| 摘要 |
<p>A tapering tool for tapering the end of a pipe or tube made of fiber reinforced plastic pipe to provide a feathered edge on the pipe. The tool has a slide pivoted to the housing of the tool at one end and which supports a grinding drum that can be slid longitudinally of the slide or tilted angularly by adjusting the arcuate movement of the slide to locate the drum in different positions for tapering the pipe end. The slide at the outer end has a pawl reciprocated by a motor in synchronism with rotation of the mandrel by the motor upon which the pipe to be tapered is disposed. The pawl in turn rotates a ratchet and thereby a cam which reciprocates a connecting rod secured to the slide. Each time the mandrel makes a complete rotation the pawl strokes the ratchet connected to the cam, and the cam is moved one increment to tilt the slide carrying the grinding drum toward the pipe to be tapered. The cam travels 180 DEG and then the direction of tilt reverses. The cam can be actuated manually to initially start the tilt of the slide and return the slide to start position. An adjustment is provided at the outer end of the slide and tool housing to change the arcuate movement of the slide carrying the drum and the consequent angle of taper of the feathered edge formed on the pipe. A rod is threaded through the support for the grinding drum to effect longitudinal adjustment of the support for the drum within the slide to locate the drum in different positions depending on the diameter of the tube to be tapered and the thickness desired in the feathered edge. A second motor rotates the grinding drum.</p> |
