RT Journal Article
T1 Threading holder based on axial metal cylinder pins to reduce tap risk during reversion instant
A1 Fernández-Lucio, P.
A1 Gil Del Val, A.
A1 Plaza, S.
A1 Pereira, O.
A1 Fernández-Valdivielso, A.
A1 López de Lacalle, L. N.
AB Internal thread profiles are used widely in manufacturing processes with the aim of assembling/disassembling different components during maintenance activities from the aeronautics sector until common industrial parts. The threading process is one of the last operations carried out to obtain those components, and consequently, it is an operation of high added value. Threading is a complex operation that must carefully synchronize the rotation with the feed movements to avoid tool breakage during the instant of tapping reversion stage. In order to avoid this risk, several toolholders were developed present in the literature but deficiencies in terms of stability and productivity. Therefore, in this work, a new toolholder is proposed in which the common springs used to mitigate the lack of perfect synchronization between rotation and feed movements are replaced by elastic metal pins achieving a torsional compliance toolholder. The results show that the use of the proposed toolholder implies not only a productivity increase but also a surface integrity improvement as well as a stress reduction that the cutting tap is subjected and thus, achieving a substantial improvement in the current tapping processes. In particular, the use of the proposed toolholder implied a 75% reduction of the maximum stress achieved in the reversal instant, improving 20% tool life with an increase of 30% cutting speed. Therefore, the use of the proposed toolholder implies a substantial improvement in the current tapping processes.
SN 1110-0168
YR 2023
FD 2023-03-01
LK https://hdl.handle.net/11556/3693
UL https://hdl.handle.net/11556/3693
LA eng
NO Fernández-Lucio , P , Gil Del Val , A , Plaza , S , Pereira , O , Fernández-Valdivielso , A & López de Lacalle , L N 2023 , ' Threading holder based on axial metal cylinder pins to reduce tap risk during reversion instant ' , AEJ - Alexandria Engineering Journal , vol. 66 , pp. 845-859 . https://doi.org/10.1016/j.aej.2022.10.060
NO Publisher Copyright: © 2022 THE AUTHORS
NO Authors owe deep thanks to Basque Government university group IT 1573, High performance machining, MiCINN PDC2021-121792-I00 New cutting tools production for manufacturing high added-value turbomachinery components with the acronym: HCTAYLOR and UPV/EHU for the pre-doctoral grant PIF 19/96. Also, the authors thank Grant PID2019-109340RB-I00 funded by MCIN/AEI/ 10.13039/501100011033. Finally, the authors would like to make special mention of LAIP's involvement in the development of the tool holder under the HAZITEK program from the Department of Economic Development and Infrastructures of the Basque Government and FEDER funds, related to the project with the acronym CORTEX.
DS TECNALIA Publications
RD 31 jul 2024