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Does the User Behavior effect the Productivity of Hammer Drilling? : Analysis of the Influences of Feed and Lateral Force

Uhl, Michael ; Robens, Jan Heinrich; Gauch, Marius; Gwosch, Thomas 1; Matthiesen, S. 1
1 Institut für Produktentwicklung (IPEK), Karlsruher Institut für Technologie (KIT)


The objective of this study was to investigate the relationship between feed and lateral force with productivity in hammer drilling. Necessary user forces and vibration caused by hammer drilling leads to user fatigue and long-term injuries. Through an increase in productivity, the stress duration and thus injuries caused can be reduced. The user, who influences productivity, applies lateral forces in addition to the feed force during hammer drilling. Their influence and interaction with the feed force on productivity has not yet been investigated. In this study, a total of 1152 boreholes were performed on an automated test bench. Along with the feed and lateral forces, the setup, consisting of hammer drill and drill bit model, was varied in order to investigate interaction effects as well as discuss transferability of the findings. The productivity was evaluated by the rate of penetration (ROP). It was observed that the ROP decreased with increasing lateral forces (p < .001, r = 0.315) and increased with increasing feed force. The detailed courses of these relationships were setup-specific. At low feed forces, the feed and lateral force interacted on the ROP. ... mehr

Volltext §
DOI: 10.5445/IR/1000148105
Veröffentlicht am 28.06.2022
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Produktentwicklung (IPEK)
Publikationstyp Forschungsbericht/Preprint
Publikationsmonat/-jahr 06.2022
Sprache Englisch
Identifikator ISSN: 2194-1629
KITopen-ID: 1000148105
Verlag Karlsruher Institut für Technologie (KIT)
Umfang 17 S.
Serie KIT Scientific Working Papers ; 191
Schlagwörter power tool, rate of penetration, user forces, human-machine systems, user-centered design
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