Sub-con CNC machining company invests in data management

Castle Precision Engineering (Glasgow), one of the UK's largest independent CNC (computer numerical control) machining sub contractors, is investing in technology from Absolute Vision to improve the tracking and placement of tools throughout its factory as part of a larger company-wide automation exercise.

Work has begun to program and install DataMouse Pro handheld 2D code readers at every turning centre, AVM-50 fixed readers at each machining centre, and internet protocol (IP) cameras at 46 machines in the building to monitor the machining process. Castle's software team will integrate the vision equipment into the company's automated production control system that includes a biometric login system for machine operators.

Castle has also invested in a high-tech HP20 laser marker from Pryor Marking Technology so that every tool and tool-changer, both new and already in use, can be individually marked on-site with a uniquely identifiable Data Matrix code to enable full traceability.

Automatic tool tracking

Castle's 60 CNCs handle thousands of tools every day, mainly used to make rotational engine parts for the aerospace industry, but also parts for oil, defence and electronics sectors.

Marcus Tiefenbrun, managing director of Castle, explains: "In every machine there are cutting tools that we want to track automatically. In some of the machines there is a magazine into which the tools fit, and the vision system will enable us to optically check the tools as the magazine goes round. On each lathe there is a kit of tools, which will also need tracking."

Richard Laight, business development manager for Absolute Vision, says: "We are delighted to be working with Castle on this implementation. We advised on a mix of different products to meet their specific needs."

At the machining centres, operators identify each tooling package using an AVM-50 code reader before starting to machine, to check that they have the right tool for the job.

Correct orientation

On the turning centres, a DataMouse Pro will identify each tool and check it against a Data Matrix code placed in the correct position in the turret. The machining processes are critically accurate, so it is important that each tool is set in the correct location and orientation in order for the part to be machined accurately.

For additional security an IP digital camera will be used for video surveillance on each machine. Motion detection software monitors the machining process, logging when the spindle is turning and the machine is cutting, and the video data is fed back into the PC for management use, in conjunction with data from the production control system for each operation.

About Castle Precision Engineering (Glasgow) Ltd

Castle is one of the largest independent CNC machining shops in the UK, with a turnover in excess of 10 million. Castle specialises in CNC production machining, progressing volume precision work with efficiency and accuracy. To continually improve its performance, the company invests regularly in new technology, high-quality machinery and tooling, as well as investing in its people to maximise product quality and manufacturing efficiency.