Structure Design of Automatic Tool Change Mechanism for Hobbing Machine in Hard Rock Tunneling
DOI:
https://doi.org/10.53469/wjimt.2023.06(04).02Keywords:
Hard rock tunneling machine, hobbing, 3D model, machine to man, automatic tool changing mechanism, simulationAbstract
The purpose of the study is to solve the problem of severe wear and tear of the hobbing tools in the current TBM engineering practice, but the existing manual tool change method is not efficient due to the harsh service environment and the problem of "risky tool change", how to achieve safe and fast tool change has become an inevitable trend in the future development of the TBM. To this end, based on the realistic challenges of small working space and large loads, and considering the stiffness of each part of the body, we first used the 2D software CAD to sketch the dimensions, then used the 3D software solidworks to complete the solid modeling of each part of the 3D model, and constructed the assembly from the constructed parts by matching the conditions, and finally, used the simulation software Finally, the simulation software ansysworkbench is used to carry out finite element analysis on the designed automatic tool changing mechanism and its key components, and according to the deformation, stress and strain diagrams, the maximum stress on the mechanism is analyzed whether it exceeds the yield limit of the selected material to ensure that the new structure of the hob automatic tool changing is reasonable and reliable, and the tool changing operation can be completed normally for a long time under complicated conditions.
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