Because of the unique laser–matter interaction processes involved, femtosecond laser micro-machining and femtosecond laser materials processing techniques are developing rapidly to stages where they may be introduced into manufacturing. Yet in both these areas, some complex interaction phenomena are not fully understood. In this talk we describe two studies of fundamental processes that impact ...

A new scheme to increase the extractable energy from a table-top KrF amplifier up to 100 mJ/pulse is presented. Applications of such pulses for micro-machining and for the generation of powerful XUV radiation are demonstrated. PACS 42.60.Da; 42.65.Ky; 81.40.-z

Robust manufacturing of micro parts at high throughput needs tailored concepts and methods to assure unchanging work piece quality. An actual challenge is the dimensional metrology with meso-to-microscopic high-aspect ratio features of micro-system components, e.g. micro gears for watches and micro motors, ferrules of optical fibers, hollow microneedles for painless drug delivery into living ce...

Micro-manufacturing emerged in the last years as a new engineering area with the potential of increasing peoples’ quality of life through the production of innovative micro-devices to be used, for example, in the biomedical, micro-electronics or telecommunication sectors. The possibility to decrease the energy consumption makes the micro-manufacturing extremely appealing in terms of environment...

In order to service and grow in the present day of global competition, every manufacturing concern focuses mostly on two factors i.e. productivity and quality. Laser drilling is a popular non-traditional machining technique for producing large numbers of cooling holes of various sizes (less than mm diameter) and angles in modern aerotech components such as turbine blades, injector nozzles, and ...

One of the main focuses in many research fields is the miniaturisation of work pieces and components. Micro fluidic, micro mechanic, micro electronic and micro optical functional groups are integrated into smallest space to microsystems for medical, information technology or automotive purposes. Directly opposed to the miniaturisation trend of these products are the machine tools used for the p...

The growing interest in the use of parallel kinematic machines (PKM) in machining applications requires clear determination of the workspace, dexterity and stiffness. This paper deals with the issues regarding the use of PKM as micro machine tools. Comparison criteria are set and a quantitative analysis is made to compare the characteristics of serial and parallel kinematics with respect to the...

Micromilling process is used for fabrication and manufacturing of miniaturized components. Very high spindle rotational speeds are required in micromilling to reduce the chip load and to counter the low flexural rigidity of the micro-tool while machining hard materials. Apart from the high rotational speed (>100,000 rpm) which can excite dynamic instability, the dynamic force variation in micro...

The demand of ultra-precision micro-machine tools is growing day by due to exigent requirements miniaturized components. High accuracy, good dimensional precision and smooth surface finish are the major characteristics these machine tools. High-speed machining has been adopted increase productivity using high-speed spindles. However, tool vibration a issue in machining. Vibration significantly ...