| 摘要 |
PURPOSE:To realize a quick separation and a slow approach of a feed bar against the up-and-down motion of a slide, by connecting a specifically a lever member, and an eccentric member on a crank shaft for moving up and down the slide, in a device for bringing the feed bar into contact and separate through the lever member. CONSTITUTION:Between the first eccentric member 13 for rotating together with a crank shaft 2, and a lever member 26, the first connecting member 14 whose one end has been connected to the member 13, and the second connecting member 18 which is connected freely turnable to the other end thereof and can execute freely a linear reciprocating motion are provided. Also, a moving member 24 which is freely movable in the direction of its oscillation center against the member 26 is provided on the member 18. When the shaft 2 rotates, the member 14 executes a crank motion, the member 18 executes only a linear up-and-down reciprocating motion, and together with the member 18, and member 24 moves up and down by executing a reciprocating motion in its oscillation center direction against the member 26. As a result, the member 26 is oscillated, a rack member 33 executes a linear reciprocating motion, pinions 34, 35, and the second eccentric members 36, 37 are turned, holding members 7, 8 and feed bars 9, 10 are brought into contact therewith and separate, and clamping and unclamping are executed. |
