When using Minimum Quantity Lubrication Technology (MQL) the lubricant is transported to the cutting edge in the form of an aerosol. In contrast to the conventional cutting fluid (coolant) only the smallest amount of a lubricant are used for chip extraction. The greatest part of the thermal energy is extracted with the chip by the airflow and the high feed rates.
Dynamic aerosol generation and monitoring functions within the MQL systems enable the highest process reliability.
Comparison of the processes
|Lower acquisition costs machine tool|
|Lower acquisition costs lubrication technology|
|Longer tool life|
|Higher cutting speeds|
|More homogenous temperature on the blade|
|Shorter processing times|
|Better surface quality|
|Work piece after processing||wet||dry|
|Filtering coolant||necessary||not necessary|
|Disposal cooling lubricant||necessary||not necessary|
|Cleaning chip||necessary||not necessary|
Types of processing:
- Thread cutting
- Types of thread
- Deep hole drilling
- Roller burnishing ...
Sure! The biggest challenge when using MQL applications consists of generating and delivering a perfect aerosol. Many manufacturers have not fulfilled this demand. We at LUBRIX are masters of the perfect aerosol. The most homogenous particle sizes between 0.1 and 1 µm, exactly parameterised and monitored.
Until the 90s, lubricating oil and air were delivered through the spindle in separate channels. Both media were mixed in the tool holder.
Today, LUBRIX systems generate a lubricating aerosol in modern MQL systems and deliver the conditioned MQL medium to the cutting edge in a controlled way. For the user, there are only advantages:
- More homogenous delivery of oil
- Lower oil consumption
- Simpler installation
- Faster reaction time
- No throttle effect in the tool holder
- Leakages in feed lines have a less negative influence
A nozzle sprays the aerosol on to the tool blade from outside. For tools without cooling channels only the external feed can be applied.
As far as possible, lubrication should always be fed "internally" in order to avoid shadow effects and wastage.
A further advantage of the internal feed is the fact that exit angles of nozzles do not have to be set manually.