Title:
軸受部品の寿命診断方法、軸受部品の寿命診断装置、および軸受部品の寿命診断プログラム
Document Type and Number:
Japanese Patent JP7360977
Kind Code:
B2
Abstract:
To provide a bearing component life diagnostic method and a bearing component life diagnostic device each of which materializes improved life estimation accuracy by highly accurately estimating micro stress, and a bearing component life diagnostic program.SOLUTION: At least either a step which obtains composite stress of a bearing component for test or a step which obtains composite stress of a bearing component for diagnosis includes a step which obtains micro stress by numerical calculation using measurement data of a surface shape of the bearing component. The step which obtains micro stress by numerical calculation includes: a step which obtains load-sharing rate expressing ratio by which the micro contact portion bears burden load out of burden load on the contact portion; and a step which obtains micro stress on the basis of load obtained by multiplying the burden load on the contact portion by the load-sharing rate.SELECTED DRAWING: Figure 10
Inventors:
Naoya Hasegawa
Naoya Kamura
Takumi Fujita
Naoya Kamura
Takumi Fujita
Application Number:
JP2020045272A
Publication Date:
October 13, 2023
Filing Date:
March 16, 2020
Export Citation:
Assignee:
ntn corporation
International Classes:
G01M13/04; G01N23/2055
Domestic Patent References:
| JP2018040769A | ||||
| JP2001264193A |
Foreign References:
| US20070044543 |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office