Cam follower tool arrangement

In a pipe bevelling tool arrangement of the type in which the pipe having the end surface to be bevelled is stationary and the bevel cutter tool means for bevelling the pipe face orbits around the pipe, the improvement comprising, in combination:

• mandrel means for detachably rigid engagement with the interior walls of the pipe;
• rigid arm means rotatably mounted on said mandrel means and extending radially outwardly therefrom for rotation on said mandrel means about the nominal center line of said pipe;
• motion producing means for rotating said rigid arm means about said nominal center line of said pipe;
• support means slidably mountable on said rigid arm means for radial movement with respect thereto toward and away from said nominal center line of said pipe;
• first resilient means intermediate said support means and said rigid arm means for yielding urging said support means in a radially inwardly direction toward said nominal center line of said pipe with a first predetermined resilient force;
• cam means mounted on said support means and moving in said radial movement with said support means, and said cam means having a bearing surface thereof engaging the exterior surface of said pipe, and said first resilient means urging said bearing surface of said cam means into engagement with said exterior surface of said pipe;
• bevel cutter tool means rigidly coupled to said support means moving in said radial movement therewith, and having a pipe cutting edge at a predetermined angle with said end surface of said pipe to thereby cut a predetermined bevel thereon.