Influence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge)
It is expected that the vibration characteristics of NC machine tools are affected by the contact between tool and workpiece during the cutting operations. However, the influences of the contact have not been clarified up to now. This study investigates the influence of contact between tool and work...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2020-11-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/86/892/86_20-00185/_pdf/-char/en |
| _version_ | 1798015037382590464 |
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| author | Taisuke HOKAZONO Ryuta SATO Isamu NISHIDA Keiichi SHIRASE |
| author_facet | Taisuke HOKAZONO Ryuta SATO Isamu NISHIDA Keiichi SHIRASE |
| author_sort | Taisuke HOKAZONO |
| collection | DOAJ |
| description | It is expected that the vibration characteristics of NC machine tools are affected by the contact between tool and workpiece during the cutting operations. However, the influences of the contact have not been clarified up to now. This study investigates the influence of contact between tool and workpiece onto vibration characteristics of machine tools. In this study, frequency response of a vertical type milling machine during cutting operation is evaluated. The evaluation tests of the contacting effect are carried out with and without cutting operations. In order to clearly evaluate the influence of the contact between a tool edge and a workpiece, boring operations of 50 mm diameter are carried out. The frequency responses are measured by using feed motor torque. Impulse signal is applied to the motor torque command during the cutting operations to oscillate the machine tool, and the axial acceleration of the table is measured to obtain the frequency responses. The impulse signal can be applied by refereeing the spindle rotational angle to control the relationships between the cutting edge and workpiece surface. As the results of the evaluations, it is clarified that the proposed method can evaluate the influence of the contact adequately. The natural frequency slightly increases and the vibration amplitude decreases when the tool contacts with the workpiece, regardless of whether non cutting or cutting. It has also been confirmed that the vibration amplitude of the frequency characteristics is changed due to the contact length of the cutting edge. |
| first_indexed | 2024-04-11T15:27:56Z |
| format | Article |
| id | doaj.art-6a33ce2c530a4d44b520859de39447c7 |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-11T15:27:56Z |
| publishDate | 2020-11-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-6a33ce2c530a4d44b520859de39447c72022-12-22T04:16:12ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612020-11-018689220-0018520-0018510.1299/transjsme.20-00185transjsmeInfluence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge)Taisuke HOKAZONO0Ryuta SATO1Isamu NISHIDA2Keiichi SHIRASE3Department of Mechanical Engineering, Kobe UniversityDepartment of Mechanical Engineering, Kobe UniversityDepartment of Mechanical Engineering, Kobe UniversityDepartment of Mechanical Engineering, Kobe UniversityIt is expected that the vibration characteristics of NC machine tools are affected by the contact between tool and workpiece during the cutting operations. However, the influences of the contact have not been clarified up to now. This study investigates the influence of contact between tool and workpiece onto vibration characteristics of machine tools. In this study, frequency response of a vertical type milling machine during cutting operation is evaluated. The evaluation tests of the contacting effect are carried out with and without cutting operations. In order to clearly evaluate the influence of the contact between a tool edge and a workpiece, boring operations of 50 mm diameter are carried out. The frequency responses are measured by using feed motor torque. Impulse signal is applied to the motor torque command during the cutting operations to oscillate the machine tool, and the axial acceleration of the table is measured to obtain the frequency responses. The impulse signal can be applied by refereeing the spindle rotational angle to control the relationships between the cutting edge and workpiece surface. As the results of the evaluations, it is clarified that the proposed method can evaluate the influence of the contact adequately. The natural frequency slightly increases and the vibration amplitude decreases when the tool contacts with the workpiece, regardless of whether non cutting or cutting. It has also been confirmed that the vibration amplitude of the frequency characteristics is changed due to the contact length of the cutting edge.https://www.jstage.jst.go.jp/article/transjsme/86/892/86_20-00185/_pdf/-char/enmachine toolvibration characteristicscutting operationcontact stiffnessprocess damping |
| spellingShingle | Taisuke HOKAZONO Ryuta SATO Isamu NISHIDA Keiichi SHIRASE Influence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge) Nihon Kikai Gakkai ronbunshu machine tool vibration characteristics cutting operation contact stiffness process damping |
| title | Influence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge) |
| title_full | Influence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge) |
| title_fullStr | Influence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge) |
| title_full_unstemmed | Influence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge) |
| title_short | Influence of contact between tool and workpiece onto vibration characteristics of machine tools (Evaluation method and influence of contact length of cutting edge) |
| title_sort | influence of contact between tool and workpiece onto vibration characteristics of machine tools evaluation method and influence of contact length of cutting edge |
| topic | machine tool vibration characteristics cutting operation contact stiffness process damping |
| url | https://www.jstage.jst.go.jp/article/transjsme/86/892/86_20-00185/_pdf/-char/en |
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