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The temperature of the precision machining state and technical procedures

by:NJPE     2020-06-29
Precision machining is a kind of use in the process of operating processing machinery to change the dimensions or the performance of the workpiece, the process of precision machining according to the processed workpiece in the temperature of the state, to a certain extent, can be divided into cold and hot working. General processing at room temperature, and not artifacts caused by chemical or physical change, says cold working. Precision machining, generally in the above or below normal temperature state processing, this will directly cause the chemical or phase change of parts, are called hot working effectively, cold working according to the difference of processing methods can be divided into cutting precision machining and pressure. Hot working common heat treatment, forging, casting and welding. Precision precision machining mainly through its various machinery to change the shape of workpiece size or function. According to the processed workpiece temperature, divided into cold and hot working. The machining process of refers to a work address, on one or a set piece that the end of the continuous process of some skills. Constitute the primary characteristics of a process is not processing goal, equipment and the operator to change, and the content of the process is the end of the straight. Their skills process can be divided into the following two processes. Precision precision machining technology of rules is rules parts machining technology process and operation method, technical documents, one of which is under the condition of specific yield, the reasonable technology process and operation method, according to the rules written into technical documents, after reviewing to counseling produce. Mechanical processing technology discipline usually includes the following contents: the workpiece machining technology of road, the specific content of each working procedure, and inspection of the equipment and technology equipment, the workpiece used items and inspection method, cutting dosage, the time quota, etc. Precision parts processing technology is on the basis of process, change the shape of the yield target, scale, such as relative orientation and nature, make the finished product or semi-finished products, is each process, each process specific to clarify, for example, it says, roughing may involve blank production, polishing, etc. , finish machining may be divided into car, fitter, milling machine, and so on.
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