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What factors affect the quality of automotive stamping parts

by:Fortuna     2021-03-06
Automobile stamping parts are a kind of stamping parts with very many applications. Generally speaking, automobile stamping parts need to be produced in strict accordance with IATF16949, and the precision requirements are also very high. Automobile stamping parts manufacturers will encounter many problems in the production of stamping parts. How to ensure the quality of stamping parts? What factors will affect the quality of automotive stamping parts? Precision will be analyzed from the following perspectives: 1. The mold structure has a great influence. The forming effect of deep drawing parts has a great relationship with the radius of the mold, the working space of the mold, the geometric shape and the guiding method of the mold. 2. In the stamping die, the radius of the convex and concave die plays an important role in the drawing part. When the radius of the punch is too small, the bending deformation of the straight wall and the bottom of the blank increases, and the dangerous section strength decreases. The tensile stress on the side wall of the blank increases accordingly. Both of these conditions will increase the tensile coefficient and the deformation resistance of the sheet, resulting in an increase in the total tensile force and a decrease in the life of the die; 3. If the radius of the punch or die is too large, the deformation resistance of the stamping Small and metal has good fluidity, but it will reduce the effective area of u200bu200bthe blank and make the parts prone to wrinkles. Therefore, when determining the radius of the punch and die, it is necessary to consider the deformation characteristics of the workpiece and the drawbead. 4. The working parts of different shapes of molds will also affect the quality of deep-drawn parts. There are two types of concave molds: flat molds and cone molds. The use of tapered molds generally makes the deformation zone of the blank more resistant to instability, thereby allowing a relative thickness (t/D) relative to the flat-end mold. Smaller blanks will not wrinkle. 5. The guiding of the drawing die includes two directions: the punch and the blank support, and the blank support and the blank support. The rationality of the mold guide rail directly affects the reliability of the drawings. Reasonable and stable guide rails can ensure the uniformity of the die circumferential gap and the matching of the drawing surface, thereby ensuring the quality of the stretched parts. [Related recommendation] Learn more: The drawing characteristics of cylindrical deep drawing parts Learn more: Analysis of the causes of wrinkles on the surface of the drawn parts Learn more: Introduction to the characteristics of stamping parts
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