Machining precision is related to a number of factors, mainly including material factors, machine tool factors, tooling factors, machining process factors, environmental factors and so on.
- Material factors: the hardness, strength, toughness, coefficient of thermal expansion of the material will affect the machining precision. For example, materials with high hardness are difficult to machine and easily lead to tool wear, thus affecting machining precision.
- Machine tool factors: the rigidity, stability and accuracy of the machine tool will affect the machining accuracy. If the rigidity of the machine tool is not good enough, it is easy to produce vibration, thus affecting the machining accuracy.
- Tool factors: tool material, shape, size, edge wear, etc. will affect the machining accuracy. Serious wear of the cutting edge of the tool will lead to roughness of the surface of the machined part, thus affecting the machining accuracy.
- Machining process factors: the choice of machining process, cutting parameter settings, the use of coolant, etc. will affect the machining accuracy. Unreasonable machining process will easily lead to deformation of machined parts, poor surface quality, thus affecting the machining accuracy. So machining operater’s working experiences are very important as well.
- Environmental factors: the environment of the temperature, humidity, air pressure, etc. will affect the machining accuracy. For example, too high a temperature will lead to deformation of the machine tool, thus affecting the machining accuracy.
In addition, it also includes the geometric error of the process system, the workpiece clamping error, the error caused by the deformation of the process system by force, the error caused by the deformation of the process system by heat, the deformation of the workpiece caused by residual stress and Other errors, such as principle error, measurement error, adjustment error and so on.
Before machining, analyze carefully according to the above, and I believe that you will be able to get the required precision products.
