Machining mounting seat manufacturers

A 0.01mm mechanical part is composed of several surfaces. To study the relative relationship of the surface of the part, a datum must be determined. The datum is the point, line, and surface on which the position of other points, lines, and surfaces are d


[Product name]: mounting seat
【Affiliation】: CNC machining
[Material quality]: 45#
[machining technology]: wire cutting machining, grinding machine machining, cnc machining
[Dimensions]: 50*70*40mm
[machining accuracy]: 0.01mm

Mechanical parts are composed of several surfaces. To study the relative relationship of parts surfaces, a datum must be determined. The datum is the point, line, and surface on which the position of other points, lines, and surfaces are based on the part. According to the different functions of benchmarks, benchmarks can be divided into design benchmarks and process benchmarks.
Design datum: The datum used to determine the position of other points, lines and surfaces on the part drawing is called the design datum.
Process benchmark: the benchmark used in the process of machining and assembly of parts, called process benchmark. Process benchmarks are divided into assembly benchmarks, measurement benchmarks and positioning benchmarks according to different uses.

(1) Assembly datum: The datum used to determine the position of the part in the component or product during assembly is called the assembly datum.
(2) Measurement datum: the datum used to check the size and position of the processed surface, called the measurement datum.
(3) Positioning datum: The datum used for positioning the workpiece during machining is called the positioning datum. As the surface (or line, point) of the positioning reference, in the first process, only the unprocessed surface of the blank can be selected. This positioning surface is called the rough reference. In the subsequent processes, the processed surface can be used as the positioning reference , This kind of positioning surface is called fine datum.

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