What are some advantages of GD&T over conventional tolerancing?
What will be an ideal response?
There are several advantages of using GD&T instead of conventional tolerancing:
• The system allows the designer to clearly specify design intent. The location of datums allows manufacturing engineers, machinists, and quality control personnel to easily recognize part functionality.
• There is better communication throughout the design process. Manufacturing engineers and machinists are able to make better decisions about how things are made. Quality control personnel are able to make better choices for inspection.
• The system is set up so that almost nothing can be interpreted in more than one way. This is extremely valuable when hiring a subcontractor to manufacture parts. You want to make sure everything works when the parts are assembled.
Just two items are required within this system:
• A datum reference frame to immobilize and orient the part.
• Specific form, orientation, and location tolerances that describe 2-D and 3-D tolerance zones within which all part geometry must fall.
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