Deep drawing stamping parts of the role of drawbead is what?

We understand the purpose of deep drawing stamping parts in life, but when it comes to technology, few people know deep drawing stamping parts of what is the role of drawbead, small author popularity: for everyone today is usually draw bead can increase the resistance of the feed, making it to the surface of the tensile stress, the increase of the stiffness in the deep drawing parts, as well as the distortion to reduce springback and defects; At the same time, it also can adjust the flow of materials, material injection mould for the workpiece everywhere need to prevent 'more wrinkled, less crack' principle; Second, it can enlarge the adjusting range of blank-holder force, in double-action press, adjust outside the four corners of the slider, high and low, only simple adjusting blank-holder force, can't fully control of feed rate, therefore, need to rely on pressure surface and draw bead to control; Drawbead has, of course, at the same time, may reduce the blank holder surface roughness requirements, decrease the difficulty of the deep drawing pieces mould manufacturing increases the lower die clearance, reduce the surface wear, improve the service life of mould can also be a disguised form; Finally, it can also correct material uneven defects, eliminate the possibility of creating slippage, material on the drawbead through ups and downs to die again after injection process, equivalent to the role of the leveling roll pressure. The above article is derived from the metal stamping parts, automotive stamping parts processing customized 18 years, reprint please indicate the source. 【 Relevant recommendation 】 Details: how much do you know the new energy automotive stamping parts? Details: sharing details of stamping processing industry: precision metal stamping parts figure how to draw, please be aware that this several steps