Quality control robots at PWFT GmbH

In this application, the sharpness of various knives is tested after the production and sharpening process. Using a piece of paper to be cut, any differences in sharpness are determined by applying constant pressure to the blade. It is important that the robot runs smoothly and evenly.

Due to the different shapes and cutting edges of knives, the robot must run predefined motion sequences so that a 90° angle to the paper is maintained even with curved blades. This is the only way to ensure a comparable test (and therefore consistent product quality) between different knives.

The robolink® RL-DP with 4 axes in combination with a holding device for the knives was the ideal approach here.
Thanks to its 4 axes, the articulated arm robot is able to feed different knife shapes to the same test station and enable consistent measurement.