| 摘要 |
PURPOSE:To constantly maintain the lower surface of a work piece in a stable condition wherein it follows the upper surface of a flat lapping machine under a fixed load by sticking a work piece to the lower surface of a supporting plate, and loosely fitting the supporting plate and a weight of fixed heaviness into the tubular portion of a jig placed on a flat lapping machine, while putting the supporting plate on the weight. CONSTITUTION:The lower surface of a work piece 3 is constantly exerted with the load of a weight 5 and a supporting plate 4 to which the load of the work piece 3 itself is added. In this case, the weight 5 and the supporting plate 4 make contact with each other at the edged portion of a projecting portion 5a and at one point of a recessed portion 4a so the lower surface of the work piece 3 constantly and naturally follows the surface of a flat lapping machine 1. Under this condition the flat lapping machine 1 is rotated at high speed, and then the surface of the flat lapping machine 1 and the lower surface of the work piece 3 rub against each other and the work piece 3 is polished under a stable condition wherein the lower surface of the work piece 3 naturally follows the surface of the flat lapping machine 1 under a fixed load exerted by the weight 5. |
