Concept

Machining

Related publications (100)

Tool Path Generation and Post-Processor Issues in Five-Axis High Speed Machining of Hydro Turbine Blades

This paper deals with 5-axis milling of hydraulic blades. The issue developed is essentially linked to problems due to the transition from 3 to 5 axes. A specific attention is done to the Inverse Kinematics Transformation (IKT) which can be source of incoh ...

2006

Caratheodory bounds for integer cones

Friedrich Eisenbrand, Gennady Shmonin

We provide analogues of Caratheodory's theorem for integer cones and apply our bounds to integer programming and to the cutting stock problem. In particular, we provide an NP certificate for the latter, whose existence has not been known so far. © 2005 Els ...

2006

Spark assisted chemical engraving (SACE) in microfactory

Hannes Bleuler, Rolf Wüthrich

Spark assisted chemical engraving (SACE) is a method for 3D microstructuring of glass or other non-conductive materials with high aspect ratio and smooth surface quality. It is applicable for rapid prototyping of microfluidic devices, for MEMS interfacing ...

2005

Extension d'algorithmes d'ordre zéro pour l'optimisation stochastique

Pierre Huguenin

The electrical discharge machining process (EDM) was discovered in the 1950s, and was then used essentially to destroy unrecoverable damaged screws. Since then, huge progress has been achieved in making this process reliable and able to perform the most co ...

EPFL2005

Theoretical Design of a High-Speed Low Power Radial Turbocompressor

Daniel Favrat, Jürg Alexander Schiffmann

High-speed bearings and electrical motors are gradually getting available. This is of particular interest for the application of thermal turbomachinery. The availability of high speed bearing and motor components opens the way to new applications for low p ...

2005

Procédé de moulage à grande capacité

Martyn Douglas Wakeman, Pascal Vuilliomenet, Nicolas Weibel

In a moulding process, in particular in a bladder inflation moulding (BIM process) a thin walled mould is machined to the exact shape of the part to avoid any post machining of the part after stripping. The heating is performed in a liquid tin bath, used t ...

2004

Dynamic Optimization of First-Order Systems via Static Parametric Programming: Application to Electrical Discharge Machining

Roland Longchamp

In this paper, it is shown that dynamic optimization problems of first-order systems can be transformed into a static paramertic programming problem, where the state plays the role of the parameter. Thus, an optimal feedback law is obtained. This concept i ...

2004

Calibration of the 5-dof parallel kinematics HITA-STT

Reymond Clavel

The parallel kinematics machine tool HITA-STT (Stiffness Tracking Technology) developed by Willemin–Machines S.A. and EPFL is now able to machine. This machine can reach accelerations of 5g. It is characterized by a tilt of ± 60° around the B-axis. This ch ...

2004

Interferometer coordinate measurement system for use in measurement and machining tools has partially reflecting boundary surfaces within its measurement head with a separation shorter than the coherence length

Theo Lasser

The invention relates to an interferometer system (41), especially for use in a co-ordinate measuring system. Said interferometer system comprises, disposed in an illumination beam path, a pair of spaced-apart boundary surfaces (52, 53). A boundary surface ...

2004

Optical emission spectroscopy of electrical discharge machining plasma

Christoph Hollenstein, Antoine Descoeudres

Plasma created during electrical discharge machining is systematically investigated using optical emission spectroscopy. Typical spectra show a strong H-alpha and continuum radiation, with many lines emitted by impurities coming from electrode and workpiec ...

2004

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