PREZISS MQL Tools

By minimum-quantity lubrication, we mean the cooling of machining processes with very small amounts of coolant-lubricant, this means an approximately 40% of electrical power reduction and the 80% less of coolant needed in the process, so we can say the MQL is another way to save energy that implicitly leads to cost reduction. The usage of the MQL technology requires a careful usage, all components, cutting tools, holders, machine, fixture, all the process must be optimally aligned to succeed. All the the cutting tool special features must be carefully designed and produced to drive the chips and cooling.

PREZISS MQL Tools

Minimal quantity lubrication (MQL) works with an air lubrication mixture (aerosol) containing only a very small proportion of cooling lubricant. Drops of coolant are applied directly to the cutting edge creating an optimal film of lubricant between tool and workpiece dissipating heat and rejecting the chips. The Preziss MQL tool system is available in 1 channel or 2 channels to ensure optimal lubrication.

Different MQL Systems:

External Supply systems:
the aerosol containing the oil is sprayed onto the point of machining through a jet installed in the machining space of the machine tool. No special holders or tools are needed.
Internal Supply system:
the MQL medium is conveyed through a rotary transmission, the work spindle, the tool holder and the tool itself, directly to the cutting edge of the tool. For such systems, special holders with a straight feed-through of the MQL medium for perfect flow are necessary. What is also needed are tools specially designed for MQL, with a transfer chamfer adjusted to the holder and with optimised coolant-lubricant outlets.
With the internal supply there are two possibilities, 1 Channel MQL and 2 Channels MQL.
1 Channel MQL:
the System generates the aerosol before entering into the machine spindle and it is driven through the machine spindle and tool holder to the most effective point in the cutting tool.
2 Channels MQL:
the oil and the air are both driven separately through spindle and the mix of two components is done at entrance of the tool holder, where both are mixed and conducted to the cutting point in the tool.