To overcome the effects of centrifugal force and control MQL mist delivery in large milling cutters, Ingersoll Cutting Tools (www.ingersoll-imc.com) uses stainless steel tubes inside coolant channels that lead to the tools' periphery. Those tubes overcome imperfections in the drilled channels that could cause mist droplets to stick together. Mist pressure within each tube that leads to the Workpiece and inserts is controlled by a setscrew that adjusts the exit diameter of each tube. AN INCREASING NUMBER of shops are looking to reduce the amount of coolant used when machining. Cooling with an air/oil mist - minimum quantity lubrication (MQL) - or machining dry with no lubricant offers impressive economic and ecologic benefits; but, to be successful, the advanraes and limitations of these techniques must be matched to the appropriate application and cutting requirements.
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