Increasing the Accuracy of Concrete Surfaces Through Robotic Milling (2025-01)¶

The automation of processes in the construction industry is becoming increasingly important in order to be able to produce precise, material-efficient components and counteract the shortage of skilled workers. One promising area of application is the robot-assisted post-processing of modular or reclaimed reinforced concrete components. For modular prefabricated structures or in terms of the circular economy, dry joints with very high accuracy are required in particular in order to avoid the formation of stress peaks and to comply with the production tolerances in the joining process. The use of robot-assisted machining processes requires precise knowledge of the working accuracy. In this article, the working accuracy for concrete milling with industrial robots for the finishing of concrete components is systematically investigated and influencing factors are identified. Acceleration measurements are used to record the change in the vibration behavior of the tool during the production process. This enables simple and fast quality control of the milled surfaces.