2011 Fiscal Year Final Research Report
Proposal of novel chatter suppression method by utilizing anisotropic dynamics
| Project/Area Number |
22760097
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Keywords | びびり振動 / 切削 / 中ぐり加工 / 旋削加工 / 不安定振動 |
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| Research Abstract |
A novel chatter suppression method in boring operation is proposed. The anisotropic boring tool with a step portion and notches on the cylinder periphery is designed, which has anisotropic dynamic characteristics. Since the direct and the cross transfer function components of the proposed tool are designed to cancel out each vibration, the nominal compliance of the boring tool in cutting process can be reduced significantly. Hammering tests of the developed tool clarified that appropriate anisotropic frequency response function is roughly attained by the proposed design. The developed tool was subsequently applied to turning experiments, and it was clarified that the stability limit in the radial depth of cut significantly increases by using the proposed boring tool as compared to the ordinary boring tool.
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