| HE Xia,LI Meng-yuan,WANG Guo-rong,JIANG Long.Contrastive Analysis of Three Processing Methods of Roller Bit Bearing Surface Texture[J],47(3):28-35 |
| Contrastive Analysis of Three Processing Methods of Roller Bit Bearing Surface Texture |
| Received:May 19, 2017 Revised:March 20, 2018 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2018.03.005 |
| KeyWord:roller bit bearing surface texture precision carving nanosecond laser femtosecond laser |
| Author | Institution |
| HE Xia |
School of Mechanical Engineering, Southwest Petroleum University, Chengdu , China |
| LI Meng-yuan |
School of Mechanical Engineering, Southwest Petroleum University, Chengdu , China |
| WANG Guo-rong |
School of Mechanical Engineering, Southwest Petroleum University, Chengdu , China |
| JIANG Long |
School of Mechanical Engineering, Southwest Petroleum University, Chengdu , China |
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| Abstract: |
| Surface texture has been proved to be effective in improving lubrication performance, reducing frictional wear, but also promoting emergence of various texture processing methods. The work aims to find an effective method of texture processing for research of texture lubrication and antifriction on roller bit bearing, so as to further study bionic surface texture on the roller bit bearing. Processing modes of precision carving, nanosecond laser and femtosecond laser were used for texture experiment of the roller bit bearing, bottom morphology of the processed texture was observed to analyze advantages and disadvantages of three texture processing methods in terms of texture processing dimension, machining accuracy and processing object. Regular 3D texture morphology could be obtained by adopting precision carving technology, but is the technology was applicable to textures with diameter over 400 m instead of materials with high melting point. Due to the effect of molten metal accumulation, nanosecond laser exhibited poor texture processing quality. Better texture profile could be obtained by femtosecond laser technology as it exhibited high processing quality and was not limited by materials, and reasonable texture diameter should be less than 300 m. It provides a basis for processing methods of texturing sliding bearing of roller bit. Femtosecond laser technology has a good application prospect in the field of roller bit bearing in terms of texture processing dimension, processing object and machining accuracy, and precision carving technology can be used only when the texture size is large. |
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