What is the best way to improve the accuracy when doing CNC machining?

Accuracy has always been one of the most important things for customers, so what is the best way to improve the accuracy when doing CNC machining? Let's briefly talk about the accuracy of these things.
Adjust the software of the processing technology system
Trial cutting method adjustment

According to the trial cutting - accurate measurement of specifications - adjusting the amount of CNC blades to eat and move - feed drilling - retry cutting, and so on until the required specifications are achieved. This method has low productivity and is suitable for small batch production of loose parts.

regression analysis

The required specifications are obtained according to the relative positions of the CNC lathe, the fixture, the product workpiece and the CNC blade adjusted in advance. This method has high production efficiency and is suitable for mass production.

Reduce the deviation of CNC lathes in CNC machining

1) Improve the manufacturing precision of machine tool spindle components

The rotational precision of the rolling bearing should be improved:

①Using high-precision roller bearings;

②Select high-precision multi-oil wedge gas pressure rolling bearings;

③Select high-precision negative pressure rolling bearings,

The precision of the parts related to the rolling bearing should be improved:

①Improve the machining precision of the support point hole of the shell and the motor shaft of the machine tool spindle;

②Improve the machining precision of the surface that cooperates with the rolling bearing;

③Accurately measure and adjust the tangential vibration range of the corresponding parts, so that the deviation can be compensated or offset.

2) Moderate torque on roller bearings

①Can clear the gap;

②Improve the bending stiffness of rolling bearing;

③ Homogenize the inversion deviation.

3) Make the rotation precision of the machine tool spindle not reflected on the product workpiece

Reduced chain drive system deflection

1) The number of transmission parts is small, the chain transmission is short, and the transmission system is high-precision;

2) The selection of the reduction transmission system (i<1) is the key criterion to ensure the precision of the transmission system, and the closer to the transmission system pair at the end, the smaller the reduction ratio should be;

3) The precision of the end piece should be higher than that of other transmission parts.

Reduce cnc machining CNC blade damage

Before the specification of the CNC blade is damaged to a large extent, it is necessary to sharpen the knife again.

Reduce the bearing deformation of CNC machining system software