Process flow of precision sheet metal processingFirst: design and draw the part drawing of its sheet metal part, also known as three views, whose function is to express the structure of its sheet metal part in the way of drawing. Second, draw the unfolding drawing, that is, unfold a complex structure part into a flat part. Third: there are many ways to cut Fourth: flanging tapping, also known as tapping, is to draw a slightly larger hole on a smaller base hole, and then tap on the tapping hole. This will increase the strength and avoid tooth slippage. The fifth: punch processing, general punch processing has punching cutting angle, punching blanking, punching convex, punching tear, hole extraction and other processing methods, in order to achieve the purpose of processing. Sixth: press riveting, press riveting as far as our factory is concerned, there are often used press riveting studs, press riveting nuts, press riveting screws, etc. its press riveting method is generally completed by punch or hydraulic press riveter, and it is riveted to sheet metal parts. Seventh: bending, bending is to convert 2D flat parts into 3D parts. Its processing needs a folding machine and a corresponding bending die to complete the operation. It also has a certain bending sequence, and its principle is to fold the next knife first without interference, and then fold the interference. Eighth: welding, welding is to weld multiple parts together, to achieve the purpose of processing or single part edge seam welding, in order to increase its strength. Ninth: surface treatment, surface treatment generally have phosphating coating, electroplating colorful zinc, chromate, baking paint, oxidation, etc. |