In-process dimensional inspection during CNC machining

The client therefore decided to integrate quality control directly into the machining process in order to monitor all stages of the part’s machining. Specifically, Eoptis was asked to develop a solution to perform a preliminary 3D scan of the surfaces of the components, generating highly accurate measurements, so that the machine could perform its tasks, such as drilling and milling, with high precision, according to the required specifications. The client also asked for measurements to be taken during machining for in‑process control, and additional measurements at the end to verify and document that each feature had been successfully completed before moving on to the next feature.

To meet the client’s stringent metrological accuracy requirements, Eoptis developed a 3D scanner based on laser profile sensing capable of performing highly accurate measurements in a very short time, without slowing down the normal machining cycle.

There were also mechanical and electronic challenges. The client asked Eoptis to mount the scanner on the machine head near the machining tool. A quick and reliable attachment/detachment mechanism was required, and space was extremely limited. The working environment is hostile due to the presence of dust, chips, and coolant splashes. This required specific measures to avoid any impact on the scanner’s optical performance. In addition, the scanner had to be completely wireless, both for communication and power, supplied by an integrated battery.

The Eoptis solution was appreciated by the client because it improves process efficiency and enhances machine performance. To develop the solution, Eoptis drew on its interdisciplinary expertise across optics, mechanics, software, and electronics.