Do not dimension from the inside of the part to the outside of the part. Dimensions should be consistent to the inside or outside surfaces. Radial dimensions should always be to the inside bend radius. Dimensions should be given between surfaces controlling the relationship of mating parts. Dimensions should be given between surfaces having a functional relation to each other. The manner in which tolerances are called out on the drawing and the areas of the part that are dimensioned can cause a perfectly good part to be scrapped, or worse, a bad part to be accepted. It is important to adhere to specific sheet metal terminology and notation. The best sheet metal part design is only effective if the part can be manufactured efficiently. The most important part of a design is to effectively communicate your design intent to manufacturing and quality control personnel. Generative Sheet Metal Design - General Information Features positioned relative to bends should have a location tolerance of +. For larger features, add an additional 1T for each inch in length. Keep features up to 1 inch (long or diameter) 1.5T plus bend radius away from bends. Keep features with rectangular profiles 1.5T to 3T away from other edges. Keep features with curved profiles 1T to 1.5T away from other edges. The larger the feature periphery, the farther you should stay away from other edges. The closer a feature comes to a bend, the more distortion occurs in the feature as the part is bent into shape. There should also be a clearance distance established for features relative to bends. The general rule for minimum distances between features or edges is the larger the feature the greater the distance.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |