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Influence of a Diagonal Pre-Drilled Hole on Hole Quality During the Reaming Process Using Multiblade Tools

Hauer, Thomas and Haydn, Michael and Abele, Eberhard (2013):
Influence of a Diagonal Pre-Drilled Hole on Hole Quality During the Reaming Process Using Multiblade Tools.
In: Journal of the Brazilian Society of Mechanical Sciences and Engineering, pp. 569-573, 34, Special Issue, ISSN 1678-5878, [Article]

Abstract

The requirements of production engineering for a precision hole are to ensure the required quality as well as minimal production costs. The interactions between machine, tool and the pre-drilled hole result in uncertainties during the final reaming process. For this purpose the reaming process itself and the appearance of process faults were focused in a large number of publications. Due to the fact that the reaming process is an inherent part of a process chain and thus directly linked to a pre-machining process (drilling process), the influence of a pre-drilled hole is neglected till date. For that reason the present paper deals with the influence of a diagonal pre-drilled hole on the reaming process with multi blade tools. Pretests show that the radial deviation of the pre-drilled hole seems to be an important input parameter for the reaming process within the process chain. Based on this new input parameter the question whether the reaming tool follows the path of the pre-drilled hole or not has arisen. To achieve a better understanding of this issue, cutting tests were accomplished to investigate this influence. For this purpose, holes with different radial deviations were manufactured on a five axis machining center and reamed in a second step. The bored holes were evaluated with the help of a coordinate measuring machine and compared with ideal results. Thus the present paper highlights cause and effect relationships within the process chain drilling/reaming. In addition, a further clamping system with an increased stiffness is also examined to decrease the effects of uncertainties. Furthermore, the results were compared with an open loop chip cross section simulation.

Item Type: Article
Erschienen: 2013
Creators: Hauer, Thomas and Haydn, Michael and Abele, Eberhard
Title: Influence of a Diagonal Pre-Drilled Hole on Hole Quality During the Reaming Process Using Multiblade Tools
Language: English
Abstract:

The requirements of production engineering for a precision hole are to ensure the required quality as well as minimal production costs. The interactions between machine, tool and the pre-drilled hole result in uncertainties during the final reaming process. For this purpose the reaming process itself and the appearance of process faults were focused in a large number of publications. Due to the fact that the reaming process is an inherent part of a process chain and thus directly linked to a pre-machining process (drilling process), the influence of a pre-drilled hole is neglected till date. For that reason the present paper deals with the influence of a diagonal pre-drilled hole on the reaming process with multi blade tools. Pretests show that the radial deviation of the pre-drilled hole seems to be an important input parameter for the reaming process within the process chain. Based on this new input parameter the question whether the reaming tool follows the path of the pre-drilled hole or not has arisen. To achieve a better understanding of this issue, cutting tests were accomplished to investigate this influence. For this purpose, holes with different radial deviations were manufactured on a five axis machining center and reamed in a second step. The bored holes were evaluated with the help of a coordinate measuring machine and compared with ideal results. Thus the present paper highlights cause and effect relationships within the process chain drilling/reaming. In addition, a further clamping system with an increased stiffness is also examined to decrease the effects of uncertainties. Furthermore, the results were compared with an open loop chip cross section simulation.

Journal or Publication Title: Journal of the Brazilian Society of Mechanical Sciences and Engineering
Volume: 34, Special Issue
Uncontrolled Keywords: production engineering, process chain, uncertainties, reaming
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute of Production Management, Technology and Machine Tools (PTW)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 805: Control of Uncertainty in Load-Carrying Structures in Mechanical Engineering
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 19 Aug 2013 06:34
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