The accuracy of CNC machine tools is a very important point for machine tools, and there are many factors that can affect the accuracy of machine tools. People who are engaged in the CNC industry may have some doubts in their minds. Does temperature affect the precision of precision CNC machining center machine tools?
In fact, temperature is also one of the factors affecting the accuracy of precision CNC machining center machine tools, which we can call thermal deformation.
The machine tool is affected by the temperature change of the workshop environment, the heat generated by the motor and the friction heat of the mechanical movement, the cutting heat and the cooling medium, which will lead to uneven temperature rise of each part of the machine tool, resulting in changes in the shape accuracy and machining accuracy of the machine tool. We can give a simple example, processing a 70mm×1650mm screw on a CNC milling machine with ordinary precision, the workpiece milled at 7:30-9:00 in the morning is compared with the workpiece processed at 2:00-3:30 in the afternoon, The cumulative error can vary up to 85m. Under the condition of constant temperature, the error can be reduced to 40m, and the same is true for other types of machine tools!