What is the inspection standard for machined parts

Machining refers to the removal of material by mechanically accurate machining, which is the abbreviation for machining. Precision cutting, that is, precision cutting, is processed by high-precision cutting machinery. Using high-precision processing machine tools, processing high-precision parts, and using error compensation technology to improve the machining accuracy of parts is the way to achieve precision machining of parts. What are the inspection standards for machined parts


Basic principle: This acceptance method only accepts materials of 100% specified size. For workpieces with matching requirements, the size inspection must conform to Taylor's principle, and the working size of the hole or shaft must not be larger than the actual size.


The principle of extra-small deformation: In order to ensure the reliability and accuracy of the measurement results, the influence of various factors should be avoided as much as possible when the deformation planning is carried out to make it extra-small.


The principle of ultra-short dimension chain: To ensure that a certain measurement accuracy is required, the measurement chain should be as short as possible.


Closing principle: When measuring, if the closing condition is met, then the sum of the interval difference is equal to zero, that is, the closing principle. Basically agree with the principle: the vehicle benchmark should conform to the design benchmark and process benchmark.