Generally, mold part processors use the following methods:
1. Washing: Mainly milling the plane with a milling cutter. 2. Grinding: The grinding machine is used to grind the surface of the workpiece.
3, planing processing: mainly using a planer to plan the surface of the workpiece.
4, special processing: is the direct use of electrical energy, chemical energy, etc. processing.
5, CNC machining: mainly through the digital information to control the machine tool, so that the relative movement between the machined parts and the tool to meet the requirements, from the surface to achieve the processing of parts.
The mold part processing process generally adopts the following methods:
1. Geometric accuracy The geometric accuracy of the journal (roundness, cylindricity) should generally be limited to the diameter tolerance point. When the geometrical accuracy is required to be high, the tolerances allowed are specified on the part drawing.
2. Surface roughness may have different surface roughness values ??depending on the surface working part of the part. For example, the surface roughness of the spindle of the common machine tool spindle is Ra0.160.63um, and the surface roughness of the matching journal is Ra0. 632.5um, as the machine speed increases and the precision increases, the surface roughness value requirements of the shaft parts will become smaller and smaller.
3, dimensional accuracy The journal is the main surface of the shaft parts, which affects the shaft’s rotation accuracy and working condition. The diameter accuracy of the journal is usually IT69 according to its application requirements, and the precision journal can reach IT5. 4. The positional accuracy mainly refers to the coaxiality of the mating journal of the assembled transmission member relative to the bearing journal of the assembled bearing, usually used. The matching journal is represented by the radial circular runout of the supporting journal; according to the requirements of use, the high-precision shaft is specified as 0.001005 mm, and the general precision axis is 0.010.03 mm. In addition, there are coaxiality of the inner and outer cylindrical surfaces and the perpendicularity requirements of the axially positioned end faces and the axial line.