Multifunctional clamp of composite measuring machine

The utility model discloses a multifunctional clamp of a composite measuring machine, which comprises two guide rails (2) fixedly arranged on a glass table (1) of the composite measuring machine, sliding blocks (3) are arranged on the two guide rails (2), locking screws (4) are in threaded connection with the side walls of the two sliding blocks (3), the locking screws (4) abut against the guide rails (2), a mounting plate (5) is fixedly arranged between the two sliding blocks (3), and the mounting plate (5) is fixedly connected with the glass table (1) of the composite measuring machine. Threaded holes I (6) are formed in the left end face and the right end face of the installation plate (5), a portal frame (7) penetrates through the kidney-shaped holes (8) through screws I (9) and is in threaded connection with the threaded holes I (6) to be fixed to the installation plate (5), a supporting seat (10) is arranged at the top of a cross beam of the portal frame (7), and a plurality of top face magnets (11) are