Straddle type monorail framework integral machining seat auxiliary device and machining method

The invention relates to a straddle type monorail framework integral machining seat auxiliary device and a machining method. The auxiliary device comprises a multifunctional fixing and clamping base, a vertical auxiliary supporting base and a transverse auxiliary supporting base. The multifunctional fixing and clamping base is fixedly connected with a machining center base and effectively fixes a straddle type monorail framework, and the vertical auxiliary supporting base and the straddle type monorail framework generate a vertical supporting effect and guarantee that vibration is not generated in the machining process. When the machining angle is limited, the straddle type monorail framework and the multifunctional fixing and clamping base are turned over, and the transverse auxiliary supporting base is adopted for auxiliary supporting after turning over, so that it is ensured that vibration is not generated in the machining process, and the machining angle is ensured. The machining center working process ca