The problem that should be paid attention to in the error solution of CNC machine tools According to the above ideas to solve the error of CNC machine tools, there are two aspects to be noted. Since it is impossible to measure all the tool position and posture in the working space, it is impossible to determine whether a certain machine tool manufacturing error can make any tool position error zero. Only select as many tool positions as the measuring points in the working space, if If the error of the tool position of these measuring points is zero, it can be considered that this set of machine tool errors is the most reasonable. The number of selected measuring points and the uniformity of the distribution will affect the accuracy of the machine tool error solution.
We must find a way to find the error of this group of machine tools, we can use the optimal search method to solve this set of machine tool errors. But using the optimal search method, first find the equation that can be calculated as the objective function, so that the optimization calculation can be performed.
Method for Solving CNC Machine Tool Errors The following is an explanation of the error solution for implementing the above CNC machine tools. Assuming a set of machine tool manufacturing errors, in the case of manufacturing errors, the actual tool position data contains the tool positions at different points in the machine tool workspace. These points are called measurement points. The number is in the middle, and the position of the screw nut corresponding to the position of the tool at each measuring point is inversely solved, which is called the actual screw nut position.
Regardless of the machine tool manufacturing error, the ideal tool position data from each measuring point is input to the tool position of each measuring point of the CNC machine tool, and then the screw nut corresponding to the desired tool position is processed in each measuring point. The position is called the ideal screw nut position. If the two are consistent for any measurement point, the machine tool manufacturing error is considered.
Matches the actual tool position and posture. Therefore, the objective function is taken, and the process of solving the machine tool error is the solution of the solution. Therefore, the solution method of the machine tool error is: by testing the machine manufacturing error according to a certain rule until a set of machine tool manufacturing errors corresponding to the experimental data is found, the manufacturing error of the machine tool is the machine tool manufacturing error, which is called the calculation error. . The steps are as follows: the actual position of the tool is measured at multiple positions, and the difference between it and the ideal position is the tool motion error; according to the ideal position and posture, the ideal screw nut position is inversely solved considering the actual error of the CNC machine; In the manufacturing error of the machine tool, under the condition of consideration, the position of the nut corresponding to each measuring point is inversely solved from the measured actual position of the tool; if the objective function is the convergence precision coefficient, the calculation is taken, indicating the error obtained for the machine tool movement. The influence is the same as the impact, and the error is compensated by the error instead of the actual error of the machine tool.
Conclusion In this paper, the error compensation segmentation compensation method and the error compensation experimental verification scheme are designed. The effectiveness of the error analysis method is verified by processing a specific workpiece. The experimental results show that the accuracy of the compensation is obviously improved, which proves the effectiveness of the error solving method.
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