| 摘要 |
PURPOSE:To incline a thrust piece, by a method wherein a spherical part is provided on each thrust piece, a pair of protrusions for a rotary stop whose qualities of the materials and weight are different from each other is provided, and the protrusions are inserted into earing holes of a bearing rest. CONSTITUTION:A thrust piece 17 possesses a spherical part 18 on its central part of a bearing rest 8 side in a body and a pair of protrusions 19 and 20 for a rotary stop, whose quality of the materials and weight are made to differ from each other on symmetrical positons of both sides of the spherical part in a body. Althrough the protrusions 19 and 20 for the rotary stop are inserted into bearing holes 9 of the bearing rest 8 in a play fit state, the thrust piece 17 is tilted by making the spherical part 18 into a fulcrum as weight of the pair of the protrusions differ from each other. |
