The development data of complex bending parts are best calculated by software. It is best to use solidworks in practical operation.
The calculation of bending coefficient is complicated, but in general, it can be calculated manually without being too accurate.
You can use the following methods for calculation:
Fish fillets are very small (r
L=L 1+L2+Kδ, where k is between 0.48 and 0.5, the lower limit is soft material and the upper limit is hard material.
When bending at multiple angles: l = l1+L2+...+ln+k1δ (n-1),
L2 l 1...ln—— the internal line length of each straight side (mm), and n —— the number of straight sides. K1-when bending at two angles, it is between 0.45 and 0.48; It is 0.25 in multi-angle bending (it can be reduced to 0. 125 for materials with greater plasticity).
2. Draw them, find extension lines (according to the center line) and calculate them geometrically.
L= total length-2 * r/tan (α/2)+α/180 * 3.1416 * r.
Where α is 30 degrees or 90 degrees and r is the bending radius.
3. Draw them, find the extension lines (according to the center line) and calculate them geometrically. L= shape length-2 * r/tan (α/2)+α/180 * 3.1416 * r.
Where α is 30 degrees or 90 degrees and r is the bending radius.
Metal sheets are sometimes used to extract gold. The word comes from the English word platemetal, which generally means that some metal plates are plastically deformed by hand or die stamping to form the required shape and size, and can be further welded or machined to form more complicated parts.
Common objects, such as chimneys, tin furnaces, car shells, etc., are all sheet metal parts.