| 摘要 |
PURPOSE:To enable a prescribed inclined angle to be kept, by providing a reference plane on a base table having a support table for supporting a workpiece on a working table, first and second reference portions on the support table at the side of the base table, and means for preventing rotation of the support table. CONSTITUTION:A base table 14 is provided with a reference plane 20 and receiving surfaces 26, 28 forming a concave portion 22 of V-shaped cross section. A support table 16 is provided with two concave grooves 30, 32 each forming two receiving surfaces 38, 40 and 42, 44. First and second shafts 50, 54 are attached to the V-shaped concave grooves 30, 32 with screws 52, 56. Rotation of the support table 16 is prevented by inserting a clamping screw 66 of preventing means 18 into a screw hole 24 of the base table 14 so as to enable the first shaft 50 to press the receiving surfaces 26, 28 of the base table 16. When the clamping screw 66 is loosened, the support table 16 is rotatable with respect to the base table 14 for changing an inclined angle, whereby the support table 16 can be fixed to its proper attitude. |
