Fixture of a repairing caliper

A fixture of a repairing caliper, comprising a machine body (1), wherein a grinding stone (3) is arranged in the machine body (1), the outer surface of the grinding stone (3) is provided with a protection cover (2), a movable table (4) is arranged below the machine body (1), a grinding table (5) is arranged above the movable table (4), and the upper surface of the grinding table (5) is fixedly connected with a fixing table (6), characterized in that the interior of the machine body (1) is fixedly inlaid with a first bearing (7), a rotating handle (9) is arranged below the movable table (4), the upper surface of the rotating handle (9) is fixedly connected with a first thread rod (8), the interior of the movable table (4) is fixedly connected with a first thread ring (10), the top end of the first thread rod (8) penetrates an inner ring of the first thread ring (10) and extends to the upper side of the movable table (4), and the inner ring of the first thread ring (10) is threadedly connected to the outer surface of the first thread rod (8), the top end of the first thread rod (8) is fixedly connected to an inner ring of the first bearing (7), the bottom surface of the machine body (1) is fixedly connected with two symmetrical polished rods (11), the interior of the movable table (4) is fixedly connected with two symmetrical slip rings (35), the upper surface of the movable table (4) is provided with a first chute (14), the bottom surface of the grinding table (5) is fixedly connected with a first sliding block (13) adapted to the first chute (14), and the first sliding block (13) is slidably connected to the interior of the first chute (14);

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• the middle part at the bottom surface of the fixing table (6) is provided with a through hole (19), the upper surface of the through hole (19) is fixedly inlaid with a second bearing (20), a rotating round bar (21) is arranged above the fixing table (6), the bottom surface of the rotating round bar (21) is fixedly connected with a second thread rod (22), the bottom end of the second thread rod (22) penetrates the fixing table (6) and fixedly connected to an inner ring of the second bearing (20), the outer surface of the second thread rod (22) is threadedly connected with a second thread ring (23), the left and right side surfaces of the second thread ring (23) are both fixedly connected with fixing rods (24), the bottom surfaces of the fixing rods (24) are fixedly connected with supporting rods (25), the bottom end of each of the supporting rods (25) is fixedly hinged with a pulley (26) through a pin shaft, the upper surface of the grinding table (5) is provided with two symmetrical second sliding groove (29), the interior of the fixing table (6) is provided with two symmetrical movable blocks (30), the side surfaces of the two movable blocks (30) departing away from each other are in contact with the outer surfaces of two pulleys (26) respectively, the side surfaces of the two movable blocks (30) approaching to each other are fixedly connected with cross rods (32), the ends of the two cross rods (32) approaching to each other both penetrate the fixing table (6) and extend to the interior of the through hole (19), and the end of each of the cross rods (32) departing away from the movable block (30) is fixedly connected with a stationary clamp (34).