Classification of mechanical processing, Nanjing Precision Engineering Co., ltd
Today by Nanjing Precision Engineering Co.
, Ltd's small editor will talk about the classification of mechanical processing. Our factory is a mechanical manufacturing enterprise integrating design, development, manufacturing, domestic sales and foreign trade services, the benchmark of precision machining can be divided into two types: Design Benchmark and process benchmark: Design benchmark: the benchmark used to determine the positions of other points, lines and surfaces on the part drawing is called Design benchmark.
Process benchmark: the benchmark used in the processing and assembly of parts.
Process benchmarks are divided into assembly benchmarks, measurement benchmarks and positioning benchmarks according to different uses.
A. Assembly benchmark: the benchmark used to determine the position of parts in components or products during assembly is called Assembly benchmark.
B. Measurement benchmark: the benchmark used to check the size and position of the machined surface is called measurement benchmark.
C. Positioning datum: the datum used for workpiece positioning during processing is called positioning datum.
As the surface of the positioning reference, only the unprocessed blank surface can be selected in the first process. This kind of positioning surface is called coarse reference.
In the following processes, the machined surface can be used as the positioning reference, which is called the fine reference.
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