| 摘要 |
<p>A pipe shearing device comprising a carriage supported slidably by a pair of spline shafts, a drum cam disposed in parallel with carriage and engaging a pair of follower rollers of the carriage in its cam rail under a holding condition, a rotary drive means connected through a gear train to said spline shafts, a pair of rotary blades provided respectively on a pair of spline bosses which are supported by said carriage and in engagement with said spline shafts, a pair of arms provided on said carriage and adapted to open or close freely, chucks provided to counter to the pair of arms and a pipe chuck mechanism composed of lower blades provided in the chunks respectively and having an arm drive mechanism imparted, so that while the carriage is making a reciprocal movement produced by the revolution of the drum cam, the chuck mechanism grips or holds the pipe during such section of the forward movement of the carriage that the carriage speed is in synchronism with the pipe feed speed, while one of the rotary blades having a rotary drive force given by the spline shafts revolving in a reverse direction to each other incises part of the pipe surface, and the other rotary blade successively cuts the pipe at the incision part into a predetermined length.</p> |
