The thermal characteristics of CNC vertical machining centers have a significant impact on machining accuracy, accounting for almost half of the machining accuracy. The spindle of the machine tool, the guide rails and screws used for XYZ motion axis components

All components will heat up and deform due to load and friction during movement, but the position of the spindle and XYZ motion axis components relative to the worktable ultimately affects the machining accuracy in the thermal deformation error chain

Move.

The significant difference in machining accuracy between machine tools in long-term shutdown and thermal equilibrium states is due to the fact that the spindle and various motion axes of CNC machine tools operate for a period of time

The temperature is relatively maintained at a fixed level, and as the processing time changes, the thermal accuracy of the CNC machine tool tends to stabilize, indicating that the spindle and moving parts are pre machined

Heat is very necessary.

However, the warm-up exercise of machine tools is often overlooked or unknown by many factories.

How to preheat the machine tool?

If the machine tool is idle for more than several days, Xiehong (Jiangsu) Intelligent Equipment Co., Ltd. recommends preheating for more than 30 minutes before high-density machining; If the idle state is only a few

It is recommended to preheat for 5-10 minutes before high-density processing.

The preheating process involves the machine tool participating in the repeated movement of the machining axis for multi axis linkage, such as moving the XYZ axes from the lower left corner to the upper right corner of the coordinate system and repeatedly moving them in the correct direction

Corner line.

When executing, a macro program can be written on the machine tool to repeatedly perform the preheating action.

After sufficient preheating of the machine tool, the dynamic machine tool can be put into high-density machining production, and you will obtain stable and consistent machining accuracy.