Vibrations of Flat-End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments
During all the machining process, the milling cutter has to enter the workpiece either from the boundary or from the machined/unmachined surface, due to the change of machining sequence/cutter or the variation of cutting depth. Unlike the stable cutting process, the contact between cutter and machin...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/8419013 |
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| _version_ | 1832549902847049728 |
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| author | Ming Luo Qi Yao |
| author_facet | Ming Luo Qi Yao |
| author_sort | Ming Luo |
| collection | DOAJ |
| description | During all the machining process, the milling cutter has to enter the workpiece either from the boundary or from the machined/unmachined surface, due to the change of machining sequence/cutter or the variation of cutting depth. Unlike the stable cutting process, the contact between cutter and machined workpiece changes significantly in the entering process, resulting in vibration and leaving marks on the machined surface. Aiming at in-depth understanding the mechanism of this phenomenon, this paper presents a novel time-domain simulation model to predict the dynamic response of the cutter during the entering process. Two typical entering conditions, including entering from the workpiece boundary and from the machined surface along the cycle path, are modeled based on the dynamic cutting force calculation by considering dynamic undeformed chip thickness created by consequential teeth engagement. Then, it is synthesized with the time-varying immersion angle and exit angle of cutter teeth in the entering process to simulate the dynamic cutting forces and cutter vibrations. To validate the developed model, eight conditions in boundary entering and six conditions in cycle path entering are carried out by comparing the collected data and the predicted results. Results show that the developed model could precisely predict the dynamic cutting forces and cutter vibration, especially the forces and displacements under the varied cutter-workpiece contact. |
| format | Article |
| id | doaj-art-f6d2a23ee9f742debdf089c5bce55a35 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-f6d2a23ee9f742debdf089c5bce55a352025-02-03T06:08:27ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/84190138419013Vibrations of Flat-End Cutter Entering Workpiece Process: Modeling, Simulations, and ExperimentsMing Luo0Qi Yao1Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaKey Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, ChinaDuring all the machining process, the milling cutter has to enter the workpiece either from the boundary or from the machined/unmachined surface, due to the change of machining sequence/cutter or the variation of cutting depth. Unlike the stable cutting process, the contact between cutter and machined workpiece changes significantly in the entering process, resulting in vibration and leaving marks on the machined surface. Aiming at in-depth understanding the mechanism of this phenomenon, this paper presents a novel time-domain simulation model to predict the dynamic response of the cutter during the entering process. Two typical entering conditions, including entering from the workpiece boundary and from the machined surface along the cycle path, are modeled based on the dynamic cutting force calculation by considering dynamic undeformed chip thickness created by consequential teeth engagement. Then, it is synthesized with the time-varying immersion angle and exit angle of cutter teeth in the entering process to simulate the dynamic cutting forces and cutter vibrations. To validate the developed model, eight conditions in boundary entering and six conditions in cycle path entering are carried out by comparing the collected data and the predicted results. Results show that the developed model could precisely predict the dynamic cutting forces and cutter vibration, especially the forces and displacements under the varied cutter-workpiece contact.http://dx.doi.org/10.1155/2018/8419013 |
| spellingShingle | Ming Luo Qi Yao Vibrations of Flat-End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments Shock and Vibration |
| title | Vibrations of Flat-End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments |
| title_full | Vibrations of Flat-End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments |
| title_fullStr | Vibrations of Flat-End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments |
| title_full_unstemmed | Vibrations of Flat-End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments |
| title_short | Vibrations of Flat-End Cutter Entering Workpiece Process: Modeling, Simulations, and Experiments |
| title_sort | vibrations of flat end cutter entering workpiece process modeling simulations and experiments |
| url | http://dx.doi.org/10.1155/2018/8419013 |
| work_keys_str_mv | AT mingluo vibrationsofflatendcutterenteringworkpieceprocessmodelingsimulationsandexperiments AT qiyao vibrationsofflatendcutterenteringworkpieceprocessmodelingsimulationsandexperiments |