GUHRING - Каталог Сверла - вся линейка инструмента - 2013 EN
для размещения заказа - guhring@guhring-tools.ru
Minimal Quantity Lubrication (MQL)
Technology and advantages
Guhring is heavily engaged in the subject of minimal MQL suitable coolant delivey
quantity lubrication and occupies one of the top positions in The coolant delivery has also been subject to an in depth
this technology. In addition to the suitable MQL geometry, analysis. The result is the recently developed MQL delivery
our priority lies especially in the optimal delivery of the system consisting of a one-piece delivery pipe, with a
coolant in the vicinity of the tool holder. Therefore, we thin-walled stainless steel pipe glued-inside and a MQL
have developed a suitable MQL shank end for our cutting adjustment screw. The advantages of this solution are:
tools and a suitable MQL coolant delivery system for the
application with our tool holders. sSIMPLEINSTALLATION
sOPTIMALFLOWCONDITIONS
sTHECOMPLIANCYOFTHEDELIVERYPIPE
sCOST
EFFICIENCY
Shank end suitable for MQL MQL considerably reduces the operating temperature
Because an extremely low volume of lubricant is applied In comparison to entirely dry machining, MQL can
with minimal quantity lubrication, the delivery of these considerably reduce machining temperatures. The result is
low coolant quantities to the effective area is of utmost longer tool life and increased process reliability. Thermo-
importance. Hereby, the geometric design of the shank graphic experiments at Guhring showed that cooling
end is of main significance for a secure delivery of the with dry air reduces the temperature at the tool point by
lubricant. more than 200 degrees. The addition of a few milliliters of
In a comprehensive series of tests we have thoroughly neat oil per hour, hence MQL, resulted in an even lower
investigated different geometric designs of the shank end temperature thanks to the reduced friction.
and subsequently determined the optimal design. The
Guhring developed conical shank end optimally satisfies
the relevant MQL conditions:
Toolholders sNOLUBRICANTPOCKETS
sMINIMALDEADAREA
sSIMPLEOPERATION
sCOST
EFFICIENTPRODUCTION
Chip Air MQL
Tool Tool temperature comparsion
Work-
piece
without
431°C
Tool temperature [°C] 196°C 145°C
Effective cooling without Air MQL
Guhring has determined the heat development at the drill point when applied without cooling or with internal cooling with air or MQL respectively. With
MQL, the temperature of the tool and subsequently the transfer of heat to the workpiece is considarably reduced.
356 guhring@guhring-tools.ru
www.guhring-tools.ru
