We all know that the accuracy of CNC machine tools is very important and one of their advantages, so it is very important to grasp the accuracy. Of course, there are many factors that can affect the machining accuracy of CNC machines during CNC machining. So, what are the effects of temperature changes on the machining accuracy of CNC parts.

Tmperature is one of the factors that affects the machining accuracy of CNC, which is commonly referred to as thermal deformation.

Our common temperature changes, such as the temperature of the workshop environment, motor heating, and heat generated by mechanical friction, may cause temperature imbalance in various parts of CNC machine tools, thereby affecting the machining accuracy of CNC machine parts.

1. Basic knowledge: The impact of temperature changes on materials

As we all know, precision parts will have thermal expansion. In precision machining, the temperature problem cannot be ignored! Temperature difference is the enemy of accuracy. If we don't care about the important issue of temperature, how can we discuss accuracy? The specific amount of thermal expansion of precision parts depends on the change value of materials and temperature.

2. Detection error caused by temperature

If the workpiece and the detection instruments and gauges used for testing are made of different materials and are not under standard temperature conditions during testing, a deviation of 20 ° C from the standard temperature will always be an important factor in generating detection errors. For example, heating a 100mm long steel block gauge for 4C, such as heating it with palm temperature, will result in 4.6 μ The change in length of m.