| 摘要 |
PURPOSE:To improve the accuracy of round bar cutting by making a ratio of clearance to cut thickness of each part along the whole periphery an approximately constant value, in round bar cutting. CONSTITUTION:A fixed cutting edge 1 is fixed on the bolster (not illustrated) side of a press, while vertically positioning it by making use of a groove 7. A movable cutting edge 2 is guided to the bolster side and elevatably mounted so as to provide clearance 1 between a flat surface 10 thereof and a flat part 4 of the fixed cutting edge 1. A round bar 15 inserted into a hole 3 is fed when the movable cutting edge 2 is located on the upper limit and a hole 8 becomes concentric with the hole 3, and is stopped while striking a stopper 14. When the movable cutting edge 2 is driven and depressed, a cut material with prescribed length is obtained. |
