Packaging steel strip edge and edge blade design

Packaging steel strip edge and edge blade design packaging steel strip edge must have enough strength, stiffness, stability and wear resistance, therefore, the blade material to have better hardenability. Also, there is a certain toughness to withstand the impact load. Packaging steel strip blade material and its hardness value after the heat treatment can be used, see table 4 3. The thickness of the steel belt packaging decisions made cutting parts of material type, thickness and the service life of blade. Under the general qian conditions, packaging steel strip thickness should be slightly larger than the thickness of the blanking parts, the minimum thickness shall not be less than 1. Cold 5 meters. Because the packaging steel strip die has with the characteristics of different thickness of sheet metal and automatically adjust the clearance, as a result, the initial convex and concave die clearance may refer to table 4 - 4 column data. Stamping and packing of steel belt, top pieces, both inside and outside the geometric relationships between a template - see table 4 5. Packaging steel strip overhang of 4 & ndash; 1, take two 5 of the packaging steel strip height 8 ( The wrapped steel with the fixed part of three 5 of its height) 。 Considering the packing of steel belt grinding ( Every time about grinding 0. 2 - 0. 3 mm) After the blade assembly die, can generally be higher than the pallet 0. 5 - 1 mm. Packaging steel strip edge geometry have cutter blade, Angle of blade and three kinds of bevel edge, etc. Cutter blade shape, should use slant sharp edge, as shown in figure 4 1. Which figure ( a) For thin material packaging steel strip punching die, stamping depends on the type of concave die, so the packaging steel strip die blade cant outward. Figure ( b） Handle with punching die for punching, punching depends on the size of the punch, so the punch packaging steel strip blade slant inward. When cutting non-ferrous metals, take the best bevel edge & alpha; =45° 。