The invention discloses a shearing device for
piston rubber ring machining, and relates to the technical field of
piston rubber ring machining. The shearing device comprises a base, a clamping and fixing mechanism, a
cutting mechanism and a movable positioning mechanism, a side plate is fixed to the outer side of the upper portion of the base, a
hydraulic cylinder is installed above the middle ofthe base, and a
piston rod is arranged above the
hydraulic cylinder; and a supporting seat is fixed above the
piston rod, a driving motor is installed above the supporting seat, a rotating shaft is arranged above the driving motor, an auxiliary steel core is arranged above the rotating shaft in a sleeving mode, and a
rubber ring pipe blank is arranged on the outer side of the auxiliary steel core.The shearing device has the following beneficial effects that the auxiliary steel core and the rubber ring
pipe blank on the outer side of the auxiliary steel core are conveniently driven to rotate through the arrangement of the driving motor and the rotating shaft, so that the
cutting mechanism can rotate for a circle on the outer side of the auxiliary steel core and the rubber ring
pipe blank to deepen the
cutting effect; and through the arrangement of the
hydraulic cylinder and the
piston rod, the driving motor and the auxiliary steel core are conveniently driven to ascend and descend, andtherefore the shearing position is conveniently adjusted.