| 摘要 |
PURPOSE:To simplify the manufacturing process and reduce the cost, by chamfering the corner part etc. of an installation surface of a ceramic pad to a locker arm when a ceramic pad is formed and machining the pad-to-cam contact surface after the pad has been fixed to the arm. CONSTITUTION:The tip portion of a locker arm 1 has a ceramic pad 2 firmly attached to it. A supporting surface 3 for the locker arm is formed in a plane nearly perpendicular to the direction of rocking motion of the tip portion of the locker arm 1. In addition, a reference surface 5 is formed in order to position the ceramic pad 2 properly with respect to a rocking shaft 4. In this case, a chamfered section 7 is provided in order to keep the pad 2 free from a corner part 6, which is used to bring the ceramic pad 2 into complete contact with both the supporting surface 3 and the reference surface 5 for the accurate positioning of the ceramic pad 2 when the pad 2 is formed. And after the ceramic pad 2 is fixed to the locker arm 1, a contact surface 8 between the pad 2 and a cam, which is formed on the opposite side of the supporting surface 3 of the ceramic pad 2, is machined for finishing. |
