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The forming process of precision terminal stamping process
Jan 23, 2017

Precision terminal stamping process:

Bending: the metal sheet, pipe fittings and shaped bend at an Angle, curvature and the shape of the plastic molding method. Bending is widely used in the production of precision terminal one of the main process. The bending of metal material is essentially a elastic-plastic deformation process, after unloading, the direction of the precision terminal will produce deformation of elastic recovery, says the springback. Springback affecting the precision of the workpiece, and the key technologies of bending process must be considered.

Deep drawing, deep drawing, also known as drawing or calender, is to use the mould for cutting after flat blank into the opening of the hollow parts stamping processing method. By deep drawing process can be made into cylinder, step, conical, spherical, box and other irregular shape thin-walled parts. If cooperate with other stamping forming process, still can make extremely complex shape parts. In the stamping production, there are many kinds of deep drawing parts. Due to the different geometric characteristics, deformation area location, the nature, the distribution of deformation and stress state and distribution of each part of the billet is very large, and even the nature of the differences. So the determination of process parameters, process and sequence number method and principles of mold design and the method is different. All kinds of deep drawing parts according to the characteristics of deformation mechanics can be divided into straight wall of rotors, straight wall of surface of solid of revolution, of rotors and surface of four types of rotors, etc.

Form is by pulling die exert force on sheet metal, sheet uneven tensile stress and tensile strain of the sheet and then pull shape mold joint surface expands gradually, until with fractal model surface completely fit. Shape of applicable object is mainly manufacturing material has certain plasticity, large surface area, curvature changes gently smooth, high quality requirements, accurate, smooth streamline shape, stable quality) of double curve skin. Pull form due to the process equipment and equipment is simple, so the cost is low, flexibility; But low material utilization ratio and productivity.

Spin is a kind of metal turning process. In the process of machining, the mould of billet with spinning active or spinning rotating round billet and spinning mould rotation, relative mandrel spinning head and feed movement, billet making hollow billet continuous local deformation and to obtain the required solid of revolution parts.

Plastic is the use of established grinding tool shape on the precision terminal quadratic shape of dressing. Mainly reflects in plane, feet, etc. In view of the part of the material is elastic, there is no guarantee that a forming quality, the processing again.

Bulging is the thin use mould to make sheet metal drawing processing method of local surface area increase for parts. Commonly used there are ups and downs forming, cylindrical or tubular blank of bulging and flat blank piece drawing, etc. Bulging can adopt different methods to implement, such as just, rubber of punch bulging and hydraulic bulging, etc.

Flanging is along the curve or straight line or blank sheet billet edge on prefabricated hole edge ribbon material bent into a vertical edge of the plastic processing method. Flanging is mainly used for precision terminal edge enhancement, remove the edges and on parts made with other parts assembly and connection parts or specific with complex shape, reasonable space stereo components, can increase the stiffness of parts at the same time. So precision terminals in automotive, aviation, aerospace, electronics and home appliances and other industrial department has very broad application. 

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