Manhart How to consider the influence of machine tool structure when evaluating the machining accuracy of CNC punching and shearing machines?

It is crucial to consider the influence of machine tool structure when evaluating the machining accuracy of CNC punching and shearing machines. The structure of a machine tool not only determines its rigidity, stability, and vibration resistance, but also directly relates to the positioning accuracy and machining accuracy of the parts during the machining process. The following are specific steps and key points on how to consider the impact of machine tool structure in evaluation:
1、 Evaluate the rigidity of the machine tool structure
1. * * Rigid analysis * *: Evaluate the degree of deformation of the machine tool structure under stress. Higher rigidity can reduce machine tool deformation caused by factors such as cutting force, inertia force, and thermal deformation, thereby maintaining higher machining accuracy.
2. * * Observe the bed design * *: Check whether the bed adopts an integrated casting or welding structure to ensure that it has sufficient rigidity and stability. For example, as mentioned in reference article 2, the equipment bed adopts a carbon steel plate welded structure and undergoes high-temperature tempering for effective treatment, which can ensure the firmness and impact resistance of the machine tool structure.
2、 Evaluate the stability of the machine tool structure
1. Stability test: Observe the vibration and noise of the machine tool during operation. Lower vibration and noise indicate that the machine tool has good stability.
2. Structural layout analysis: Evaluate whether the layout of each component of the machine tool is reasonable and whether it can ensure stability during the machining process. For example, check whether the spindle box, feed box and other components are arranged in a reasonable position to reduce vibration caused by center of gravity deviation.
3、 Evaluate the vibration resistance of the machine tool structure
1. Anti vibration evaluation: Consider the impact of external vibrations (such as foundation vibrations, peripheral equipment vibrations, etc.) on the machining accuracy of the machine tool during the machining process. Machine tools with good vibration resistance can better resist these interferences and maintain machining accuracy.
2. * * Vibration isolation measures * *: Evaluate whether the machine tool has adopted effective vibration isolation measures, such as installing vibration isolation pads, shock absorbers, etc., to reduce the impact of external vibrations on machining accuracy.
4、 Induction and Summary
When evaluating the machining accuracy of CNC punching and shearing machines, the influence of machine tool structure cannot be ignored. By analyzing the rigidity, stability, and vibration resistance of machine tools, we can gain a more comprehensive understanding of their machining performance. At the same time, when choosing a CNC punching and shearing machine, the structural characteristics, machining accuracy requirements, and cost factors of the machine tool should be comprehensively considered based on actual needs, and the machine tool with the highest cost-effectiveness should be selected.
In addition, the detection methods mentioned in Article 1, such as the parallelism of the slider stroke to the task table, the flatness of the punch table and slider bottom, and the parallelism of the slider stroke to the centerline of the punch handle hole, can also serve as important reference for evaluating the impact of machine tool structure on machining accuracy. These detection methods can help us more accurately understand the actual performance of the machine tool structure, thus making more reasonable choices.