A digital twin is a digital representation of a physical entity that is updated in real-time by transfer of data between physical and digital (virtual) entities. In this manuscript we aim to introduce a digital twin framework for robotic drilling. Initially, a generic reference model is proposed to highlight elements of the digital twin relevant to robotic drilling. Then, a precise reference digital twin architecture model is developed, based on available standards and technologies. Finally, real-time visualisation of drilling process parameters is demonstrated as an initial step towards implementing a digital twin of a robotic drilling process.

The drilling of carbon fibre reinforced polymer composites presents a number of manufacturing challenges which result in automation difficulties. Such problems include excessive tool wear, delamination and uncut fibres. Resulting from this, frequent inspections and regular monitoring are mandatory during drilling process. Component rejections due to delamination is also of concern,