The invention discloses a fixing chuck of a plastic pipeline
cutting machine. The fixing chuck structurally comprises a fixing part, a
cutting sleeve, a motor, a protective cover, a control button and a supporting frame, wherein the fixing part is movably matched with the interior of the
cutting sleeve, the cutting sleeve is matched with the interior of the protective cover in a nested mode, the left side of the protective cover is fixed to the motor through a bolt, the motor is movably matched with the interior of the cutting sleeve, the lower end of the cutting sleeve is fixed to the surface of the supporting frame through bolts, the upper surface of the supporting frame is hinged to the lower end of the protective cover, and the fixing part comprises a clamp, a
crank handle, a carrying frame, a protective plate and a
pipe groove. According to the invention, the plastic pipeline is supported through the
pipe frame, shock absorption is performed through pressure reducing seats on the two sides while the plastic pipeline is supported, so that the vibration force generated during cutting is counteracted, a supporting rod and an air pressure cavity of the supporting rod are buffered under the cooperation of a
cushion block, the
vibration amplitude is changed, vibration generated during cutting is effectively counteracted, and the problem that the cutting precision is not high due to the fact that the upper end frame
pipe base shakes is solved.