88 research outputs found
Investigation into minimal-cutting-fluid application in high-speed milling of hardened steel using carbide mills
Applying cutting fluid in a metal-cutting process can reduce the rate of tool wear and improve surface quality. However, cutting fluid has negative effects on the working environment and the use of cutting fluid also increases the total production cost. Therefore, there is a need to reduce the use of cutting fluid during machining. To serve that purpose, a minimal-cutting-fluid technique was studied. In the present work the cutting fluid was applied in a form of a high-velocity, narrow, pulsed jet at a rate of 2 ml/min. The performance of machining with pulsed-jet application was studied in high-speed milling of hardened steel, compared to dry machining and machining with flood application. The results clearly show that compared to dry machining and machining with flood application, machining with pulsed-jet application lowers cutting forces, reduces tool wear, increases tool life, and improves surface roughness, especially when machining with high cutting velocity. Moreover. the amount of cutting fluid consumed at the rate of 2 ml/min is a drastic reduction compared to flood application. Also, no harmful oil mist is generated during the pulsed-jet application. In conclusion, the pulsed-jet application can be applied to milling process of hardened steel using ball end mills; it reduces the negative effects to the environment, improves machining performances, and consequently reduces total production cost. (C) 2008 Elsevier Ltd. All rights reserved
Tool Wear Analysis of Micro End Mills - Uncoated and PVD Coated TiAlN & AlTiN in High Speed Micro Milling of Titanium Alloy - Ti-0.3Mo-0.8Ni
Recent advances in characterization, modeling and control of burr formation in micro-milling
Machining applications
There has been an increasing demand for biomedical devices including various instruments,
apparatuses, implants, in vitro reagents, and similar articles to diagnose, prevent,
or treat diseases, improve human health, prolong human life, and recover from
serious injuries. Biomedical devices that we utilize are not only continuously getting
smaller and more effective but are also designed with more customized functionalities.
In response to that demand, new design innovations, new materials, and prototypes
of novel medical devices have been introduced on a regular basis. Design,
prototyping, and manufacturing techniques for these materials and designs have also
been continuously developing in parallel to the needs in biomedical device demands.
There have been a large number of books written about design and manufacturing
of various products but biomedical device manufacturing remains less covered than
other well-known microelectronics and consumer products.
This book brings authors from institutions around the world, perhaps one of the
few wide-ranging books on manufacturing processes for medical devices with coverage
of various materials including metals and polymers. The book aims to reach
audiences such as practicing engineers who are working in medical device industry,
students in the biomedical device manufacturing courses, and faculty/researcherswho
are conducting research in medical device design, prototyping, and manufacturing
Modelling, Simulation and Experimental validation of Burr size in Drilling of Aluminium 6061 alloy
Finite Element Modeling of a Thin Circular Disc Manufactured by Forming Process used in Cyclic Loading and Unloading Applications
Investigations into Cutting Forces and Surface Roughness in Micro Turning of Titanium Alloy Using Coated Carbide Tool
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