Details
| Original language | English |
|---|---|
| Pages (from-to) | 5-16 |
| Number of pages | 12 |
| Journal | Journal of Machine Engineering |
| Volume | 17 |
| Issue number | 1 |
| Publication status | Published - 1 Jan 2017 |
Abstract
Machining accuracy can be considerably affected by deflections of machine tool components and the workpiece. This work presents a new approach for real-time deflection compensation, based on control integrated models. A real-time material removal rate (MRR) simulation determines the depth of cut which is used for process force calculation by Kienzle-Equations. Machine tool and workpiece deflections are then derived from a mechanical model using the calculated process forces. For this purpose, control based signals are used as model inputs. The total deviation is sent to the position controller as a setpoint offset. A dynamometer was applied to validate the simulated process forces. The presented approach was validated for cylindrical turning operations on chucked steel shafts. The experiments were carried out on a high-precision slant bed lathe. The results show, that geometrical errors could be reduced by more than 70% on average.
Keywords
- Model based compensation, Real-time model, Reduction of geometrical errors
ASJC Scopus subject areas
- Computer Science(all)
- Computer Science Applications
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Journal of Machine Engineering, Vol. 17, No. 1, 01.01.2017, p. 5-16.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Model Based Compensation of Geometrical Deviations Due to Process Forces
AU - Denkena, Berend
AU - Dahlmann, Dominik
AU - Peters, René
AU - Witt, Matthias
N1 - Funding information: The results presented in this paper were obtained within the Collaborative Research Centre 1153 “Process chain to produce hybrid high performance components by Tailored Forming” in the subproject B5. The authors would like to thank the German Research Foundation (DFG) for the financial and organisational support of this project.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Machining accuracy can be considerably affected by deflections of machine tool components and the workpiece. This work presents a new approach for real-time deflection compensation, based on control integrated models. A real-time material removal rate (MRR) simulation determines the depth of cut which is used for process force calculation by Kienzle-Equations. Machine tool and workpiece deflections are then derived from a mechanical model using the calculated process forces. For this purpose, control based signals are used as model inputs. The total deviation is sent to the position controller as a setpoint offset. A dynamometer was applied to validate the simulated process forces. The presented approach was validated for cylindrical turning operations on chucked steel shafts. The experiments were carried out on a high-precision slant bed lathe. The results show, that geometrical errors could be reduced by more than 70% on average.
AB - Machining accuracy can be considerably affected by deflections of machine tool components and the workpiece. This work presents a new approach for real-time deflection compensation, based on control integrated models. A real-time material removal rate (MRR) simulation determines the depth of cut which is used for process force calculation by Kienzle-Equations. Machine tool and workpiece deflections are then derived from a mechanical model using the calculated process forces. For this purpose, control based signals are used as model inputs. The total deviation is sent to the position controller as a setpoint offset. A dynamometer was applied to validate the simulated process forces. The presented approach was validated for cylindrical turning operations on chucked steel shafts. The experiments were carried out on a high-precision slant bed lathe. The results show, that geometrical errors could be reduced by more than 70% on average.
KW - Model based compensation
KW - Real-time model
KW - Reduction of geometrical errors
UR - http://www.scopus.com/inward/record.url?scp=85015313887&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:85015313887
VL - 17
SP - 5
EP - 16
JO - Journal of Machine Engineering
JF - Journal of Machine Engineering
SN - 1895-7595
IS - 1
ER -