Job details

Robotic UDT-entering

Flanders Make

Flanders Make is the strategic research centre for the manufacturing industry. Our mission is to strengthen the long-term international competitiveness of the Flemish manufacturing industry. That’s why we work together with SMEs and large companies on pre-competitive, industry-driven technological research, resulting in concrete product and production innovation in the vehicle industry, the manufacturing industry, and production environments.

Goal of the internship

Part positioning and centration on ultraprecision machines is limited in accuracy due to mechanical tolerance stacks governing the final position of parts to about ±2μm on ultraflat vacuum chucks. This variation is however not acceptable in optical surface fabrication given the peak-to-valley surface error values which should generally remain below 100 nm. The final adjustment of parts on ultraprecision machines is often a manual process of gauging and applying an impulse on the part e.g. with a hammer. This process is time-consuming, final accuracy and speed is operator dependent, part roundness on the gauged surface is difficult to interprete towards high centration accuracies and stick-slip friction on the vacuum chuck often leads to multiple iteration before satisfying results are reached.

The goal of this internship project is to design and test a centration tool for ultraprecision part positioning on a diamond turning lathe located at the B-PHOT labs in Gooik. The tool should consist of an actuator allowing a precise control on the impulse given on the part for repositioning and should preferably use the already available gauge and machine controls. The latter are available through the Delta Tau PMAC PEWIN32 PRO2 controller and dedicated g-code commands (e.g. M80 for indexed spindle operation) of the Moore Nanotechnology 350FG diamond turning lathe. An adaptive or learning strategy should be researched in order to overcome the unpredictable stick-slip motion of the part during actuation. This stick-slip depends on a number of factors and it is not possible to predict the behavior up front. Validation of the tool can be performed against both a skilled operator, an apprentice operator and should also contain test-cut data on a simple lens profile.

Profile Student

  • Bachelor degree in control engineering;
  • Knowledge of adaptive or learning control design and experience with Matlab/Simulink is highly recommended;
  • Passionate by research and new technologies with focus on applications for machines or mechatronic systems of the companies;
  • Result oriented, responsible and proactive;
  • A good communicator, able to communicate in English;
  • Eager to learn and a team player.

Practical Data

This assignment is an internship but can also be executed by a thesis student from a local university.

The assignment is for min 3 month to maximum 6 months and takes place at the offices of B-Phot in Gooik and at the Flanders Make offices located in Leuven, Belgium.

For internship :

All software and hardware needed for the execution of the project will be provided by B-Phot and Flanders Make.

  • Location: Leuven, Gaston Geenslaan 8, 3001 Leuven


For more information:
at the number: +32 (0)11 790 590
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