Precise deburring device for plastic part machining

The utility model discloses a plastic part machining precision deburring device which comprises a machining box, the bottom of the machining box is fixedly connected with a base, the top of the machining box is fixedly connected with a processing box through a support, the interior of the processing box enables a connecting block and a rotating block to move through a lifting assembly, and an adjusting mechanism is arranged between the connecting block and the rotating block. A burr grinding assembly is arranged below the rotating block, and the adjusting mechanism comprises a connecting rod fixed to the surface of the rotating block in a penetrating mode. According to the precise deburring device for plastic part machining, the adjusting mechanism is arranged, a limiting gear and a limiting groove are driven to be engaged and clamped through pulling of a connecting rod, and movement of the limiting gear is limited by a limiting plate through elastic force of a torsion spring; and therefore, the grinding angl