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1322Theoretical and experimental investigations on thespinning BTA deep-hole drill sha drill tube1. IntroductionDeep-hole drilling is de ned as the ratio of a required hole depth t

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The invention relates to a deep hole drill comprising at least one cutter (S), which is formed on a drill head and which has at least one cutting edge, the at least one cutter being div

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hydraulic vibration technology was used to improve the drill pipe bracket and bearing sleeve etc. Through the rational distribution of drill pipe bracket, the working condition of the d

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Effects of support misalignments in deep-hole drill shafts on hole

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deep hole drill deviation using cutting fluid. The principle is based on hydraulic locking, w An investigation of bell mouthing in precision hole machining with self-piloting tools. Int J

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