What are the points to note in the drawing part dimensions?
(1) a lot of time due to our tensile strength of the various parts of the different sizes, so we have the thickness of the material after the stretch will be more or less some changes. In general, the center of the bottom of our stretched piece will remain the original thickness, the bottom of the fillet at the material thinning, and the top of the material near the flange thickening, rectangular drawing around the rounded corners of the material is thickening . (2) when we re-design of tensile products, the size of the product map should be clearly marked internal dimensions and external dimensions, not both internal and external dimensions. (3) tensile part size tolerance is how to mark it? In general, the inner radius of the convex and concave arcs of our stretched pieces and the dimensional tolerances of the primary cylindrical members are known as bilateral symmetrical deviations of 16 international precision (GB) tolerances 1/2 of the absolute value. And marked with a clear