Oil leakage prevention brake positioning device for vertical machining center workbench

The utility model relates to the technical field of mechanical sealing, in particular to a vertical machining center workbench oil leakage prevention brake positioning device which comprises a bent plate seat and a workbench which are vertically arranged and parallel, a bent plate is fixed on the bent plate seat, a brake base is fixed on the workbench, and a brake is fixed on the brake base. The brake base is connected with the bent plate in a sliding mode through hook plates on the two sides, the brake base is provided with a copper plate, a plurality of piston cavities are evenly distributed in the brake base, and the piston cavities are connected with floating pistons in a sliding mode, and the floating pistons can jack up the copper plate to enable the copper plate to abut against the bent plate. The copper plate is jacked by the floating piston, so that hydraulic oil leakage easily caused by direct contact of hydraulic oil with the copper plate in the prior art is avoided, and production shutdown and env