Laser-assisted Machining

Laser Assisted Machining (LAM) is a new and innovative way to machining hard-to-wear materials, which are difficult to machine using conventional cutting methods. Laser assisted machining combines laser technology with traditional machining methods. Laser assisted turning is hybrid process which combines laser heating and conventional turning. Laser assisted machining could be implemented at the plant giving cost savings. This paper presents the information and the methodology of laser assisted turning. How to cite this article: Radovanovic, M. and Dašić, P.: Laser assisted turning. In: Proceedings of the 6th International Conference "Research and Development in Mechanical Industy" (RaDMI-2006), Budva, Montenegro, 13-17 September 2006. Kraljevo: Faculty of Mechanical Engineering and Trstenik: High Technical Mechanical School, 2006, pp. 312-316. ISBN 978-86-83803-21-7.

The paper presents an update of the recent literature on advances in machining of difficult to machine materials such as nickel and titanium-based alloys, and composites used in aeroengine and aerostructure applications. The review covers the following issues: advances in high-performance cooling techniques as cryogenic machining, minimum quantity lubrication, the combination of MQL and cryogenic cooling, and high-pressure lubricoolant supply and hybrid cutting processes-vibration assisted machining (both low and high frequency), laser, plasma and EDM assisted machining. Examples of applications in industrial processes are also given.

The paper presents an update of the recent literature on advances in machining of difficult to machine materials such as nickel and titanium-based alloys, and composites used in aeroengine and aerostructure applications. The review covers the following issues: advances in high-performance cooling techniques as cryogenic machining, minimum quantity lubrication, the combination of MQL and cryogenic cooling, and high-pressure lubricoolant supply and hybrid cutting processes-vibration assisted machining (both low and high frequency), laser, plasma and EDM assisted machining. Examples of applications in industrial processes are also given.

This article highlights and focuses on laser beam machining (LBM) of aluminum and its alloys. It begins by providing a brief overview of various conventional (chip forming) and nonconventional machining techniques employed for aluminum-based materials. Later, it explicitly provides features of LBM techniques employed for aluminum and its alloys for different types of machining.

Laser Assisted Machining (LAM) is a new and innovative way to machining hard-to-wear materials, which are difficult to machine using conventional cutting methods. Laser assisted machining combines laser technology with traditional machining methods. Laser assisted turning is hybrid process which combines laser heating and conventional turning. Laser assisted machining could be implemented at the plant giving cost savings. This paper presents the information and the methodology of laser assisted turning.

How to cite this article:
Radovanovic, M. and Dašić, P.: Laser assisted turning. In: Proceedings of the 6th International Conference "Research and Development in Mechanical Industy" (RaDMI-2006), Budva, Montenegro, 13-17 September 2006. Kraljevo: Faculty of Mechanical Engineering and Trstenik: High Technical Mechanical School, 2006, pp. 312-316. ISBN 978-86-83803-21-7.

The paper presents an update of the recent literature on advances in machining of difficult to machine materials such as nickel and titanium-based alloys, and composites used in aeroengine and aerostructure applications. The review covers the following issues: advances in high-performance cooling techniques as cryogenic machining, minimum quantity lubrication, the combination of MQL and cryogenic cooling, and high-pressure lubricoolant supply and hybrid cutting processesvibration assisted machining (both low and high frequency), laser, plasma and EDM assisted machining. Examples of applications in industrial processes are also given.

Laser Assisted Machining (LAM) is a new and innovative way to machining hard-to-wear materials, which are difficult to machine using conventional cutting methods. Laser assisted machining combines laser technology with traditional machining methods. Laser assisted turning is hybrid process which combines laser heating and conventional turning. Laser assisted machining could be implemented at the plant giving cost savings. This paper presents the information and the methodology of laser assisted turning. How to cite this article: Radovanovic, M. and Dašić, P.: Laser assisted turning. In: Proceedings of the 6th International Conference "Research and Development in Mechanical Industy" (RaDMI-2006), Budva, Montenegro, 13-17 September 2006. Kraljevo: Faculty of Mechanical Engineering and Trstenik: High Technical Mechanical School, 2006, pp. 312-316. ISBN 978-86-83803-21-7.

Fibre reinforced plastic is a high strength and low weight material and is often used in aerospace industry, or even as our everyday products. The traditional machining of this material is difficult as the tool will continuously encounter alternate matrix and fibre materials, whose response to machining can vary greatly. Because of this, a noncontact material removal process like laser machining offers an attractive alternative. The objective of this study is to assess the quality of cut surface of glass fibre reinforced plastic by single-pass and double-pass laser beam. A first-order orthogonal design has been adopted to conduct experiments where the nozzle diameter, material thickness, and cutting speed were the input laser variables and the roughness of the cut surface and kerf width at the irradiation and exit sides were the output. The results show that the quality of cut surface produced by double-pass beam appeared to be much better than that produced by a single-pass laser beam. The model equations developed indicate that the effects of input variables on the output are different in single-pass beam and double-pass beam. The double-pass beam produced lower kerf width compared to single-pass beam and kerf width was smaller at the exit side. While the single-pass beam produced better surface finish than the double-pass beam. Moreover the effect of nozzle diameter on both the surface roughness and kerf width were found to be significant. The surface finish and kerf width were better when the nozzle diameter was smaller. © 2013 Elsevier Ltd.

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Achievement of sharp bending angles with small fillet radius on stainless steel sheets by mechanical bending requires sophisticated bending device and troublesome operational procedures, which can involve expensive molds, huge presses and large loads. In addition, springback is always difficult to control, thus often leading to final parts with limited precision and accuracy. In contrast, laser-assisted bending of metals is an emerging technology, as it often allows to perform difficult and multifaceted manufacturing tasks with relatively small efforts. In the present work, laser-assisted bending of stainless steel sheets to achieve sharp angles is thus investigated. First, bending trials were performed by combining laser irradiation with an auxiliary bending device triggered by a pneumatic actuator and based on kinematic of deformable quadrilaterals. Second, laser operational parameters, that is, scanning speed, power and number of passes, were varied to identify the most suitable processing settings. Bending angles and fillet radii were measured by coordinate measurement machine. Experimental data were elaborated by combined ANalysis Of Mean (ANOM) and ANalysis Of VAriance (ANOVA). Based on experimental findings, the best strategy to achieve an aircraft prototype from a stainless steel sheet was designed and implemented.

Achievement of sharp bending angles with small fillet radius on stainless steel sheets by mechanical bending requires sophisticated bending device and troublesome operational procedures, which can involve expensive molds, huge presses and large loads. In addition, springback is always difficult to control, thus often leading to final parts with limited precision and accuracy. In contrast, laser-assisted bending of metals is an emerging technology, as it often allows to perform difficult and multifaceted manufacturing tasks with relatively small efforts. In the present work, laser-assisted bending of stainless steel sheets to achieve sharp angles is thus investigated. First, bending trials were performed by combining laser irradiation with an auxiliary bending device triggered by a pneumatic actuator and based on kinematic of deformable quadrilaterals. Second, laser operational parameters, that is, scanning speed, power and number of passes, were varied to identify the most suitable processing settings. Bending angles and fillet radii were measured by coordinate measurement machine. Experimental data were elaborated by combined ANalysis Of Mean (ANOM) and ANalysis Of VAriance (ANOVA). Based on experimental findings, the best strategy to achieve an aircraft prototype from a stainless steel sheet was designed and implemented.