Suche nach „[Christian] [Vogt]“ hat 51 Publikationen gefunden

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Beitrag (Sammelband oder Tagungsband)

Igor Makarenko, Christian Vogt, Rolf Rascher, Peter Sperber, Thomas Stirner

ELID supported grinding of thin sapphire wafers

Proceedings of SPIE: 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, Volume 7655

2010

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenMaschinenbau und Mechatronik

Vortrag

Florian Schneider, Christian Vogt, Roland Maurer

Vibration errors caused by tactile measurements

1st International Euspen Challenge, Jena

2010

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Vortrag

Florian Schneider, Christian Vogt, Roland Maurer, Rolf Rascher, Peter Sperber

Effects of mechanical inaccuracies on the measurement result in metrology systems

SPIE Conference, Dalian, China

2010

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Vortrag

Christian Vogt, R. Stamp, G. Smith, Rolf Rascher, Peter Sperber, Florian Schneider, Roland Maurer, Markus Schinhärl

Strategies for grinding optical free-forms using ball-shaped grinding wheels

SPIE Optifab, Rochester, NY, USA

2009

Abstract anzeigen

The demand for non-spherical surfaces and free-forms is steadily growing. Aspherical lenses can reduce the number of necessary lenses in optical systems e.g. used for lithographic devices for production of microprocessors. Parabolic mirrors can be used to focus light beams highly efficiently because of low absorption rates without colour distortion. Combined optical devices with included mechanical functions for assembly reduce necessary production steps. The most common pre-machining method for small numbers of high-precision lenses and mirrors is grinding. Depending on the required shape there are different options for generating surfaces e. g. spheres, parabolic mirrors or combined forms. The most flexible ones are grinding with (i) workpiece and ball-shaped tool rotating and (ii) fixed workpiece with ball-shaped tool rotating. In this manuscript grinding strategies dealing with meander and spiral tool paths are investigated in order to define which strategy works best for machining off-axis parabolic mirrors.

Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

Vortrag

Rolf Rascher, Christian Vogt

Strategies for grinding optical free forms using ball shaped grinding wheels

Optifab 2009: Conference TD06, Rochester, NY, USA

2009

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Vortrag

Christian Schopf, K. Fathima, Andreas Geiss, Markus Schinhärl, Christian Vogt, Rolf Rascher, Peter Sperber

Ultraschallunterstütztes Schleifen von Linsen

Siebtes Symposium - Zukunft Glas - von der Tradition zum High-Tech-Produkt, Zwiesel

2008

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Vortrag

K. Fathima, Christian Schopf, Andreas Geiss, Markus Schinhärl, Christian Vogt, Rolf Rascher, Peter Sperber

Precision finishing of aspherical optical components using ELID grinding

Siebtes Symposium - Zukunft Glas - von der Tradition zum High-Tech-Produkt, Zwiesel

2008

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Beitrag (Sammelband oder Tagungsband)

Christian Schopf, K. Fathima, Andreas Geiss, Markus Schinhärl, Christian Vogt, Rolf Rascher, Peter Sperber

Ultraschallunterstütztes Schleifen von Linsen

Siebtes Symposium - Zukunft Glas - von der Tradition zum High-Tech-Produkt

2008

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Beitrag (Sammelband oder Tagungsband)

K. Fathima, Christian Schopf, Andreas Geiss, Markus Schinhärl, Christian Vogt, Rolf Rascher, Peter Sperber

Precision finishing of aspherical optical components using ELID grinding

Siebtes Symposium - Zukunft Glas - von der Tradition zum High-Tech-Produkt

2008

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Beitrag (Sammelband oder Tagungsband)

Markus Schinhärl, Christian Vogt, Andreas Geiss, R. Stamp, Peter Sperber, L. Smith, G. Smith, Rolf Rascher

Forces acting between polishing tool and workpiece surface in magnetorheological finishing

Proceedings of SPIE, Volume 7060, Current Developments in Lens Design and Optical Engineering IX (Optical Engineering + Applications, San Diego, CA, USA; August 10-14, 2008)

2008

DOI: 10.1117/12.794196

Abstract anzeigen

Magnetorheological finishing is a computer-controlled polishing technique that is used mainly in the field of high-quality optical lens production. The process is based on the use of a magnetorheological polishing fluid that is able, in a reversible manner, to change its viscosity from a liquid state to a solid state under the control of a magnetic field. This outstanding characteristic facilitates rapid control (in milliseconds) of the yield stress, and thus the pressure applied to the workpiece surface to be polished. A three-axis dynamometer was used to measure the forces acting between the magnetorheological fluid and the workpiece surface during determination of the material removal characteristic of the polishing tool (influence function). The results of a testing series using a QED Q22-X MRF polishing machine with a 50 mm wheel assembly show that the normal forces range from about 2 to 20 N. Knowledge of the forces is essential, especially when thin workpieces are to be polished and distortion becomes significant. This paper discusses, and gives examples of, the variation in the parameters experienced during a programme of experiments, and provides examples of the value of this work.

Angewandte Naturwissenschaften und WirtschaftsingenieurwesenHochschulleitung und -einrichtungenMaschinenbau und Mechatronik

Beitrag (Sammelband oder Tagungsband)

Andreas Geiss, Markus Schinhärl, Rolf Rascher, Peter Sperber, J. Slabeycius, K. Fathima, Christian Vogt

Magnetorheological Finishing of silicon nitride moulds

Proceedings of the 10th Anniversary International Conference of the European Society of Precision Engineering and Nanotechnology, Zürich, Schweiz, Volume 2

2008