CNC machining can change the shape and size of products, which plays a very important role.
Many friends do not understand the high-speed CNC machining process benchmark.
The broad meaning of benchmark is the meaning of “basis”. In mechanical manufacturing, the datum refers to the points, lines and surfaces used to determine the geometric relationship between geometric elements on the production object. According to the different functions and applications, the datum can be divided into two categories: design datum and process datum. Process datum can be divided into process datum, locating datum, measuring datum and assembling datum.
High speed CNC machining technology is the premise to ensure the production of high-quality parts.
On the lathe, the shape and size of the blank can be changed by the rotary motion of the workpiece and the linear or curvilinear motion of the cutter, so that it can be processed to meet the requirements of the drawing.
Ordinary machine tools are more and more difficult to meet the needs of machining precision parts,
At the same time, due to the improvement of production level, the price of CNC machine tools is falling from time to time. CNC precision parts processing mainly includes ultra precision turning, mirror grinding and grinding.
The primary premise of CNC precision parts processing is the accuracy of process datum. The datum on mechanical drawings are all represented by capital letters a, B, C, D, etc. with a specific ring datum symbol. When the datum symbols are aligned with the surface and the extension line of the surface or the dimension limit of the surface, the indication is based on the surface. When the datum symbol is aligned with the dimension line, it is indicated that it is based on the solid center line of the dimension. It is a more general statement that the accuracy of the technology mentioned above is mentioned for you.
Assembly benchmark refers to the accuracy of the position of parts in parts or products during assembly. Measurement benchmark refers to the specification for the size and position of the measured processing surface when the parts are inspected. Positioning reference, refers to the processing, the workpiece in the machine tool or fixture positioning with the reference.
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