GEOMETRIC MODELLING: – Design involves the development of the shape and dimensions of a component. During designing several factors are to be considered simultaneously. Some of them are stress requirements, the method of manufacture. Geometric modeling is the first step in CAD. A geometric model is created on the screen using different techniques in Mechanical industrial training in Chandigarh. Once creating this model can be easily altered in geometry and configuration to yield a satisfactory shape. The next step is deciding on the exact dimensions. The results of geometric modeling will further be used by CAM in the preparation of NC tapes for the component.
ENGINEERING ANALYSIS: – The most important function of CAD is engineering analysis. Engineering analysis basically involves deciding the exact dimensions of the component. In Mechanical industrial training in Chandigarh, These values have to be arrived at by analyzing the component in terms of the loads it has to withstand in function. CAD provides a sophisticated method like the finite element technique. The unsatisfactory design may require several iterations of the whole process. The computer scores over the human in its capabilities of rapid information retrieval, numerical processing and repeating a process without fatigue.
SIMULATION: – Simulation, in the CAD/CAM context, means duplicating on the video screen a replica of the actual physical situation the designed component is likely to be in. for instance, an airplane will be subjected to wind loads. In the conventional method, the aeroplane will be tested in a wind tunnel using a prototype. This is an expensive and inflexible process, expensive because of the physical construction of the wind tunnel and the prototype, inflexible because it may not be possible to test various sizes and shape under a set of the test condition. Computer simulation gets rid of both these limitations. It involves the testing of a graphic model whose size and shape can be varied at will. Computer simulation does not completely do away with prototype testing. A near perfect shape can be determined using simulation, which can later be tested with a prototype under test conditions. Mechanical industrial training in Chandigarh provides council regarding these areas.
DRAFTING: – The logical step would be to produce a drawing of the component. A drawing is dispensable for the production of the component. Not only the components designed by engineering analysis but also complex layouts, assemblies can be created interactively and plotted in about one-tenth of the normal time. Automated drafting has resulted in enormous productivity gains in terms of time, labor and expenses.