Design Considerations for Stretch
Drawings on the design drawings Dimensions Note: tensile parts due to the size of the stress varies, so that the thickness of the material after stretching change. In general, the bottom of the central to maintain the original thickness of the material at the bottom of the fillet thinner near the flange at the top of the thickening of the material, rectangular drawing around the rounded corners of the material thickening. Stretch product size standard method: in the design of tensile products, the size of the product map should be clearly stated must ensure that the external size or internal dimensions, not both inside and outside dimensions marked. Dimension Tolerance of the drawing method: the radius of the concave and convex arc of the drawing piece and the height dimension tolerance of the cylindrical drawing piece of the primary forming are two-sided symmetrical deviation, the deviation is GB (GB) Half of the absolute value, and labeled with the + sign.