Tolerance optimization design method of key part of multi-axis numerical control machine tool

Abstract

The invention discloses a tolerance optimization design method of key parts of a multi-axis numerical control machine tool, and belongs to the technical field of machine tool precision optimization design. The invention particularly relates to a multi-axis numerical control machine tool space error modeling method based on a multi-body system theory and an optimization design method of tolerance parameters of key parts of a multi-axis numerical control machine tool. According to the method, a multi-axis numerical control machine tool space error model and a multi-target optimization distribution model of tolerance parameters of key parts of a multi-axis numerical control machine tool are established; and in an initial design stage of a machine tool, tolerance parameters of key parts of the multi-axis numerical control machine tool are optimally distributed, so that most of the tolerance parameters can be relaxed to different degrees, the whole machine manufacturing cost of the numerical control machine tool is indirectly reduced, and the machine tool with the optimally distributed tolerance parameters can obtain higher machining precision.

Description

technical field [0001] The invention relates to a tolerance optimization design method for key components of a multi-axis numerically controlled machine tool, and belongs to the technical field of machine tool precision optimization design. Background technique [0002] As a working machine in the industrial field, CNC machine tools have been widely used in aerospace, wind power, and shipbuilding industries. Their development plays a very important role in improving my country's economic level and is a reflection of a country's machinery manufacturing capabilities and development levels. Its machining accuracy is an important index to measure the performance of the machine tool, and it also marks the scientific and technological level of a country, and the reasonable optimization design of the tolerance parameters of the key parts of the CNC machine tool is an effective method to improve the machining accuracy of the machine tool in the initial design stage of the machine tool...

AI Technical Summary

Problems solved by technology

[0010] In the invention patent of CN108445839A, only the key geometric errors can be identified, and the tolerance parameters of the key parts of the machine tool cannot be optimally allocated. Optimum design plays a strong demonstration and leading role for my country's CNC machine tool development units to invest in improving machine tool design at a lower cost, thereby promoting the accelerated production and application of more models of innovative high-end CNC machine tool products in my country

Images