| 摘要 |
PURPOSE:To accurately perform desired chamfering by inserting a grinding belt through aligned grooves and carrying out machining by pressing said grinding belt to groove angle parts using a back-up plate having curved surfaces matched with the configuration to be chamfered of the groove angle parts. CONSTITUTION:Several workpieces 21 each having a groove aligned with each other are inclinedly supported between an upper plate 28 and a lower plate 29. A grinding belt 24 is inserted through the grooves and a back-up plate having the same sectional configuration with the surface to be chamfered of the groove angle parts 23, is placed at the back of the belt. When the angle of inclination of the workpieces is defined as theta, they can be chamfered at angle theta, and the width to be chamfered can be desireably varied by the configuration of the back-up plate. |
