Hardware drawing parts, do you know all these drawing processes? 【Hardware】

What are the characteristics of metal drawing parts in some commonly used drawing processes such as tapered and rectangular? What are the precautions? Xiaoshuo sorted out a few points, and we will understand with you: 1. Tapered drawing processing: deep tapered parts with h/d>0.8 and αu003d10°～30°. Due to the large depth, the deformation of the blank is large. Only relying on the local area of u200bu200bthe blank in contact with the punch to transfer the forming force can easily cause the blank to become excessively thin or rupture locally, requiring multiple transitions to gradually form. The step stretching method is to first stretch the blank into a stepped transition piece, whose stepped shape is tangent to the inner shape of the tapered part, and then expands into a cone. The stretching times and processes of the stepped transition piece are the same as those of the stepped cylindrical piece. 2. Rectangular re-drawing processing: The deformation of the high rectangular part formed by multiple stretching is not only different from that of the deep cylindrical part, but also very different from the deformation of the low box-shaped part. When the multi-station automatic conveying press is used to process high rectangular box parts, the shape and size of the part will change with the height of the stretch during the multiple stretching process. 3. Curved surface forming processing: curved surface drawing and forming, so that the outer flange part of the metal flat blank is reduced, and the inner flange part is elongated, which becomes a stamping method for hollow products with non-straight walls and non-flat bottom curved surfaces. 4. Rectangular stretch processing low rectangular parts formed by one stretch. When stretching, the tensile resistance at the rounded corners of the flange deformation zone is greater than the tensile resistance at the straight edges, and the degree of deformation at the rounded corners is greater than that at the straight edges. 5. Mountain-shaped drawing processing: When the side wall of the stamping part is inclined, the side wall is suspended during the stamping process and is not attached to the mold. The mold is not attached until the end of the forming. The deformation characteristics of different parts of the side wall are not completely the same during forming. Hardware, 15 years of ingenuity focused on hardware drawing parts, 20,000+ sets of mold customization production experience, monthly 100+ sets of mold processing capacity, daily production capacity of 3 million punching times, stamping accuracy up to 0.01mm, and 16 quality inspections strictly. It can quickly solve time-critical problems for you, solve stamping accuracy problems, and solve production quality problems. Choose, choose to rest assured!