Details
| Original language | English |
|---|---|
| Pages (from-to) | 155-159 |
| Number of pages | 5 |
| Journal | Procedia CIRP |
| Volume | 71 |
| Early online date | 6 Jun 2018 |
| Publication status | Published - 2018 |
| Event | 4th CIRP Conference on Surface Integrity, CIRP CSI 2018 - Tianjin, China Duration: 11 Jul 2018 → 13 Jul 2018 |
Abstract
To reduce friction in turbo machinery components, riblets are induced on compressor blades or pump impellers. Here, the grinding process enables a higher productivity in machining of riblet structures compared to knurling, laser or milling operations. Usually, profiled grinding tools are used to create such structures inspired by sharkskin. Unfortunately, conventional grinding tools have to be dressed continuously to keep the desired profile in the circumferential surface. To avoid the time-consuming dressing process and to enable a self-sharpening effect, an innovative multi-layer tool concept is developed. The tool consists of two types of thin polyimide layers. The first type contains abrasives and the second is a support layer without abrasives. These layers are piled alternately in a special manufacturing process and act like a monolithic tool in grinding process. The aim of the investigations presented in this paper is to find an optimal parameter setting to produce riblet structures productively by using the self-sharpening effect. The optimal setting allows a grinding process without any dressing process by using a large part of the grinding tool volume. At first, the manufacturing process is focused to create clearly divided support and abrasive layers of the grinding tool. Furthermore, the investigation shows the relationship between grinding parameters and the setback of the supporting layer in the middle of the tool. This setback is important for the creation of riblet structures in the surface of AISI 420 workpieces.
Keywords
- micro machining, multi-layer tool, riblet
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Procedia CIRP, Vol. 71, 2018, p. 155-159.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Grinding of riblets with "beaver tooth" multi-layer tools
AU - Hockauf, Rolf
AU - Asadi, Esmail
AU - Denkena, Berend
AU - Grove, Thilo
AU - Wurz, Marc
N1 - Funding information: The authors would like to thank the German Research Foundation (DFG) for their financial support within the project “Flexible mono - and multilayer micro grinding tools for ultra-high precision processing and micro machining of ductile materials”. The authors would like to thank the German Research Foundation (DFG) for their financial support within the project Flexible mono- and multilayer micro grinding tools for ultra-high precision processing and micro machining of ductile materials.
PY - 2018
Y1 - 2018
N2 - To reduce friction in turbo machinery components, riblets are induced on compressor blades or pump impellers. Here, the grinding process enables a higher productivity in machining of riblet structures compared to knurling, laser or milling operations. Usually, profiled grinding tools are used to create such structures inspired by sharkskin. Unfortunately, conventional grinding tools have to be dressed continuously to keep the desired profile in the circumferential surface. To avoid the time-consuming dressing process and to enable a self-sharpening effect, an innovative multi-layer tool concept is developed. The tool consists of two types of thin polyimide layers. The first type contains abrasives and the second is a support layer without abrasives. These layers are piled alternately in a special manufacturing process and act like a monolithic tool in grinding process. The aim of the investigations presented in this paper is to find an optimal parameter setting to produce riblet structures productively by using the self-sharpening effect. The optimal setting allows a grinding process without any dressing process by using a large part of the grinding tool volume. At first, the manufacturing process is focused to create clearly divided support and abrasive layers of the grinding tool. Furthermore, the investigation shows the relationship between grinding parameters and the setback of the supporting layer in the middle of the tool. This setback is important for the creation of riblet structures in the surface of AISI 420 workpieces.
AB - To reduce friction in turbo machinery components, riblets are induced on compressor blades or pump impellers. Here, the grinding process enables a higher productivity in machining of riblet structures compared to knurling, laser or milling operations. Usually, profiled grinding tools are used to create such structures inspired by sharkskin. Unfortunately, conventional grinding tools have to be dressed continuously to keep the desired profile in the circumferential surface. To avoid the time-consuming dressing process and to enable a self-sharpening effect, an innovative multi-layer tool concept is developed. The tool consists of two types of thin polyimide layers. The first type contains abrasives and the second is a support layer without abrasives. These layers are piled alternately in a special manufacturing process and act like a monolithic tool in grinding process. The aim of the investigations presented in this paper is to find an optimal parameter setting to produce riblet structures productively by using the self-sharpening effect. The optimal setting allows a grinding process without any dressing process by using a large part of the grinding tool volume. At first, the manufacturing process is focused to create clearly divided support and abrasive layers of the grinding tool. Furthermore, the investigation shows the relationship between grinding parameters and the setback of the supporting layer in the middle of the tool. This setback is important for the creation of riblet structures in the surface of AISI 420 workpieces.
KW - micro machining
KW - multi-layer tool
KW - riblet
UR - http://www.scopus.com/inward/record.url?scp=85051241970&partnerID=8YFLogxK
U2 - 10.1016/j.procir.2018.05.089
DO - 10.1016/j.procir.2018.05.089
M3 - Conference article
AN - SCOPUS:85051241970
VL - 71
SP - 155
EP - 159
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 4th CIRP Conference on Surface Integrity, CIRP CSI 2018
Y2 - 11 July 2018 through 13 July 2018
ER -