Views: 22 Author: Site Editor Publish Time: 2020-09-28 Origin: Site
Different sheet metal parts have their own set of processing procedures. Some metal sheets are plastically deformed by hand or die stamping to form a certain shape and size. With the difference in the structure of sheet metal parts, the process is also different. Let's take a look at the processing process of sheet metal.
1. Firstly, design and draw the part drawing of its sheet metal parts. This is also called three views. Its purpose is to use drawings to express the structure of the sheet metal parts.
2. Draw an unfolded drawing, that is, unfold the parts with more complex structure into a flat piece.
3. Cutting method and method:
a. Shearing machine cutting method: mainly use the shearing machine to out the shape, length and width dimensions of the unfolded drawing. If there is punching or corner cutting, the rotary punching machine combines die punching and corner cutting to form.
b. Punch blanking method: This method uses a punch to punch the flat part structure after the parts are unfolded on the plate in one or more steps. Its advantages are short labor time, high efficiency, and effective reduction of processing costs. , Can be seen during mass production.
c. NC blanking method: When NC blanking, programming software should be used to compile a NC machining program, and the drawn expanded diagram should be written into a program that is recognizable than the NC machining machine tool, which is placed on an iron plate according to the program-step-step.
Punch out the structural shape of its flat parts
d. Laser blanking method: Laser cutting is mainly used to cut the structure and shape of the flat piece on a wooden board.
4. Flanging and tapping
Flanging is also called hole extraction. A smaller base hole is drawn into a slightly larger hole, and the hole is tapped. This can increase its strength and avoid slippage. It is generally used for plates with thinner plates. Piece plus
Workmanship, such as 2.0, 2.5, etc. and above, we can tap directly without flanging.
5. Punch processing
Generally speaking, punching processing methods include punching and cutting corners, punching and blanking, punching convex hulls, punching and tearing, and punching holes to achieve the processing purpose. The processing requires a considerable mold to complete the operation.
For punching the convex hull, there is a tearing mold for punching and tearing. Wait for its pressure riveting method to complete the operation by punching or hydraulic pressure riveting machine, and riveting it to the sheet metal part.
Bending is a froming process. The processing needs to be completed with a folding bed and corresponding bending molds. It also has a certain bending sequence, and the principle is that the next cut will not cause interference.
If the involved fold is first, it will cause interference to fold back.
When welding, multiple parts are welded together to achieve the purpose of processing, or the edge of a single part is welded to increase the strength. The processing methods are generally as follows: C02 gas shielded welding, argon
Arc welding, spot welding, robot welding, etc. The selection of these welding methods is based on actual requirements and materials. Generally speaking, CO2 gas shielded welding is used for iron plate welding, and argon arc welding is used for aluminum.
For board welding, robot welding is mainly used for larger parts and longer welding seams, such as cabinet welding, robot welding can be used.
8. Surface treatment
Surface treatment generally includes phosphating film, electroplating colorful zinc, chromate, baking varnish, oxidation, etc. Phosphating film is generally used for cold-rolled plates and electrolytic plates. Its function is mainly to plate the surface of the material.
Protective film to prevent oxidation. Then it can enhance the adhesion of the paint. Electroplating colorful zinc is generally used for surface treatment of cold-rolled plates; chromate and oxidation are generally used on the surface of aluminum plates and aluminum profiles.
Rationale: The selection of the specific surface treatment method is based on the customer's requirements.
Assembling is to put multiple parts or components together in a certain way to make them into a complete material. One thing that needs to be paid attention to is the protection of the materials, and do not scratch the group
Assembling is the last step to complete a material. If the material cannot be used due to scratches, it needs to be reworked and reworked, which will waste a lot of processing man-hours and increase the cost of the material. Therefore, pay special attention to the material
Goldconn is a well-known sheet metal manufacturer in China with 16 years of manufacturing experience. It is also the world's leading provider of sheet metal processing solutions, focusing on the automatic integration of materials and information flows in the cutting and bending process chain. The business scope covers laser cutting, bending, automation and software. The full range of services makes various products more advanced perfect. We are committed to providing first-class products and services sourced from high-end technology to help customers become world-class manufacturers.