How to determine the stamping direction of precision drawing parts

The stamping direction of precision drawing parts is a problem to be determined before drawing processing. It not only determines whether a qualified drawing part can be drawn, but also determines the difficulty of subsequent processing. Therefore, before processing precision drawing parts, you must first confirm the direction of the stamping. Next, the precision author will introduce to you how to confirm the stamping direction of precision drawing parts. To confirm the stamping direction, some basic standards should be considered. First of all, it is necessary to ensure that the punch can enter the die. Secondly, the total area of u200bu200bthe mold base that touches the blank is large. The larger the surface, the smaller the angle of intersection between the surface and the plane, and the less likely it is for the blank to generate partial ground stress load and cause the precision stretched parts to crack. When the material is stretched, the fit to the model is improved, and it is easy to get the shape of the punch, which is beneficial to improve the deformation level of the part. There are also parts where the friction resistance of each part of the pressing surface should be balanced. The uniformity of the drawing depth is the key criterion to ensure the uniformity of the friction resistance of each part of the material pressing surface. The uniformity of the friction resistance of each part of the pressure surface is the key to ensure that the precision stretched parts do not wrinkle or crack. In many cases, because the bearing capacity of each part of the precision stretched part is not the same, the thickness of the stretched material will be more or less changed. Generally speaking, the center of the bottom end of the precision drawing part will maintain the original thickness, the material at the bottom end will become softer, but the material at the top end near the boss will increase, and the material around the arc around the rectangular frame drawing part will also increase. Thick. When designing precision drawing parts, the specifications on the product drawings should be established to indicate the internal specifications and external specifications, and the internal and external specifications may not be marked separately. In general, the standard tolerance of the convex-concave arc-shaped inner half-warp of the precision drawing part and the height-to-width ratio of the cylindrical drawing part formed at one time is called the two-sided symmetry error, and the error value is (GB) 16 precision The degree of dimensional tolerance value is 1/2, and it is clearly marked with ±. [Related recommendation] Learn more: What are the methods for polishing the surface of stainless steel? Learn more: Manufacturing characteristics of automotive stamping parts molds Learn more: Points to note in the design of continuous stamping dies