The invention provides a guardrail tube deburring
machine which comprises a
machine table. A floating
grinding device and a rotating device are arranged above the
machine table, and a supporting frame is arranged between the floating
grinding device and the rotating device. The floating
grinding device comprises a support, a knife rest, a swing rod, a pull rod, a knife rod and a
knife holder, wherein the support is arranged on the machine table, the knife rest is arranged above the support, the upper end of the swing rod is fixed on the knife rest through a first bolt, and the lower end of the swing rod is hinged to the middle of the knife rod. A pin shaft is arranged at the upper end of the knife rod, and a through hole is formed in the pin shaft. The upper end of the pull rod is hinged to the upper end of the swing rod, and the lower end of the pull rod penetrates through the through hole. An anti-falling part is arranged at the lower end of the pull rod, and a spring is arranged on the pull rod in a sleeving mode. The lower end of the knife rod is connected with the
knife holder, and a knife is arranged on the
knife holder. The guardrail tube deburring machine solves the problems that
machining is not complete and knife
biting and breakage occur due to the fact that the knife does not float, knife consumption is reduced, the knife replacement time is shortened, the
machining quality of guardrail tubes is improved, the effective operation rate of equipment is increased, and the service life is prolonged.