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Straight Flute and Twist Drills

  • Chapter
Geometry of Single-point Turning Tools and Drills

Part of the book series: Springer Series in Advanced Manufacturing ((SSAM))

Abstract

This chapter discusses classification, geometry, and design of straight flute and twist drills. It argues that the design, manufacturing, and implementation practices of drills are lagging behind the achievements in the tool materials, powerful high-speed-spindles rigid machines, and high-pressure MWF (coolant) supply. Although the wide availability CAD design tool and CNC precision grinding machines make it possible to reproduce any drill geometry, have not many new drill designs become available recently. The chapter points out that the prime objective of the drilling system is an increase in the drill penetration rate, i.e., in drilling productivity as the prime source for potential cost savings. As the major problem is in understanding particularities of drill geometry and its components, this chapter walks the reader from simple concepts starting from the basic terminology in drill design and geometry to the most complicated concepts in the field, keeping the context to the simplest possible fashion and providing practical examples. It provides an overview of important results concerning drill geometry and synthesizes the most relevant findings in the field with the practice of tool design.

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© 2010 Springer-Verlag London Limited

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(2010). Straight Flute and Twist Drills. In: Geometry of Single-point Turning Tools and Drills. Springer Series in Advanced Manufacturing. Springer, London. https://doi.org/10.1007/978-1-84996-053-3_4

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  • DOI: https://doi.org/10.1007/978-1-84996-053-3_4

  • Publisher Name: Springer, London

  • Print ISBN: 978-1-84996-052-6

  • Online ISBN: 978-1-84996-053-3

  • eBook Packages: EngineeringEngineering (R0)

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