Sliding shaft milling groove

The utility model discloses a sliding shaft milling groove. The technical scheme of the utility model is mainly characterized in that a collecting groove comprises a groove bottom, a sweeping strip propping against the groove bottom, a front-end groove wall and side groove walls positioned on two sides of the collecting groove, wherein a permanent magnet is arranged on the lower end surface of the groove bottom; a filtering through hole is formed in the bottom of the front-end groove wall, and a sliding groove is also formed in the front-end groove wall; the sweeping strip is clamped in the collecting groove in a sliding way through the sliding groove; the side groove walls are provided with baffle plates. The sliding shaft milling groove disclosed by the utility model can prevent scrap iron from splashing, and can quickly separate the scrap iron and from cooled waste liquid so as to facilitate recovery.