Do you know the influence of CNC machining accuracy?

The influence of CNC machining position error on CNC machining accuracy Positioning error refers to the change or deviation of the mutual position between the actual surface, axis or symmetry plane of the workpiece to be machined and its ideal position, such as perpendicularity, displacement, symmetry degree, etc. In CNC machining, position error usually refers to dead zone error. The machining error of CNC parts due to transmission clearance and elastic deformation during the machining process, as well as the friction that the forehead needs to overcome during machining, are the main reasons for the position error. The open-loop system has a great influence on the position accuracy, while the position accuracy of the closed-loop servo system mainly depends on the displacement detection.

Which CNC machining center is better?

Machining accuracy error caused by CNC machining geometric error. During CNC machine tool processing, due to external factors such as external force and heat generated during processing, the geometric accuracy of the machine tool is affected, and the geometric deformation of the parts generated during processing results in geometric errors. Theoretically, there are internal factors and external factors for the reasons of the geometric errors of CNC machine tools. The internal factors that lead to the geometric error of the machine tool refer to the geometric error caused by the factors of the machine tool itself, such as the levelness of the tooling table, the level and straightness of the guide rail, and the geometric accuracy of the machine tool and fixture. The external factor mainly refers to the geometric error caused by the external environment and thermal deformation during the processing. During the cutting process, the geometric error caused by thermal expansion and contraction and deformation of the tool or part will affect the machining accuracy of the machine tool and the part.

Through the long-term data analysis and actual operation of parts processing, it can be seen that the machining accuracy error caused by CNC machining machine positioning. In CNC machine tools, the position of the machine tool has a great influence on the machining accuracy. In terms of structure, the machining error of CNC machining machine mainly comes from the positioning accuracy, and the machine tool feed system is its main link. The CNC machine tool feed system generally consists of two parts: mechanical transmission and electrical control. In the mechanism design, the positioning accuracy mainly depends on the mechanical transmission system. In general, in a closed-loop system, the CNC machine tool can prevent the positional deviation of the main components of the feeding system, such as the ball screw, through the positioning detection device. However, for the open-loop system, due to many influencing factors and complex positioning monitoring conditions, the machining accuracy of CNC machine tools is greatly affected.

The above is the reason that affects the CNC machining accuracy, I hope it can help you, if you want to know more about CNC machining, welcome to consult online or call this book The company's service hotline (the upper right corner of the website), we will be happy to provide you with quality service!