(1) Bending: A plastic forming method that bends metal sheets, pipe fittings, and profiles into certain angles, curvatures, and shapes. Bending is one of the main processes widely used in the production of stamping parts.
(2) Deep drawing: Deep drawing, also known as drawing or calendering, is a stamping method that uses a mold to turn the flat blank obtained after stamping into an open hollow part.
(3) Stretching: It is to apply tensile force to the sheet through the drawing die, so that the sheet produces uneven tensile stress and tensile strain, and gradually expands with the surface of the sheet and the drawing die until it meets the surface of the drawing model. Complete fit.
(4) Spinning: It is a metal spinning process. During the processing, the billet is actively rotated with the spinning die or the spinning head is actively rotating around the billet and the spinning die, and the spinning head is fed relative to the mandrel and the billet to cause continuous local deformation of the billet to obtain the required hollow zero. part.
(5) Trimming: It is to use the established mold shape to perform secondary trimming on the shape. Mainly reflected in the pressing plane, spring feet and so on. Reprocessing is used when some materials have elasticity and the quality of one-time molding cannot be guaranteed.
(6) Bulging: It is a processing method that uses a mold to stretch and thin the sheet to increase the local surface area to obtain parts. Commonly used are undulating forming, bulging of cylindrical blanks and stretching forming of flat blanks.
(7) Flanging: It is a plastic processing method that bends the edge of the sheet blank or the narrow band area of the edge of the prefabricated hole on the blank into a vertical edge along a curve or a straight line.
(8) Shrinking: It is a stamping method that reduces the diameter of the open end of the stretched flangeless hollow part or tube blank. The diameter change of the end of the workpiece before and after shrinking should not be too large, otherwise the end material will be warped due to severe compression deformation.
