Brief introduction of Worthy Hardware precision CNC machining services
In the strict control process, people use the precise lathe machines and inspection instruments to make the precision mechanical parts. If the accuracy meets 0.1μm, then we could call it ultra-precision machining. CNC precision machining applies to a lot of industries. In the aerospace industry, precision machining is mainly used for producing aircraft control parts, such as Hydraulic parts, Gyroscope frame, shell and etc. The structure of the parts used for aircraft is very complex, thus the demand of the accuracy is very high.
The results for precision machining:
1.The geometry of the working piece and its mutual alignment could reach to micro meter level.
2. The tolerance of the working pieces is below micro meters.
3.Micro surface roughness is less than 0.1μm,
4.The mating work pieces can be assembled very well.
5.Some working pieces could meet the requirements of other physical properties, such as torsional stiffness of the float gyroscope.
Precision machining includes CNC machining, CNC turning, CNC milling, fine grinding and grinding process.
Now let’s introduce the meaning of the above production process.
CNC machining and CNC Turning: A lot of precision alloy (aluminum alloy & magnesium alloy) working pieces in aircraft are processed in those working method. Generally the material of the cutting tools is diamond and the blade radius is less than 0.1μm. With the help of the high precision CNC machines, the tolerances can reach to 1μm, the average height difference is less than 0.2μm surface roughness.
CNC Milling process is applied for making some complex aluminum and beryllium alloy parts. More accuracy could be made by the rails and spindles of the machines. Also the mirror surface could be achieved by the diamond cutting tools.
Fine Grinding is used to make the shafts or holes which requires very tough hardness. In order to ensure the stability, the spindles of the machines are relaying on the hydrostatic or hydrodynamic bearing. In addition to the spindle and the rigidity of the machines. The limiting accuracy of the grinding is related to the grinding wheels and the tolerance of the central holes, Fine grinding can reach 1μm tolerance and 0.5μm out-of-roundness.
Grinding: the interaction between parts will remove the irregular convex working pieces. Because the diameter of the Particle, cutting force and the cutting heat could be controlled, so it is the highest precision machining method.