Recent developments in wireless sensors, communication and information network technologies have created a new era of the internet of things (IoT). To achieve the real-time data capturing from shop-floor front lines and the seamless dual-way connectivity and interoperability among enterprise layer, workshop floor layer and machine layer, a framework of the internet of manufacturing things (IoMT) is presented, which provides a new paradigm by extending the IoT to manufacturing field. Under this IoMT framework, the key enabling technologies such as configuration of sensor networks, sensing and capturing of manufacturing data, data processing and applications services etc. are designed and analyzed. The proposed IoMT framework and its key technologies will facilitate the real-time information driven optimum control and the operation efficiency during manufacturing execution process management.