| The optimized design of tiller blade based on intensity comparison |
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| DOI：10.7606/j.issn.1000-7601.2017.04.44 |
| Key Words: tiller blade axis improved design reasonable intensity benchmark rotary blade axis |
| Author Name | Affiliation | | HE Wei-zhen | College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling Shaanxi 712100, China；Shaanxi Polutechnic Institute,Xianyang Shaanxi 712000, China | | LIU Li-ru | College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling Shaanxi 712100, China | | YANG You-gang | College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling Shaanxi 712100, China | | YANG Chuang-chuang | College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling Shaanxi 712100, China |
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| Abstract: |
| Rotary tiller is an approved product with long-term performance and reasonable design. Taking the rotary tiller blade of ISG9-50 as the intensity benchmark, the design of the original blade has been improved, based on the stress analysis and comparison of the benchmark and original tiller blades. The study can provide a new method for rationally using material, cutting product cost and optimizing machinery structure. The tiller blade has been improved from the original Ф19-diameter solid shaft to the 20 mm×8 mm×6 mm(external diameter×inner diameter×thickness) hollow shaft, with material consumption reducing 7% and maximum equivalent stress of 55.808 MPa lowering 8.3%, less than the 56.818 MPa of the rotary tiller. The improved blade has the maximum deformation of 0.020 2 mm, less than the original 0.020 6 mm and the benchmark 0.029 34 mm. This result indicates that the newly-designed components and the benchmark products have the same intensity reliability if they have the same stress and strain. The improved tiller blade would have more scientific stress, structure and size. |
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