Eight common processes in Shenzhen CNC punching machine processing
by：QY Precision 2020-03-21
Shenzhen, a very prosperous area, large, medium and small business owners have settled here.
There are also many hardware processing manufacturers in Shenzhen. The reason why they can stabilize depends mainly on their own processing technology.
Today we are going to talk about the eight common processes of Shenzhen CNC punching machine processing, as follows: 1.
Shrinkage is a stamping method that reduces the diameter of the opening end of the stretched flange-free hollow piece or tube blank.
The end diameter of the workpiece before and after shrinkage should not change too much, otherwise the end material will wrinkle due to severe compression deformation.
Therefore, it is often necessary to shrink the neck from a larger diameter to a small diameter. 2.
Flanging is a plastic processing method in which the material in the narrow band area of the prefabricated hole edge on the sheet blank or the blank is bent into a vertical edge along a curve or a straight line.
The flanging is mainly used for the edge reinforcement of the part, removing the edges and making the parts assembled and connected with other parts or three-dimensional parts with complex specific shapes and reasonable space, at the same time increase the stiffness of the parts. 3.
Expansion is a processing method that uses a mold to stretch and thin the sheet and increase the local surface area to obtain parts.
Commonly used are ups and downs, expansion of cylindrical blanks and sheet forming of flat blanks.
Expansion can be achieved by different methods, such as rigid mold, rubber and hydraulic pressure. 4.
Plastic surgery is to use the established shape of the abrasive tool to perform secondary trimming of the shape of the product. Mainly reflected in the pressing plane, elastic feet, etc.
For some materials that have elasticity and cannot guarantee the quality of one-time molding, the re-processing is adopted. 5. Rotary pressure is a metal rotary processing technology.
During the processing, the blank rotates actively with the rotary die or the rotary head rotates actively around the blank and the rotary die, and the rotary head moves relative to the core die and the blank, the blank is continuously partially deformed to obtain the required hollow rotary body parts. 6.
The drawing is to exert a pulling force on the sheet metal by the drawing die, so that the sheet metal produces uneven drawing stress and tensile strain, and then the bonding surface between the sheet metal and the drawing die gradually expands, until it fits completely with the drawn model surface.
The application object of pull shape is mainly the double curvature skin with certain plasticity, large surface area, gentle and smooth curvature change and high quality requirements.
Pull shape because the process equipment and equipment used are relatively simple, but the material utilization rate and productivity are low. 7.
Drawing and drawing, also known as drawing or calendering, is a stamping method for hollow parts that make the flat blank obtained after punching into an opening by using a mold.
Thin-walled parts of cylindrical, trapezoidal, conical, spherical, box-shaped and other irregular shapes can be made by drawing process.
If matched with other stamping processes, parts with extremely complex shapes can also be manufactured.
Due to the different geometric characteristics, the position of the deformation area, the nature of the deformation, the distribution of the deformation, and the stress state and distribution of the various parts of the blank have considerable or even essential differences. 8.
Bending a plastic forming method for bending metal plates, pipe fittings and profiles into a certain angle, curvature and shape.
Bending is one of the main processes widely used in stamping parts production.
The bending of the metal material is essentially a elastic-plastic deformation process. After unloading, the workpiece will produce elastic recovery deformation in the direction, called rebound.
Rebound affects the accuracy of the workpiece and is a technical key that must be considered in the bending process.
The above are the eight common processes of Shenzhen CNC punching machine processing. Shenzhen fuchengxi technology can produce various types of stamping parts through reasonable arrangement process, and can call to place orders if necessary.