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Stamping forming process
The publisher:admin Release time:2015-4-15 9:36:39 Reading:61Time

    the bending of sheet metal plastic forming method, pipe and bar is bent into a certain angle, curvature and shape. Bending is one of the main processes are widely used in the production of stamping parts. The essence of the bending of metal material is a plastic deformation process, after unloading, the workpiece will produce the direction of the elastic recovery, said the rebound. The rebound effect the precision of the workpiece, is the key technology of bending process must be considered. 

    also known as drawing drawing drawing or rolling, stamping processing method using the mold plateblanking blank to get into the hollow part of the opening. Thin wall parts using drawing process can be madeof cylindrical, conical, spherical, ladder shaped, box and other irregular shape. If combined with otherstamping forming process, can produce very complex shape parts. In the stamping production, drawing a great variety of things. Because of the different characteristics of the deformation zone geometry, position,deformation,  deformation properties of the distribution and the blank parts of the stress state anddistribution rule is considerable, even is the essence of the difference. So the process number and sequence determination of the process parameters, design principle and method and mold are not the same. According to the characteristics of all kinds of drawing deformation can be divided into straight wallrevolving body (cylinder), the straight wall of non rotating (box body), surface revolving body (surface shapeand surface of non rotational parts) four types.

    stretch forming is through the stretch forming die for sheet tension, so that the sheet of non-uniformtensile stress and tensile strain, along with the sheet stretch forming die surface is gradually expanding, andstretching model surface completely fit. The applicable object of stretch forming is the main material isplastic, large surface area, curvature change and slow and smooth, high quality requirements (shape,smooth lines, accurate stable quality of the double skin). Stretching the craft equipment and the equipmentis simple, low cost, high flexibility; but the material utilization rate and low productivity.

    spinning is a rotary metal machining process. In the process, material with the spinning mold activerotation or spinning head spinning around the blank and model active rotation, spinning head relative to the core mould and billet feed motion, and the blank continuous local deformation and obtain the requiredhollow rotary parts. 

Plastic is two times of dressing product appearance make use of fixed abrasive shape. Is mainly reflected in the plane, elastic foot etc.. For some materials there are elastic, can not guarantee the quality of moldingprocessing, again by.

    is the use of mold bulging of sheet drawing to get part of the processing methods of local surface areaincreased thinning. The ups and downs of forming, cylindrical (or tubular) bulging and plate blank blanktension forming etc.. Bulging can adopt different methods to realize, such as die bulging, rubber bulging andhydraulic bulging.

     flange along the curve or straight line will be blank material curved edges or blank prefabricated holeedge narrow region of the folded plastic processing method of vertical edges. Mainly used for edge flangingparts hardening, removal of cutting edge and on the parts made with other parts assembly, connecting partswith complex shape or specific, reasonable space stereo components, and improve part stiffness. In thelarge sheet metal forming, but also can be used to control the fracture or wrinkle method. So it is widely usedin automobile, aviation, aerospace, electronics and home appliances and other industrial sectors.

    necking is a kind of good has been stretched without flange or pipe opening hollow parts stamping method end diameter narrowing. Necking, workpiece end diameter changes should not be too large,otherwise the end of the materials will be due to compression deformation and severe wrinkling. Therefore,the larger diameter shrinkage of small diameter neck, often require multiple necking.

 
 

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