The production difficulty of stamping products

Type of metal material

There are a variety of metal materials used in the stamping process, such as aluminum, steel, copper, brass, etc. Each material has its own unique physical and chemical properties, such as hardness, ductility, tensile strength and so on. These properties directly affect the molding difficulty and the required force in the stamping process. For example, harder metals require more force to be stamped into shape, while softer metals, while easy to form, may be more prone to problems with tearing or warping.

The complexity of stamping product design

First, the diversity of design elements
Stamping product design usually contains a variety of elements, such as shape, size, hole position, bending, etc. The variety and combination of these elements directly determines the complexity of the design. For example, a stamping part with complex curves, multiple fine holes and bending angles is obviously more difficult to design than a stamping part with a simple shape and a single size.
Second, tolerance and accuracy requirements
The tolerance and accuracy requirements of Stamping Products are also important factors in determining the complexity of the design. Products with high precision and tight tolerances require finer mold design and tighter production control, which increases design complexity and production costs. For example, for Stamping Parts in certain precision instruments or electronic devices, their tolerances may be required to reach the micron level, which puts extremely high demands on both design and manufacturing.

Third, the characteristics of the material

The physical and chemical properties of different materials vary greatly, which also affects the complexity of stamping product design. For example, metals with higher hardness require more force during stamping and are more likely to crack or break; Softer metals, while easy to form, may be more prone to rebound or deform. Therefore, when selecting materials, it is necessary to fully consider the influence of their characteristics on the complexity of the design.
Fourth, the matching of production equipment and mold
The design of stamping products also needs to consider the matching of production equipment and molds. Different production equipment and molds have different processing capabilities and accuracy ranges, and if the design exceeds these ranges, it will increase the difficulty and cost of production. Therefore, in the design process, it is necessary to communicate closely with the production equipment and mold manufacturers to ensure the feasibility and economy of the design.
Five, the complexity of the process
The production of stamping products usually involves multiple processes, such as material cutting, stamping, deburring, surface treatment, etc. The complexity of these processes and the connection between each other will also affect the complexity of the design. For example, a complex product that requires multiple stamping and shaping processes is obviously more complex than a product that is molded once.

Precision and type of stamping product mold

First, the accuracy of the stamping die
Mold accuracy refers to the accuracy of the working parts of the mold, including dimensional accuracy, shape accuracy, position accuracy and surface accuracy. High precision mold is the key to ensure the accuracy of stamping products.
Dimensional accuracy: refers to the degree of conformity between the size of the mold working parts and the design size. The dimensional accuracy of the mold must be higher than the dimensional accuracy of the product to ensure the dimensional stability of the product.
Shape accuracy: refers to the degree of conformity between the shape of the working part of the mold and the design shape. The shape accuracy of the mold directly affects the shape accuracy and appearance quality of the product.
Position accuracy: refers to the relative position accuracy between the parts of the mold working parts. During the stamping process, the relative position between the upper die and the lower die must be accurate to ensure that the shape and size of the product meet the requirements.
Surface accuracy: refers to the roughness and finish of the surface of the working part of the mold. The surface accuracy of the mold has a direct impact on the surface quality of the product, especially for products requiring subsequent treatment such as electroplating and spraying.
The guarantee of mold accuracy needs to be controlled from many links such as mold design, processing, assembly and use. For example, the use of high-precision processing equipment and technology, the selection of high-quality mold materials, strict inspection and testing.

Second, the type of stamping die
Stamping die according to different classification standards can be divided into a variety of types, the following are some common classification methods:
Classification by structural form:
Single process die: In one stroke of the press, only one stamping process is completed. Such as punching die, blanking die, etc.
Composite die: In one stroke of the press, two or more stamping processes are completed at the same station at the same time. Composite molds can significantly improve production efficiency, but it is also difficult to design and manufacture.
Progressive die (continuous die) : A die with two or more stations in the feed direction of the blank, and two or more stamping processes are completed successively at different stations in one stroke of the press. The progressive die is suitable for mass production and can significantly improve production efficiency and material utilization.
Classification by process nature:
Blanking die: A die for separating material along a closed or open profile. Such as blanking die, punching die, etc.
Bending die: The die that causes the blank or other blank to bend and deform along a straight line (bending line) to obtain a certain Angle and shape of the workpiece.
Drawing die: It is a die that makes the blank of Sheet Metal into an open hollow part, or makes the hollow part further change its shape and size.
Forming die: The blank or semi-finished workpiece is directly copied and formed according to the shape of the convex and concave die, and the material itself only produces local plastic deformation of the die. Such as expansion die, shrink die, etc.
Riveting mold: The use of external forces to make the participating parts in accordance with a certain order and way to connect or lap together, and then form a whole mold.

Performance of production equipment
The performance of production equipment is also an important factor affecting the production difficulty of stamping products. Modern stamping equipment is often equipped with advanced technology such as hydraulic, pneumatic or servo systems, enabling precise application of force and high-speed production. However, there are differences in performance between different models and specifications of equipment, and choosing the right equipment is of great significance to ensure the stability of the production process and product quality.