Tool deflection measurement in incremental sheet forming using an optical multi-sensor system

Can an Algorithm See Better Than a Steady Hand?

This question arises when high-resolution cameras and laser light are used to visualize how cooling lubricants (CL) move inside a grinding machine. In this context, Particle Image Velocimetry (PIV) can be used, an optical measurement technique for determining flow velocities. The measurement area is located in the contact zone between the grinding wheel and the workpiece. However, even the smallest vibrations can interfere with image evaluation and distort the measurement results. As part of a DFG research project at BIMAQ, a smart algorithm is therefore to be developed that detects and corrects global image shifts. This will make it possible to capture the flow in the particularly critical contact zone between the grinding wheel and the workpiece much more accurately—an important step toward the further development of modern manufacturing metrology.

Possible Tasks

• Literature review on image stabilization methods
• Development of an image correction algorithm for vibration-induced disturbances
• Experimental validation of the algorithm
• Advanced image analysis for separating the motion of the grinding wheel and the fluid