The MBD user can browse through the View Captures to review the 3D PMI information as needed.
DrawtoPMI uses the 3D CAD model and associated 2D drawing to automatically combine them into a single 3D model file containing all 3D PMI information, including views, sections, functional tolerances and annotations, ready for immediate use in the MBD environment.ĭrawtoPMI creates Annotation Sets in the MBD model with the 3D PMI data organized into different View Captures, each one equivalent to one of the original 2D drawing sheet views. A requirement exists for an automated solution that can extract the necessary manufacturing information from a 2D drawing and add it to the 3D part : DrawtoPMI, an innovative solution from ITI.ĭrawtoPMI supports the migration of legacy CAD data for use in the MBD environment.
CATIA V5 DEFINITION MANUAL
The effort required is such that one customer was considering the expense of employing a team of contractors specifically to deal with legacy model recreation for their new MBD environment.Īs with any manual remastering process, there is also the serious risk of design deviation and unexpected changes being introduced as a result of human error when interpreting data between the 2D drawing and the 3D model by manually transferring design intent.Ĭlearly a more effective solution is needed to enable companies to migrate their existing CAD models to the MBD environment and maximize data re-use. However, both of these options are expensive, labor intensive and susceptible to human error. The other close option is an engineer's interpretation of the 2D PMIs in the original drawings, extracting the data, and then adding the required 3D PMI entities to the original 3D model. The first option usually considered for data re-use is the manual remastering of legacy parts in the MBD environment with 3D PMI included. However, effective legacy data re-use is essential to accelerate adoption and demonstrate the benefits of this methodology. The re-use of existing data is not usually a priority when customers plan their MBD implementations. But what about your existing CAD model data? You have a significant investment in existing product designs and standard parts that consist of 3D CAD models with linked 2D drawings that you want to be able to re-use in the MBD environment. If you are implementing MBD within your company, then new 3D CAD models will be created with 3D PMI data included from the beginning.
Today, the evolution underway for many engineering enterprises is the implementation of 3D Model Based Design (MBD), using applications such as Catia 3D Master, where all Product Manufacturing Information (PMI) such as functional tolerances, dimensions, and annotations are stored in the 3D model rather than in the linked associative 2D drawings.