The Impact of Thermal Temperature Rise on Machine Tools and Countermeasures

【The Impact of Thermal Temperature Rise on Machine Tools and Countermeasures】

Thermal temperature rise is one of the primary factors affecting the machining accuracy of machine tools. In a factory environment, machine tools are influenced by various factors such as temperature changes, motor heat, mechanical friction, cutting heat, and cooling media. These factors cause uneven temperature rises in different parts of the machine, leading to changes in the positional relationships of the parts, resulting in displacement or deformation. Consequently, temperature rise causes the machine to gradually lose the accuracy adjusted at the manufacturer and also affects the bearing clearance, leading to changes in the mechanical structure and processing accuracy.

So, how can we reduce the impact of thermal deformation on the machining accuracy of the machine?

• ReduceHeatSource: Focus on the rotation speed, clearance adjustment, and reasonable pretension value of the spindle bearing. For thrust bearings and tapered roller bearings, which have poor working conditions and generate significant heat, thrust angular contact ball bearings can be used to minimize friction and heating of certain parts.
• ThermalInsulation: Keep the heat source away from the spindle by isolating the motor or gearbox and using separate transmission methods.
• HeatDissipation: Enhance lubrication and cooling by using methods such as oil cooling and air cooling to accelerate heat dissipation.

Reducing heat generation and controlling heat sources are basic

Countermeasures. In addition to improving the mechanical structure, there are now many devices that perform thermal compensation through intelligent methods such as sensors and software. This will be another topic. If you have any other questions about the impact of thermal temperature rise on machine tools and countermeasures, please contact us and TMT will provide you with more detailed explanations and introductions!