What Are The Manufacturing Process Steps Of Precision Metal Stamping Parts?

1.Design of stamping parts

(1) the result of the design and implementation of stamping parts is a three-dimensional entity with relevant concepts such as color, material, hardness, shape, size, position, relevant parts and manufacturing process.(2) the emergence of computer technology directly starts with the three-dimensional concept of design, which can more intuitively and accurately express all the geometric parameters of the design idea, and the whole design process can be completely discussed on the three-dimensional model.(3) computer technology can help the stamping engineer to rationalize the design process with the view of design and manufacturing, and gradually create stamping parts from the generation of sheet materials and the completion of each process.(4) it can be regarded as a virtual environment for stamping parts. Engineers can directly design and assemble parts on the computer screen. The virtual production process is almost the same as the real process.(5) after the design of a single stamping part is completed, the three-dimensional model of multiple parts can be simulated for assembly, thus greatly shortening the design and cycle.

2.Stamping parts development

After the design of the stamping parts is completed, it is necessary to convert it into an expansion diagram to determine the size and shape of the required sheet metal.(1) the operation amount of cad is small, and the development process is completely controlled by computer.(2) computer-aided design is efficient and avoids the mistakes that are easy for engineers to make during development.(3) the computer-aided design is of high accuracy, and the expanded data is completely calculated by the computer, thus avoiding the large amount of food cost of materials.

3. Choose stamping oil

Stamping oil plays a key role in the stamping process. Good cooling performance and extreme pressure wear resistance have a qualitative leap for the service life of the die and the improvement of workpiece accuracy.Selection should be based on the raw material of the workpiece to match :(1) carbon steel plate in the selection of stamping oil should be based on the process and degreasing conditions to determine the better viscosity.(2) because of the chemical reaction with chlorine additives, galvanized steel sheet should pay attention to the possible white rust of chlorine type stamping oil when choosing stamping oil, and use yida borun sulfur stamping oil can avoid the problem of rust, but should be degreased as soon as possible after stamping.(3) stainless steel is easy to produce hardening material, the need to use oil film strength, good sintering resistance stretch oil.General use of sulfur chloride compound additive stamping oil, in order to ensure the extreme pressure performance and avoid burr, fracture and other problems of the workpiece.

4. Stamping plate blanking (1) cutting machine blanking is the use of scissors to cut out the shape of the figure length and width.If there is punching, Angle cutting, and then turn the punch press combined with die punching, Angle cutting forming.Its advantage is the high time efficiency, is often used in mass production. (3) the first CNC programming nc blanking, map of writing into the content of the nc machine tools can identify, let it step by step according to the content of the flat piece of structure shape, coining out. (4) is the use of laser cutting laser cutting way, on a plate the flat shape of the structure of the cut out.

5. The machine tool plate punching general punching process has punching Angle cutting, punching blanking, punching convex bag, punching tear, hole extraction and other ways, in order to meet the requirements of each process, need to have the corresponding mold to complete the operation, such as convex mold, tear forming die.

6. Plate tapping and riveting

Flanging is to draw a slightly larger hole in a smaller base hole and tap on it.Doing so can increase its strength and avoid sliding teeth.Riveting bolt, riveting nut and riveting bolt are often used for riveting. The riveting method is usually operated by punch press or hydraulic riveting machine, which can be riveted to the stamping parts.

7. Plate three-dimensional bending

Bending is the flat piece into three-dimensional parts, the need for folding bed and the corresponding bending mold to complete the operation.It also has a certain bending sequence, the principle of the next knife does not interfere with the first fold, will produce interference after the fold.Eight, the workpiece surface treatment surface treatment generally phosphating coating, plating colorful zinc, chromate, paint, oxidation, etc.Phosphating film is generally used for cold-rolled plate and electrolytic plate, its role is mainly in the material table on a layer of protective film to prevent oxidation;Electroplating multicolored zinc commonly used cold-rolled plate surface treatment;Chromate and oxidation are generally used for surface treatment of aluminum plate and aluminum profile.