The Role of Compressed Air in Five-axis Machining Center

In the five-axis machining center, compressed air plays a vital role, which runs through many links of the machining process, and directly affects the machining accuracy, equipment life and production efficiency. The following is the specific role of compressed air in the five axis machining center:

1. lubrication and cooling system

1. oil-air mixed lubrication
   • lubrication of spindle and lead screw compressed air is used as a transmission medium to transport lubricating oil to lubrication points such as spindle bearings (such as ceramic hybrid bearings) and lead screws in the form of tiny oil droplets. This lubrication method is environmentally friendly, non-polluting, and the oil supply can be accurately controlled to ensure that the bearing is fully lubricated while reducing the operating temperature and extending the life of the spindle.
   • Cooling effect: Compressed air is used to cool the key components of the machine tool (such as spindles and tools) through the cooling system to avoid accuracy degradation or equipment damage caused by overheating.

2. cleaning and pollution prevention

1. chip purging
   • compressed air is used to purge chips, dust and other debris in the working area and inside the machine tool to keep the machining environment clean and prevent chip accumulation from affecting machining accuracy or damaging machine tool components.
2. Precision component protection
   • laser knife measuring instrument: Through the air seal system, compressed air is blown from the inside to the outside to prevent cutting fluid, graphite dust and other pollution sources from entering and ensure measurement accuracy.
   • Grating ruler: The real-time cleaning function avoids downtime caused by pollution. Official data show that 63% of grating ruler failures are caused by pollution.

3. Pneumatic Control and Automation

1. power source
   • compressed air drives the cylinder, pneumatic motor and other executive components to realize the automatic action of tool magazine door switch, worktable clamping, tool changing mechanism, etc., to ensure the fast and accurate control of the machine tool.
2. Tool change and clamping
   • spindle cone hole cleaning: Before tool change, compressed air purges the spindle taper hole to ensure tool clamping accuracy.
   • Pneumatic clamping: Use compressed air to realize the rapid clamping and release of the workpiece, and improve the processing efficiency.

4. equipment protection and life extension

1. airtight Layer Protection
   • spindle and other key components through compressed air to form an air tight layer to prevent impurities from eroding the bearing area, to protect the accuracy and life of the spindle.
2. Reduced downtime
   • real-time cleaning grating ruler and other precision parts, effectively reduce the downtime caused by pollution, improve equipment utilization.

5. processing quality improvement

1. tool attitude optimization
   • while cooling and cleaning the tool, compressed air helps to maintain the best cutting angle of the tool, reduce vibration and stress concentration, and improve surface quality and dimensional accuracy.
2. Reduce scrap rate
   • high-precision machining environment reduces machining errors, thereby reducing scrap rates and saving raw material costs.

Summary

compressed air plays multiple roles in the five-axis machining center, such as lubrication and cooling, cleaning and pollution prevention, pneumatic control, equipment protection and processing quality improvement. Its quality directly affects the performance of the machine, so it is necessary to have high-efficiency filtration and drying equipment to ensure that the compressed air meets high standards (such as ISO 8573-1) to ensure high-precision and high-efficiency operation of the five-axis machining center.