Curved helical drill points for microhole drilling

H. C. Chyan; Kornel Ehmann

doi:10.1243/0954405021519708

Curved helical drill points for microhole drilling

H. C. Chyan, Kornel Ehmann^*

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article

5 Scopus citations

Abstract

The ubiquitous microdrills with planar point geometry used by industry suffer from a number of undesirable characteristics and limitations that influence their drilling performance with respect to hole quality and tool life. In this paper, a new family of drill points, the 'curved helical drill points', and the related grinding methods for their manufacture are introduced to alleviate the undesired characteristics and limitations of planar drills. The mathematical foundation and an analytical and graphical comparative drill point geometry analysis between curved helical drill points, linear helical drill points and planar drill points are presented.

Original language	English (US)
Pages (from-to)	61-75
Number of pages	15
Journal	Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
Volume	216
Issue number	1
DOIs	https://doi.org/10.1243/0954405021519708
State	Published - Apr 30 2002

Keywords

Drill point
Drill point grinding
Helical drill point
Microhole drilling

ASJC Scopus subject areas

Industrial and Manufacturing Engineering
Mechanical Engineering

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10.1243/0954405021519708

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Chyan, H. C., & Ehmann, K. (2002). Curved helical drill points for microhole drilling. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 216(1), 61-75. https://doi.org/10.1243/0954405021519708

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