What is a cupping testing machine?
The cupping tester is a professional equipment used to test the forming performance of metal sheets. It is mainly used to evaluate the ductility and fracture resistance of metal materials during the stamping process. It is widely used in automobile manufacturing, aerospace, home appliance production and other fields, and is one of the important tools for testing the mechanical properties of materials.
Working principle of cupping testing machine

The cupping testing machine measures the forming limit of a metal sheet by simulating its deformation behavior during the stamping process. During the test, the metal plate is fixed on the mold, and pressure is applied through the punch to gradually deform the plate until it breaks. By recording the punching depth and deformation at breakage, the formability of the material can be evaluated.
Application fields of cupping testing machine
Cupping testing machines have important applications in the following fields:
| Industry | Application scenarios |
|---|---|
| automobile manufacturing | Testing the formability of body panels |
| Aerospace | Evaluating the ductility of aerospace materials |
| Home appliance production | Testing the stamping properties of housing materials |
| Scientific research institutions | Study the mechanical properties of new materials |
Main parameters of cupping testing machine
The performance of a cupping testing machine is usually determined by the following parameters:
| Parameter name | Description | Typical value |
|---|---|---|
| Maximum test force | The maximum pressure the device can exert | 50-200kN |
| punch stroke | Maximum moving distance of punch | 0-100mm |
| Test speed | punch moving speed | 1-500mm/min |
| Sample size | Testable board sizes | 70×70mm to 200×200mm |
Test standards for cupping testing machines
The cupping test follows a number of international and national standards to ensure the reliability and comparability of test results:
| Standard number | Standard name |
|---|---|
| ISO 20482 | Metallic materials—Plate and strip—Cupping test method |
| GB/T 4156 | Erikson Cupping Test for Metallic Materials Sheets and Strips |
| ASTM E643 | Standard method for cupping test of sheet metal |
Key points for purchasing a cupping testing machine
You need to consider the following factors when purchasing a cupping testing machine:
1.Testing requirements: Select the appropriate model according to the type and thickness range of the material to be tested.
2.Accuracy requirements: High-precision applications require equipment equipped with high-resolution sensors.
3.degree of automation: Automatic sample delivery and data collection functions can improve testing efficiency.
4.After-sales service: Choose a supplier that provides comprehensive technical support and accessories supply.
Cupping testing machine maintenance
In order to ensure the long-term stable operation of the cupping testing machine, the following maintenance work needs to be performed regularly:
| maintenance items | cycle | Operation content |
|---|---|---|
| Lubrication and maintenance | monthly | Lubricate all moving parts |
| Sensor calibration | quarterly | Calibrating force sensors and displacement sensors |
| Electrical inspection | every six months | Check electrical connections and insulation |
| Comprehensive overhaul | every year | Comprehensive inspection by professional technicians |
Development Trend of Cupping Test Technology
With the advancement of materials science and increasing industrial needs, cupping test technology is developing in the following directions:
1.Intelligent: Integrated AI algorithm to achieve automatic defect identification and result analysis.
2.High precision: Adopt higher precision sensors and control systems.
3.Multifunctional: One device integrates multiple material testing functions.
4.Digitization: Test data cloud storage and analysis.
As a key equipment for testing material formability, the cupping testing machine’s technological progress will effectively promote the development of materials science and manufacturing.
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