Shanghai sheet metal processing method

   1, cutting:

      The blanking is to cut the material into the desired shape according to the opening. There are many methods for cutting, which can be divided into cutting, punching and laser cutting according to the machine type and working principle.

   1.1 Shear--Cut the cut shape to the desired shape. Accuracy can reach more than 0.2mm, mainly used for cutting strips or trimming materials.

   1.2 Punching and cutting - cutting with CNC bed (NC) or general punch. The accuracy of the two blanking methods can reach more than 0.1mm, but the former will have a knife mark and relatively low power when cutting, the latter has high power, but the single cost is high, suitable for mass production.

   1.3 Laser cutting - the use of laser cutting equipment to continuously cut the sheet, is the desired shape of the material. It is characterized by high precision and can process parts with very messy shapes, but the processing cost is relatively high.

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Shanghai sheet metal processing

1, cutting: there are various methods of cutting, the first few methods

2. Punch: It is the punching and forming of various shapes of the flat parts after the sheet metal parts are opened in one step or more steps by using the punching machine. The advantages are short labor hours, high power, high precision, low cost and suitable for mass production. But design the mold.

4. The laser cutting method is to use the laser cutting method to cut out the structural shape of the flat plate in the large flat plate. The same laser cutting program is required to be the same as the NC blanking. It can be used for various messy shapes of flat pieces, with high cost and precision. 0.1.

      1. Fitter: countersunk, tapping, reaming, drilling

      2. Flanging: Also called punching and turning, it is to draw a slightly larger hole in a smaller base hole, and then tapping. First, use the thin sheet of Shanghai sheet metal processing to add strength and thread. The number of turns, to avoid slippery teeth, generally used for thin plate thickness, the normal shallow shallow flange of the hole circumference, the thickness does not change at all, allowing the thickness to be thinner 30-40%, can be higher than the normal flange height 40-60% of the height, when the thickness is 50%, the maximum flange height can be obtained. When the thickness is large, such as 2.0, 2.5 or more, the thickness can be directly tapped.

       4 . Pressing riveting: For the company, the first place is the rivet nut, the screw, the loose plug, etc. It is finished by hydraulic riveting machine or punching machine, riveting it to the sheet metal part, and riveting Method, you need to pay attention to the direction.

l The number of bending bars is T=3.0mm or less and 6 times the thickness of the board, such as: T=1.0, V=6. 0 F=1.8, T=1.2, V=8, F=2.2, T=1.5, V=10, F=2.7, T=2.0, V=12, F=4.0

l When the aluminum plate is bent, there is a crack, and the lower die groove can be added to add the upper die R (annealing can avoid cracks)

III bending point of view; IV bending standard; VI appearance, chrome-plated parts are not allowed to have creases.

        6. Welding: Welding definition: the distance between the atom and the molecule of the material to be welded is from the Jingda lattice.

b Pressure welding: spot welding, butt welding, bump welding

2 welding method: a CO2 gas shielded welding

c spot welding, etc.

The selection of welding method is based on practical requirements and raw materials. Generally, CO2 gas shielded welding is used for iron plate welding; argon arc welding is used for welding stainless steel and aluminum plates, and robot welding can save man-hours and forward working power. And welding quality, reducing the intensity of work.

4 arrow lines and connectors

Spot welding: the strength can not be bumped, the welding area is imposed

Argon arc welding: shallow depth of dissolution, slow welding speed, low power, high cost of production, has the disadvantage of clamping tungsten, but has the advantages of good welding quality, can weld non-ferrous metals, such as aluminum, copper, magnesium and so on.

Welding fixture bad improvement process

7 Welding deformation effect method: flame effect method

Hammering

Shanghai Sheet Metal Processing uses these methods to make Shanghai Sheet Metal better than other regions.