Quantitative dust removal method for external slide rail of robot

The invention discloses a robot external sliding rail quantitative dust removal method and belongs to the technical field of railway wagon overhaul automatic cutting operation. The problems that a traditional organ shield adopted for dust prevention of an existing three-dimensional sliding rail cannot achieve complete protection, the cleaning difficulty is greatly increased after metal particles and dust enter the three-dimensional sliding rail, and the abrasion probability of a sliding block can also be increased are solved. The method comprises the following steps: respectively arranging a dust collection box on three shafts of a three-dimensional slide rail under the working condition of to-be-dedusted operation, and carrying out dust retention test on the slide rail for N days to obtain the weight of metal particles attached to the surface of the slide rail per hour per unit area on average; determining the wind pressure required for dust removal according to the weight of the metal particles attached to