Method of fixing a plurality of lower members each having a reference bore for installing an upper member, and fixing jigs

摘要

First and second two spacing jigs 81 are used each having a rectangular parallelepipedal body 81a formed on the bottom surface thereof with projections 82 which are arranged side by side at a spacing equal to a predetermined interval between reference bores 106. First, the projections 82 of the first jig 81 are fitted in front reference bores 106 of respective lower members 31, 32, 33, and the projections 82 of the second jig 82 in rear reference bores 106 of the lower members. A right angle holding jig 84 in the form of a rectangular frame and having inner side faces positionable respectively in contact with the front side face of the first jig 81, the rear side face of the second jig 81 and the left and right side faces of the two jigs 81 is fitted around the bodies 81a of the two jigs 81 to adjust the arrangement of bores 106 to right angles. The lower members are fixed to a support member in this state by tightening up screw members 110.