In front of the knowledge of the mechanical processing, there have been many, but for us, that knowledge is not enough to fully sum up, it will have omissions, so you need to add and update the knowledge, so that we can have more updated knowledge in time, thus understanding of machining
this aspect to be comprehensive and detailed.
Content: heat treatment of parts heat treatment in the process of precision machining parts machining process, generally can be divided into preliminary heat treatment and final heat treatment of these two.
Preliminary heat treatment: its purpose is to improve the mechanical properties, eliminate the internal stress, in order to prepare for the final heat treatment, generally including annealing, normalizing, tempering, and aging treatment, etc. These processes.
To prepare heat treatment, usually after rough precision machining.
Final heat treatment: its purpose is to improve the hardness and wear resistance of the parts, such as quenching, carburizing, nitriding process, is usually conducted before and after finishing, finishing.
Content 2: the precision of the machining accuracy of machining, mainly embodied in the following several aspects, for dimensional accuracy, precision and position accuracy of geometry geometry precision roundness and straightness and flatness, position accuracy of including parallelism, perpendicularity and coaxial degree, etc.
Three: get the method of mechanical precision machining accuracy have?
Dimensional accuracy: there try to cut method, the adjustment method, main dimension method and automatic control, etc. These methods.
Geometry precision: the main locus method, displayed and the generating method of these methods.
Position accuracy of: installed mainly include direct method, the alignment method and fixture installation method, etc. These methods.
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