Study to Cutting Arm of JSBZ Vibrating Tunneler with Cantilever

By analysis to JSBZ vibrating tunneler with cantilever about its operation process, the paper determines brief drawing of motion unit, stress formula for joint of each arm and working oil cylinder. Each component of working arm serving as study object, the paper founds finite element analysis model to calculate strength and stiffness, then concludes more satisfied cross-section for design.