Liebherr invests in automated deburring line

Automated deburring line Future-proof production of cranes

2024-08-13 Source: Press Release | Translated by AI 2 min Reading Time

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Liebherr has invested in an automated deburring line. The plant assists in the production of high-quality tower and mobile construction cranes.

Lots of high tech: The robot independently places the parts to be processed, so that the work processes are completely automated.(Image: Liebherr) — Lots of high tech: The robot independently places the parts to be processed, so that the work processes are completely automated.
(Image: Liebherr)

The plant was created in a collaboration between Arku Maschinenbau, Rösler Oberflächentechnik and Teqram. This automates the edge rounding of plasma, autogenously and laser-cut sheets at Liebherr. Thus, the Liebherr plant in Biberach is making the production of tower cranes future-proof.

Removing slag, descaling, deburring, and rounding off edges—all these steps are taken care of by the new system. This allows the sheets, which weigh up to 200 kilograms, to be optimally prepared for further production steps. The parts are used to create, among other things, components for crane booms and tower sections. Robots equipped with the latest camera technology place the sheets, which are up to 1250 millimeters wide and up to 100 millimeters thick, and remove them after processing.

From manual processing to automation

"So far, the work of edge rounding was done by hand," says Robert Piesche, Manufacturing Technology Engineer at Liebherr-Werk Biberach GmbH. This activity, despite high safety precautions, always posed a certain risk of accident when using angle grinders. "With automation, we relieve employees of a monotonous and physically demanding job. Also, they are exposed to less dirt and noise, and we have significantly increased occupational safety." In addition, the new deburring line makes a significant contribution to the production of high-quality tower cranes and mobile construction cranes.

The robot systems with various grippers come from the Dutch expert Teqram. Equipped with intelligent cameras, the "Easy Bots" can independently recognize parts in their work area, regardless of their position on the palette. This eliminates the otherwise usual, time-consuming teaching or programming of the robot. For parts that are too thick for the line, the robots offer the possibility to process them automatically with hand tools. The robots can access various tools such as chisels and angle grinders and perfect the parts with their advanced camera and sensor technology.

Line production meets quality standards

The Bavarian company Rösler supplied the wire belt blast system for descaling, paint stripping, rust removal, roughening, and cleaning the sheets. The result is a comprehensive, reproducible blasting quality on all sides. The machine for deburring and edge rounding, known as the "Edge Breaker 9000 Line", was manufactured by Arku, based in Baden-Baden. This allows for efficient slag removal, deburring, and rounding of the sheets in one pass. Unlike conventional, one-sided machines, which require sheets to pass through multiple times, this system saves 50 percent time and increases productivity.

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Date: 08.12.2025

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