Electric punch press

We are a professional electric punch press manufacturer with over 10 years of industry experience. Today, we would like to introduce to you:

Electric punch press is a mechanical equipment that uses an electric motor to drive the crankshaft to rotate, and drives the slider to move up and down through the crankshaft connecting rod mechanism, thereby stamping and processing workpieces. To determine the machining accuracy of an electric punch press, comprehensive consideration and evaluation can be made from the following aspects:

1.Accuracy indicators of the equipment itself
Understanding accuracy levels: Referring to JIS standards, punch accuracy levels are divided into ordinary accuracy level (GP1), higher accuracy level (GP2), high accuracy level (HP), and ultra-high accuracy level (UP). The higher the level, the higher the performance requirements of the punch press, and the corresponding processing accuracy is also improved. When choosing an electric punch press, it should be clarified whether its accuracy level meets the processing requirements.
Testing the accuracy of key components:
Flatness of worktable and slider bottom surface: Use a micrometer or dial gauge to check the flatness of the worktable and slider bottom surface, ensuring that it is within the allowable tolerance range (such as 0.05mm) within the specified length (such as 1000mm). The quality of flatness directly affects the accuracy of stamped parts.

The accuracy of the mold handle hole: The mold handle hole is a key part for installing the mold, and its accuracy directly affects the installation accuracy of the mold and the dimensional accuracy of the stamped parts. The dimensional accuracy, shape accuracy, and positional accuracy of the mold handle hole should be tested.

2.Precision control during processing
Selection and installation of molds:
Mold accuracy: Choose molds with high precision and good quality to ensure that the size accuracy, shape accuracy, and fit accuracy of the mold meet the processing requirements.
Mold installation: The mold should be correctly and firmly installed on the electric punch press to ensure the relative positional accuracy between the mold and the punch press worktable.
Setting of stamping process parameters:
Stamping speed: Reasonable stamping speed can improve the accuracy and surface quality of stamped parts. Excessive speed may cause deformation or dimensional deviation of stamped parts.
Punching force: The magnitude of the punching force should be moderate. Excessive punching force may cause the stamped part to break or deform, while insufficient punching force may prevent complete stamping and forming.
Lubrication and cooling:
Good lubrication can reduce friction and wear, improve the accuracy and lifespan of electric punch press.

Appropriate cooling can prevent the punch from overheating and maintain its stable working condition.

3.Precision testing after processing
Selection of measuring tools: Use measuring tools that comply with JIS standards or other international standards to measure stamped parts, ensuring the accuracy and reliability of the measurement results.
Standardization of measurement methods: Measure according to the prescribed measurement methods and steps to ensure the objectivity and consistency of the measurement results.

Data analysis and evaluation: Conduct data analysis on the measurement results to evaluate whether the accuracy of the stamped parts meets the design requirements. If the accuracy is found to be out of tolerance, the stamping process parameters should be adjusted or the mold should be replaced in a timely manner.

4.Long term operational stability
In addition to the short-term evaluation of the above aspects, it is also necessary to consider the stability of the electric punch during long-term operation. This includes the wear resistance, fatigue resistance, and ease of maintenance of the equipment. A stable electric punch press can maintain high machining accuracy and stable performance during long-term operation.
In summary, determining the machining accuracy of an electric punch requires comprehensive consideration and evaluation from multiple aspects, including the precision indicators of the equipment itself, precision control during the machining process, precision testing after machining, and long-term stability during operation. Through comprehensive testing and evaluation, it can be ensured that the selected electric punch meets the processing requirements and has high processing accuracy.
If you need or are interested in electric punch press, please feel free to contact us and we will provide a detailed introduction and quotation for suitable machines.