First, the error synthesis method to eliminate the error of the machine tool itself is the most important way to ensure the final processing accuracy of the workpiece. The error synthesis method requires the measurement of the original errors of each axis of the machine tool. Because of its high measurement accuracy and flexible application, laser interferometer is the primary testing instrument for horizontal machining centers.

Second, the error compensation method The error compensation method is to artificially create an error to offset the original error inherent in the process system, or use one original error to offset another original error, and then reach the intention of improving the processing accuracy of the workpiece of the horizontal machining center. Generally, by reducing the void of the machine tool, improving the rigidity of the machine tool, and selecting the preload to make the relevant cooperation preload, and eliminate the effect of the void. It can also improve the stiffness of the workpiece and the tool, reduce the overhang length of the tool and the workpiece, and improve the stiffness of the process system. It can also choose reasonable clamping methods and processing methods, reduce cutting force and its changes, reasonably select tool data, increase the front angle and main declination angle, and carry out reasonable heat treatment of workpiece data to improve the processing performance of the data.

Third, the direct reduction of original error method Direct reduction of the original error method refers to the search for the direct elimination or reduction of the primary original error elements that affect the processing accuracy after identifying them. For example, after long-term use of horizontal machining centers, the transmission system formed by natural wear is inaccurate in positioning, reverse voids, etc.

Fourth, the error uniformity method The error uniformity method is to use closely related surfaces to compare and correct each other, or use each other as a benchmark for processing, in order to reach the horizontal machining center to eliminate the intention of processing errors.