What are the steps and basic processes of automobile sheet metal processing?

2020-11-24 11:17:41

The basic process of sheet metal processing is divided into: blanking, bending, stretching, forming and welding. Among the five basic processes, each process should pay attention to the strict requirements of the process, and the slightest carelessness will affect the quality of sheet metal processing products.

1、 Cutting. The cutting processing methods include general punching, numerical punching, shearing cutting, laser cutting and wind cutting. Among them, digital punching and laser cutting are the main cutting methods of sheet metal processing.

2、 Bend. There are many factors to be considered in bending, such as the small bending radius of the bending part, the straight edge height of the bending part, the hole edge distance on the bending part, the process incision of local bending, the bending edge with beveled edge should avoid the deformation area, the design requirements of dead edge, the process positioning hole added in the design, and the process property and springback of bending parts should be considered when marking the relevant dimensions of bending parts.

3、 Stretch. When drawing, the data should be calculated, including the requirements of fillet radius between the bottom of the drawing part and the straight wall, the fillet radius between the flange and the wall of the drawing part, the inner cavity diameter of the circular drawing part, the fillet radius between the adjacent arms of the rectangular drawing part, the relationship between the height and the diameter during the one-time forming of the round non flange drawing part, the dimension standard and matters needing attention on the drawing of the drawing And so on.

4、 Molding. Sheet metal processing products after forming, but also some processing of the product. There are stiffener structure, convex space and limit size of convex edge distance, making louver, processing internal control flanging.

5、 Welding. This is the next process of automobile sheet metal parts processing process, and the welding method and technology should be paid attention to. Welding methods mainly include arc welding, electroslag welding, gas welding, plasma arc welding, melting welding, pressure welding and brazing. Arc welding and gas welding are the main methods of sheet metal processing.

The four important steps of sheet metal processing are cutting, punching / cutting, folding and welding.

Sheet metal is sometimes used as sheet metal. This word comes from the English plate metal. It is generally used to make some metal sheet metal produce plastic deformation by hand or die stamping to form the desired shape and size, and further through welding or a small amount of mechanical processing to form more complex parts, such as chimney, iron furnace, and car shell commonly used in the family are sheet metal parts.

Sheet metal processing is called sheet metal processing. For example, the production of chimneys, iron drums, oil tanks, ventilation pipes, elbows, Tianyuan place, funnel shape, etc. the main processes of automobile stamping parts are cutting, bending, bending, forming, welding, riveting, etc., which requires certain geometric knowledge.

Sheet metal parts are sheet metal parts, which can be processed by stamping, bending, stretching and other means. A general definition is the parts with constant thickness in the process of processing. The corresponding parts are casting parts, forging parts and machining parts. For example, the iron shell outside the car is sheet metal parts, and some kitchen furniture made of stainless steel is also sheet metal parts.

In the current 3D software, sheet metal parts are included in SolidWorks, UG, Pro / E, SolidEdge, topsolid, etc. the data needed for sheet metal processing (such as unfolded drawing, bending line, etc.) can be obtained by editing 3D graphics, and CNC punching machine / laser, plasma, and waterjet cutting machine are used Machine / combination machine and CNC bending machine provide data.