Sheet metal processing is a comprehensive cold working process for sheet metal (usually less than 6mm), including cutting, punching, bending, welding, riveting, mold forming and surface treatment.
Its remarkable feature is the same thickness of the same part.
Sheet metal products are widely used in various industries and fields, such as automobile manufacturing, construction, electronics manufacturing, aerospace, medical equipment and so on.
Common sheet metal materials are cold-rolled steel, galvanized plate, aluminum plate, stainless steel plate and so on.
Sheet metal products have the characteristics of light weight, high strength, corrosion resistance, flat surface and low manufacturing cost, so they are widely used in the manufacture of various products and parts.
1, sheet metal processing method
Non-mold processing:
The process of sheet metal through the number of punching, laser cutting, shearing machine, bending machine, riveting machine and other equipment is generally used for sample production or small batch production, and the cost is high.
Short processing cycle, rapid response.
Mold processing:
Through a fixed mold, the sheet metal processing, generally have blanking die, forming die, mainly used for mass production, low cost.
Early mold cost is high, parts quality is guaranteed.
The pre-processing cycle is long and the mold cost is high.
2, sheet metal processing process
Remove material:
Number of punching, laser cutting, shearing machine
Forming - bending, drawing, punching: bending machine, punching machine, etc
Other processing:
Pressing riveting, tapping teeth, etc
Welding:
Connection mode of sheet metal
Surface treatment:
Powder spraying, electroplating, drawing, screen printing, etc
3, sheet metal processing steps
Material preparation:
Select the appropriate sheet metal material and cut it into the required size and shape according to the design requirements.
Pre-processing treatment:
The surface of the material is treated, such as oil removal, cleaning, grinding, etc., in order to facilitate subsequent processing.
CNC punching machine processing:
Using CNC punching machine, sheet metal materials are cut, punched, slotted, punched and so on according to the design drawings.
Bend:
According to the design requirements, the plane parts processed by the punching machine are bent to form the required three-dimensional shape.
Welding:
Weld the bent parts, if necessary.
Surface treatment:
Surface treatment of finished products, such as painting, electroplating, polishing, etc.
Assemble:
The individual parts are assembled and the final product is formed.
Sheet metal processing usually requires the use of various mechanical equipment and tools, such as CNC punches, bending machines, welding equipment, sanders, etc.
Safe operating procedures must be followed during processing to ensure efficiency and quality.
4, sheet metal bending how to calculate the size?
The sheet metal bending dimension is calculated based on the thickness, bending Angle, and bending length of the sheet metal.
Calculate the sheet metal length.
The sheet metal length is the length of the bending line, that is, the sum of the length of the bending part and the straight line segment.
Calculate the length after bending.
The length after bending should take into account the length of the bending degree.
Calculate the bending length based on the bending Angle and sheet metal thickness.
Calculate the sheet metal development length.
The expansion length is the length of the sheet metal when it is fully developed.
The development length is calculated according to the length of bending line and bending Angle.
Calculate the width after bending.
The width after bending is the sum of the widths of the two parts of the L-shaped part formed after bending the sheet metal.
It should be noted that different sheet metal materials, thickness and bending angles and other factors will affect the size calculation of sheet metal.
Therefore, when calculating sheet metal bending dimensions, you need to calculate them based on specific sheet metal materials and processing requirements.
In addition, for some complex bent parts, CAD software can be used for simulation and calculation to obtain more accurate dimensional calculation results.
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