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Michael Benisch, M. Eng.

Zentrum für angewandte Forschung

Institut für Präzisionsbearbeitung und Hochfrequenztechnik - Technologie Campus Teisnach

Wissenschaftlicher Mitarbeiter

Mitglied im Fakultätsrat Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen

T 118

09923/80108-417

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Zeitschriftenartikel

  • Michael Benisch
  • Johannes Liebl
  • Werner Bogner
  • O. Fähnle
  • E. Rädlein

Impact analysis of temperature and humidity effects on polishing

In: EPJ Web of Conferences vol. 255 pg. 03011.

  • (2021)

DOI: 10.1051/epjconf/202125503011

The polishing process for optical glass is one with intertwined chemical and mechanical processes. The aim of the present study is to verify whether control of these factors can be used to improve the efficiency of the polishing process.
  • TC Teisnach Optik
  • NACHHALTIG
  • DIGITAL
Beitrag in Sammelwerk/Tagungsband

  • Stefan Anthuber
  • Michael Benisch
  • Rolf Rascher

Industry 4.0 in the fabrication of optical components: development, presence, and requirements

pg. 118530D.

  • (2021)

DOI: 10.1117/12.2595037

Optics and photonics are considered as an enabling technology for innovations in other technological fields (e. g. astronomy, medicine, military, …). Their first applications date back to jewellery processing in ancient times. In the medieval age Vikings on Gotland (1050) buried the Visby lenses. They have a quality of workmanship and imaging comparable to a high quality lens made in the mid-20th century. The specific use of spectacles to correct long-sightedness or presbyopia is known from the 13th century. Around the transition from the 16th to the 17th century, the microscope and the telescope were invented, combining several lenses for the first time. This shows that the exploitation of the optical properties of materials can be dated back very early in human history. In particularly, today`s optics industry is still based on personal knowledge which results in a relatively workmanship production environment. The challenges of globalisation and the current pandemic situation demonstrate that increasing the degree of automation is a possible way to keep a leading position in the market. This is not only important due to the high quality of optical components but also by enabling competitive prices for production through reducing the labour costs. The third industrial revolution established the digitalisation of production and the usage of CNC-machinery. In most industries including optics industries this is the status quo of production. The target of industry 4.0 and internet of things is to lead into a new industrial revolution. The German government developed the buzzword “Industrie 4.0” (eng. Industry 4.01 ). This concept includes the contradiction of mass production and production according to individual customer requests. This should be carried out by connecting all production units with the goal of an intelligent factory. Among other things this includes seamless monitoring of the manufacturing processes along all steps and remote access to involved machines. A further target is manufacturing under the constraint of a small batch size down to one piece. This publication aims to present the current situation in the manufacturing of optical components and compare this with manufacturing of metallic components. It will outline, which measures are necessary to ensure a comprehensive transformation of the optical industry in accordance with the Industry 4.0 idea and which benefits can be expected.
  • TC Teisnach Optik
  • DIGITAL
Beitrag in Sammelwerk/Tagungsband

  • Olga Kukso
  • Michael Benisch
  • Rolf Rascher
  • S. Sundar
  • M. Hacker
  • M. Duschl
  • M. Nussbaum

Acoustic measurements for optics

pg. 118530K.

  • (2021)
The aim of the research was the development of a measurement and analysis method that enables the detection of errors and malfunctions within a machine tools and in the manufacturing process using acoustic sensors (microphones).
  • TC Teisnach Optik
  • DIGITAL
Beitrag in Sammelwerk/Tagungsband

  • Michael Benisch
  • O. Fähnle
  • Rolf Rascher

Application of a pressure measuring film for pressure observation in overarm polishing

  • (2020)

DOI: 10.1051/epjconf/202023803003

In previous publications the inhomogeneous pressure transfer through the polishing tool onto a glass surface could be shown. This experiment shows polishing trials with different polishing materials and the differences in the homogeneity of the pressure transfer through them. Only the properties of the material will be discussed explicitly, the change of the tool constitution through the process will be part of further publications.
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • NACHHALTIG
Beitrag in Sammelwerk/Tagungsband

  • Michael Benisch
  • Christian Vogt
  • Rolf Rascher
  • O. Fähnle

Octopus: A simple and effective tool for polishing slurry monitoring

San Diego, United States

  • (2020)

DOI: 10.1117/12.2567952

The present paper shows a way for a cost-effective, integrated measurement of the density p of polishing suspensions. It is based on the principle of measuring the turbidity of a solution on the basis of the light transmitted through it, and of calculating back to the density on the basis of the turbidity. The tool is suitable for monitoring polishing agents and for detecting when the density of the polishing slurry leaves the permissible parameter space and can perspectively enable the automated monitoring and adjustment of polishing suspensions. The tool is named after an Octopus. These animals have amazing abilities, for example they can copy the behaviour of other sea animals or act with a plan. Their tentacles each have their own brain and can perform biochemical analyses.
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • NACHHALTIG
Beitrag in Sammelwerk/Tagungsband

  • Michael Benisch
  • O. Fähnle
  • Rolf Rascher
  • Werner Bogner

Force and pressure analysis during overarm polishing

pg. 114780H.

Bellingham, WA, USA

  • (2020)

DOI: 10.1117/12.2564903

The Preston-equation implies, that, besides the relative speed υrel and a specific constant KP, the pressure p plays a significant role for the removal rate when polishing an optical component. This paper demonstrates a possibility for a qualitative evaluation of the pressure distribution before the polishing process. A pressure-sensitive foil is used as a gauge for pressure measurement. The effectiveness of this measuring method is explained. Specific weaknesses and limitations in the use of these foils are discussed. A method for an integrated evaluation of the pressure on different spots of the polishing pad is proposed at the end of the paper.
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • NACHHALTIG
Beitrag in Sammelwerk/Tagungsband

  • Michael Benisch
  • O. Fähnle
  • Rolf Rascher

Observation of pressure distribution between tool and surface in different polishing situations

pg. 1148704.

San Diego, United States

  • (2020)

DOI: 10.1117/12.2567885

Pressure is a relevant parameter in the polishing of components according to the Preston equation.1, 2 Preliminary investigations have shown that the pressure can vary with inclined position and different polishing pads. It is not constant with regard to its distribution in the contact area between polishing pad and glass surface. In this publication, the pressure distribution during the polishing of glass components is analyzed. For the measurement of the pressure distribution a pressure sensitive foil is used.
  • TC Teisnach Optik
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • NACHHALTIG
Vortrag

  • Michael Benisch

Vernetzte Sensorik für das Prozessverständnis in der Glasbearbeitung . Posterpräsentation

In: 6. Tag der Forschung

Technische Hochschule Deggendorf Deggendorf

  • 10.04.2019 (2019)
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • DIGITAL
  • NACHHALTIG
Patentschrift

  • Sebastian Sitzberger
  • Christian J. Trum
  • Michael Benisch

Ultraschall-Handbohrmaschine und Verfahren zum Betreiben einer Ultraschall-Handbohrmaschine

  • 26.09.2019 (2019)
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • NACHHALTIG
Beitrag in Sammelwerk/Tagungsband

  • Michael Benisch
  • Werner Bogner
  • Rolf Rascher

Using A Digital Temperature Sensor To Measure The Temperature Development During A Polishing Process

  • (2019)
  • Angewandte Naturwissenschaften und Wirtschaftsingenieurwesen
  • TC Teisnach Optik
  • NACHHALTIG