| 摘要 |
<p>A turret punch press machine comprising a frame (10a) consisting of a base frame portion (12a), column portions (14a) extending from the base frame portion, and an upper frame portion (16a) horizontally extending from the column portions. The upper frame portion is divided into first and second upper frame portions, a hammer (18) and a hammer driving mechanism (20) are attached to the first upper frame portion. An upper turret (22) of paired ones, each having plural die halves (26) at the circumferential rim portion thereof, is attached to the second upper frame portion, whereas another lower turret (24) is attached to the base frame portion. Even when the first upper frame portion is deformed by the repulsive force and the like of the hammer which is being operated, the second upper frame portion is left undeformed so that the upper and lower turrets cannot have an undesired positional relationship.</p> |
