Metal Stamping Die
The metal stamping die is made of metal materials and uses a stamping machine to apply pressure to the tool body. After processing, the material in the tool will undergo shape changes.
Metal Stamping Die
- Die Construction
- Two-part Design
- Press Operation
- Material Placement
- Shaping Process
- Multiple Operations
- High-speed Production
Metal Stamping Die Capabilities
The stamping process alters the metal’s properties through work hardening, potentially requiring annealing between operations for some materials.
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US
Metric
Aluminium Alloy
68.9in. x 27.6 in. x17.7in.
1750mm x 700mm x450mm
Magnesium Alloy
68.9in. x 27.6 in. x17.7in.
1750mm x 700mm x450mm
Copper Alloy
68.9in. x 27.6 in. x17.7in.
1750mm x 700mm x450mm
*Proper material selection is crucial for achieving the desired die performance, longevity, and cost-effectiveness in metal stamping operations.
Metal Stamping Die Material
Metal stamping die is typically made from various types of steel, with the specific material selected based on the requirements of the stamping application
Material
- Aluminium Alloy
- Magnesium Alloy
- Copper Alloy
The Advantages of Metal Stamping Die
Advantages
- Low cost and high automation level. The production and maintenance costs of metal stamping die are often relatively lower than those used in other processes. The stamping process can be highly automated, reducing labor costs.
- Good dimensional accuracy and consistency. The dimensional accuracy of stamped parts is guaranteed by the die, which has identical features. This leads to stable quality and good interchangeability of parts.
- Ability to produce complex shapes. Stamping die can create parts with thin walls, lightweight, good rigidity, high surface quality, and complex shapes that are difficult to manufacture by other methods
- High efficiency and production speed. Stamping presses can produce dozens to hundreds of pieces per minute, making it a very efficient processing method.
- Precision and tight tolerances. Stamping die enables manufacturers to achieve high precision and tight tolerances in each stamped piece
Application of Metal Stamping Die
Widely used in automotive, consumer goods, and electronics industries.
Guidelines for Metal Stamping Die
Metal stamping die is a crucial tool in the mass production of sheet metal components, offering high-speed manufacturing capabilities for various industries.
Metal Stamping Die
Metal Stamping Die
Metal stamping die, which use a stamping machine to apply pressure on the tool body, are mainly made of metal materials. Under the processing of equipment, the metal materials in the tool will undergo shape changes. There are many types of die, including deep drawing dies, punching dies, bending dies, riveting dies, etc. based on their functions. The working principle of a deep drawing die is to use a convex and concave die with the same shape, where the metal material is pressed by a pressing plate and then processed according to the design requirements. The material is made into various open hollow parts.
The process and manufacturing of dies made of metal materials are comprehensive, and the stamping process design of dies and the structural design of metal stamping die play important roles. The process design of the die has a lot of content, mainly including the design scheme, the size of the process, the corresponding equipment for each product, and the material of the tool.
Punching of Metal Stamping Die
Blanking is a stamping process that separates one part of the material from another through the concave-convex film inside the tool. The separation process mainly includes material cutting, punching and trimming, punching grooves, etc. These separation processes are all included in the punching process. In stamping production, the stamping process is mainly used to produce components.
There are several processes for metal stamping die. The two processes of material cutting and punching have different uses. Blanking refers to using a metal stamping die to cut along the edge, and the cut part is the workpiece. Then another process is punching, which uses a die to cut the outer part along the edge as a punching part.
1.The process of punching deformation
During the punching process of the metal stamping die, the sheet metal will undergo significant deformation. The transition from elastic deformation to plastic deformation will eventually result in fracture separation.
Elastic deformation stage: After the convex film comes into contact with the sheet metal, it will begin to apply pressure. The sheet metal will deform under the action of the concave-convex film, including bending, squeezing, compression, etc.
The plastic deformation stage of metal stamping die: Due to the application of pressure on the sheet metal, the material undergoes plastic deformation. If the depth of the punch pressing into the sheet metal increases, the degree of plastic deformation will also increase. If cracks occur in the material around the edge due to excessive pressure, it means that the plastic deformation stage is completed.
Fracture separation stage: Under the pressure of the convex dies, the stress around the blade meets the material’s failure stress. Cracks occur in the deformation zone near the concave-convex die edge, and then the cracks gradually increase, with the maximum shear stress gradually extending towards the inner layer of the sheet metal. Finally, the sheet metal will be separated, which means that the punching process has been completed.
2.Punching clearance
The punching gap refers to the dimensional difference between the cutting edge of the punching concave-convex dies. The clearance of punching plays an important role in the quality of the workpiece and also has a significant impact on the pushing force and service life of the workpiece. The performance and thickness of the plate, as well as the punching method, will have a related impact on the cutting gap.
3.Precision punching method
To ensure the surface of the punching section has high quality, technicians usually use precise punching methods. A vertical and clean cutting surface will be obtained. The essence of a precise punching method is to make the material in the shear deformation zone around the edge of the tool under three compressive stresses during stamping, to prevent fracture and material separation. Technicians will also enhance the pressure circle by hedging and cutting.
If the production batch of the product is relatively small, in general, the rubber will be replaced by one blade of the punching dies, and then the other blades will complete the separation step. The method of using rubber material to complete is called rubber punching.
Processing Equipment for Metal Stamping Die
In the tool manufacturing industry, operators need to correctly design the structure of the stamping die and ensure advanced stamping tool manufacturing processes. The key step to becoming an advanced tool manufacturing process is to have good tool manufacturing equipment.
1.Lathe Machining
Lathe machining is also known as turning. This is a machining method that completes a specified shape by cutting raw materials, which belongs to cutting machining.
In the tool manufacturing industry, lathes are one of the commonly used machines. Each type of lathe has a different purpose and structure. Select the corresponding machining lathe equipment according to the manufacturing method of each product. There are many types of lathes, mainly including vertical lathes, floor lathes, single-axis automatic lathes, and semi-automatic lathes, as well as turret lathes. In addition, there are various specialized lathes, including crankshaft lathes, wheel lathes, axle lathes, etc. The lathe is a processing equipment with good versatility. Therefore, lathes are one of the most widely used equipment in the tool manufacturing industry.
There are many functions of a lathe, mainly including its ability to turn various end faces and rotating surfaces on tool parts, such as ring grooves, rotating surfaces, and conical surfaces. In addition to the above functions, equipment like lathes can also be used. Perform processing steps such as hole enlargement, drilling, and embossing. The height of each processing part is advantageous for technicians to operate and observe conveniently.Turning involves many processes, mainly including rough turning, precision turning, and semi-precision turning. The advantage of precision lathes is that they have extremely high machining accuracy and can perform precise machining to manufacture more precise components.
Among various lathe equipment, the bedroom lathe plays the most important role. The spindle of a typical bedroom lathe is in a horizontal position. The components are designed on the spindle through a flower disc or chuck or can be installed between the top of the tailstock and the head of the bed.
The structure of the bedroom lathe includes a spindle box, feed box, slide box, switch lever, light rod, lead screw, bed leg, three-jaw self-centering chuck, middle slide plate, knife holder, small slide plate, large slide plate, tailstock, and bed body.
2.Milling Machine Processing
A milling machine is a device that uses a milling cutter for cutting and processing. The structure of a milling machine includes a base, bed body, crossbeam, spindle, hanger, longitudinal worktable, rotary table, lifting table, and transverse worktable. Milling machines are developing rapidly in the manufacturing industry, and the automation level of milling machines is gradually improving. The manufacturing range of milling machines is also expanding, and their accuracy is gradually increasing.
The main motion of a milling machine is caused by the rotation of a multi-foot cutting tool. According to the specified machining requirements, feed motion is mainly achieved by manufacturing components in one of the three vertical directions to meet the machining requirements.
During the production process, multiple tool rulers are generally used for cutting, as milling machine equipment has multi tooth cutting dies. Due to the presence of a multi-tooth cutting die, using milling machines as equipment for manufacturing products will result in higher production efficiency.
Types and Functions of Metal Stamping Die
1.Engineering Model
An engineering tool is a single tool that can only achieve a certain step in the stamping process during the manufacturing process, and may also be a part of a more complex process. In terms of low production efficiency. It can be developed according to the stamping product forming process, including punching dies, bending dies, leveling dies, shearing dies, stretching dies, etc. The entire product will gradually complete the stamping process on multiple machines die and die according to the steps, and other processes will also be inserted during the stamping process, including welding and adding parts.
2.The Upper and Lower Die
The metal stamping die is divided into two parts, including a convex die and a concave die, which can also be called an upper die and a lower die. The gap between the upper and lower die, as well as the sharpness of the cutting edge, have a significant impact on the quality of the cutting section. Most traditional techniques use tool steel materials for processing, and the force required for stamping low-carbon steel is much smaller than that required for stamping stainless steel. So, the rack of the equipment must be sturdy to withstand great impact pressure. If stainless steel material is scratched by extremely high friction and temperature during the stamping process. In general, lubricants are used instead of soap because their effectiveness is not as good as lubricants. Stamping lubricant is not made of one material, it is synthesized from multiple materials. Lubricants have many advantages, and when faced with different stamping dies, stamping lubricants will also have corresponding products. Commonly used in the process of workpiece forming, including punching, bending, punching, deep drawing, and other processes.
3.Continuous Mode
In the stamping process, the metal stamping die is continuously manufactured, and the sheet metal is input into the equipment for processing, ultimately forming a stamped product. Throughout the entire stamping process, the continuous die is used for continuous stamping, and it has high efficiency and high production automation. metal stamping die is generally used to manufacture stamping components with less complex forming processes These types of products often can be formed in one go and are suitable for large-scale production, such as fans, automotive parts, iron shells, etc. After completing the stamping process, the continuous die also needs to undergo some surface treatment processes to be considered as completing the entire product.
