale milling force model is developed based on the FE simulations using the cutting principles and the slip-line theory.
Journal ArticleDOI
Laser-assisted machining of Inconel 718 with an economic analysis
TL;DR: In this article, an existing transient, three-dimensional heat transfer model is modified for modeling LAM of Inconel 718, and suitable coating conditions are determined for increasing the laser absorptivity in metals.