In precision machining, errors are inevitable. To ensure work efficiency, reduce material waste, and lower labor costs, it is crucial to guarantee and enhance the precision of the machining process. What are the methods to improve the precision of mechanical machining?

The Method of Reducing Original Errors: During production, if errors are found, the primary factors affecting the processing errors should be identified first, and then efforts should be made to eliminate or reduce these factors. For example, when processing parts with shaped surfaces, the main focus is to minimize the shape errors of the forming tools and the installation errors of the tools.

Original Error Compensation Method: Manually create a new error to offset the original errors in the process system. When the original error is negative, the manually introduced error is taken as positive, and vice versa, as negative, with the aim of making the magnitudes of both errors as equal as possible.

The Original Error Transfer Method: Under certain conditions, the original errors of a process system can be transferred to the non-sensitive direction of machining errors or to other aspects that do not affect machining accuracy. For instance, when the machine tool precision fails to meet the part processing requirements, one can seek solutions from the process or the fixture to create conditions that transfer the machine tool's geometric errors to areas that do not impact machining accuracy.

The Original Error Averaging Method: When there is a large positioning error, it is possible to adopt a method of dividing certain original errors. This involves dividing the original errors into n groups based on their size, reducing the rough error range to 1/n of the original, and then adjusting the processing for each group separately.

The Raw Error Equalization Method: For parts with high precision requirements, the equalization method can be employed. This involves comparing surfaces with close relationships, identifying discrepancies through these comparisons, and then conducting mutual corrections or using each other as a reference for machining, continuously reducing and equalizing the errors on the workpiece's machined surfaces.

In the field of mechanical processing, it is inevitable to have precision errors. Only by conducting a detailed analysis of the factors affecting these errors can we implement appropriate preventive measures to reduce processing errors and enhance the efficiency of mechanical processing.