Author: Bruno Markus JauPublisher:
ISBN:
Category : Laser beam cutting
Languages : en
Pages : 296
Book Description
Laser Assisted Machining of Hard to Machine Materials
Author: Bruno Markus JauPublisher:
ISBN:
Category : Laser beam cutting
Languages : en
Pages : 296
Book Description
Laser Assisted Machining of Hard to Machine
Author: Bruno Markus JauLaser Assisted Mechanical Micromachining of Hard-to-machine Materials
Author: Ramesh K. SinghPublisher:
ISBN:
Category : Lasers
Languages : en
Pages :
Book Description
There is growing demand for micro and meso scale devices with applications in the field of optics, semiconductor and bio-medical fields. In response to this demand, mechanical micro-cutting (e.g. micro-milling) is emerging as a viable alternative to lithography based micromachining techniques. Mechanical micromachining methods are capable of generating three-dimensional free-form surfaces to sub-micron level precision and micron level accuracies in a wide range of materials including common engineering alloys. However, certain factors limit the types of workpiece materials that can be processed using mechanical micromachining methods. For difficult-to-machine materials such as tool and die steels, limited machine-tool system stiffness and low tool flexural strength are major impediments to the use of mechanical micromachining methods.
Laser-Assisted Machining
Author: Sandip KunarPublisher: John Wiley & Sons
ISBN: 1394214634
Category : Technology & Engineering
Languages : en
Pages : 500
Book Description
LASER-ASSISTED MACHINING This unique book develops exhaustive engineering perceptions of different laser-assisted techniques, reviews the engineering context of different laser fabrication techniques, and describes the application of laser-assisted fabrication techniques. Lasers are essential in the area of material processing because they can produce coherent beams with little divergence. The fabrication process known as surface cladding includes joining (soldering, welding), material removal (laser-aided drilling, cutting, etc.), deformation (extrusion, bending), and material addition. Some remarkable advantages of laser-assisted material development include faster processing rates and preservation of essential alloying components. However, the lack of widespread understanding of various material phenomena and how laser parameters affect them prevents the technology from being widely accepted on an industrial scale. Among the subjects Laser-Assisted Machining covers include high-powered lasers in material processing applications, laser-based joining of metallic and non-metallic materials, direct laser cladding, laser surface processing, laser micro and nano processing, emerging laser materials processing techniques, solid-state lasers, laser cutting, drilling and piercing, laser welding, laser bending or forming, laser cleaning, laser automation and in-process sensing, femtosecond laser micromachining, laser-assisted micro-milling/grinding, laser-assisted jet electrochemical micro-machining, laser-assisted water jet micro-machining, hybrid laser-electrochemical micromachining process, quill and nonreciprocal ultrafast laser writing, laser surface engineering, ultrashort pulsed laser surface texturing, laser interference patterning systems, laser interference lithography, laser-guided discharge texturing. Audience The book will be used by researchers in the fields of manufacturing technology and materials science as well as engineers and high-level technicians for a better understanding of various innovative and novel techniques to cope with the need of micromachining, as well as microfabrication industries for successful implementation of microproduct manufacturing.
Laser-Assisted Machining
Author: Sandip KunarPublisher: John Wiley & Sons
ISBN: 1394213573
Category : Technology & Engineering
Languages : en
Pages : 500
Book Description
LASER-ASSISTED MACHINING This unique book develops exhaustive engineering perceptions of different laser-assisted techniques, reviews the engineering context of different laser fabrication techniques, and describes the application of laser-assisted fabrication techniques. Lasers are essential in the area of material processing because they can produce coherent beams with little divergence. The fabrication process known as surface cladding includes joining (soldering, welding), material removal (laser-aided drilling, cutting, etc.), deformation (extrusion, bending), and material addition. Some remarkable advantages of laser-assisted material development include faster processing rates and preservation of essential alloying components. However, the lack of widespread understanding of various material phenomena and how laser parameters affect them prevents the technology from being widely accepted on an industrial scale. Among the subjects Laser-Assisted Machining covers include high-powered lasers in material processing applications, laser-based joining of metallic and non-metallic materials, direct laser cladding, laser surface processing, laser micro and nano processing, emerging laser materials processing techniques, solid-state lasers, laser cutting, drilling and piercing, laser welding, laser bending or forming, laser cleaning, laser automation and in-process sensing, femtosecond laser micromachining, laser-assisted micro-milling/grinding, laser-assisted jet electrochemical micro-machining, laser-assisted water jet micro-machining, hybrid laser-electrochemical micromachining process, quill and nonreciprocal ultrafast laser writing, laser surface engineering, ultrashort pulsed laser surface texturing, laser interference patterning systems, laser interference lithography, laser-guided discharge texturing. Audience The book will be used by researchers in the fields of manufacturing technology and materials science as well as engineers and high-level technicians for a better understanding of various innovative and novel techniques to cope with the need of micromachining, as well as microfabrication industries for successful implementation of microproduct manufacturing.
High-Speed Machining
Author: Kapil GuptaPublisher: Academic Press
ISBN: 0128150211
Category : Technology & Engineering
Languages : en
Pages : 318
Book Description
High-Speed Machining covers every aspect of this important subject, from the basic mechanisms of the technology, right through to possible avenues for future research. This book will help readers choose the best method for their particular task, how to set up their equipment to reduce chatter and wear, and how to use simulation tools to model high-speed machining processes. The different applications of each technology are discussed throughout, as are the latest findings by leading researchers in this field. For any researcher looking to understand this topic, any manufacturer looking to improve performance, or any manager looking to upgrade their plant, this is the most comprehensive and authoritative guide available. Summarizes important R&D from around the world, focusing on emerging topics like intelligent machining Explains the latest best practice for the optimization of high-speed machining processes for greater energy efficiency and machining precision Provides practical advice on the testing and monitoring of HSM machines, drawing on practices from leading companies
Laser Assisted Micro Milling of Hard Materials
Author: Mukund KumarPublisher:
ISBN:
Category : Lasers
Languages : en
Pages :
Book Description
This thesis presents an investigation of novel laser assisted micromachining processes that addresses the limitations of micromachining of hard-to-machine materials. Two different laser assisted approaches are used to machine hard metals and high strength ceramics. For hard metals, the basic approach involves localized thermal softening of the workpiece material by focusing a solid-state continuous wave near infra-red laser beam in front of the micro milling tool (end mills of 0.1 to 0.5 mm diameter). By suitably controlling the laser power, spot size and scan speed, it is possible to produce a sufficiently large reduction in the flow strength of the work material and consequently the cutting forces and tool deflections. A force model is developed to predict the cutting forces in Laser Assisted Micro Milling (LAMM) of hard metals. For high strength ceramics, the approach involves use of a two step process. In the first step, thermal cracks are generated in a confined volume by the steep thermal gradients generated by laser irradiation of the workpiece. In the second step, the weakened region is removed by a micro grinding tool. The characterization and modeling of the process serve as bases for users of the two approaches to select optimal process parameters.
Hybrid Machining
Author: Xichun LuoPublisher: Academic Press
ISBN: 0128131136
Category : Technology & Engineering
Languages : en
Pages : 326
Book Description
Hybrid Machining: Theory, Methods, and Case Studies covers the scientific fundamentals, techniques, applications and real-world descriptions of emerging hybrid machining technology. This field is advancing rapidly in industrial and academic contexts, creating a great need for the fundamental and technical guidance that this book provides. The book includes discussions of basic concepts, process design principles, standard hybrid machining processes, multi-scale modeling approaches, design, on-machine metrology and work handling systems. Readers interested in manufacturing systems, product design or machining technology will find this one-stop guide to hybrid machining the ideal reference. Includes tables of recommended processing parameters for key engineering materials/products for each hybrid machining process Provides case studies covering real industrial applications Explains how to use multiscale modeling for hybrid machining
Machining of Ceramics and Composites
Author: JahanmirPublisher: CRC Press
ISBN: 9780824701789
Category : Technology & Engineering
Languages : en
Pages : 728
Book Description
Presenting modern advances in the machining of ceramics and composites, this work offers broadly based, fundamental information for selecting the appropriate machining processes and parameters, developing successful manufacturing strategies, and designing novel machining systems. It focuses on scientific and engineering developments affecting the present and future of machining processes.
Thermal Study of Laser-assisted Machining of Silicon Nitride
Author: Sepehr OmidiPublisher:
ISBN: 9781339455990
Category : Cutting
Languages : en
Pages : 86
Book Description
Over the last decades Laser Assisted Machining (LAM) of hard materials has grown into a viable solution for the manufacturing industry. Interest in the machining of ceramics has grown due to the possibilities of LAM reducing tool wear and increasing productivity. The concept is based on heating the ceramic material into a soft phase that makes it much easier to machine. The other advantage this technology has over traditional grinding is that is possible to make complex shapes and even machine threads. While there has been research in LAM of ceramics such as Silicon Nitride, Zirconia, Alumina it often lacks comprehensive analysis for a particular laser source. In order for industry to adopt such a technology an optimized approach to providing results on ceramics is required. A few years ago as a result of ongoing research at NIU the commercial technology Easy to Machine Hard Materials (EMHM(TM)) was developed to address this issue. While research of Silicon Nitride, Zirconia, Alumina and Cemented Carbide are ongoing via EMHM the thrust of this research will be to provide a comprehensive approach and reduce the time required to optimize parameters for machining ceramics. The main issue to address for productivity in industry (when machining) is how to minimize tool wear (so tools last longer) while removing as much material as quickly as possible. This will obviously vary based on material and energy available. To experimentally carry all this work out would require a vast amount of resources and time. As such this proposal discusses the development of an easy to use ANSYS simulation program that will enable the user to see the surface temperature (which can translate to tool life) based on the feed rate, depth of cut, laser power and spindle speed. There are complex thermo-mechanical forces at play and so an optimized program is required to improve throughput of the analysis. We will develop the first generation ANSYS simulation which will help us verify experimental work we have done with the materials that have been researched via EMHM(TM).