The quick consuming of products and the strong competition between producers caused to increase the complexity of products, so the digital factory became a need between design and producing actually to achieve a production system with a shorter time and optimal design and parameters without engineering modifications. This research offering a reference model basing on a complete framework between the engineering applications to build a computational model with a single core based on the integration between three dimensions modeling and automation of application for digital factory concept, to optimize the design of achieving the ideal execution of actual production system. Where we achieved the control of three-dimensional computer model according to process automation exactly as in actual through integrating tools, where the percentage of exact between the real factory and digital factory was 83% by using the time of process as the main factor for comparison in this evaluation.