| 摘要 |
PURPOSE:To eliminate the necessity for restricting a number of hollows, which can be cut in the same fixed cycle, by performing the positioning of a machining route, from the machining finish point of one hollow to the next machining start point, to be quickly fed in an X-axis and a Z-axis direction. CONSTITUTION:If a microcomputer is given a combined fixed cycle instruction, a lathe advances its machining by successively calculating a route P1-P33 through arithmetic operation. And the lathe performs cutting first along the route P1 by calculating it next along the route P2 by calculating it. Next, the lathe advances its cutting to a point (i) along the route P3 by obtaining it, resetting the machining to be quickly fed to the final point of the route P1. Hereafter, the lathe similarly performs cutting along the route P6-P8, resetting the machining along the route (P9-P11) to be quickly fed to the final point of the route P6. And a hollow is machined along the route P12-P19. Subsequently, the lathe similarly performs cutting along the route P20-P30, completing the machining. |
