A digital readout (DRO) system in CNC machining is a precision measurement tool used to display the real-time position of machine tool components such as axes, slides, or spindles. It enhances the accuracy and efficiency of machining operations by providing accurate and easily readable measurements. The system typically consists of electronic sensors, scales (encoders), a display unit, and associated software.
The sensors are installed on the moving parts of the machine and interact with precision scales, which are linear encoders that convert physical displacement into electrical signals. These signals are then processed by the DRO's internal electronics and displayed on the unit's screen. The display presents the measured values in various formats, including linear dimensions, angular measurements, and incremental or absolute coordinates.
Operators can set reference points, establish workpiece coordinates, and monitor tool movement with high precision, enabling them to make precise adjustments and control machining operations more effectively. Digital readout systems improve accuracy, reduce setup times, and enhance the repeatability of machining processes, contributing to overall productivity and quality in CNC machining.