| 摘要 |
<p>PCT No. PCT/JP85/00269 Sec. 371 Date Jan. 23, 1986 Sec. 102(e) Date Jan. 23, 1986 PCT Filed May 15, 1985 PCT Pub. No. WO85/05298 PCT Pub. Date Dec. 5, 1985.A device for preventing a collision between a work holder (20) and a tool in numerical control equipment for a turret punch press. A region occupied by the work holder (20) in a mechanical coordinate system, is stored in a work holder region storing memory (4), and the sizes of a plurality of tool posts of a turret (24), or the sizes of tools received in the tool posts, are stored in a tool post shape storing memory (4). At the time of tool selection, a punching inhibit computing circuit (1) computes a punching inhibit region for a selected one of the tools on the basis of the stored contents of the work holder region storing memory (4) and the tool post shape storing memory (4). Immediately before the execution of a punch command, a collision preventing circuit (1) checks whether the position of the selected tool is within the punching inhibit region or not, and if so, it stops the operation of the machine.</p> |
