Sheet metal parts processing process

Sheet metal parts processing process and attention to problems for any sheet metal parts, it has a * processing process, that is, the so-called process flow. 1. Design and draw the part drawing of its sheet metal parts, whose function is to express the structure of its sheet metal parts in the way of drawing. 2. Draw the expansion diagram, that is, unfold a part with complex structure into a flat piece. 3. There are many ways of blanking and blanking, mainly including the following ways: a. If there is punching, cutting Angle, and then turn the punching machine combined with the die punching, cutting Angle forming. B. Punch blanking USES the punch to punch the flat part structure after the parts are expanded into shape by one or more steps on the plate. Its advantage is to consume short working hours, high efficiency, can reduce processing costs, often used in mass production. C. NC blanking NC blanking the first thing to write CNC machining program. Is the use of programming software, the drawing of the expansion diagram into the NC NC machining machine tool can be recognized program. Let it follow these procedures step by step on a piece of iron plate, the structure of its flat parts out of shape. D. Laser blanking USES laser cutting method to cut out the structure shape of the flat part of an iron plate. 4 flanging tapping flanging is also called tapping hole, which is to draw a larger hole on a smaller base hole and tap on the tapping hole. This increases the strength and prevents sliding teeth. Generally used for sheet metal processing with relatively thin plate thickness. When the plate thickness is large, such as 2.0, 2.5 and above the plate thickness. 5 punch processing generally punch processing has punching Angle, punching blanking, punching convex bag, punching tearing, hole extraction and other processing methods, in order to achieve the purpose of processing. Its processing needs to have the corresponding mold to complete the operation. Punch convex hull mold, punch tear have tear forming die. Pressure riveting pressure riveting is often used in the riveting screw column, pressure riveting nuts, pressure riveting screws, etc., the pressure riveting mode is generally through the punch or hydraulic riveting machine to complete the operation, riveting to the sheet metal parts. 7. Bending bending is to fold 2D flat pieces into 3D parts. Its processing requires the folding bed and the corresponding bending die to complete the operation. It also has a * bending order, the principle is that the next knife does not interfere with the first fold, will produce interference after the fold. 8. Welding welding is the welding of multiple parts together to achieve the purpose of processing or single parts edge seam welding, in order to increase its strength. Its processing side has CO2 gas protection welding, argon arc welding, spot welding, robot welding and so on. The selection of these welding methods is based on the actual requirements and material. 9. Surface treatment the surface treatment generally includes phosphating skin film, electroplating colorful zinc, chromate, baking paint, oxidation and so on. Phosphide film is generally used in cold rolled plate and electrolytic plate class, its role is mainly in the material surface coated with a layer of protective film, prevent oxidation; Another is to enhance the adhesion of its baking paint. Assembly the so-called assembly is to put multiple parts or components together in a * way, so that it becomes a complete material. One of the things to pay attention to is the protection of the material, not scratch. Assembly is a material after the completion of the step, if the material parts can not be used because of scratch and collision, need to rework and redo, will waste a lot of processing time, increase the cost of the material, so we should pay special attention to the protection of the material parts