Why Robotic Arms Are Now Being Integrated with CNC Machines

Modern CNC machine tending involves multiple operations that were previously performed manually. However, with the integration of robotic arms, manufacturers can now automate tasks such as loading raw blanks, transferring parts between machines, inspecting finished parts, and routing them downstream. The trend towards automation is driven in part by a looming labor shortage.

A Deloitte study found that up to 1.9 million of the 3.8 million manufacturing positions that need to be filled by 2033 could go unfilled due to skills gaps. Robotic machine tending offers a solution to this problem, enabling manufacturers to produce more with less human intervention. A single robotic arm can now manage part orientation, in-process inspection, deburring, and inter-machine transfer within the same automated cell.

This capability removes entire labor-dependent process segments from the production chain. CNC machines, which are major capital investments, can now operate consistently at their designed capability, without the variability of manual loading. Several industry leaders are at the forefront of robotic CNC integration.

FANUC designs robotic arms to work with its own ROBODRILL vertical machining centers. A case study from APT Manufacturing Solutions documented a 33% efficiency gain on a FANUC-tended ROBODRILL line. Universal Robots built its cobot lineup to work alongside people without safety caging, and Toolcraft deployed the UR5e cobot on a three-operation CNC task for a medical device component.

Other companies, such as KUKA, ABB, and RoboDK, are also making significant contributions to the field. KUKA's KUKA.CNC software allows robots to be programmed in G-code, while ABB's FlexLoader M is a pre-engineered, modular tending cell that can be installed in just one to two days. RoboDK provides a manufacturer-agnostic platform that supports over 1,200 robots from more than 50 manufacturers.

As the infrastructure being built today by these companies becomes more widespread, the question remains how much further the role of the robot will expand as artificial intelligence matures. With the ability to monitor spindle load, detect tool wear in real-time, and make autonomous decisions, robots could become even more integral to the manufacturing process.