In order to reduce the errors caused by the thermal deformation of the process system, the Crate Mould must be cooled sufficiently to reduce the temperature rise during the machining process. The machine tool is processed in a heat balance state; Precision machining is carried out at constant temperature. Before processing, all of them must run idle for a period of time for preheating, and then proceed with processing after reaching the thermal equilibrium state.
Because the thermal deformation of the crate mould has an obvious effect on the machining accuracy. Due to the large volume and mass of the machine tool, it takes a long time to reach the thermal equilibrium state from the start of the temperature rise to the temperature basically unchanged. During the heating process, the machine tool continues to deform, making it difficult to control the processing size of the workpiece.
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