Feedback strategy for closed-loop inspection based on STEP-NC

Apresentado no XXII World Congress of the International Measurement Confederation (IMEKO 2018.The dimensional inspection is currently consolidated as an important tool in the improvement of manufacturing processes. The demands of quality and the requirement of parts with complex speci cations propose new challenges, such as the incorporation of integration and interoperability concepts in measurement operations. An important issue still unresolved in the inspection process is the dynamic management of information that requires solutions that are at the technological forefront and contextualized within the requirements of Industry 4.0. In this perspective, the implementation of a closed-loop inspection supports the measurement requirements for di erent manufacturing processes and enables the application for di erent purposes. The feedback strategy proposed in this article proposes an alternative as a solution to integrate the inspection results of a part within a digital manufacturing chain based on STEP-NC (STandard for the Exchange of Product model data - Numerical Control). The mechanisms for acquisition, processing, and analysis of information, and the control architecture that complement the feedback strategy is exposed

STEP-NC architectures for industrial robotic machining : review, implementation and validation

In the manufacturing sector, industrial robots are being increasingly improved to execute machining tasks as they exhibit significant advantages in terms of flexibility, cost-effectiveness, affordability, and larger work-space when compared to traditional computer numeric control (CNC) machines. However, programming this kind of equipment for robotic machining is complex, due to closed architecture controller and proprietary programming languages limitations. For that reason, this work aims at contributing to the adoption of the STEP-NC standard (STandard for the Exchange of Product model data- Numerical Control (ISO 10303-238 and ISO 14649)), generating programs for robotic machining operations. The STEP-NC data model enables the integration of information from design, process planning, simulation, manufacturing, and even inspection in a single platform, which could create new alternatives for industrial robotic machining programming. In this context, several previous studies are described in this manuscript aiming to highlight the contribution of this work, in addition to the analysis, implementation, and validation of six different STEP-NC architectures describing the advantages that each architecture provides for achieving robotic machining capabilities. Each introduced architecture can successfully generate a STEP-NC robotic machining program, either as ISO 10303-238 or ISO 14649, which are validated in a simulation environment with both a virtual robot model and a real industrial robot equipped with a LinuxCNC controller. This approach can be implemented in different industrial robots