CHIPS AND COOLANT
Changes in machine tools has spurred evolution in sys- tems to manage chips and fl uids, Petrovic said. “The days of machines cutting a specifi c part for the
entire life of the machine are decreasing,” he said. “In order for companies to maximize profi ts, the machine tools need higher up times so they can cut various materials and pro- duce multiple parts.
“Traditional media-style drum fi lters are not an effi cient solu- tion,” he said. “The new proven solution is utilizing a deep-bed gravity paper fi lter to permanently remove these small particles. The deep bed allows coolant to accumulate in the conveyor and a ‘fi lter cake’ on the paper is produced. The formation of this fi l- ter cake increases the fi ltration level, which allows the conveyor to remove a high volume of very small particles.”
Temperature Control
Eriez designs and manufactures magnetic separa- tion, metal detection and other equipment for metal- working industries, according to its website. The company has introduced its Superfi ltration technology, which Milton said “recovers particles down to 3 μm, which means a cleaner oil, in many cases cleaner than new oil.” Also, he said, “The use of variable frequency drives to match coolant demand from the pumps offers energy savings that can be measured over a period of time. We now also minimize the use of fi lter aids by developing and manufacturing machines that are more effi cient in their operation.
A Sanborn Patriot central system with high-speed disk centrifuge. The company said this type of system is its most common central system for coolant recovery.
“Cutting different materials on the same machine means that a better general-purpose separator is required to prop- erly remove the various materials from the coolant.” Mayfran has developed a general-purpose separator called ConSep Flex. It includes a chip conveyor to remove larger particles and a media drum fi lter to clean coolant. A magnetic bed was added to the separator. The company said conveyor designs are changing to deal with newer, harder materials.
“Conveyor construction now often includes the use of
harder and abrasion-resistant material in order to extend the life of the conveyor,” he said. Challenges posed by new materials are growing, he said. “Machining of carbon fi ber composite materials is increas-
ing,” Petrovic said. “The chips that are produced are unlike most other commonly machined materials like cast iron, aluminum and steel. These composite materials are nonfer- rous so magnetic conveyors cannot be used to separate” the material from coolant.
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AdvancedManufacturing.org | January 2017
“Eriez equipment removes chips from the coolant and oils but can also maintain coolant or oil tempera- tures.” Maintaining a set temperature is important, he said, because “temperature fl uctuations in the coolant or oil will have a negative effect on the tolerances of the parts being machined.”
Need for Flexibility Jorgensen’s products include conveyors, coolant fi ltration and material handling equipment. Regulations spur “our customers to reduce the amount of coolant they dispose of,” Bitterwolf said in the written statement. “The best way to extend coolant life is through proper fi ltration.” One of Jorgensen’s offerings is EcoFilter, which offers primary chip removal and secondary fi ltering of coolant. The company said its Vacuum Media Filter removes fi ne chips and grinding sludge. The company said its fi ltration systems are used in various CNC grinding, metalcutting and compos- ite machining operations. “Our product solutions are designed such that they can
readily and cost-effectively be modifi ed in the fi eld,” Bitterwolf said. “Our systems in the future have to be more fl exible, so they can grow with the demand.”
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