Details
| Original language | English |
|---|---|
| Pages (from-to) | 882-887 |
| Number of pages | 6 |
| Journal | Procedia CIRP |
| Volume | 69 |
| Early online date | 18 Apr 2018 |
| Publication status | Published - 2018 |
| Event | 25th CIRP Conference on Life Cycle Engineering, , CIRP LCE 2018 - Copenhagen, Denmark Duration: 30 Apr 2018 → 2 May 2018 |
Abstract
Cemented carbide tools are often used for milling operations that cause high thermal and mechanical process loads, e.g. machining processes for titanium alloys. However, the disposal of those tools after one life cycle would significantly reduce their resource efficiency. Therefore, regrinding operations are crucial in order to recycle worn tools and ensure an economical as well as resource efficient manufacturing process. The main challenges during regrinding are the precise quantification of present defects and the subsequent determination of the grinding allowance. As it is, a worker performs both tasks using his individual estimations. Consequently, the estimated grinding allowance is often too low or too high. This either decreases the lifetime of the reground tools due to remaining defects or reduces the resource efficiency since more material than necessary is removed. This paper investigates the determination of the grinding allowance and the environmental impact of regrinding operations on the life cycle of the investigated tools. It is shown that about 12.5% percent of the worn tools are being unnecessarily disposed of. Furthermore, the resource efficiency of tools with small breakouts might be increased by 20% if the recommended allowance strategy is utilized. The tool wear of the grinding tools is also taken into consideration in order to further increase the resource efficiency of the whole life cycle, including milling tool and grinding wheel. The results show that small grain sizes and low grain concentrations are not suitable for efficient regrinding processes since higher wear and consequently higher geometrical inaccuracies of the reground tools occur.
Keywords
- Cemented Carbides, Milling Tools, Regrinding, Resource Efficiency
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
Sustainable Development Goals
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In: Procedia CIRP, Vol. 69, 2018, p. 882-887.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Resource Efficient Regrinding of Cemented Carbide Milling Tools
AU - Denkena, Berend
AU - Grove, Thilo
AU - Theuer, Mirko
AU - Liu, Yanwei
N1 - Acknowledgements: The authors would like to thank the Federal Ministry for Economic Affairs and Energy (BMWi) Germany for their organizational and financial support within the project "Autoregrind" (IGF No. 19121 N).
PY - 2018
Y1 - 2018
N2 - Cemented carbide tools are often used for milling operations that cause high thermal and mechanical process loads, e.g. machining processes for titanium alloys. However, the disposal of those tools after one life cycle would significantly reduce their resource efficiency. Therefore, regrinding operations are crucial in order to recycle worn tools and ensure an economical as well as resource efficient manufacturing process. The main challenges during regrinding are the precise quantification of present defects and the subsequent determination of the grinding allowance. As it is, a worker performs both tasks using his individual estimations. Consequently, the estimated grinding allowance is often too low or too high. This either decreases the lifetime of the reground tools due to remaining defects or reduces the resource efficiency since more material than necessary is removed. This paper investigates the determination of the grinding allowance and the environmental impact of regrinding operations on the life cycle of the investigated tools. It is shown that about 12.5% percent of the worn tools are being unnecessarily disposed of. Furthermore, the resource efficiency of tools with small breakouts might be increased by 20% if the recommended allowance strategy is utilized. The tool wear of the grinding tools is also taken into consideration in order to further increase the resource efficiency of the whole life cycle, including milling tool and grinding wheel. The results show that small grain sizes and low grain concentrations are not suitable for efficient regrinding processes since higher wear and consequently higher geometrical inaccuracies of the reground tools occur.
AB - Cemented carbide tools are often used for milling operations that cause high thermal and mechanical process loads, e.g. machining processes for titanium alloys. However, the disposal of those tools after one life cycle would significantly reduce their resource efficiency. Therefore, regrinding operations are crucial in order to recycle worn tools and ensure an economical as well as resource efficient manufacturing process. The main challenges during regrinding are the precise quantification of present defects and the subsequent determination of the grinding allowance. As it is, a worker performs both tasks using his individual estimations. Consequently, the estimated grinding allowance is often too low or too high. This either decreases the lifetime of the reground tools due to remaining defects or reduces the resource efficiency since more material than necessary is removed. This paper investigates the determination of the grinding allowance and the environmental impact of regrinding operations on the life cycle of the investigated tools. It is shown that about 12.5% percent of the worn tools are being unnecessarily disposed of. Furthermore, the resource efficiency of tools with small breakouts might be increased by 20% if the recommended allowance strategy is utilized. The tool wear of the grinding tools is also taken into consideration in order to further increase the resource efficiency of the whole life cycle, including milling tool and grinding wheel. The results show that small grain sizes and low grain concentrations are not suitable for efficient regrinding processes since higher wear and consequently higher geometrical inaccuracies of the reground tools occur.
KW - Cemented Carbides
KW - Milling Tools
KW - Regrinding
KW - Resource Efficiency
UR - http://www.scopus.com/inward/record.url?scp=85047060719&partnerID=8YFLogxK
U2 - 10.1016/j.procir.2017.11.028
DO - 10.1016/j.procir.2017.11.028
M3 - Conference article
AN - SCOPUS:85047060719
VL - 69
SP - 882
EP - 887
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 25th CIRP Conference on Life Cycle Engineering, , CIRP LCE 2018
Y2 - 30 April 2018 through 2 May 2018
ER -