Abstract
AbstractThe efficient execution of demanding deep hole drilling operations represents a major challenge for manufacturing companies. The ejector method makes the advantages of deep hole drilling, such as high material removal rate and bore quality, usable for the industry on conventional machining centers. Thus, no expensive deep hole drilling machine with complex sealing system is necessary. The ejector effect is mainly responsible for a stable deep hole drilling process by supplying the working zone with cooling lubricant. In order to realize an enhanced fundamental understanding of the fluid flow in the tool with its process-typical peculiarities, a demanding experimental setup for in-process fluid pressure and volume flow measurement is developed. Based on the results a simulation model is developed with the help of the mesh-free Smoothed Particle Hydrodynamics (SPH) method. The measurements done in the experimental investigations are used as input data for the model generation and the adjustment of the SPH adaptivity.KeywordsEjector deep hole drillingFlow of the cooling liquidSmoothed Particle Hydrodynamics (SPH)
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