Today, with the rapid development of science and technology, more and
more common machine tools have been difficult to meet the production demand,
so it is necessary to upgrade them, and gradually transform the common machine
tools to CNC machine tools. CNC machine tools will make up for the disadvantages
of ordinary machine tools, such as high labor intensity, high risk, etc., and have the
functions of finishing, multi process centralization and automatic compensation. This
paper makes a brief analysis of the quality control of the reformed CNC machine tools.