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Español **How to calibrate the accuracy of CNC punching machines**
As a high-precision machining equipment, CNC punching machines may experience accuracy deviations after long-term use or relocation. Therefore, it is crucial to regularly calibrate the accuracy of CNC punching machines. The following are the detailed steps on how to calibrate the accuracy of CNC punching machines:
**1、 Parallel detection of slider stroke**
The parallelism of the slider stroke is a key indicator for measuring the machining accuracy of CNC punching machines. When calibrating, professional testing tools such as micrometers or laser interferometers should be used to perform a full inspection of the slider stroke. Ensure that the slider remains horizontal and parallel to the workbench during the up and down movement, eliminating machining errors caused by slider tilting or displacement.
**2、 Flatness detection of countertop and bottom surface**
The flatness of the countertop and bottom directly affects the stability of workpiece placement and machining accuracy. Use a spirit level or flatness detection instrument to conduct a comprehensive inspection of the tabletop and bottom surface, ensuring that the flatness is within the allowable range. If the flatness does not meet the requirements, it should be adjusted or repaired in a timely manner.
**3、 Inspection for center line of mould handle hole**
The accuracy of the centerline position of the mold handle hole is crucial for mold installation and positioning. Use professional measuring tools to check the position of the centerline of the mold handle hole, ensuring that it is consistent with the actual machining requirements. If there is any deviation, the relevant components of the machine tool should be adjusted or the mold handle hole should be repositioned.
**4、 Horizontal adjustment of machine tool bed**
The level of the machine tool bed is the foundation for ensuring the overall stability of the machine tool. Use a spirit level to conduct a comprehensive inspection of the machine tool bed. If any unevenness is found, adjust the machine tool support feet or foundation bolts to make the bed reach a horizontal state.
**5、 Calibration of relative position of moving parts**
The moving components of CNC punching machines include sliders, feeding mechanisms, etc., and their relative positions have a direct impact on machining accuracy. Use measuring tools to calibrate the relative positions of moving parts, ensuring accurate positional relationships between them.
**6、 Online testing of CNC system**
After completing the calibration of the mechanical part, an online test run of the CNC system is required. Through programming and trial operation, check whether the functions of the CNC system are normal and whether the movements of each axis are smooth and accurate. If any problems are found, the CNC system should be adjusted or repaired in a timely manner.
**7、 Detection of movement instructions for each axis**
Detect the movement instructions of each axis of the CNC punching machine to verify whether the machine tool can accurately execute programming instructions. By sending movement commands at different speeds and distances, observe the actual movement of the machine tool to ensure that the accuracy of the machine tool movement meets the requirements.
**8、 Benchmark position inspection**
The reference point is the reference point for positioning and machining of CNC punching machines. Use measuring tools to check the position of the reference point to ensure its accuracy and stability. If there is any deviation, the relevant components of the machine tool should be adjusted or the reference point should be reset.
By following the above steps to calibrate the accuracy of the CNC punching machine, the machining accuracy and stability of the machine tool can be guaranteed. In practical operation, it is necessary to strictly follow the operating procedures to ensure the accuracy and reliability of the calibration results. At the same time, regular precision calibration and maintenance of CNC punching machines are also important measures to maintain long-term stable operation of the machine tool.
