What are the characteristics and uses of sheet metal stamping parts
With the development of society, stamping products have been applied to all walks of life; stamping products have a variety of materials, a wide range of uses, large to cars, ships, small to electronic parts, there are stamping parts of the figure, today is about sheet metal stamping parts, what are its characteristics and applications?
Sheet metal stamping parts generally refer to the plasticity of metal for a certain thickness of the sheet metal through shearing, stamping forming, bending, and other processes to produce a single stamping part and then through welding and riveting assembly components; Its characteristic is the thickness of the same part is the same.
Because sheet metal stamping has lightweight, has high strength and conductivity, low cost, and large-scale production performance is a good wait for a characteristic currently in the petroleum chemical industry, metallurgy, electronic appliances, communications, automotive industry, medical equipment, and other fields has been widely used, for example in computer chassis, mobile phones and other consumer products, sheet metal processing technology is indispensable. With the application of sheet metal more and more widely, the design of sheet metal stamping parts has become an important part of product development. Mechanical engineers must master the design skills of sheet metal stamping parts so that the designed sheet metal parts can not only meet the requirements of product function and appearance but also meet the requirements of convenient production and processing, cost, and other requirements;
In the design process of sheet metal stamping parts, in addition to the need to use engineering drawings to express the shape and size of parts, but also need to use sheet metal diagrams to express sheet metal parts in production and processing before the sheet metal profile shape and size, used to guide sheet metal stamping parts production, layout, and production. Drawing the flattened shape contour is the expansion and lofting of sheet metal parts according to the three-dimensional shape requirements of parts. Mastering the correct and effective method of sheet metal parts expansion and lofting can ensure the precision of sheet metal stamping parts and improve processing efficiency and save costs.
Sheet metal product design process requirements
Manufacturability: the degree of difficulty of the product in various processing processes, such as punching and bending
Process requirements: the design of sheet metal products should meet the process.
The basic processing methods are: punching, bending, stretching, forming, and so on.
Problems needing attention in sheet metal stamping parts design and improvement methods
1.Avoid external and internal sharp corners
Safety factors: Sharp external corners of the sheet metal may easily cause operators or users to scratch their fingers.
Stamping die factors: the sharp Angle of sheet metal corresponds to the sharp Angle on the die, and the sharp Angle of the die concave die is difficult to process. At the same time, it is easy to crack during heat treatment, and the sharp Angle is easy to collapse and fast wears when punching, resulting in the reduction of the life of the die.
2.avoid too long cantilever and slot
3.The size of sheet metal punching
4.Sheet metal punching spacing and hole edge spacing
The corresponding punch on the stamping die has a small size, low strength, and short die life.
Too long a cantilever may also cause the waste of sheet metal materials.
5.avoid the hole being too close to the sheet metal bending edge or forming characteristics
6.Avoid too small blanking clearance or even material interference after sheet metal expansion
Precautions for bending sheet metal stamping parts
The internal R Angle of sheet metal stamping parts during bending is better than/equal to 1/2 material thickness. If R Angle is not made, then after many times of stamping, the right Angle will gradually disappear and naturally form R Angle; It’s going to be slightly longer;
When sheet metal stamping parts are processed and bent, the bending height is better than 3mm. Otherwise, the size will be unstable because the clamping size is too small;
Sheet metal stamping parts are easy to deform after bending; to avoid this situation, can increase the right amount of 45 degree Angle reinforcement ribs in the bending place to not interfere with other parts as the principle so that the strength coefficient increases;
General sheet metal stamping parts in bending, due to extrusion on both sides of the Angle, will have metal protruding, resulting in width than the original size; the protruding size and the use of material thickness, the thicker the protruding point is larger. Before bending, a semicircle can be made on both sides of the line, and the diameter is more than 1.5 times the thickness of the material; To avoid this phenomenon;
What is the difference between sheet metal parts and stamping parts? Does the process flow?
The technological process is as follows:
Sheet metal parts are mainly bent with thin plates, the machine used is mainly a bending machine, the parts are also relatively large, and the process is generally: cutting plate (blanking) – bending – welding.
The machine used for stamping parts is a punch, and the precision of the parts is high. Generally, a punching die is used to ensure that the punching die is used. Process: cutting plate (blanking) – punching – deburring.
The difference between sheet metal parts and stamping parts is as follows:
Sheet metal is handplant or small batch production. To be exact, it is proofing, and then the quantity is relatively small. If the mold is opened, the cost of the mold can not be earned back. Stamping is mass production and precision requirements of things; the output is relatively large, that is, to be sure to open the die on the stamping.
Sheet metal parts are metal sheet parts manually struck by workers with simple equipment such as hammers. Characterized by low efficiency, parts quality through manual control, not stable, but low cost, for small batch production, or trial production stage.
The stamping part is the sheet metal parts made by stamping die and press. Characterized by high efficiency, parts quality controlled by the mold, and strong stability, but high cost for mass production.
The stamping part is a forming processing method that depends on the press and dies to exert an external force on the plate, strip, pipe, and profile to produce a plastic deformation or separation and to obtain the desired shape and size of the workpiece. Stamping and forging belong to plastic machining, collectively known as forging. The blank for stamping is mainly hot, and cold rolled steel sheets and strips.
Sheet metal is a comprehensive cold processing technology for sheet metal, including cutting, punching/cutting/composite, folding, welding, riveting, splicing, forming, and so on. Its remarkable feature is the same part thickness. The products processed by the sheet metal process are called sheet metal parts. Different industries refer to different sheet metal parts which are used for assembling.
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