Production technology of mechanical processing of stamping technology!
in the manufacture of mechanical processing actually, apply similarity of stamping process and stamping die test rig, such as deep drawing properties test rig, bulging performance test rig test data such as stamping performance, to ensure the quality of semi-finished products and high qualified rate.
stamping by press and die of sheet, strip, PVC pipe and aluminum release force, work hardening or separately, and then get to appearance and specifications of the steel ( Stamping die) The molding finishing method. Stamping and forging belong to plastic deformation processing ( Or pressure processing) , called the forging press. Stamping of sheet metal is mainly hot rolled and cold rolled steel sheet just plate and nylon belt.
stamping parts compared with castings, forgings, has the characteristics of thin, uniform, light and strong. Stamping can make the other way is difficult to manufacture with reinforcing rib, rib, ups and downs, or pressure tank steel, to improve its stiffness. Because of using precision hardware, workpiece precision achieve millimeter level, and high precision, uniform repeatedly, can produce stamping hole nest, convex sets, etc.
cold stamping generally no longer by precision machining, or only need a small amount of cutting production and processing. Hot stamping precision and surface state is lower than the cold stamping die, but it is still better than that of castings, forgings, less cutting volume.
stamping is efficient production methods, selection of compound die, especially is more progressive die clamp machine, it can be finished in a pressure on multichannel stamping process, by the pick-up uncoiling, leveling, cutting to the extrusion, the adjuster fully automated assembly line production. High production efficiency, good labor standards, the production cost is low, general can produce hundreds of pieces per minute.
according to the process category, can be divided into separation process and forming process two kinds. Separation process is also called the blanking, and its purpose is to make the stamping parts along the centerline from the sheets, directly to ensure the quality requirement of the separation section. Forming process is designed to make the sheet without broken slab under the condition of brittle fracture, the appearance and specifications of the workpiece. In practice production, often is a variety of process comprehensive applied to a workpiece. Cutting, bending, shear, deep drawing, bulging, spinning, is a variety of stamping process.
die casting with the nature of the surface of the sheet metal and great impact on the stamping quality of raw materials, precision stamping material thickness, symmetry; The surface is bright and clean, no spots, no scar, no cut, no surface crack, etc; The yield limit is uniformly distributed, without obvious directivity; Even high tensile strength; Showed low; Cold work hardening property is low.
stamping equipment except outside the plate with a hydraulic press molding, usually choose mechanical press. In modern high-speed transfer mechanical press as the center, the configuration uncoiling, leveling, manufactured goods acquisition, transmission machinery, various types of tooling libraries and quick die change equipment, and use the software program control, automatic stamping production line may constitute a high productivity.
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