Proposed methodology for auto error correction and detection for closed loop manufacturing using embedded system

The CNC machine tools are used to manufacture precision machined components. Generally the component profile & size to be achieved is programmed using NC Codes. Once the parts are produced, the operator will check whether the desired dimension is achieved or not. There are chances that due to the tool wear (predominantly) and other reasons like material non homogeneity, insufficient coolant supply etc. (less predominantly) the produced parts are out of specified tolerance zone. By chance if the operator miss to check and correct the wear offsets, then there are chances that the few components get rejected during series of production. Dimensional and Geometrical parameters measurement in CNC machine is primarily an open loop system. The checking is done by operator after completion of operation, which is not reliable. This is called OBQ (Operator based quality). The requirement of the industry is to switch from the OBQ to SBQ (System Based Quality). In the proposed work, an end to end solution from auto measurement to analysis using an embedded system and feedback to the CNC machine using communication protocols, thereby making Auto Inspection system for a closed loop manufacturing system will be developed.