Supporting assembly for improving machining precision of switch machine

The utility model relates to the technical field of point switch tools, in particular to a supporting assembly for improving the machining precision of a point switch, which comprises a tool bottom plate, the tool bottom plate is connected with a tool upper plate through a supporting plate, a point switch body is placed on the tool upper plate, and six groups of positioning screws are arranged at four corners and the rear end of the tool upper plate. And the positioning screw corresponds to a screw hole formed in the lower end face of the switch machine body in position. According to the supporting assembly for improving the machining precision of the switch machine, the upper end face of the switch machine is firstly clamped through the pressing plate with the small contact face, the lower end face of the switch machine is fixed through the multiple positioning screws, the bottom shell supporting face and the related size are machined, after machining is completed, the pressing plate is loosened, then the si