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Stamping, Punching metal parts

- Aug 20, 2018 -

1. Characteristics of stamping processing


(1) In the production process, automatic mechanical equipment and multi-engineering automatic feeding device are applied, so the production efficiency is high. (2) In the stamping process, the scrap is less than other processing, and the scrap can also be made into other small parts, and the material utilization rate is high. (3) Under the simple stamping of the press, parts with complex shapes, high strength and low weight can be obtained. (4) The production volume is large and the manufacturing cost of parts is low. (5) Shorten working hours, save labor and easy to operate. (6) The products manufactured by the same mold have the same size and shape and have good interchangeability.


Stamping process


2. Types of punching: 1 plastically deform the material, including bending, drawing, forming and compression. 2 The material is sheared and separated, including punching and shearing.


3. Cutting and separating the material: It means that the punching and shearing mold adds external force above the breaking strength to the material, and the closed or open contour separates a part of the material from the other part. This processing can complete the cutting and cutting. Punching, punching, breaking, trimming and trimming work. (1) Shearing: The material and the blank are punched and separated according to the open contour. (2) Unloading: The material and the blank are punched and separated according to the closed contour. (3) Punching: Punching is the opposite of cutting. It is the process of punching and separating the material in the part with a closed contour, and the punched piece is usually scrapped. (4) Punch: Punch the open groove at the end of the material. (5) Breaking: Cut a flat, curved or hollow blank into two parts or parts. (6) Whole edge: Remove the uneven or excess outer edges of the extracted or compressed parts. (7) Trimming: Trimming processing uses the reworking shearing method of the punching machine to cut the machining amount reserved for the irregular surface or the outer edge to obtain an accurate size and a smooth vertical shear section.


    To get the exact size and smooth vertical cut section.


    4. Plastic deformation of the material (1) Bending: Generally, part or all of the flat material is punched into an angular shape without changing the thickness of the material. This kind of processing can complete the work of general bending, curling, twisting and the like. General bending: The flat blank is punched into a curved piece, such as a V-shaped bend and a U-shaped bend. Crimping: The edge of the flat material is bent in a smooth circle with a certain radius. Distortion: A portion of a flat blank is twisted at an angle relative to another portion to make a curved piece. (2) Draw processing: change the material of the flat plate into any container with a seamless bottom, or make a further change to the larger diameter bottomed container to reduce the diameter and increase the depth. This type of processing can perform general drawing, stretch forming and shrinking. General drawing: The flat material is stretched and placed on the mold to make a curved hollow piece. Retraction: Re-draw a bottomed, seamless container and vary its thickness. (3) Forming: Various local deformation methods are used to change the shape of the blank or part, such as round edge, bulging, hole flange, curling, necking, seaming, etc. Round edge: A narrow portion of the surface of a flat plate or machined surface is pressed into a concave-convex shape for reinforcement or decoration. Bulging: A forming method in which a cylindrical portion or a part of a tube is expanded in diameter. Hole Flange: The edge of the punched hole or the outer edge of the hollow member is stretched using a material to form a flange. Crimping: Rolling the edge of a hollow piece or tube into a semicircular circle. Necking: A shape in which the diameter of one end of a cylindrical shape or a tube is reduced to increase the length. Seam: A process in which two plates or parts are joined together by multiple bends.



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