In the lathe, the use of workpiece rotation and tool linear motion or curvilinear movement to change the shape and size of the rough, it is processed to meet the requirements of the drawings.
Ordinary machine tools are increasingly difficult to meet the needs of processing precision parts. At the same time, due to the improvement of production level, the price of CNC machine tools is declining. CNC precision parts processing are super-precision turning, mirror grinding and grinding.
The first prerequisite for the machining of CNC precision parts is the accuracy of its process references. The references on mechanical drawings are indicated by the capital letters A, B, C, D, etc., with a specific reference symbol with a loop. When the reference mark is aligned with the extension line of the surface or the size of the surface, the surface is used as a reference. When the reference symbol is aligned with a dimension line, the reference is based on the center line of the entity marked by the dimension. The technique precision mentioned earlier is a more general statement.
Assembly reference refers to the position precision to determine the position of a part in a part or product during assembly. Measurement standards, refers to the part inspection, used for the measured surface size and location of the standard. Positioning reference, referring to the workpiece positioning in the lathe or fuxture.
CNC precision parts processing technology benchmark is to ensure the premise of the production of high quality parts.