The application discloses a
polishing machine for
pipe fittings with special cross sections, which comprises a
workbench and a mechanical arm body, one side of the
workbench is fixedly connected with the mechanical arm body through a mounting plate, a fixing mechanism matched with the
pipe fittings is arranged on the mechanical arm body, a driven belt
pulley is arranged on the
workbench through a mounting support, a through hole is formed in the middle of the mounting support and the driven belt
pulley, a rotating mechanism matched with the driven belt
pulley is arranged in the workbench,
polishing assemblies are symmetrically arranged on the side of the driven belt pulley close to the fixing mechanism, and
polishing structures are arranged on the side of the workbench away from the mechanical arm body through lifting mechanisms. The polishing
machine can guarantee that the
abrasive belt is attached to the
pipe fittings during polishing, thereby guaranteeing the polishing effect, and can greatly improve the polishing quality and efficiency through the self-rotation and revolution polishing mode, and the polishing
machine is simple to operate, has no polishing difficulty, and can be normally used by operators without professional training, and has low skill requirement for the operators.