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ISF
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Research
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Machining Technology
DFG_BI_498_121_d_JG
quality, also usable on conventional machining centers, the process of ejector deep hole drilling is required. Two concentric boring bars on which the drill head is screwed characterize the design of the tool [...] other deep drilling methods, no sealing against cooling lubricant and thus no special machine is required. A part of the cooling lubricant flow is diverted directly into the inner tube through ejector nozzles [...] with an enormous expenditure of resources. In addition, due to the lack of process knowledge, the required cooling lubricant flow rate is often set higher than necessary during the application, which increases …