Mold Deep Drawing Molds Stamping Mold High-quality Precision Stamping
Deep Drawing Deep drawing is a metal forming process in which sheet metal is stretched into the desired part shape. A tool pushes downward on the sheet metal, forcing it into a die cavity in the shape of the desired part. The tensile forces applied to the sheet cause it to plastically deform into a cup-shaped part. Deep drawn parts are characterized by a depth equal to more than half of the diameter of the part. These parts can have a variety of cross sections with straight, tapered, or even curved walls, but cylindrical or rectangular parts are most common. Deep drawing is most effective with ductile metals, such as aluminum, brass, copper, and mild steel. Examples of parts formed with deep drawing include automotive bodies and fuel tanks, cans, cups, kitchen sinks, and pots and pans. The deep drawing process requires a blank, blank holder, punch, and die. The blank is a piece of sheet metal, typically a disc or rectangle, which is pre-cut from stock material and will be formed into the part. The blank is clamped down by the blank holder over the die, which has a cavity in the external shape of the part. A tool called a punch moves downward into the blank and draws, or stretches, the material into the die cavity. The movement of the punch is usually hydraulically powered to apply enough force to the blank. Both the die and punch experience wear from the forces applied to the sheet metal and are therefore made from tool steel or carbon steel. The process of drawing the part sometimes occurs in a series of operations, called draw reductions. In each step, a punch forces the part into a different die, stretching the part to a greater depth each time. After a part is completely drawn, the punch and blank holder can be raised and the part removed from the die. The portion of the sheet metal that was clamped under the blank holder may form a flange around the part that can be trimmed off.
Moulds for deep drawing and curvingMoulds for deep drawing and curving are used using cold-technologies obtain an item with concave or conic form. Moulds are composed of punches and matrices that bend the part, stretched and compressed sheet metal, leaving the thickness unchanged. Deep drawing processing is used to make deeper deformation of particularly ductile. Curvature is used, to determine less deep deformations. Moulds for blankingPunching moulds are used to cold cut and deform every type of sheet metal: in aluminium, iron, stainless steel, copper, brass, or titanium. Thanks to careful planning, punching moulds determine, with millesimal tolerance, the pre-established shape and characteristics of the item. Blanking consist of cutting the sheet metal between two profiled cutters, punch and matrix, generating a fracture that reproduces the form of the cutters themselves. Our moulds are developed to ensure that a product fully meets expectations in terms of precision and resistance.
Moulds for bendingMoulds for bending are used to campaigns over 10,000 pieces. When dealing with batches of many items, it is recommended to perform this processing with a mould and not with a forming press, so that it will be faster and more convenient. Only bending moulds also makes it possible to manufacture more than one bend on the sheet metal in the same process and to manufacture an undercut bend with the addition of carriages on the mould.
With a progressive mould you can perform more than one process on a single piece of sheet metal. We plan and build progressive moulds that perform, for example, blanking and deep drawing and bending. Our moulds, even the more complex ones such as the progressives, maintain their characteristics for thousands of production cycles, thanks to the careful work of our technical office. Progressive moulds for blanking and deep drawing A type of mould that makes it possible to combine the blanking operation with the mechanical process of deep drawing. These moulds are used, in particular, to make parts for the automotive and electromechanical sector. Progressive moulds for blanking and bending Progressive moulds for blanking and bending, also called blank and bend moulds, performs both these processes in a single mould. They are often used to make items for the automotive and lighting sector. The drawing processing of the sheet metal consist of plastic deformation operations of the duly dimensioned developments plans to obtain three-dimensional and axially symmetric shapes, such as: - Hemispherical caps - frustums - cylinder - forms of greater complexity, such as straight prisms, or those with polyhedral sections Subsequent bending and shearing operations technical precision items to be efficiently made. In many cases the pieces obtained by drawing the sheet metal replace pieces obtained through processing by chip removal. Our experience in this type of machine allows you to achieve a correct drawing process of sheet metal with increased diameter-height ratio of the deep drawn object. Our moulded objects are developed for projects for: - Creation of deep drawn bushings - cylindrical magnetic circuits for proportional solenoid valves - bearing holder seat - wearing rings for pumps - nozzles for gas valves - deep drawn flanges for gas taps