Influence of different cooling strategies on the process temperatures and chip transport quality in one-shot drilling CFRP/Al-stacks
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Date
2021
Publication Type
Conference Paper
ETH Bibliography
yes
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Abstract
This study focusses on the influence of different cooling strategies on process temperatures and chip transport quality in one-shot drilling CFRP/Al-stacks. In addition to the maximum temperatures in both individual stack components, temperature changes in the CFRP material due to hot aluminium chip interactions are analysed. The following cooling strategies are compared: compressed air through the drilling tool, cryogenic CO2 cooling at the aluminium bore exit as well as the combination of both. It is shown that process temperatures and chip transport quality significantly differ for the tested cooling strategies. Whereas CO2-cooling of the Al-plate results in overall smaller chips, the use of compressed air mainly improves chip evacuation. The combination of both cooling strategies shows high potential to prevent clogging in the chip flute as well as its negative impacts on workpiece quality
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Publication status
published
External links
Book title
9th CIRP Conference on High Performance Cutting
Journal / series
Volume
101
Pages / Article No.
310 - 313
Publisher
Elsevier
Event
9th CIRP Conference on High Performance Cutting (HPC 2020)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Fiber reinforced plastic; Aluminium; Drilling; Cooling; Cryogenic machining
Organisational unit
03641 - Wegener, Konrad (emeritus) / Wegener, Konrad (emeritus)
Notes
Conference postponed due to Corona virus (COVID-19). Conference rescheduled from 2020 to 2021