processing process and precision of precision parts processing plants: the interpretation of the following about mechanical processing technology of heat treatment and precision of interpretation for everyone to share.
Machining process and precision problems, is the hottest topic discussed recent numerous industry, believe to also is not very understanding, in daily work will make us feel a hindrance;
In order to solve this problem, in order to help people to have more knowledge of mechanical processing, in order to better use in the work, the following benefits love made the summary of the related content, to carries on the machining process and for everyone: the interpretation of the precision machining process and precision of machining process is the interpretation of the workpiece or parts manufacturing process steps, using the method of mechanical processing, directly change the blank shape, size and surface quality, etc. , making it a part of process called machining process.
Such as a normal part of machining process is rough machining
Packaging, is a general process of processing.
A, the following is a technical process steps: 1, calculate annual production program, determine the type of manufacture.
2, the analysis part drawing and the product assembly drawing, parts for process analysis.
3, select blank.
4, the formulation process route.
5, determine the machining allowance of each process, calculating the dimension and tolerance.
6, to determine the equipment used in each process and cutting tool, jig, measuring tools and auxiliary tools.
7, determine the cutting depth and man-hour quota.
8, determine the main process of technical requirements and test methods.
9, fill out the process documents.
In the process of formulating procedure, often have to adjust the content of the front has been preliminarily determined, in order to improve the economic benefit.
May arise in the process of execution procedure, the unprecedented material, such as the change of the production conditions, the introduction of new technologies, new processes, new materials, the application of advanced equipment, etc. , are requirements in a timely manner to revise and improve process planning.
Second, the precision of machining, precision 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, parts machining process of heat treatment: parts machining process of heat treatment, generally can be divided into preliminary heat treatment and final heat treatment of these two: 1, the 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 machining.
2, the 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.
Four, to obtain the method of mechanical machining accuracy have?
1, dimension precision: there try to cut method, the adjustment method, main dimension method and automatic control, etc. These methods.
2, the geometry precision: mainly locus method, displayed and the generating method of these methods.
3, mutual position accuracy: installed mainly include direct method, the alignment method and fixture installation method, etc. These methods.
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